./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-broom/sll-lst-data.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_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-broom/sll-lst-data.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya --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 31f7a9efc2cb78d8789da558d79970717791666cb2a6a53f6727ed996af2c74a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:04:03,843 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:04:03,910 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2023-11-29 00:04:03,915 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:04:03,916 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:04:03,941 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:04:03,942 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:04:03,942 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:04:03,943 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:04:03,943 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:04:03,944 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:04:03,944 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:04:03,945 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:04:03,946 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:04:03,946 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:04:03,947 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:04:03,947 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:04:03,948 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:04:03,948 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 00:04:03,949 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 00:04:03,949 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 00:04:03,950 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:04:03,950 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 00:04:03,951 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:04:03,951 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:04:03,952 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:04:03,952 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:04:03,952 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:04:03,953 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:04:03,953 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:04:03,954 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:04:03,954 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:04:03,954 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:04:03,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:04:03,955 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:04:03,955 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:04:03,955 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:04:03,955 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:04:03,956 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_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31f7a9efc2cb78d8789da558d79970717791666cb2a6a53f6727ed996af2c74a [2023-11-29 00:04:04,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:04:04,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:04:04,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:04:04,201 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:04:04,202 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:04:04,203 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/memsafety-broom/sll-lst-data.i [2023-11-29 00:04:06,989 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:04:07,223 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:04:07,224 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/sv-benchmarks/c/memsafety-broom/sll-lst-data.i [2023-11-29 00:04:07,246 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/data/44627c3a9/425806fae5454f31866d1d91546ed5ab/FLAG54256e20f [2023-11-29 00:04:07,258 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/data/44627c3a9/425806fae5454f31866d1d91546ed5ab [2023-11-29 00:04:07,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:04:07,262 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:04:07,263 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:04:07,263 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:04:07,267 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:04:07,268 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:04:07" (1/1) ... [2023-11-29 00:04:07,268 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22ff71ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:07, skipping insertion in model container [2023-11-29 00:04:07,269 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:04:07" (1/1) ... [2023-11-29 00:04:07,320 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:04:07,557 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:04:07,566 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:04:07,601 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:04:07,625 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:04:07,626 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:07 WrapperNode [2023-11-29 00:04:07,626 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:04:07,627 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:04:07,627 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:04:07,627 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:04:07,632 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:07" (1/1) ... [2023-11-29 00:04:07,645 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:07" (1/1) ... [2023-11-29 00:04:07,665 INFO L138 Inliner]: procedures = 121, calls = 18, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 65 [2023-11-29 00:04:07,666 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:04:07,666 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:04:07,667 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:04:07,667 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:04:07,675 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:07" (1/1) ... [2023-11-29 00:04:07,676 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:07" (1/1) ... [2023-11-29 00:04:07,679 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:07" (1/1) ... [2023-11-29 00:04:07,695 INFO L175 MemorySlicer]: Split 8 memory accesses to 1 slices as follows [8]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 4 writes are split as follows [4]. [2023-11-29 00:04:07,695 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:07" (1/1) ... [2023-11-29 00:04:07,695 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:07" (1/1) ... [2023-11-29 00:04:07,703 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:07" (1/1) ... [2023-11-29 00:04:07,707 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:07" (1/1) ... [2023-11-29 00:04:07,708 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:07" (1/1) ... [2023-11-29 00:04:07,710 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:07" (1/1) ... [2023-11-29 00:04:07,713 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:04:07,714 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:04:07,714 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:04:07,714 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:04:07,715 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:07" (1/1) ... [2023-11-29 00:04:07,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:04:07,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:04:07,749 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:04:07,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:04:07,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 00:04:07,786 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero [2023-11-29 00:04:07,787 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero [2023-11-29 00:04:07,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 00:04:07,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 00:04:07,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 00:04:07,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:04:07,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:04:07,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:04:07,912 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:04:07,914 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:04:08,138 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:04:08,194 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:04:08,194 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 00:04:08,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:04:08 BoogieIcfgContainer [2023-11-29 00:04:08,195 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:04:08,199 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:04:08,199 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:04:08,203 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:04:08,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:04:07" (1/3) ... [2023-11-29 00:04:08,204 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@740c7a3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:04:08, skipping insertion in model container [2023-11-29 00:04:08,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:07" (2/3) ... [2023-11-29 00:04:08,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@740c7a3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:04:08, skipping insertion in model container [2023-11-29 00:04:08,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:04:08" (3/3) ... [2023-11-29 00:04:08,206 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-lst-data.i [2023-11-29 00:04:08,230 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:04:08,230 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-11-29 00:04:08,281 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:04:08,289 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;@65d075ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:04:08,289 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-29 00:04:08,295 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 42 states have internal predecessors, (48), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:04:08,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-29 00:04:08,304 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:08,304 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-29 00:04:08,305 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:04:08,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:08,312 INFO L85 PathProgramCache]: Analyzing trace with hash 4052539, now seen corresponding path program 1 times [2023-11-29 00:04:08,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:04:08,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921306967] [2023-11-29 00:04:08,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:08,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:04:08,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:08,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:04:08,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:04:08,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921306967] [2023-11-29 00:04:08,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921306967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:04:08,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:04:08,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:04:08,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290578534] [2023-11-29 00:04:08,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:04:08,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:04:08,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:04:08,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:04:08,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:04:08,625 INFO L87 Difference]: Start difference. First operand has 46 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 42 states have internal predecessors, (48), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:04:08,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:04:08,713 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2023-11-29 00:04:08,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:04:08,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-29 00:04:08,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:04:08,723 INFO L225 Difference]: With dead ends: 45 [2023-11-29 00:04:08,723 INFO L226 Difference]: Without dead ends: 44 [2023-11-29 00:04:08,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:04:08,728 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 2 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:04:08,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 57 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:04:08,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-29 00:04:08,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-11-29 00:04:08,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 40 states have internal predecessors, (43), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:04:08,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2023-11-29 00:04:08,765 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 4 [2023-11-29 00:04:08,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:04:08,765 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2023-11-29 00:04:08,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:04:08,766 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2023-11-29 00:04:08,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-29 00:04:08,766 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:08,766 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-29 00:04:08,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:04:08,767 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:04:08,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:08,768 INFO L85 PathProgramCache]: Analyzing trace with hash 4052540, now seen corresponding path program 1 times [2023-11-29 00:04:08,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:04:08,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201055296] [2023-11-29 00:04:08,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:08,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:04:08,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:08,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:04:08,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:04:08,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201055296] [2023-11-29 00:04:08,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201055296] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:04:08,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:04:08,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:04:08,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108888788] [2023-11-29 00:04:08,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:04:08,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:04:08,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:04:08,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:04:08,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:04:08,891 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:04:08,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:04:08,941 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2023-11-29 00:04:08,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:04:08,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-29 00:04:08,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:04:08,943 INFO L225 Difference]: With dead ends: 43 [2023-11-29 00:04:08,943 INFO L226 Difference]: Without dead ends: 43 [2023-11-29 00:04:08,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:04:08,946 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 1 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:04:08,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 60 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:04:08,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-29 00:04:08,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-11-29 00:04:08,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 39 states have internal predecessors, (42), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:04:08,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2023-11-29 00:04:08,954 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 4 [2023-11-29 00:04:08,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:04:08,955 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2023-11-29 00:04:08,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:04:08,955 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2023-11-29 00:04:08,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 00:04:08,956 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:08,956 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:04:08,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:04:08,956 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:04:08,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:08,957 INFO L85 PathProgramCache]: Analyzing trace with hash 473086405, now seen corresponding path program 1 times [2023-11-29 00:04:08,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:04:08,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453354380] [2023-11-29 00:04:08,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:08,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:04:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:09,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:04:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:09,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:04:09,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:04:09,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453354380] [2023-11-29 00:04:09,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453354380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:04:09,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:04:09,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:04:09,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752798699] [2023-11-29 00:04:09,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:04:09,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:04:09,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:04:09,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:04:09,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:04:09,146 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:04:09,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:04:09,262 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2023-11-29 00:04:09,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:04:09,263 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2023-11-29 00:04:09,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:04:09,265 INFO L225 Difference]: With dead ends: 44 [2023-11-29 00:04:09,266 INFO L226 Difference]: Without dead ends: 44 [2023-11-29 00:04:09,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:04:09,268 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 11 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:04:09,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 87 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:04:09,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-29 00:04:09,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2023-11-29 00:04:09,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 36 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:04:09,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2023-11-29 00:04:09,276 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 7 [2023-11-29 00:04:09,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:04:09,277 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2023-11-29 00:04:09,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:04:09,277 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2023-11-29 00:04:09,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 00:04:09,278 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:09,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:04:09,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:04:09,278 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:04:09,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:09,279 INFO L85 PathProgramCache]: Analyzing trace with hash 473086406, now seen corresponding path program 1 times [2023-11-29 00:04:09,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:04:09,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467445044] [2023-11-29 00:04:09,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:09,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:04:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:09,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:04:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:09,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:04:09,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:04:09,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467445044] [2023-11-29 00:04:09,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467445044] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:04:09,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:04:09,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:04:09,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549073637] [2023-11-29 00:04:09,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:04:09,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:04:09,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:04:09,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:04:09,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:04:09,503 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 7 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:04:09,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:04:09,631 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2023-11-29 00:04:09,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:04:09,631 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2023-11-29 00:04:09,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:04:09,632 INFO L225 Difference]: With dead ends: 43 [2023-11-29 00:04:09,632 INFO L226 Difference]: Without dead ends: 43 [2023-11-29 00:04:09,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:04:09,634 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 5 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:04:09,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 120 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:04:09,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-29 00:04:09,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2023-11-29 00:04:09,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 35 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:04:09,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2023-11-29 00:04:09,641 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 7 [2023-11-29 00:04:09,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:04:09,641 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2023-11-29 00:04:09,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:04:09,642 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2023-11-29 00:04:09,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-29 00:04:09,642 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:09,642 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:04:09,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:04:09,643 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:04:09,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:09,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1544932467, now seen corresponding path program 1 times [2023-11-29 00:04:09,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:04:09,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722936493] [2023-11-29 00:04:09,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:09,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:04:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:09,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:04:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:09,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:04:09,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:04:09,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722936493] [2023-11-29 00:04:09,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722936493] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:04:09,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:04:09,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:04:09,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764850275] [2023-11-29 00:04:09,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:04:09,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:04:09,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:04:09,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:04:09,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:04:09,776 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:04:09,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:04:09,890 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2023-11-29 00:04:09,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:04:09,891 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-29 00:04:09,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:04:09,892 INFO L225 Difference]: With dead ends: 47 [2023-11-29 00:04:09,892 INFO L226 Difference]: Without dead ends: 47 [2023-11-29 00:04:09,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:04:09,894 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 3 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:04:09,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 105 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:04:09,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-11-29 00:04:09,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2023-11-29 00:04:09,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 40 states have internal predecessors, (46), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:04:09,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2023-11-29 00:04:09,901 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 12 [2023-11-29 00:04:09,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:04:09,901 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2023-11-29 00:04:09,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:04:09,901 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2023-11-29 00:04:09,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-29 00:04:09,902 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:09,902 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:04:09,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:04:09,902 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:04:09,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:09,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1544932468, now seen corresponding path program 1 times [2023-11-29 00:04:09,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:04:09,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250591689] [2023-11-29 00:04:09,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:09,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:04:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:10,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:04:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:10,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:04:10,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:04:10,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250591689] [2023-11-29 00:04:10,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250591689] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:04:10,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:04:10,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:04:10,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583202216] [2023-11-29 00:04:10,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:04:10,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:04:10,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:04:10,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:04:10,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:04:10,126 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:04:10,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:04:10,280 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2023-11-29 00:04:10,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:04:10,280 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-29 00:04:10,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:04:10,281 INFO L225 Difference]: With dead ends: 46 [2023-11-29 00:04:10,281 INFO L226 Difference]: Without dead ends: 46 [2023-11-29 00:04:10,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:04:10,282 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 3 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:04:10,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 132 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:04:10,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-11-29 00:04:10,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2023-11-29 00:04:10,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 40 states have internal predecessors, (45), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:04:10,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2023-11-29 00:04:10,288 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 12 [2023-11-29 00:04:10,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:04:10,288 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2023-11-29 00:04:10,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:04:10,289 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2023-11-29 00:04:10,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 00:04:10,289 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:10,290 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:04:10,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:04:10,290 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:04:10,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:10,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1328881519, now seen corresponding path program 1 times [2023-11-29 00:04:10,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:04:10,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607917964] [2023-11-29 00:04:10,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:10,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:04:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:10,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:04:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:10,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 00:04:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:10,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:04:10,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:04:10,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607917964] [2023-11-29 00:04:10,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607917964] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:04:10,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716364204] [2023-11-29 00:04:10,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:10,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:04:10,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:04:10,515 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:04:10,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:04:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:10,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 00:04:10,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:04:10,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 00:04:10,745 WARN L876 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_~pi~0.base (select |c_#valid| alloc_and_zero_~pi~0.base))))) is different from true [2023-11-29 00:04:10,784 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-29 00:04:10,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-29 00:04:10,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-29 00:04:10,792 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:04:10,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716364204] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:04:10,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:04:10,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-11-29 00:04:10,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371980517] [2023-11-29 00:04:10,858 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:04:10,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 00:04:10,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:04:10,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 00:04:10,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=87, Unknown=1, NotChecked=18, Total=132 [2023-11-29 00:04:10,860 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 11 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 00:04:11,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:04:11,087 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2023-11-29 00:04:11,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:04:11,087 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 14 [2023-11-29 00:04:11,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:04:11,088 INFO L225 Difference]: With dead ends: 47 [2023-11-29 00:04:11,088 INFO L226 Difference]: Without dead ends: 47 [2023-11-29 00:04:11,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=121, Unknown=1, NotChecked=22, Total=182 [2023-11-29 00:04:11,090 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 11 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:04:11,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 132 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 183 Invalid, 0 Unknown, 48 Unchecked, 0.2s Time] [2023-11-29 00:04:11,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-11-29 00:04:11,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2023-11-29 00:04:11,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 41 states have internal predecessors, (47), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:04:11,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2023-11-29 00:04:11,095 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 14 [2023-11-29 00:04:11,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:04:11,096 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2023-11-29 00:04:11,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 00:04:11,096 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2023-11-29 00:04:11,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 00:04:11,097 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:11,097 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:04:11,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:04:11,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:04:11,304 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:04:11,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:11,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1328881518, now seen corresponding path program 1 times [2023-11-29 00:04:11,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:04:11,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863933915] [2023-11-29 00:04:11,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:11,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:04:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:11,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:04:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:11,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 00:04:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:11,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:04:11,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:04:11,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863933915] [2023-11-29 00:04:11,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863933915] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:04:11,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645622504] [2023-11-29 00:04:11,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:11,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:04:11,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:04:11,721 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:04:11,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:04:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:11,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 00:04:11,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:04:11,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 00:04:12,007 WARN L876 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= (store |c_old(#length)| alloc_and_zero_~pi~0.base (select |c_#length| alloc_and_zero_~pi~0.base)) |c_#length|))) is different from true [2023-11-29 00:04:12,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:04:12,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 00:04:12,038 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 00:04:12,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 00:04:12,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-29 00:04:12,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:04:12,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645622504] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:04:12,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:04:12,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-11-29 00:04:12,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289169193] [2023-11-29 00:04:12,191 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:04:12,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 00:04:12,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:04:12,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 00:04:12,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=290, Unknown=1, NotChecked=34, Total=380 [2023-11-29 00:04:12,193 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 18 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 12 states have internal predecessors, (19), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 00:04:12,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:04:12,517 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2023-11-29 00:04:12,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:04:12,518 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 12 states have internal predecessors, (19), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 14 [2023-11-29 00:04:12,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:04:12,519 INFO L225 Difference]: With dead ends: 51 [2023-11-29 00:04:12,519 INFO L226 Difference]: Without dead ends: 51 [2023-11-29 00:04:12,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=353, Unknown=1, NotChecked=38, Total=462 [2023-11-29 00:04:12,520 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 30 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:04:12,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 189 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 287 Invalid, 0 Unknown, 52 Unchecked, 0.2s Time] [2023-11-29 00:04:12,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-29 00:04:12,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2023-11-29 00:04:12,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 44 states have internal predecessors, (51), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:04:12,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2023-11-29 00:04:12,525 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 14 [2023-11-29 00:04:12,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:04:12,526 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2023-11-29 00:04:12,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 12 states have internal predecessors, (19), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 00:04:12,526 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2023-11-29 00:04:12,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 00:04:12,527 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:12,527 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:04:12,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 00:04:12,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:04:12,727 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:04:12,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:12,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1378534341, now seen corresponding path program 1 times [2023-11-29 00:04:12,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:04:12,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526840076] [2023-11-29 00:04:12,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:12,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:04:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:13,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:04:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:13,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:04:13,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:04:13,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526840076] [2023-11-29 00:04:13,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526840076] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:04:13,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780686527] [2023-11-29 00:04:13,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:13,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:04:13,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:04:13,088 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:04:13,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:04:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:13,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-29 00:04:13,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:04:13,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 00:04:13,211 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 11 treesize of output 7 [2023-11-29 00:04:13,216 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 11 treesize of output 7 [2023-11-29 00:04:13,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 00:04:13,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 00:04:13,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:04:13,445 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:04:13,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:04:13,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780686527] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:04:13,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:04:13,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 21 [2023-11-29 00:04:13,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017768507] [2023-11-29 00:04:13,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:04:13,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 00:04:13,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:04:13,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 00:04:13,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2023-11-29 00:04:13,806 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 21 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 00:04:14,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:04:14,045 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2023-11-29 00:04:14,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:04:14,046 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 14 [2023-11-29 00:04:14,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:04:14,047 INFO L225 Difference]: With dead ends: 51 [2023-11-29 00:04:14,047 INFO L226 Difference]: Without dead ends: 51 [2023-11-29 00:04:14,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2023-11-29 00:04:14,048 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 11 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:04:14,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 254 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:04:14,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-29 00:04:14,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2023-11-29 00:04:14,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 32 states have (on average 1.625) internal successors, (52), 45 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:04:14,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2023-11-29 00:04:14,053 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 14 [2023-11-29 00:04:14,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:04:14,053 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2023-11-29 00:04:14,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 00:04:14,054 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2023-11-29 00:04:14,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 00:04:14,054 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:14,054 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:04:14,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 00:04:14,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:04:14,257 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:04:14,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:14,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1379945847, now seen corresponding path program 1 times [2023-11-29 00:04:14,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:04:14,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296089503] [2023-11-29 00:04:14,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:14,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:04:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:14,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:04:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:14,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:04:14,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:04:14,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296089503] [2023-11-29 00:04:14,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296089503] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:04:14,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:04:14,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:04:14,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270898709] [2023-11-29 00:04:14,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:04:14,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:04:14,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:04:14,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:04:14,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:04:14,351 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:04:14,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:04:14,446 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2023-11-29 00:04:14,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:04:14,446 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-11-29 00:04:14,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:04:14,447 INFO L225 Difference]: With dead ends: 54 [2023-11-29 00:04:14,447 INFO L226 Difference]: Without dead ends: 54 [2023-11-29 00:04:14,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:04:14,448 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 15 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:04:14,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 163 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:04:14,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-29 00:04:14,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2023-11-29 00:04:14,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 33 states have (on average 1.5757575757575757) internal successors, (52), 46 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:04:14,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2023-11-29 00:04:14,453 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 14 [2023-11-29 00:04:14,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:04:14,453 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2023-11-29 00:04:14,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:04:14,453 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2023-11-29 00:04:14,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 00:04:14,454 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:14,454 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:04:14,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 00:04:14,454 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:04:14,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:14,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1449774568, now seen corresponding path program 1 times [2023-11-29 00:04:14,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:04:14,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708516826] [2023-11-29 00:04:14,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:14,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:04:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:14,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:04:14,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:14,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 00:04:14,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:14,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:04:14,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:04:14,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708516826] [2023-11-29 00:04:14,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708516826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:04:14,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:04:14,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:04:14,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193097693] [2023-11-29 00:04:14,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:04:14,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:04:14,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:04:14,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:04:14,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:04:14,582 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 00:04:14,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:04:14,684 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2023-11-29 00:04:14,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:04:14,684 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2023-11-29 00:04:14,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:04:14,685 INFO L225 Difference]: With dead ends: 50 [2023-11-29 00:04:14,685 INFO L226 Difference]: Without dead ends: 50 [2023-11-29 00:04:14,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:04:14,686 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:04:14,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 111 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:04:14,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-29 00:04:14,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-11-29 00:04:14,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 45 states have internal predecessors, (50), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:04:14,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2023-11-29 00:04:14,691 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 16 [2023-11-29 00:04:14,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:04:14,691 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2023-11-29 00:04:14,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 00:04:14,692 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2023-11-29 00:04:14,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 00:04:14,693 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:14,693 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:04:14,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 00:04:14,693 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:04:14,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:14,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1449774567, now seen corresponding path program 1 times [2023-11-29 00:04:14,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:04:14,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327300708] [2023-11-29 00:04:14,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:14,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:04:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:14,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:04:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:14,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 00:04:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:14,940 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:04:14,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:04:14,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327300708] [2023-11-29 00:04:14,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327300708] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:04:14,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:04:14,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:04:14,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799191975] [2023-11-29 00:04:14,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:04:14,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:04:14,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:04:14,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:04:14,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:04:14,942 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 00:04:15,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:04:15,062 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2023-11-29 00:04:15,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:04:15,063 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2023-11-29 00:04:15,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:04:15,063 INFO L225 Difference]: With dead ends: 49 [2023-11-29 00:04:15,063 INFO L226 Difference]: Without dead ends: 49 [2023-11-29 00:04:15,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:04:15,064 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 5 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:04:15,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 141 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:04:15,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-29 00:04:15,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-11-29 00:04:15,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 44 states have internal predecessors, (48), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:04:15,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2023-11-29 00:04:15,069 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 16 [2023-11-29 00:04:15,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:04:15,070 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2023-11-29 00:04:15,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 00:04:15,070 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2023-11-29 00:04:15,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 00:04:15,071 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:15,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:04:15,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 00:04:15,071 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:04:15,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:15,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1922936751, now seen corresponding path program 1 times [2023-11-29 00:04:15,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:04:15,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916557197] [2023-11-29 00:04:15,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:15,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:04:15,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:15,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:04:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:15,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:04:15,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:04:15,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916557197] [2023-11-29 00:04:15,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916557197] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:04:15,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:04:15,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:04:15,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126453993] [2023-11-29 00:04:15,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:04:15,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:04:15,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:04:15,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:04:15,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:04:15,171 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:04:15,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:04:15,297 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2023-11-29 00:04:15,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:04:15,297 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-29 00:04:15,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:04:15,298 INFO L225 Difference]: With dead ends: 60 [2023-11-29 00:04:15,298 INFO L226 Difference]: Without dead ends: 60 [2023-11-29 00:04:15,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:04:15,299 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 23 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:04:15,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 85 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:04:15,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-29 00:04:15,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 51. [2023-11-29 00:04:15,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 46 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:04:15,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2023-11-29 00:04:15,304 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 16 [2023-11-29 00:04:15,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:04:15,304 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2023-11-29 00:04:15,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:04:15,304 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2023-11-29 00:04:15,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 00:04:15,305 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:15,305 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:04:15,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 00:04:15,305 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:04:15,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:15,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1922936750, now seen corresponding path program 1 times [2023-11-29 00:04:15,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:04:15,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738528566] [2023-11-29 00:04:15,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:15,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:04:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:15,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:04:15,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:15,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:04:15,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:04:15,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738528566] [2023-11-29 00:04:15,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738528566] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:04:15,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:04:15,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:04:15,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764154852] [2023-11-29 00:04:15,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:04:15,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:04:15,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:04:15,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:04:15,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:04:15,499 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:04:15,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:04:15,662 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2023-11-29 00:04:15,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:04:15,663 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-29 00:04:15,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:04:15,664 INFO L225 Difference]: With dead ends: 68 [2023-11-29 00:04:15,664 INFO L226 Difference]: Without dead ends: 68 [2023-11-29 00:04:15,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:04:15,665 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 28 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:04:15,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 100 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:04:15,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-29 00:04:15,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 52. [2023-11-29 00:04:15,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 47 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:04:15,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2023-11-29 00:04:15,669 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 16 [2023-11-29 00:04:15,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:04:15,669 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2023-11-29 00:04:15,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:04:15,670 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2023-11-29 00:04:15,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 00:04:15,670 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:15,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:04:15,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 00:04:15,671 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:04:15,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:15,672 INFO L85 PathProgramCache]: Analyzing trace with hash 518501404, now seen corresponding path program 1 times [2023-11-29 00:04:15,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:04:15,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704789443] [2023-11-29 00:04:15,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:15,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:04:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:15,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:04:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:15,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:04:15,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:04:15,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704789443] [2023-11-29 00:04:15,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704789443] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:04:15,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:04:15,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 00:04:15,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625030491] [2023-11-29 00:04:15,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:04:15,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:04:15,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:04:15,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:04:15,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:04:15,774 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:04:15,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:04:15,882 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2023-11-29 00:04:15,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:04:15,882 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-11-29 00:04:15,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:04:15,883 INFO L225 Difference]: With dead ends: 61 [2023-11-29 00:04:15,883 INFO L226 Difference]: Without dead ends: 61 [2023-11-29 00:04:15,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:04:15,884 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 39 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:04:15,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 140 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:04:15,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-29 00:04:15,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2023-11-29 00:04:15,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 38 states have (on average 1.368421052631579) internal successors, (52), 48 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:04:15,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2023-11-29 00:04:15,888 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 17 [2023-11-29 00:04:15,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:04:15,888 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2023-11-29 00:04:15,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:04:15,888 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2023-11-29 00:04:15,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 00:04:15,889 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:15,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:04:15,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 00:04:15,890 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:04:15,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:15,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1106251891, now seen corresponding path program 1 times [2023-11-29 00:04:15,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:04:15,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347207507] [2023-11-29 00:04:15,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:15,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:04:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:15,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:04:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:16,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:04:16,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:04:16,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347207507] [2023-11-29 00:04:16,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347207507] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:04:16,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:04:16,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:04:16,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028903820] [2023-11-29 00:04:16,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:04:16,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:04:16,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:04:16,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:04:16,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:04:16,019 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:04:16,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:04:16,149 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2023-11-29 00:04:16,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:04:16,149 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-11-29 00:04:16,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:04:16,150 INFO L225 Difference]: With dead ends: 59 [2023-11-29 00:04:16,150 INFO L226 Difference]: Without dead ends: 59 [2023-11-29 00:04:16,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:04:16,151 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 33 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:04:16,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 122 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:04:16,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-29 00:04:16,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2023-11-29 00:04:16,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 51 states have internal predecessors, (58), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:04:16,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2023-11-29 00:04:16,155 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 18 [2023-11-29 00:04:16,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:04:16,155 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2023-11-29 00:04:16,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:04:16,155 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2023-11-29 00:04:16,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 00:04:16,156 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:16,156 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:04:16,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 00:04:16,157 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:04:16,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:16,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1065908695, now seen corresponding path program 1 times [2023-11-29 00:04:16,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:04:16,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042120704] [2023-11-29 00:04:16,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:16,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:04:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:16,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:04:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:16,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:04:16,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:04:16,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042120704] [2023-11-29 00:04:16,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042120704] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:04:16,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879612787] [2023-11-29 00:04:16,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:16,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:04:16,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:04:16,639 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:04:16,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 00:04:16,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:16,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 61 conjunts are in the unsatisfiable core [2023-11-29 00:04:16,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:04:16,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 00:04:16,865 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 8 treesize of output 1 [2023-11-29 00:04:16,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-29 00:04:17,054 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:04:17,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 15 [2023-11-29 00:04:17,066 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:04:17,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 15 [2023-11-29 00:04:17,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:04:17,114 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:04:17,232 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-29 00:04:17,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 23 [2023-11-29 00:04:17,361 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 28 treesize of output 22 [2023-11-29 00:04:17,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-11-29 00:04:17,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:04:17,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879612787] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:04:17,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:04:17,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 32 [2023-11-29 00:04:17,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244789799] [2023-11-29 00:04:17,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:04:17,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 00:04:17,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:04:17,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 00:04:17,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=902, Unknown=0, NotChecked=0, Total=992 [2023-11-29 00:04:17,553 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 32 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 28 states have internal predecessors, (43), 1 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 00:04:18,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:04:18,389 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2023-11-29 00:04:18,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-29 00:04:18,390 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 28 states have internal predecessors, (43), 1 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 21 [2023-11-29 00:04:18,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:04:18,391 INFO L225 Difference]: With dead ends: 84 [2023-11-29 00:04:18,391 INFO L226 Difference]: Without dead ends: 84 [2023-11-29 00:04:18,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=204, Invalid=2052, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 00:04:18,393 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 85 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:04:18,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 195 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:04:18,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-11-29 00:04:18,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 69. [2023-11-29 00:04:18,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 54 states have (on average 1.4444444444444444) internal successors, (78), 64 states have internal predecessors, (78), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:04:18,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 84 transitions. [2023-11-29 00:04:18,397 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 84 transitions. Word has length 21 [2023-11-29 00:04:18,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:04:18,398 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 84 transitions. [2023-11-29 00:04:18,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 28 states have internal predecessors, (43), 1 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 00:04:18,398 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 84 transitions. [2023-11-29 00:04:18,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-29 00:04:18,399 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:18,399 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:04:18,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 00:04:18,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:04:18,605 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:04:18,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:18,605 INFO L85 PathProgramCache]: Analyzing trace with hash 706112589, now seen corresponding path program 1 times [2023-11-29 00:04:18,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:04:18,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89524488] [2023-11-29 00:04:18,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:18,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:04:18,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:18,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:04:18,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:18,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 00:04:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:18,712 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:04:18,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:04:18,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89524488] [2023-11-29 00:04:18,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89524488] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:04:18,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857250919] [2023-11-29 00:04:18,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:18,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:04:18,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:04:18,714 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:04:18,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 00:04:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:18,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 00:04:18,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:04:18,856 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:04:18,856 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:04:18,876 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-29 00:04:18,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2023-11-29 00:04:18,894 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:04:18,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857250919] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:04:18,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:04:18,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 6 [2023-11-29 00:04:18,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236336852] [2023-11-29 00:04:18,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:04:18,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:04:18,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:04:18,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:04:18,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:04:18,896 INFO L87 Difference]: Start difference. First operand 69 states and 84 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:04:18,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:04:18,970 INFO L93 Difference]: Finished difference Result 71 states and 85 transitions. [2023-11-29 00:04:18,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:04:18,971 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2023-11-29 00:04:18,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:04:18,972 INFO L225 Difference]: With dead ends: 71 [2023-11-29 00:04:18,972 INFO L226 Difference]: Without dead ends: 71 [2023-11-29 00:04:18,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:04:18,973 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:04:18,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 97 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:04:18,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-11-29 00:04:18,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2023-11-29 00:04:18,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 54 states have (on average 1.4259259259259258) internal successors, (77), 64 states have internal predecessors, (77), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:04:18,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 83 transitions. [2023-11-29 00:04:18,977 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 83 transitions. Word has length 22 [2023-11-29 00:04:18,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:04:18,977 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 83 transitions. [2023-11-29 00:04:18,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:04:18,978 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 83 transitions. [2023-11-29 00:04:18,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-29 00:04:18,978 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:18,978 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:04:18,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 00:04:19,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 00:04:19,181 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:04:19,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:19,181 INFO L85 PathProgramCache]: Analyzing trace with hash 706112590, now seen corresponding path program 1 times [2023-11-29 00:04:19,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:04:19,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551881383] [2023-11-29 00:04:19,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:19,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:04:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:19,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:04:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:19,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 00:04:19,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:19,411 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:04:19,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:04:19,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551881383] [2023-11-29 00:04:19,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551881383] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:04:19,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393988026] [2023-11-29 00:04:19,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:19,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:04:19,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:04:19,413 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:04:19,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 00:04:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:19,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-29 00:04:19,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:04:19,612 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:04:19,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:04:19,695 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:04:19,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 25 [2023-11-29 00:04:19,833 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:04:19,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393988026] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:04:19,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:04:19,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2023-11-29 00:04:19,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960517909] [2023-11-29 00:04:19,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:04:19,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 00:04:19,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:04:19,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 00:04:19,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2023-11-29 00:04:19,835 INFO L87 Difference]: Start difference. First operand 69 states and 83 transitions. Second operand has 19 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-29 00:04:19,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:04:19,977 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2023-11-29 00:04:19,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:04:19,978 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 22 [2023-11-29 00:04:19,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:04:19,979 INFO L225 Difference]: With dead ends: 70 [2023-11-29 00:04:19,979 INFO L226 Difference]: Without dead ends: 70 [2023-11-29 00:04:19,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2023-11-29 00:04:19,980 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:04:19,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 269 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:04:19,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-11-29 00:04:19,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2023-11-29 00:04:19,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 54 states have (on average 1.4074074074074074) internal successors, (76), 64 states have internal predecessors, (76), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:04:19,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 82 transitions. [2023-11-29 00:04:19,986 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 82 transitions. Word has length 22 [2023-11-29 00:04:19,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:04:19,986 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 82 transitions. [2023-11-29 00:04:19,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-29 00:04:19,986 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 82 transitions. [2023-11-29 00:04:19,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-29 00:04:19,987 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:19,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:04:19,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 00:04:20,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:04:20,189 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:04:20,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:20,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1316567364, now seen corresponding path program 1 times [2023-11-29 00:04:20,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:04:20,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49479495] [2023-11-29 00:04:20,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:20,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:04:20,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:20,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:04:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:20,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:04:20,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:04:20,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49479495] [2023-11-29 00:04:20,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49479495] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:04:20,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328078688] [2023-11-29 00:04:20,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:20,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:04:20,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:04:20,367 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:04:20,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 00:04:20,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:20,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 00:04:20,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:04:20,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 00:04:20,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:04:20,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:04:20,617 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_create_#t~ret4#1.base_31| Int)) (or (= (store |c_#valid| |v_ULTIMATE.start_create_#t~ret4#1.base_31| 0) |c_ULTIMATE.start_main_old_#valid#1|) (not (= (select |c_#valid| |v_ULTIMATE.start_create_#t~ret4#1.base_31|) 0)))) is different from false [2023-11-29 00:04:20,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328078688] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:04:20,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:04:20,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 10 [2023-11-29 00:04:20,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830568308] [2023-11-29 00:04:20,618 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:04:20,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:04:20,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:04:20,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:04:20,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=110, Unknown=1, NotChecked=20, Total=156 [2023-11-29 00:04:20,619 INFO L87 Difference]: Start difference. First operand 69 states and 82 transitions. Second operand has 12 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:04:20,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:04:20,812 INFO L93 Difference]: Finished difference Result 74 states and 86 transitions. [2023-11-29 00:04:20,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:04:20,813 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2023-11-29 00:04:20,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:04:20,813 INFO L225 Difference]: With dead ends: 74 [2023-11-29 00:04:20,813 INFO L226 Difference]: Without dead ends: 61 [2023-11-29 00:04:20,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=175, Unknown=1, NotChecked=26, Total=240 [2023-11-29 00:04:20,814 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 9 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:04:20,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 139 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:04:20,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-29 00:04:20,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2023-11-29 00:04:20,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 46 states have (on average 1.4565217391304348) internal successors, (67), 56 states have internal predecessors, (67), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:04:20,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2023-11-29 00:04:20,818 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 22 [2023-11-29 00:04:20,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:04:20,819 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2023-11-29 00:04:20,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:04:20,819 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2023-11-29 00:04:20,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 00:04:20,820 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:20,820 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:04:20,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 00:04:21,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2023-11-29 00:04:21,021 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:04:21,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:21,021 INFO L85 PathProgramCache]: Analyzing trace with hash 19067371, now seen corresponding path program 1 times [2023-11-29 00:04:21,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:04:21,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958548587] [2023-11-29 00:04:21,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:21,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:04:21,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:21,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:04:21,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:21,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 00:04:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:21,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 00:04:21,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:21,381 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 00:04:21,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:04:21,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958548587] [2023-11-29 00:04:21,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958548587] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:04:21,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544768242] [2023-11-29 00:04:21,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:21,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:04:21,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:04:21,383 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:04:21,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 00:04:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:21,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-29 00:04:21,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:04:21,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 00:04:21,610 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-29 00:04:21,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-29 00:04:21,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 00:04:21,702 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 00:04:21,702 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2023-11-29 00:04:21,712 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 31 treesize of output 13 [2023-11-29 00:04:21,768 WARN L876 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_~pi~0.base (select |c_#valid| alloc_and_zero_~pi~0.base))))) is different from true [2023-11-29 00:04:21,800 INFO L349 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2023-11-29 00:04:21,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 28 [2023-11-29 00:04:21,807 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2023-11-29 00:04:21,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:04:21,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544768242] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:04:21,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:04:21,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2023-11-29 00:04:21,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93311888] [2023-11-29 00:04:21,850 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:04:21,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 00:04:21,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:04:21,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 00:04:21,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=430, Unknown=1, NotChecked=42, Total=552 [2023-11-29 00:04:21,852 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand has 23 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 00:04:22,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:04:22,034 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2023-11-29 00:04:22,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:04:22,035 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 24 [2023-11-29 00:04:22,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:04:22,036 INFO L225 Difference]: With dead ends: 60 [2023-11-29 00:04:22,036 INFO L226 Difference]: Without dead ends: 60 [2023-11-29 00:04:22,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=466, Unknown=1, NotChecked=44, Total=600 [2023-11-29 00:04:22,037 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 13 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:04:22,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 182 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 225 Invalid, 0 Unknown, 40 Unchecked, 0.1s Time] [2023-11-29 00:04:22,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-29 00:04:22,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-11-29 00:04:22,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 46 states have (on average 1.434782608695652) internal successors, (66), 55 states have internal predecessors, (66), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:04:22,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2023-11-29 00:04:22,041 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 24 [2023-11-29 00:04:22,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:04:22,042 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2023-11-29 00:04:22,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 00:04:22,042 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2023-11-29 00:04:22,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 00:04:22,043 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:22,043 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:04:22,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 00:04:22,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:04:22,249 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:04:22,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:22,249 INFO L85 PathProgramCache]: Analyzing trace with hash 19067372, now seen corresponding path program 1 times [2023-11-29 00:04:22,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:04:22,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001768459] [2023-11-29 00:04:22,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:22,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:04:22,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:22,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:04:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:22,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 00:04:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:22,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 00:04:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:22,760 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:04:22,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:04:22,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001768459] [2023-11-29 00:04:22,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001768459] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:04:22,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688838451] [2023-11-29 00:04:22,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:22,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:04:22,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:04:22,762 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:04:22,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 00:04:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:22,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-29 00:04:22,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:04:22,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 00:04:23,038 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-29 00:04:23,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-29 00:04:23,094 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 19 treesize of output 1 [2023-11-29 00:04:23,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 00:04:23,232 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 00:04:23,233 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 74 [2023-11-29 00:04:23,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 30 [2023-11-29 00:04:23,302 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 50 treesize of output 26 [2023-11-29 00:04:23,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 14 [2023-11-29 00:04:23,403 WARN L876 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= (store |c_old(#length)| alloc_and_zero_~pi~0.base (select |c_#length| alloc_and_zero_~pi~0.base)) |c_#length|))) is different from true [2023-11-29 00:04:23,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:04:23,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 00:04:23,429 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-11-29 00:04:23,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-11-29 00:04:23,453 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2023-11-29 00:04:23,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:04:23,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688838451] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:04:23,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:04:23,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 27 [2023-11-29 00:04:23,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262967243] [2023-11-29 00:04:23,548 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:04:23,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 00:04:23,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:04:23,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 00:04:23,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=729, Unknown=1, NotChecked=54, Total=870 [2023-11-29 00:04:23,550 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 28 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 20 states have internal predecessors, (31), 4 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-29 00:04:24,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:04:24,066 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2023-11-29 00:04:24,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 00:04:24,069 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 20 states have internal predecessors, (31), 4 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 24 [2023-11-29 00:04:24,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:04:24,069 INFO L225 Difference]: With dead ends: 57 [2023-11-29 00:04:24,070 INFO L226 Difference]: Without dead ends: 57 [2023-11-29 00:04:24,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=182, Invalid=1227, Unknown=1, NotChecked=72, Total=1482 [2023-11-29 00:04:24,071 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 15 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:04:24,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 256 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 359 Invalid, 0 Unknown, 41 Unchecked, 0.2s Time] [2023-11-29 00:04:24,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-29 00:04:24,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-11-29 00:04:24,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 52 states have internal predecessors, (63), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:04:24,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2023-11-29 00:04:24,074 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 24 [2023-11-29 00:04:24,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:04:24,074 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2023-11-29 00:04:24,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 20 states have internal predecessors, (31), 4 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-29 00:04:24,075 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2023-11-29 00:04:24,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 00:04:24,075 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:24,076 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:04:24,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 00:04:24,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 00:04:24,281 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:04:24,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:24,281 INFO L85 PathProgramCache]: Analyzing trace with hash -30585451, now seen corresponding path program 1 times [2023-11-29 00:04:24,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:04:24,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623166684] [2023-11-29 00:04:24,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:24,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:04:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:24,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:04:24,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:24,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 00:04:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:24,851 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:04:24,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:04:24,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623166684] [2023-11-29 00:04:24,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623166684] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:04:24,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611956385] [2023-11-29 00:04:24,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:24,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:04:24,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:04:24,853 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:04:24,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 00:04:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:24,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-29 00:04:24,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:04:25,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 00:04:25,185 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-29 00:04:25,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-29 00:04:25,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 00:04:25,333 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 00:04:25,333 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2023-11-29 00:04:25,441 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 31 treesize of output 13 [2023-11-29 00:04:25,494 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:04:25,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:04:25,605 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1032 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) (+ |c_ULTIMATE.start_create_~now~0#1.offset| 4)) v_ArrVal_1032) |c_ULTIMATE.start_create_~sll~0#1.base|) (+ |c_ULTIMATE.start_create_~sll~0#1.offset| 4))) 1)) is different from false [2023-11-29 00:04:25,611 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:04:25,611 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2023-11-29 00:04:25,618 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:04:25,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 39 [2023-11-29 00:04:25,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2023-11-29 00:04:25,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611956385] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:04:25,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:04:25,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 28 [2023-11-29 00:04:25,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023516907] [2023-11-29 00:04:25,868 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:04:25,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 00:04:25,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:04:25,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 00:04:25,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1008, Unknown=12, NotChecked=64, Total=1190 [2023-11-29 00:04:25,870 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand has 29 states, 24 states have (on average 1.625) internal successors, (39), 23 states have internal predecessors, (39), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 00:04:26,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:04:26,280 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2023-11-29 00:04:26,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:04:26,280 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 24 states have (on average 1.625) internal successors, (39), 23 states have internal predecessors, (39), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 24 [2023-11-29 00:04:26,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:04:26,281 INFO L225 Difference]: With dead ends: 60 [2023-11-29 00:04:26,281 INFO L226 Difference]: Without dead ends: 60 [2023-11-29 00:04:26,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=171, Invalid=1461, Unknown=12, NotChecked=78, Total=1722 [2023-11-29 00:04:26,282 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 15 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:04:26,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 294 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:04:26,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-29 00:04:26,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2023-11-29 00:04:26,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 53 states have internal predecessors, (65), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:04:26,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 71 transitions. [2023-11-29 00:04:26,285 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 71 transitions. Word has length 24 [2023-11-29 00:04:26,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:04:26,285 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 71 transitions. [2023-11-29 00:04:26,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 24 states have (on average 1.625) internal successors, (39), 23 states have internal predecessors, (39), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 00:04:26,285 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 71 transitions. [2023-11-29 00:04:26,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 00:04:26,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:26,286 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:04:26,291 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 00:04:26,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:04:26,486 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:04:26,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:26,487 INFO L85 PathProgramCache]: Analyzing trace with hash -30585450, now seen corresponding path program 1 times [2023-11-29 00:04:26,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:04:26,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045488712] [2023-11-29 00:04:26,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:26,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:04:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:27,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:04:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:27,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 00:04:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:27,181 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:04:27,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:04:27,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045488712] [2023-11-29 00:04:27,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045488712] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:04:27,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637883537] [2023-11-29 00:04:27,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:27,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:04:27,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:04:27,183 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:04:27,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 00:04:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:27,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-29 00:04:27,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:04:27,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 00:04:27,453 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 00:04:27,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 00:04:27,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 00:04:27,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 00:04:27,600 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 00:04:27,601 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 00:04:27,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 00:04:27,709 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 31 treesize of output 13 [2023-11-29 00:04:27,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-11-29 00:04:27,739 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:04:27,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:04:27,864 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_create_~sll~0#1.offset| 4))) (and (forall ((v_ArrVal_1122 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_1122) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse0) 4))) (forall ((v_ArrVal_1123 (Array Int Int)) (v_ArrVal_1122 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_1122) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse0) 12) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_1123) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse0)))))) is different from false [2023-11-29 00:04:27,874 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) (+ |c_ULTIMATE.start_create_~now~0#1.offset| 4))) (.cse1 (+ |c_ULTIMATE.start_create_~sll~0#1.offset| 4))) (and (forall ((v_ArrVal_1123 (Array Int Int)) (v_ArrVal_1122 (Array Int Int))) (<= (+ 12 (select (select (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_1122) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_1123) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1)))) (forall ((v_ArrVal_1122 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_1122) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1) 4))))) is different from false [2023-11-29 00:04:27,881 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:04:27,882 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2023-11-29 00:04:27,887 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:04:27,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 39 [2023-11-29 00:04:27,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2023-11-29 00:04:27,903 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:04:27,903 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2023-11-29 00:04:27,909 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:04:27,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2023-11-29 00:04:27,912 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:04:27,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:04:27,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-11-29 00:04:27,917 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:04:27,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:04:27,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-29 00:04:27,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-29 00:04:28,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637883537] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:04:28,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:04:28,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 28 [2023-11-29 00:04:28,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788636201] [2023-11-29 00:04:28,050 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:04:28,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 00:04:28,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:04:28,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 00:04:28,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1025, Unknown=2, NotChecked=130, Total=1260 [2023-11-29 00:04:28,052 INFO L87 Difference]: Start difference. First operand 58 states and 71 transitions. Second operand has 29 states, 24 states have (on average 1.625) internal successors, (39), 23 states have internal predecessors, (39), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 00:04:28,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:04:28,431 INFO L93 Difference]: Finished difference Result 59 states and 72 transitions. [2023-11-29 00:04:28,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:04:28,432 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 24 states have (on average 1.625) internal successors, (39), 23 states have internal predecessors, (39), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 24 [2023-11-29 00:04:28,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:04:28,432 INFO L225 Difference]: With dead ends: 59 [2023-11-29 00:04:28,433 INFO L226 Difference]: Without dead ends: 59 [2023-11-29 00:04:28,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=158, Invalid=1408, Unknown=2, NotChecked=154, Total=1722 [2023-11-29 00:04:28,434 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 9 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:04:28,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 350 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:04:28,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-29 00:04:28,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2023-11-29 00:04:28,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 53 states have internal predecessors, (64), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:04:28,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2023-11-29 00:04:28,437 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 24 [2023-11-29 00:04:28,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:04:28,438 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2023-11-29 00:04:28,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 24 states have (on average 1.625) internal successors, (39), 23 states have internal predecessors, (39), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 00:04:28,438 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2023-11-29 00:04:28,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-29 00:04:28,438 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:28,438 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:04:28,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 00:04:28,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 00:04:28,639 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:04:28,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:28,639 INFO L85 PathProgramCache]: Analyzing trace with hash 672201949, now seen corresponding path program 2 times [2023-11-29 00:04:28,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:04:28,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375866075] [2023-11-29 00:04:28,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:28,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:04:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:29,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:04:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:29,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 00:04:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:29,654 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:04:29,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:04:29,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375866075] [2023-11-29 00:04:29,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375866075] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:04:29,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883722991] [2023-11-29 00:04:29,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:04:29,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:04:29,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:04:29,656 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:04:29,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 00:04:29,787 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:04:29,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:04:29,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 78 conjunts are in the unsatisfiable core [2023-11-29 00:04:29,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:04:29,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 00:04:29,920 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 11 treesize of output 7 [2023-11-29 00:04:29,928 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 11 treesize of output 7 [2023-11-29 00:04:29,945 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 00:04:29,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 00:04:30,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-29 00:04:30,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-11-29 00:04:30,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:04:30,129 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-29 00:04:30,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 58 [2023-11-29 00:04:30,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:04:30,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 25 [2023-11-29 00:04:30,339 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:04:30,339 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:04:43,368 INFO L349 Elim1Store]: treesize reduction 1473, result has 47.5 percent of original size [2023-11-29 00:04:43,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 9 new quantified variables, introduced 17 case distinctions, treesize of input 3410 treesize of output 3170 [2023-11-29 00:04:44,134 INFO L349 Elim1Store]: treesize reduction 204, result has 39.5 percent of original size [2023-11-29 00:04:44,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 23 case distinctions, treesize of input 4662 treesize of output 3990 [2023-11-29 00:04:44,587 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:04:44,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 3113 treesize of output 3203 [2023-11-29 00:04:47,685 INFO L349 Elim1Store]: treesize reduction 1557, result has 46.0 percent of original size [2023-11-29 00:04:47,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 15 new quantified variables, introduced 68 case distinctions, treesize of input 11750 treesize of output 7267 [2023-11-29 00:04:49,151 INFO L349 Elim1Store]: treesize reduction 388, result has 40.9 percent of original size [2023-11-29 00:04:49,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 4946 treesize of output 4624 [2023-11-29 00:04:49,883 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:04:49,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 4462 treesize of output 4484 [2023-11-29 00:06:25,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-11-29 00:06:26,039 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:06:26,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2023-11-29 00:06:28,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2023-11-29 00:06:28,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2023-11-29 00:06:29,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2023-11-29 00:06:29,428 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:06:29,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 33 [2023-11-29 00:06:29,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2023-11-29 00:06:36,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-11-29 00:06:36,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-11-29 00:06:37,903 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:06:37,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 31 [2023-11-29 00:10:16,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2023-11-29 00:10:16,111 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-11-29 00:10:16,112 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-11-29 00:10:16,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 00:10:16,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 00:10:16,313 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:268) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:410) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:394) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:500) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:252) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:731) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:364) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 68 more [2023-11-29 00:10:16,316 INFO L158 Benchmark]: Toolchain (without parser) took 369054.57ms. Allocated memory was 151.0MB in the beginning and 469.8MB in the end (delta: 318.8MB). Free memory was 110.7MB in the beginning and 170.4MB in the end (delta: -59.7MB). Peak memory consumption was 289.6MB. Max. memory is 16.1GB. [2023-11-29 00:10:16,316 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 151.0MB. Free memory is still 121.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:10:16,317 INFO L158 Benchmark]: CACSL2BoogieTranslator took 363.60ms. Allocated memory is still 151.0MB. Free memory was 110.7MB in the beginning and 90.3MB in the end (delta: 20.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-29 00:10:16,317 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.00ms. Allocated memory is still 151.0MB. Free memory was 90.3MB in the beginning and 88.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:10:16,317 INFO L158 Benchmark]: Boogie Preprocessor took 46.85ms. Allocated memory is still 151.0MB. Free memory was 88.2MB in the beginning and 86.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:10:16,317 INFO L158 Benchmark]: RCFGBuilder took 481.11ms. Allocated memory is still 151.0MB. Free memory was 86.1MB in the beginning and 67.6MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-29 00:10:16,317 INFO L158 Benchmark]: TraceAbstraction took 368117.13ms. Allocated memory was 151.0MB in the beginning and 469.8MB in the end (delta: 318.8MB). Free memory was 66.7MB in the beginning and 170.4MB in the end (delta: -103.7MB). Peak memory consumption was 245.5MB. Max. memory is 16.1GB. [2023-11-29 00:10:16,318 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 151.0MB. Free memory is still 121.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 363.60ms. Allocated memory is still 151.0MB. Free memory was 110.7MB in the beginning and 90.3MB in the end (delta: 20.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.00ms. Allocated memory is still 151.0MB. Free memory was 90.3MB in the beginning and 88.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.85ms. Allocated memory is still 151.0MB. Free memory was 88.2MB in the beginning and 86.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 481.11ms. Allocated memory is still 151.0MB. Free memory was 86.1MB in the beginning and 67.6MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 368117.13ms. Allocated memory was 151.0MB in the beginning and 469.8MB in the end (delta: 318.8MB). Free memory was 66.7MB in the beginning and 170.4MB in the end (delta: -103.7MB). Peak memory consumption was 245.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-broom/sll-lst-data.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya --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 31f7a9efc2cb78d8789da558d79970717791666cb2a6a53f6727ed996af2c74a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:10:17,998 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:10:18,068 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2023-11-29 00:10:18,073 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:10:18,081 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:10:18,110 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:10:18,110 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:10:18,111 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:10:18,112 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:10:18,112 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:10:18,113 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:10:18,114 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:10:18,115 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:10:18,115 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:10:18,116 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:10:18,117 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:10:18,117 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:10:18,118 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:10:18,118 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 00:10:18,119 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 00:10:18,120 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 00:10:18,120 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:10:18,121 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 00:10:18,121 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 00:10:18,122 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 00:10:18,122 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:10:18,122 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:10:18,123 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:10:18,123 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:10:18,123 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:10:18,124 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:10:18,124 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:10:18,125 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:10:18,125 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:10:18,125 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 00:10:18,125 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 00:10:18,125 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:10:18,126 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:10:18,126 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:10:18,126 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:10:18,126 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 00:10:18,127 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_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31f7a9efc2cb78d8789da558d79970717791666cb2a6a53f6727ed996af2c74a [2023-11-29 00:10:18,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:10:18,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:10:18,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:10:18,441 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:10:18,442 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:10:18,443 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/memsafety-broom/sll-lst-data.i [2023-11-29 00:10:21,261 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:10:21,559 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:10:21,560 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/sv-benchmarks/c/memsafety-broom/sll-lst-data.i [2023-11-29 00:10:21,590 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/data/a3e18ce2e/55434a4c54b44f0f96a7c894b3d57fcf/FLAG135abdac0 [2023-11-29 00:10:21,605 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/data/a3e18ce2e/55434a4c54b44f0f96a7c894b3d57fcf [2023-11-29 00:10:21,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:10:21,609 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:10:21,610 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:10:21,611 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:10:21,616 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:10:21,616 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:10:21" (1/1) ... [2023-11-29 00:10:21,617 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f1199f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:21, skipping insertion in model container [2023-11-29 00:10:21,618 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:10:21" (1/1) ... [2023-11-29 00:10:21,698 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:10:22,000 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:10:22,012 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:10:22,049 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:10:22,080 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:10:22,081 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:22 WrapperNode [2023-11-29 00:10:22,081 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:10:22,082 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:10:22,082 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:10:22,082 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:10:22,089 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:22" (1/1) ... [2023-11-29 00:10:22,105 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:22" (1/1) ... [2023-11-29 00:10:22,127 INFO L138 Inliner]: procedures = 122, calls = 18, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 63 [2023-11-29 00:10:22,127 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:10:22,128 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:10:22,128 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:10:22,129 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:10:22,139 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:22" (1/1) ... [2023-11-29 00:10:22,140 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:22" (1/1) ... [2023-11-29 00:10:22,144 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:22" (1/1) ... [2023-11-29 00:10:22,163 INFO L175 MemorySlicer]: Split 8 memory accesses to 1 slices as follows [8]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 4 writes are split as follows [4]. [2023-11-29 00:10:22,163 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:22" (1/1) ... [2023-11-29 00:10:22,163 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:22" (1/1) ... [2023-11-29 00:10:22,172 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:22" (1/1) ... [2023-11-29 00:10:22,175 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:22" (1/1) ... [2023-11-29 00:10:22,178 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:22" (1/1) ... [2023-11-29 00:10:22,179 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:22" (1/1) ... [2023-11-29 00:10:22,182 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:10:22,183 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:10:22,184 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:10:22,184 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:10:22,185 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:22" (1/1) ... [2023-11-29 00:10:22,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:10:22,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:10:22,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:10:22,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:10:22,252 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero [2023-11-29 00:10:22,252 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero [2023-11-29 00:10:22,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 00:10:22,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 00:10:22,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 00:10:22,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:10:22,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 00:10:22,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:10:22,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:10:22,383 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:10:22,385 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:10:22,710 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:10:22,756 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:10:22,756 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 00:10:22,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:10:22 BoogieIcfgContainer [2023-11-29 00:10:22,757 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:10:22,759 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:10:22,759 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:10:22,762 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:10:22,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:10:21" (1/3) ... [2023-11-29 00:10:22,763 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42a4e7df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:10:22, skipping insertion in model container [2023-11-29 00:10:22,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:22" (2/3) ... [2023-11-29 00:10:22,763 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42a4e7df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:10:22, skipping insertion in model container [2023-11-29 00:10:22,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:10:22" (3/3) ... [2023-11-29 00:10:22,765 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-lst-data.i [2023-11-29 00:10:22,779 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:10:22,780 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-11-29 00:10:22,817 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:10:22,822 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;@5133787b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:10:22,822 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-29 00:10:22,825 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 42 states have internal predecessors, (48), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:10:22,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-29 00:10:22,831 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:22,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-29 00:10:22,832 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:10:22,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:22,837 INFO L85 PathProgramCache]: Analyzing trace with hash 4052539, now seen corresponding path program 1 times [2023-11-29 00:10:22,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:10:22,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1495707956] [2023-11-29 00:10:22,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:22,848 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:22,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:10:22,849 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:10:22,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-29 00:10:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:22,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:10:22,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:10:22,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 00:10:22,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:22,996 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:10:22,997 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:10:22,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1495707956] [2023-11-29 00:10:22,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1495707956] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:22,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:22,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:10:23,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434793507] [2023-11-29 00:10:23,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:23,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:10:23,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:10:23,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:10:23,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:10:23,041 INFO L87 Difference]: Start difference. First operand has 46 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 42 states have internal predecessors, (48), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:10:23,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:23,217 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2023-11-29 00:10:23,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:10:23,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-29 00:10:23,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:23,225 INFO L225 Difference]: With dead ends: 45 [2023-11-29 00:10:23,225 INFO L226 Difference]: Without dead ends: 44 [2023-11-29 00:10:23,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:10:23,230 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 2 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:23,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 57 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:10:23,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-29 00:10:23,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-11-29 00:10:23,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 40 states have internal predecessors, (43), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:10:23,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2023-11-29 00:10:23,261 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 4 [2023-11-29 00:10:23,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:23,262 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2023-11-29 00:10:23,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:10:23,262 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2023-11-29 00:10:23,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-29 00:10:23,263 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:23,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-29 00:10:23,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:10:23,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:23,464 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:10:23,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:23,465 INFO L85 PathProgramCache]: Analyzing trace with hash 4052540, now seen corresponding path program 1 times [2023-11-29 00:10:23,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:10:23,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [768772397] [2023-11-29 00:10:23,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:23,466 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:23,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:10:23,467 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:10:23,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-29 00:10:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:23,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:10:23,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:10:23,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 00:10:23,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:23,564 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:10:23,564 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:10:23,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [768772397] [2023-11-29 00:10:23,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [768772397] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:23,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:23,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:10:23,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682364929] [2023-11-29 00:10:23,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:23,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:10:23,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:10:23,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:10:23,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:10:23,569 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:10:23,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:23,807 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2023-11-29 00:10:23,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:10:23,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-29 00:10:23,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:23,809 INFO L225 Difference]: With dead ends: 43 [2023-11-29 00:10:23,809 INFO L226 Difference]: Without dead ends: 43 [2023-11-29 00:10:23,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:10:23,811 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 1 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:23,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 60 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:10:23,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-29 00:10:23,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-11-29 00:10:23,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 39 states have internal predecessors, (42), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:10:23,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2023-11-29 00:10:23,818 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 4 [2023-11-29 00:10:23,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:23,819 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2023-11-29 00:10:23,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:10:23,819 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2023-11-29 00:10:23,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 00:10:23,820 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:23,820 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:23,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-29 00:10:24,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:24,021 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:10:24,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:24,021 INFO L85 PathProgramCache]: Analyzing trace with hash 473086405, now seen corresponding path program 1 times [2023-11-29 00:10:24,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:10:24,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1281270081] [2023-11-29 00:10:24,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:24,023 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:24,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:10:24,025 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:10:24,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-29 00:10:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:24,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:10:24,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:10:24,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 00:10:24,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:24,142 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:10:24,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:10:24,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1281270081] [2023-11-29 00:10:24,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1281270081] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:24,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:24,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:10:24,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208611488] [2023-11-29 00:10:24,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:24,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:10:24,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:10:24,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:10:24,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:10:24,146 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:10:24,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:24,512 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2023-11-29 00:10:24,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:10:24,515 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2023-11-29 00:10:24,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:24,518 INFO L225 Difference]: With dead ends: 44 [2023-11-29 00:10:24,518 INFO L226 Difference]: Without dead ends: 44 [2023-11-29 00:10:24,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:10:24,520 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 12 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:24,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 93 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:10:24,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-29 00:10:24,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2023-11-29 00:10:24,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 36 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:10:24,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2023-11-29 00:10:24,528 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 7 [2023-11-29 00:10:24,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:24,529 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2023-11-29 00:10:24,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:10:24,529 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2023-11-29 00:10:24,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 00:10:24,530 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:24,530 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:24,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-29 00:10:24,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:24,733 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:10:24,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:24,733 INFO L85 PathProgramCache]: Analyzing trace with hash 473086406, now seen corresponding path program 1 times [2023-11-29 00:10:24,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:10:24,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1691939829] [2023-11-29 00:10:24,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:24,734 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:24,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:10:24,736 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:10:24,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-29 00:10:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:24,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:10:24,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:10:24,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 00:10:24,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:24,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:10:24,907 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:10:24,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1691939829] [2023-11-29 00:10:24,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1691939829] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:24,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:24,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:10:24,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030636726] [2023-11-29 00:10:24,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:24,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:10:24,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:10:24,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:10:24,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:10:24,910 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:10:25,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:25,232 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2023-11-29 00:10:25,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:10:25,234 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2023-11-29 00:10:25,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:25,234 INFO L225 Difference]: With dead ends: 43 [2023-11-29 00:10:25,235 INFO L226 Difference]: Without dead ends: 43 [2023-11-29 00:10:25,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:10:25,236 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 5 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:25,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 109 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:10:25,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-29 00:10:25,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2023-11-29 00:10:25,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 35 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:10:25,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2023-11-29 00:10:25,242 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 7 [2023-11-29 00:10:25,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:25,242 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2023-11-29 00:10:25,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:10:25,243 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2023-11-29 00:10:25,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-29 00:10:25,243 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:25,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:25,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-29 00:10:25,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:25,444 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:10:25,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:25,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1544932467, now seen corresponding path program 1 times [2023-11-29 00:10:25,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:10:25,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4331281] [2023-11-29 00:10:25,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:25,445 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:25,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:10:25,446 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:10:25,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-29 00:10:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:25,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 00:10:25,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:10:25,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 00:10:25,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:25,596 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:10:25,597 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:10:25,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4331281] [2023-11-29 00:10:25,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4331281] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:25,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:25,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:10:25,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359322393] [2023-11-29 00:10:25,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:25,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:10:25,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:10:25,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:10:25,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:10:25,600 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:10:25,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:25,936 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2023-11-29 00:10:25,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:10:25,937 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-29 00:10:25,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:25,938 INFO L225 Difference]: With dead ends: 47 [2023-11-29 00:10:25,938 INFO L226 Difference]: Without dead ends: 47 [2023-11-29 00:10:25,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:10:25,939 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 4 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:25,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 112 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:10:25,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-11-29 00:10:25,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2023-11-29 00:10:25,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 40 states have internal predecessors, (46), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:10:25,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2023-11-29 00:10:25,945 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 12 [2023-11-29 00:10:25,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:25,946 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2023-11-29 00:10:25,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:10:25,946 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2023-11-29 00:10:25,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-29 00:10:25,947 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:25,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:25,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-29 00:10:26,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:26,154 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:10:26,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:26,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1544932468, now seen corresponding path program 1 times [2023-11-29 00:10:26,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:10:26,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [19533571] [2023-11-29 00:10:26,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:26,155 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:26,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:10:26,155 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:10:26,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-29 00:10:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:26,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 00:10:26,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:10:26,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 00:10:26,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:26,379 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:10:26,379 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:10:26,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [19533571] [2023-11-29 00:10:26,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [19533571] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:26,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:26,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:10:26,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699439589] [2023-11-29 00:10:26,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:26,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:10:26,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:10:26,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:10:26,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:10:26,381 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:10:26,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:26,790 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2023-11-29 00:10:26,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:10:26,791 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-29 00:10:26,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:26,792 INFO L225 Difference]: With dead ends: 46 [2023-11-29 00:10:26,792 INFO L226 Difference]: Without dead ends: 46 [2023-11-29 00:10:26,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:10:26,793 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 3 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:26,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 122 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:10:26,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-11-29 00:10:26,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2023-11-29 00:10:26,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 40 states have internal predecessors, (45), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:10:26,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2023-11-29 00:10:26,799 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 12 [2023-11-29 00:10:26,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:26,799 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2023-11-29 00:10:26,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:10:26,800 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2023-11-29 00:10:26,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 00:10:26,800 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:26,801 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:26,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-29 00:10:27,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:27,001 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:10:27,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:27,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1328881519, now seen corresponding path program 1 times [2023-11-29 00:10:27,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:10:27,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [755151982] [2023-11-29 00:10:27,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:27,002 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:27,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:10:27,003 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:10:27,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-29 00:10:27,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:27,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 00:10:27,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:10:27,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 00:10:27,155 WARN L876 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base (_ BitVec 64))) (= (store |c_old(#valid)| alloc_and_zero_~pi~0.base (_ bv1 1)) |c_#valid|)) is different from true [2023-11-29 00:10:27,187 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 00:10:27,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-29 00:10:27,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-29 00:10:27,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:10:27,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:27,410 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:10:27,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [755151982] [2023-11-29 00:10:27,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [755151982] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:10:27,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:10:27,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2023-11-29 00:10:27,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242094552] [2023-11-29 00:10:27,411 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:10:27,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:10:27,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:10:27,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:10:27,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=43, Unknown=1, NotChecked=12, Total=72 [2023-11-29 00:10:27,413 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 00:10:27,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:27,870 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2023-11-29 00:10:27,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:10:27,872 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 14 [2023-11-29 00:10:27,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:27,873 INFO L225 Difference]: With dead ends: 47 [2023-11-29 00:10:27,873 INFO L226 Difference]: Without dead ends: 47 [2023-11-29 00:10:27,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=67, Unknown=1, NotChecked=16, Total=110 [2023-11-29 00:10:27,874 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 10 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:27,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 102 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 135 Invalid, 0 Unknown, 48 Unchecked, 0.4s Time] [2023-11-29 00:10:27,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-11-29 00:10:27,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2023-11-29 00:10:27,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 41 states have internal predecessors, (47), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:10:27,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2023-11-29 00:10:27,879 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 14 [2023-11-29 00:10:27,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:27,880 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2023-11-29 00:10:27,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 00:10:27,880 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2023-11-29 00:10:27,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 00:10:27,881 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:27,881 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:27,884 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-29 00:10:28,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:28,082 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:10:28,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:28,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1328881518, now seen corresponding path program 1 times [2023-11-29 00:10:28,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:10:28,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922019128] [2023-11-29 00:10:28,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:28,083 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:28,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:10:28,084 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:10:28,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-29 00:10:28,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:28,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 00:10:28,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:10:28,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 00:10:28,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 00:10:28,408 WARN L876 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base (_ BitVec 64))) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) (_ bv0 1)) (= (store |c_old(#length)| alloc_and_zero_~pi~0.base (select |c_#length| alloc_and_zero_~pi~0.base)) |c_#length|))) is different from true [2023-11-29 00:10:28,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:10:28,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 00:10:28,455 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 00:10:28,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 00:10:28,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-29 00:10:28,483 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:10:28,936 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:10:28,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922019128] [2023-11-29 00:10:28,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922019128] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:10:28,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2004006872] [2023-11-29 00:10:28,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:28,937 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 00:10:28,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 00:10:28,940 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 00:10:28,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-11-29 00:10:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:29,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 00:10:29,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:10:29,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 00:10:29,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 00:10:29,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:10:29,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 00:10:29,284 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 00:10:29,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 00:10:29,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-29 00:10:29,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:10:37,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2004006872] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:10:37,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:10:37,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2023-11-29 00:10:37,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582308980] [2023-11-29 00:10:37,620 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:10:37,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:10:37,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:10:37,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:10:37,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=70, Unknown=1, NotChecked=16, Total=110 [2023-11-29 00:10:37,621 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:10:38,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:38,257 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2023-11-29 00:10:38,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:10:38,258 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2023-11-29 00:10:38,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:38,259 INFO L225 Difference]: With dead ends: 51 [2023-11-29 00:10:38,259 INFO L226 Difference]: Without dead ends: 51 [2023-11-29 00:10:38,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=31, Invalid=104, Unknown=1, NotChecked=20, Total=156 [2023-11-29 00:10:38,260 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:38,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 109 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 175 Invalid, 0 Unknown, 52 Unchecked, 0.5s Time] [2023-11-29 00:10:38,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-29 00:10:38,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2023-11-29 00:10:38,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 44 states have internal predecessors, (51), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:10:38,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2023-11-29 00:10:38,263 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 14 [2023-11-29 00:10:38,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:38,264 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2023-11-29 00:10:38,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:10:38,264 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2023-11-29 00:10:38,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 00:10:38,264 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:38,265 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:38,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-29 00:10:38,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2023-11-29 00:10:38,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 00:10:38,666 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:10:38,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:38,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1378534341, now seen corresponding path program 1 times [2023-11-29 00:10:38,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:10:38,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983680111] [2023-11-29 00:10:38,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:38,667 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:38,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:10:38,668 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:10:38,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-29 00:10:38,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:38,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 00:10:38,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:10:38,776 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 11 treesize of output 7 [2023-11-29 00:10:38,782 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 11 treesize of output 7 [2023-11-29 00:10:38,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 00:10:38,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 00:10:39,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:39,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:10:39,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:39,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:10:39,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1983680111] [2023-11-29 00:10:39,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1983680111] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:10:39,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:10:39,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2023-11-29 00:10:39,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449753709] [2023-11-29 00:10:39,768 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:10:39,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 00:10:39,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:10:39,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 00:10:39,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=141, Unknown=8, NotChecked=0, Total=182 [2023-11-29 00:10:39,770 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 14 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 00:10:40,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:40,463 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2023-11-29 00:10:40,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:10:40,465 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2023-11-29 00:10:40,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:40,465 INFO L225 Difference]: With dead ends: 51 [2023-11-29 00:10:40,465 INFO L226 Difference]: Without dead ends: 51 [2023-11-29 00:10:40,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=43, Invalid=187, Unknown=10, NotChecked=0, Total=240 [2023-11-29 00:10:40,466 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 11 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:40,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 258 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 00:10:40,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-29 00:10:40,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2023-11-29 00:10:40,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 32 states have (on average 1.625) internal successors, (52), 45 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:10:40,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2023-11-29 00:10:40,471 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 14 [2023-11-29 00:10:40,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:40,471 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2023-11-29 00:10:40,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 00:10:40,472 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2023-11-29 00:10:40,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 00:10:40,472 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:40,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:40,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-29 00:10:40,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:40,673 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:10:40,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:40,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1379945847, now seen corresponding path program 1 times [2023-11-29 00:10:40,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:10:40,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [583643350] [2023-11-29 00:10:40,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:40,674 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:40,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:10:40,675 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:10:40,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-29 00:10:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:40,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:10:40,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:10:40,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:40,792 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:10:40,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:10:40,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [583643350] [2023-11-29 00:10:40,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [583643350] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:40,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:40,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:10:40,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330178005] [2023-11-29 00:10:40,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:40,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:10:40,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:10:40,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:10:40,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:10:40,794 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:10:40,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:40,995 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2023-11-29 00:10:40,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:10:40,996 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-11-29 00:10:40,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:40,997 INFO L225 Difference]: With dead ends: 54 [2023-11-29 00:10:40,997 INFO L226 Difference]: Without dead ends: 54 [2023-11-29 00:10:40,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:10:40,997 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 15 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:40,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 154 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:10:40,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-29 00:10:41,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2023-11-29 00:10:41,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 33 states have (on average 1.5757575757575757) internal successors, (52), 46 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:10:41,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2023-11-29 00:10:41,002 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 14 [2023-11-29 00:10:41,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:41,002 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2023-11-29 00:10:41,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:10:41,002 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2023-11-29 00:10:41,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 00:10:41,003 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:41,003 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:41,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-11-29 00:10:41,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:41,204 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:10:41,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:41,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1449774568, now seen corresponding path program 1 times [2023-11-29 00:10:41,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:10:41,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1610453819] [2023-11-29 00:10:41,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:41,205 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:41,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:10:41,205 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:10:41,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-29 00:10:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:41,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:10:41,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:10:41,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 00:10:41,328 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 19 treesize of output 1 [2023-11-29 00:10:41,350 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 23 treesize of output 11 [2023-11-29 00:10:41,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:10:41,366 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:10:41,366 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:10:41,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1610453819] [2023-11-29 00:10:41,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1610453819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:41,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:41,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:10:41,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548104585] [2023-11-29 00:10:41,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:41,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:10:41,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:10:41,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:10:41,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:10:41,368 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 00:10:41,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:41,713 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2023-11-29 00:10:41,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:10:41,715 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2023-11-29 00:10:41,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:41,715 INFO L225 Difference]: With dead ends: 50 [2023-11-29 00:10:41,715 INFO L226 Difference]: Without dead ends: 50 [2023-11-29 00:10:41,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:10:41,716 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:41,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 118 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:10:41,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-29 00:10:41,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-11-29 00:10:41,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 45 states have internal predecessors, (50), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:10:41,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2023-11-29 00:10:41,720 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 16 [2023-11-29 00:10:41,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:41,720 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2023-11-29 00:10:41,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 00:10:41,721 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2023-11-29 00:10:41,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 00:10:41,721 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:41,721 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:41,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-11-29 00:10:41,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:41,922 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:10:41,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:41,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1449774567, now seen corresponding path program 1 times [2023-11-29 00:10:41,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:10:41,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453384711] [2023-11-29 00:10:41,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:41,923 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:41,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:10:41,924 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:10:41,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-29 00:10:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:42,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 00:10:42,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:10:42,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 00:10:42,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 00:10:42,102 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 19 treesize of output 1 [2023-11-29 00:10:42,140 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 21 treesize of output 9 [2023-11-29 00:10:42,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:10:42,173 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:10:42,173 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:10:42,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453384711] [2023-11-29 00:10:42,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453384711] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:42,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:42,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:10:42,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830666139] [2023-11-29 00:10:42,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:42,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:10:42,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:10:42,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:10:42,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:10:42,175 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 00:10:42,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:42,534 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2023-11-29 00:10:42,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:10:42,535 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2023-11-29 00:10:42,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:42,535 INFO L225 Difference]: With dead ends: 49 [2023-11-29 00:10:42,535 INFO L226 Difference]: Without dead ends: 49 [2023-11-29 00:10:42,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:10:42,536 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 5 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:42,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 129 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:10:42,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-29 00:10:42,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-11-29 00:10:42,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 44 states have internal predecessors, (48), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:10:42,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2023-11-29 00:10:42,541 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 16 [2023-11-29 00:10:42,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:42,541 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2023-11-29 00:10:42,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 00:10:42,541 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2023-11-29 00:10:42,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 00:10:42,542 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:42,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:42,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-11-29 00:10:42,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:42,743 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:10:42,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:42,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1922936751, now seen corresponding path program 1 times [2023-11-29 00:10:42,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:10:42,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1760372272] [2023-11-29 00:10:42,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:42,744 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:42,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:10:42,744 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:10:42,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-29 00:10:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:42,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 00:10:42,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:10:42,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 00:10:42,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:10:42,903 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:10:42,903 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:10:42,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1760372272] [2023-11-29 00:10:42,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1760372272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:42,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:42,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:10:42,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599374934] [2023-11-29 00:10:42,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:42,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:10:42,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:10:42,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:10:42,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:10:42,905 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:10:43,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:43,271 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2023-11-29 00:10:43,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:10:43,271 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-29 00:10:43,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:43,272 INFO L225 Difference]: With dead ends: 60 [2023-11-29 00:10:43,272 INFO L226 Difference]: Without dead ends: 60 [2023-11-29 00:10:43,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:10:43,277 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 24 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:43,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 91 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:10:43,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-29 00:10:43,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 51. [2023-11-29 00:10:43,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 46 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:10:43,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2023-11-29 00:10:43,281 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 16 [2023-11-29 00:10:43,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:43,282 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2023-11-29 00:10:43,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:10:43,282 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2023-11-29 00:10:43,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 00:10:43,282 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:43,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:43,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-11-29 00:10:43,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:43,483 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:10:43,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:43,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1922936750, now seen corresponding path program 1 times [2023-11-29 00:10:43,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:10:43,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182155936] [2023-11-29 00:10:43,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:43,484 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:43,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:10:43,485 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:10:43,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-29 00:10:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:43,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 00:10:43,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:10:43,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 00:10:43,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:10:43,704 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:10:43,704 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:10:43,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182155936] [2023-11-29 00:10:43,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182155936] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:43,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:43,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:10:43,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871345433] [2023-11-29 00:10:43,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:43,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:10:43,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:10:43,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:10:43,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:10:43,706 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:10:44,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:44,180 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2023-11-29 00:10:44,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:10:44,181 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-29 00:10:44,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:44,182 INFO L225 Difference]: With dead ends: 68 [2023-11-29 00:10:44,182 INFO L226 Difference]: Without dead ends: 68 [2023-11-29 00:10:44,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:10:44,182 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 28 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:44,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 88 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:10:44,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-29 00:10:44,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 52. [2023-11-29 00:10:44,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 47 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:10:44,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2023-11-29 00:10:44,186 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 16 [2023-11-29 00:10:44,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:44,187 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2023-11-29 00:10:44,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:10:44,187 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2023-11-29 00:10:44,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 00:10:44,188 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:44,188 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:44,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-11-29 00:10:44,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:44,388 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:10:44,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:44,389 INFO L85 PathProgramCache]: Analyzing trace with hash 518501404, now seen corresponding path program 1 times [2023-11-29 00:10:44,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:10:44,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2052773452] [2023-11-29 00:10:44,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:44,390 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:44,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:10:44,391 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:10:44,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-29 00:10:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:44,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:10:44,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:10:44,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:10:44,551 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:10:44,551 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:10:44,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2052773452] [2023-11-29 00:10:44,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2052773452] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:44,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:44,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:10:44,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054416842] [2023-11-29 00:10:44,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:44,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:10:44,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:10:44,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:10:44,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:10:44,552 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:10:44,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:44,859 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2023-11-29 00:10:44,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:10:44,860 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-11-29 00:10:44,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:44,861 INFO L225 Difference]: With dead ends: 61 [2023-11-29 00:10:44,861 INFO L226 Difference]: Without dead ends: 61 [2023-11-29 00:10:44,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:10:44,862 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 39 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:44,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 135 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:10:44,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-29 00:10:44,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2023-11-29 00:10:44,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 38 states have (on average 1.368421052631579) internal successors, (52), 48 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:10:44,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2023-11-29 00:10:44,865 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 17 [2023-11-29 00:10:44,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:44,865 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2023-11-29 00:10:44,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:10:44,865 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2023-11-29 00:10:44,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 00:10:44,866 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:44,866 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:44,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-11-29 00:10:45,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:45,067 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:10:45,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:45,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1106251891, now seen corresponding path program 1 times [2023-11-29 00:10:45,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:10:45,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [673009370] [2023-11-29 00:10:45,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:45,067 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:45,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:10:45,068 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:10:45,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-29 00:10:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:45,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 00:10:45,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:10:45,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:10:45,395 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:10:45,395 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:10:45,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [673009370] [2023-11-29 00:10:45,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [673009370] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:45,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:45,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:10:45,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377058459] [2023-11-29 00:10:45,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:45,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:10:45,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:10:45,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:10:45,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:10:45,397 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:10:45,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:45,865 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2023-11-29 00:10:45,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:10:45,866 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-11-29 00:10:45,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:45,867 INFO L225 Difference]: With dead ends: 60 [2023-11-29 00:10:45,867 INFO L226 Difference]: Without dead ends: 60 [2023-11-29 00:10:45,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:10:45,868 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 34 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:45,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 106 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:10:45,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-29 00:10:45,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2023-11-29 00:10:45,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 51 states have internal predecessors, (58), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:10:45,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2023-11-29 00:10:45,871 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 18 [2023-11-29 00:10:45,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:45,872 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2023-11-29 00:10:45,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:10:45,872 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2023-11-29 00:10:45,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 00:10:45,873 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:45,873 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:45,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-11-29 00:10:46,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:46,074 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:10:46,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:46,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1065908695, now seen corresponding path program 1 times [2023-11-29 00:10:46,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:10:46,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [111285297] [2023-11-29 00:10:46,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:46,075 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:46,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:10:46,076 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:10:46,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-29 00:10:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:46,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 00:10:46,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:10:46,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:46,374 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:10:48,858 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-29 00:10:48,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2023-11-29 00:10:48,879 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-11-29 00:10:48,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2023-11-29 00:10:48,904 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:48,904 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:10:48,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [111285297] [2023-11-29 00:10:48,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [111285297] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:10:48,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:10:48,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2023-11-29 00:10:48,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643731325] [2023-11-29 00:10:48,905 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:10:48,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:10:48,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:10:48,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:10:48,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:10:48,906 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:10:49,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:49,658 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions. [2023-11-29 00:10:49,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:10:49,658 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2023-11-29 00:10:49,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:49,659 INFO L225 Difference]: With dead ends: 76 [2023-11-29 00:10:49,659 INFO L226 Difference]: Without dead ends: 76 [2023-11-29 00:10:49,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:10:49,660 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 44 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:49,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 104 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 00:10:49,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-29 00:10:49,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 65. [2023-11-29 00:10:49,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 50 states have (on average 1.46) internal successors, (73), 60 states have internal predecessors, (73), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:10:49,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 79 transitions. [2023-11-29 00:10:49,663 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 79 transitions. Word has length 21 [2023-11-29 00:10:49,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:49,663 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 79 transitions. [2023-11-29 00:10:49,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:10:49,663 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 79 transitions. [2023-11-29 00:10:49,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-29 00:10:49,664 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:49,664 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:49,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-11-29 00:10:49,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:49,865 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:10:49,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:49,865 INFO L85 PathProgramCache]: Analyzing trace with hash 706112589, now seen corresponding path program 1 times [2023-11-29 00:10:49,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:10:49,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1576991450] [2023-11-29 00:10:49,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:49,866 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:49,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:10:49,867 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:10:49,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-29 00:10:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:49,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:10:49,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:10:50,028 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:10:50,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:10:50,052 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2023-11-29 00:10:50,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2023-11-29 00:10:50,067 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:10:50,067 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:10:50,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1576991450] [2023-11-29 00:10:50,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1576991450] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:10:50,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:10:50,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2023-11-29 00:10:50,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107010886] [2023-11-29 00:10:50,068 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:10:50,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:10:50,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:10:50,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:10:50,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:10:50,069 INFO L87 Difference]: Start difference. First operand 65 states and 79 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:10:50,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:50,301 INFO L93 Difference]: Finished difference Result 72 states and 88 transitions. [2023-11-29 00:10:50,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:10:50,302 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2023-11-29 00:10:50,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:50,303 INFO L225 Difference]: With dead ends: 72 [2023-11-29 00:10:50,303 INFO L226 Difference]: Without dead ends: 72 [2023-11-29 00:10:50,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:10:50,303 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:50,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 84 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:10:50,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-11-29 00:10:50,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2023-11-29 00:10:50,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 55 states have (on average 1.4545454545454546) internal successors, (80), 65 states have internal predecessors, (80), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:10:50,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 86 transitions. [2023-11-29 00:10:50,306 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 86 transitions. Word has length 22 [2023-11-29 00:10:50,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:50,306 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 86 transitions. [2023-11-29 00:10:50,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:10:50,307 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 86 transitions. [2023-11-29 00:10:50,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-29 00:10:50,307 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:50,307 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:50,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-11-29 00:10:50,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:50,508 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:10:50,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:50,508 INFO L85 PathProgramCache]: Analyzing trace with hash 706112590, now seen corresponding path program 1 times [2023-11-29 00:10:50,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:10:50,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [564619333] [2023-11-29 00:10:50,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:50,509 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:50,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:10:50,510 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:10:50,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-29 00:10:50,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:50,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 00:10:50,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:10:50,789 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:10:50,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:10:51,198 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:10:51,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2023-11-29 00:10:51,946 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:10:51,946 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:10:51,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [564619333] [2023-11-29 00:10:51,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [564619333] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:10:51,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:10:51,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-29 00:10:51,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3707324] [2023-11-29 00:10:51,947 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:10:51,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 00:10:51,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:10:51,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 00:10:51,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:10:51,948 INFO L87 Difference]: Start difference. First operand 70 states and 86 transitions. Second operand has 14 states, 11 states have (on average 3.0) internal successors, (33), 12 states have internal predecessors, (33), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 00:10:53,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:53,247 INFO L93 Difference]: Finished difference Result 71 states and 87 transitions. [2023-11-29 00:10:53,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:10:53,249 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 3.0) internal successors, (33), 12 states have internal predecessors, (33), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 22 [2023-11-29 00:10:53,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:53,250 INFO L225 Difference]: With dead ends: 71 [2023-11-29 00:10:53,250 INFO L226 Difference]: Without dead ends: 71 [2023-11-29 00:10:53,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:10:53,251 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 6 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:53,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 319 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 00:10:53,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-11-29 00:10:53,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2023-11-29 00:10:53,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 55 states have (on average 1.4363636363636363) internal successors, (79), 65 states have internal predecessors, (79), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:10:53,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 85 transitions. [2023-11-29 00:10:53,254 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 85 transitions. Word has length 22 [2023-11-29 00:10:53,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:53,254 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 85 transitions. [2023-11-29 00:10:53,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 3.0) internal successors, (33), 12 states have internal predecessors, (33), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 00:10:53,255 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 85 transitions. [2023-11-29 00:10:53,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-29 00:10:53,255 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:53,255 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:53,258 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-11-29 00:10:53,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:53,456 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:10:53,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:53,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1316567364, now seen corresponding path program 1 times [2023-11-29 00:10:53,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:10:53,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853184605] [2023-11-29 00:10:53,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:53,457 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:10:53,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:10:53,457 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:10:53,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-29 00:10:53,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:53,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 00:10:53,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:10:53,776 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_destroy_~l#1.base_18| (_ BitVec 64))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_destroy_~l#1.base_18| (_ bv0 1)) |c_#valid|) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_destroy_~l#1.base_18|) (_ bv0 1)))) is different from true [2023-11-29 00:10:53,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-11-29 00:10:53,788 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:10:58,070 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:10:58,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853184605] [2023-11-29 00:10:58,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853184605] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:10:58,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1032805382] [2023-11-29 00:10:58,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:58,070 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 00:10:58,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 00:10:58,071 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 00:10:58,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2023-11-29 00:10:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:58,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 00:10:58,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:10:58,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:10:58,556 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:11:02,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1032805382] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:11:02,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:11:02,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2023-11-29 00:11:02,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773523793] [2023-11-29 00:11:02,789 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:11:02,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 00:11:02,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:11:02,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 00:11:02,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=204, Unknown=2, NotChecked=28, Total=272 [2023-11-29 00:11:02,790 INFO L87 Difference]: Start difference. First operand 70 states and 85 transitions. Second operand has 16 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:11:03,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:11:03,561 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2023-11-29 00:11:03,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:11:03,561 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2023-11-29 00:11:03,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:11:03,562 INFO L225 Difference]: With dead ends: 75 [2023-11-29 00:11:03,562 INFO L226 Difference]: Without dead ends: 62 [2023-11-29 00:11:03,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=66, Invalid=316, Unknown=2, NotChecked=36, Total=420 [2023-11-29 00:11:03,563 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:11:03,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 182 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 312 Invalid, 0 Unknown, 53 Unchecked, 0.6s Time] [2023-11-29 00:11:03,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-29 00:11:03,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-11-29 00:11:03,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 47 states have (on average 1.4893617021276595) internal successors, (70), 57 states have internal predecessors, (70), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:11:03,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2023-11-29 00:11:03,567 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 22 [2023-11-29 00:11:03,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:11:03,567 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2023-11-29 00:11:03,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:11:03,567 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2023-11-29 00:11:03,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 00:11:03,568 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:11:03,568 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:11:03,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2023-11-29 00:11:03,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-11-29 00:11:03,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:11:03,969 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:11:03,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:03,969 INFO L85 PathProgramCache]: Analyzing trace with hash 19067371, now seen corresponding path program 1 times [2023-11-29 00:11:03,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:11:03,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331445290] [2023-11-29 00:11:03,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:03,970 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:11:03,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:11:03,971 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:11:03,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-11-29 00:11:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:04,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 00:11:04,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:11:04,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 00:11:04,252 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 00:11:04,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 00:11:04,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 00:11:04,510 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 00:11:04,511 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 00:11:04,527 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 33 treesize of output 15 [2023-11-29 00:11:04,744 INFO L349 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2023-11-29 00:11:04,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 36 [2023-11-29 00:11:04,756 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:11:04,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:11:13,113 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_464 (Array (_ BitVec 64) (_ BitVec 64)))) (= (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_464) |c_ULTIMATE.start_create_~now~0#1.base|) (bvadd |c_ULTIMATE.start_create_~now~0#1.offset| (_ bv4 64)))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 00:11:13,126 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_464 (Array (_ BitVec 64) (_ BitVec 64)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd |c_ULTIMATE.start_create_~now~0#1.offset| (_ bv4 64)))) (select (select (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) .cse0) v_ArrVal_464) |c_ULTIMATE.start_create_~now~0#1.base|) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 00:11:13,139 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:11:13,139 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2023-11-29 00:11:13,143 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 44 treesize of output 32 [2023-11-29 00:11:13,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 00:11:17,335 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:11:17,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1331445290] [2023-11-29 00:11:17,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1331445290] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:11:17,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1205950171] [2023-11-29 00:11:17,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:17,335 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 00:11:17,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 00:11:17,336 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 00:11:17,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2023-11-29 00:11:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:17,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 00:11:17,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:11:17,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 00:11:17,659 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 00:11:17,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 00:11:17,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 00:11:17,744 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 00:11:17,744 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 00:11:17,769 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 33 treesize of output 15 [2023-11-29 00:11:17,910 INFO L349 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2023-11-29 00:11:17,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 36 [2023-11-29 00:11:17,925 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:11:17,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:11:22,790 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_516 (Array (_ BitVec 64) (_ BitVec 64)))) (= (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_516) |c_ULTIMATE.start_create_~now~0#1.base|) (bvadd |c_ULTIMATE.start_create_~now~0#1.offset| (_ bv4 64))))) (_ bv0 1))) is different from false [2023-11-29 00:11:22,805 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_516 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd |c_ULTIMATE.start_create_~now~0#1.offset| (_ bv4 64)))) (select (select (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) .cse0) v_ArrVal_516) |c_ULTIMATE.start_create_~now~0#1.base|) .cse0)))))) is different from false [2023-11-29 00:11:22,815 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:11:22,816 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2023-11-29 00:11:22,818 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 44 treesize of output 32 [2023-11-29 00:11:22,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 00:11:22,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1205950171] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:11:22,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:11:22,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2023-11-29 00:11:22,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997893326] [2023-11-29 00:11:22,922 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:11:22,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 00:11:22,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:11:22,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 00:11:22,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=251, Unknown=6, NotChecked=140, Total=462 [2023-11-29 00:11:22,924 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:11:23,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:11:23,467 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2023-11-29 00:11:23,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:11:23,468 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 24 [2023-11-29 00:11:23,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:11:23,468 INFO L225 Difference]: With dead ends: 61 [2023-11-29 00:11:23,468 INFO L226 Difference]: Without dead ends: 61 [2023-11-29 00:11:23,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=73, Invalid=279, Unknown=6, NotChecked=148, Total=506 [2023-11-29 00:11:23,469 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 9 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:11:23,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 157 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 205 Invalid, 2 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 00:11:23,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-29 00:11:23,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2023-11-29 00:11:23,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 47 states have (on average 1.4680851063829787) internal successors, (69), 56 states have internal predecessors, (69), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:11:23,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 75 transitions. [2023-11-29 00:11:23,472 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 75 transitions. Word has length 24 [2023-11-29 00:11:23,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:11:23,472 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 75 transitions. [2023-11-29 00:11:23,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:11:23,472 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 75 transitions. [2023-11-29 00:11:23,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 00:11:23,473 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:11:23,473 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:11:23,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2023-11-29 00:11:23,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-11-29 00:11:23,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:11:23,874 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:11:23,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:23,874 INFO L85 PathProgramCache]: Analyzing trace with hash 19067372, now seen corresponding path program 1 times [2023-11-29 00:11:23,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:11:23,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [401627751] [2023-11-29 00:11:23,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:23,875 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:11:23,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:11:23,875 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:11:23,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-11-29 00:11:24,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:24,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-29 00:11:24,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:11:24,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 00:11:24,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 00:11:24,259 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 00:11:24,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 00:11:24,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 00:11:24,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 00:11:24,600 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 00:11:24,600 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 68 [2023-11-29 00:11:24,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 00:11:24,643 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 44 treesize of output 20 [2023-11-29 00:11:24,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-11-29 00:11:24,831 WARN L876 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base (_ BitVec 64))) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) (_ bv0 1)) (= (store |c_old(#length)| alloc_and_zero_~pi~0.base (select |c_#length| alloc_and_zero_~pi~0.base)) |c_#length|))) is different from true [2023-11-29 00:11:24,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:11:24,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 00:11:24,888 INFO L349 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-11-29 00:11:24,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-11-29 00:11:24,922 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2023-11-29 00:11:24,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:11:29,558 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:11:29,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [401627751] [2023-11-29 00:11:29,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [401627751] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:11:29,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1753233767] [2023-11-29 00:11:29,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:29,563 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 00:11:29,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 00:11:29,564 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 00:11:29,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2023-11-29 00:11:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:29,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-29 00:11:29,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:11:29,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 00:11:29,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 00:11:30,056 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 00:11:30,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 00:11:30,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 00:11:30,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 00:11:30,233 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 00:11:30,234 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 68 [2023-11-29 00:11:30,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 00:11:30,298 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 44 treesize of output 20 [2023-11-29 00:11:30,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-11-29 00:11:30,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:11:30,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 00:11:30,509 INFO L349 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-11-29 00:11:30,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-11-29 00:11:30,514 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2023-11-29 00:11:30,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:11:38,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1753233767] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:11:38,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:11:38,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2023-11-29 00:11:38,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293221457] [2023-11-29 00:11:38,955 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:11:38,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 00:11:38,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:11:38,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 00:11:38,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=228, Unknown=2, NotChecked=30, Total=306 [2023-11-29 00:11:38,957 INFO L87 Difference]: Start difference. First operand 61 states and 75 transitions. Second operand has 16 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:11:40,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:11:40,119 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2023-11-29 00:11:40,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 00:11:40,120 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 24 [2023-11-29 00:11:40,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:11:40,121 INFO L225 Difference]: With dead ends: 58 [2023-11-29 00:11:40,121 INFO L226 Difference]: Without dead ends: 58 [2023-11-29 00:11:40,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=83, Invalid=381, Unknown=2, NotChecked=40, Total=506 [2023-11-29 00:11:40,122 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 5 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:11:40,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 180 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 259 Invalid, 0 Unknown, 41 Unchecked, 0.8s Time] [2023-11-29 00:11:40,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-11-29 00:11:40,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2023-11-29 00:11:40,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 47 states have (on average 1.4042553191489362) internal successors, (66), 53 states have internal predecessors, (66), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:11:40,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2023-11-29 00:11:40,125 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 24 [2023-11-29 00:11:40,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:11:40,126 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2023-11-29 00:11:40,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:11:40,126 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2023-11-29 00:11:40,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 00:11:40,127 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:11:40,127 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:11:40,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2023-11-29 00:11:40,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-11-29 00:11:40,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:11:40,528 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:11:40,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:40,528 INFO L85 PathProgramCache]: Analyzing trace with hash -30585451, now seen corresponding path program 1 times [2023-11-29 00:11:40,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:11:40,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749279363] [2023-11-29 00:11:40,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:40,529 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:11:40,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:11:40,530 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:11:40,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-11-29 00:11:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:40,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 00:11:40,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:11:40,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 00:11:40,875 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 00:11:40,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 00:11:40,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 00:11:41,183 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 00:11:41,183 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 00:11:41,377 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 33 treesize of output 15 [2023-11-29 00:11:41,442 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:11:41,442 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:11:41,640 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_668 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_668) |c_ULTIMATE.start_create_~sll~0#1.base|) (bvadd (_ bv4 64) |c_ULTIMATE.start_create_~sll~0#1.offset|))) (_ bv1 1)))) is different from false [2023-11-29 00:11:41,666 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_668 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) (bvadd |c_ULTIMATE.start_create_~now~0#1.offset| (_ bv4 64))) v_ArrVal_668) |c_ULTIMATE.start_create_~sll~0#1.base|) (bvadd (_ bv4 64) |c_ULTIMATE.start_create_~sll~0#1.offset|)))))) is different from false [2023-11-29 00:11:41,683 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:11:41,683 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2023-11-29 00:11:41,707 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:11:41,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 00:11:41,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 00:11:51,656 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:11:51,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749279363] [2023-11-29 00:11:51,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749279363] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:11:51,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1148750917] [2023-11-29 00:11:51,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:51,657 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 00:11:51,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 00:11:51,658 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 00:11:51,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2023-11-29 00:11:51,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:51,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-29 00:11:51,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:11:51,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 00:11:52,285 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 00:11:52,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 00:11:52,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2023-11-29 00:11:52,621 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 00:11:52,621 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-11-29 00:11:52,865 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 27 treesize of output 15 [2023-11-29 00:11:52,930 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:11:52,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:12:01,472 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:12:01,472 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2023-11-29 00:12:01,499 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:12:01,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 00:12:01,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 00:12:16,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1148750917] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:12:16,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:12:16,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 23 [2023-11-29 00:12:16,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109792572] [2023-11-29 00:12:16,591 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:12:16,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 00:12:16,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:12:16,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 00:12:16,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=819, Unknown=8, NotChecked=118, Total=1056 [2023-11-29 00:12:16,593 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand has 24 states, 20 states have (on average 1.75) internal successors, (35), 19 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 00:12:18,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:12:18,014 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2023-11-29 00:12:18,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:12:18,014 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 1.75) internal successors, (35), 19 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 24 [2023-11-29 00:12:18,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:12:18,015 INFO L225 Difference]: With dead ends: 63 [2023-11-29 00:12:18,015 INFO L226 Difference]: Without dead ends: 63 [2023-11-29 00:12:18,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 34.6s TimeCoverageRelationStatistics Valid=139, Invalid=983, Unknown=8, NotChecked=130, Total=1260 [2023-11-29 00:12:18,017 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 8 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:12:18,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 220 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 00:12:18,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-11-29 00:12:18,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 60. [2023-11-29 00:12:18,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 55 states have internal predecessors, (70), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:12:18,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 76 transitions. [2023-11-29 00:12:18,021 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 76 transitions. Word has length 24 [2023-11-29 00:12:18,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:12:18,021 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 76 transitions. [2023-11-29 00:12:18,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 1.75) internal successors, (35), 19 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 00:12:18,022 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 76 transitions. [2023-11-29 00:12:18,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 00:12:18,022 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:12:18,022 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:12:18,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2023-11-29 00:12:18,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2023-11-29 00:12:18,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 00:12:18,423 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:12:18,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:12:18,423 INFO L85 PathProgramCache]: Analyzing trace with hash -30585450, now seen corresponding path program 1 times [2023-11-29 00:12:18,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:12:18,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1336487893] [2023-11-29 00:12:18,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:18,424 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:12:18,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:12:18,425 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:12:18,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-11-29 00:12:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:18,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-29 00:12:18,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:12:18,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 00:12:18,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 00:12:18,855 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 00:12:18,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 00:12:18,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 00:12:18,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 00:12:19,281 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 00:12:19,281 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 00:12:19,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 00:12:23,619 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 31 treesize of output 13 [2023-11-29 00:12:23,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-11-29 00:12:23,712 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:12:23,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:12:29,027 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 64) |c_ULTIMATE.start_create_~sll~0#1.offset|))) (and (forall ((v_ArrVal_749 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_749) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv4 64)) (bvadd .cse0 (_ bv12 64))))) (forall ((v_ArrVal_749 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_750 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_749) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1) (_ bv12 64)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_750) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1)))))) is different from false [2023-11-29 00:12:29,145 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) (bvadd |c_ULTIMATE.start_create_~now~0#1.offset| (_ bv4 64)))) (.cse1 (bvadd (_ bv4 64) |c_ULTIMATE.start_create_~sll~0#1.offset|))) (and (forall ((v_ArrVal_749 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_750 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_749) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1) (_ bv12 64)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_750) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1)))) (forall ((v_ArrVal_749 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_749) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1))) (bvule (bvadd .cse2 (_ bv4 64)) (bvadd .cse2 (_ bv12 64))))))) is different from false [2023-11-29 00:12:29,174 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:12:29,175 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2023-11-29 00:12:29,194 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:12:29,194 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2023-11-29 00:12:29,242 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:12:29,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 61 [2023-11-29 00:12:29,302 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:12:29,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 89 [2023-11-29 00:12:29,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-29 00:12:29,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 00:12:29,552 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:12:29,553 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 36 [2023-11-29 00:12:29,683 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:12:29,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 47 [2023-11-29 00:12:29,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 00:12:30,347 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:12:30,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1336487893] [2023-11-29 00:12:30,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1336487893] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:12:30,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [826664099] [2023-11-29 00:12:30,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:30,347 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 00:12:30,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 00:12:30,348 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 00:12:30,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2023-11-29 00:12:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:30,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-29 00:12:30,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:12:30,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 00:12:31,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 00:12:31,225 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 00:12:31,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 00:12:31,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2023-11-29 00:12:31,424 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 11 treesize of output 7 [2023-11-29 00:12:31,810 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 00:12:31,811 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 00:12:31,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 00:12:32,221 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 25 treesize of output 13 [2023-11-29 00:12:32,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 00:12:32,248 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:12:32,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:12:32,509 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 64) |c_ULTIMATE.start_create_~sll~0#1.offset|))) (and (forall ((v_ArrVal_791 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_791) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv4 64)) (bvadd .cse0 (_ bv12 64))))) (forall ((v_ArrVal_792 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_791 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_791) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1) (_ bv12 64)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_792) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1)))))) is different from false [2023-11-29 00:12:32,624 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) (bvadd |c_ULTIMATE.start_create_~now~0#1.offset| (_ bv4 64)))) (.cse1 (bvadd (_ bv4 64) |c_ULTIMATE.start_create_~sll~0#1.offset|))) (and (forall ((v_ArrVal_792 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_791 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_791) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1) (_ bv12 64)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_792) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1)))) (forall ((v_ArrVal_791 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_791) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1))) (bvule (bvadd .cse2 (_ bv4 64)) (bvadd .cse2 (_ bv12 64))))))) is different from false [2023-11-29 00:12:32,656 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:12:32,656 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 36 [2023-11-29 00:12:32,707 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:12:32,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 47 [2023-11-29 00:12:32,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 00:12:32,836 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:12:32,837 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2023-11-29 00:12:32,870 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:12:32,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2023-11-29 00:12:32,879 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:12:32,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:12:32,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-11-29 00:12:32,903 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:12:32,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:12:32,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-29 00:12:33,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [826664099] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:12:33,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:12:33,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 23 [2023-11-29 00:12:33,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127206721] [2023-11-29 00:12:33,286 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:12:33,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 00:12:33,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:12:33,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 00:12:33,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=733, Unknown=6, NotChecked=228, Total=1056 [2023-11-29 00:12:33,287 INFO L87 Difference]: Start difference. First operand 60 states and 76 transitions. Second operand has 24 states, 20 states have (on average 1.75) internal successors, (35), 19 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 00:12:35,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:12:35,031 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2023-11-29 00:12:35,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:12:35,032 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 1.75) internal successors, (35), 19 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 24 [2023-11-29 00:12:35,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:12:35,033 INFO L225 Difference]: With dead ends: 62 [2023-11-29 00:12:35,033 INFO L226 Difference]: Without dead ends: 62 [2023-11-29 00:12:35,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=126, Invalid=940, Unknown=6, NotChecked=260, Total=1332 [2023-11-29 00:12:35,034 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 10 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:12:35,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 318 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 00:12:35,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-29 00:12:35,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2023-11-29 00:12:35,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 49 states have (on average 1.4081632653061225) internal successors, (69), 55 states have internal predecessors, (69), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:12:35,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 75 transitions. [2023-11-29 00:12:35,037 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 75 transitions. Word has length 24 [2023-11-29 00:12:35,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:12:35,037 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 75 transitions. [2023-11-29 00:12:35,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 1.75) internal successors, (35), 19 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 00:12:35,037 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 75 transitions. [2023-11-29 00:12:35,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-29 00:12:35,038 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:12:35,038 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:12:35,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2023-11-29 00:12:35,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-11-29 00:12:35,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:12:35,439 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:12:35,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:12:35,439 INFO L85 PathProgramCache]: Analyzing trace with hash 672201949, now seen corresponding path program 2 times [2023-11-29 00:12:35,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:12:35,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764595806] [2023-11-29 00:12:35,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:12:35,439 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:12:35,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:12:35,440 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:12:35,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fe9231-4b73-4f62-bf4c-4025e4021aff/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-11-29 00:12:35,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:12:35,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:12:35,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-29 00:12:35,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:12:35,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 00:12:35,887 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 11 treesize of output 7 [2023-11-29 00:12:35,897 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 11 treesize of output 7 [2023-11-29 00:12:36,021 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 00:12:36,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 00:12:36,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-29 00:12:36,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-11-29 00:12:36,449 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-29 00:12:36,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 58 [2023-11-29 00:12:36,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 25 [2023-11-29 00:12:37,150 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:12:37,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:12:38,359 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse7 (bvadd |c_ULTIMATE.start_create_~now~0#1.offset| (_ bv4 64)))) (let ((.cse3 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) .cse7))) (let ((.cse0 (select |c_#memory_$Pointer$#0.offset| .cse3)) (.cse4 (select |c_#memory_$Pointer$#0.base| .cse3)) (.cse1 (select (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~0#1.base|) .cse7)) (.cse5 (bvadd (_ bv4 64) |c_ULTIMATE.start_create_~sll~0#1.offset|))) (and (forall ((v_ArrVal_835 (Array (_ BitVec 64) (_ BitVec 64)))) (or (not (= (store .cse0 .cse1 (select v_ArrVal_835 .cse1)) v_ArrVal_835)) (forall ((v_ArrVal_837 (_ BitVec 64))) (= (_ bv0 64) (let ((.cse2 (store |c_#memory_$Pointer$#0.offset| .cse3 v_ArrVal_835))) (select (select .cse2 (select (select (store |c_#memory_$Pointer$#0.base| .cse3 (store .cse4 .cse1 v_ArrVal_837)) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse5)) (bvadd (_ bv4 64) (select (select .cse2 |c_ULTIMATE.start_create_~sll~0#1.base|) .cse5)))))))) (forall ((v_ArrVal_835 (Array (_ BitVec 64) (_ BitVec 64)))) (or (not (= (store .cse0 .cse1 (select v_ArrVal_835 .cse1)) v_ArrVal_835)) (forall ((v_ArrVal_837 (_ BitVec 64))) (= (_ bv0 64) (select (let ((.cse6 (store |c_#memory_$Pointer$#0.base| .cse3 (store .cse4 .cse1 v_ArrVal_837)))) (select .cse6 (select (select .cse6 |c_ULTIMATE.start_create_~sll~0#1.base|) .cse5))) (bvadd (_ bv4 64) (select (select (store |c_#memory_$Pointer$#0.offset| .cse3 v_ArrVal_835) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse5))))))))))) is different from false [2023-11-29 00:13:46,217 WARN L293 SmtUtils]: Spent 1.10m on a formula simplification. DAG size of input: 185 DAG size of output: 142 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-29 00:13:46,217 INFO L349 Elim1Store]: treesize reduction 860, result has 46.2 percent of original size [2023-11-29 00:13:46,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 9 new quantified variables, introduced 17 case distinctions, treesize of input 3284 treesize of output 2504 [2023-11-29 00:13:54,058 WARN L293 SmtUtils]: Spent 7.72s on a formula simplification. DAG size of input: 134 DAG size of output: 74 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-29 00:13:54,059 INFO L349 Elim1Store]: treesize reduction 204, result has 39.5 percent of original size [2023-11-29 00:13:54,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 23 case distinctions, treesize of input 3986 treesize of output 3370 [2023-11-29 00:13:54,485 INFO L224 Elim1Store]: Index analysis took 247 ms [2023-11-29 00:13:58,250 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:13:58,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 2958 treesize of output 3034 [2023-11-29 00:13:58,861 INFO L224 Elim1Store]: Index analysis took 265 ms [2023-11-29 00:17:20,491 WARN L293 SmtUtils]: Spent 3.36m on a formula simplification. DAG size of input: 412 DAG size of output: 271 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-29 00:17:20,491 INFO L349 Elim1Store]: treesize reduction 1781, result has 43.5 percent of original size [2023-11-29 00:17:20,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 14 new quantified variables, introduced 68 case distinctions, treesize of input 12644 treesize of output 11202 [2023-11-29 00:17:21,987 INFO L224 Elim1Store]: Index analysis took 481 ms [2023-11-29 00:17:29,158 WARN L293 SmtUtils]: Spent 6.96s on a formula simplification. DAG size of input: 139 DAG size of output: 86 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-29 00:17:29,158 INFO L349 Elim1Store]: treesize reduction 372, result has 42.0 percent of original size [2023-11-29 00:17:29,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 5044 treesize of output 5098 [2023-11-29 00:17:30,095 INFO L224 Elim1Store]: Index analysis took 513 ms [2023-11-29 00:17:32,485 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:17:32,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 3253 treesize of output 3365