./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-broom/sll-middle-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_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-broom/sll-middle-data.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 1f089d84611e193726b0906f7c8f41bdfbd2779029235be3e70f3cbcf8b5071e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:01:42,176 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:01:42,245 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2023-11-29 06:01:42,250 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:01:42,250 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:01:42,276 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:01:42,276 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:01:42,277 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:01:42,278 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:01:42,278 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:01:42,279 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:01:42,279 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:01:42,280 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:01:42,281 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:01:42,281 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:01:42,282 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:01:42,283 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:01:42,283 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:01:42,284 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 06:01:42,284 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 06:01:42,285 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 06:01:42,285 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:01:42,286 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 06:01:42,286 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 06:01:42,287 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:01:42,287 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:01:42,288 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:01:42,288 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:01:42,288 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:01:42,289 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:01:42,289 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:01:42,290 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:01:42,290 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:01:42,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:01:42,291 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:01:42,291 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:01:42,291 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:01:42,292 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:01:42,292 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_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f089d84611e193726b0906f7c8f41bdfbd2779029235be3e70f3cbcf8b5071e [2023-11-29 06:01:42,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:01:42,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:01:42,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:01:42,570 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:01:42,570 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:01:42,571 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/memsafety-broom/sll-middle-data.i [2023-11-29 06:01:45,473 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:01:45,755 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:01:45,756 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/sv-benchmarks/c/memsafety-broom/sll-middle-data.i [2023-11-29 06:01:45,783 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/data/725fd2915/d095a120c36f43f9ae16436c50f47977/FLAG583ec68ca [2023-11-29 06:01:45,796 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/data/725fd2915/d095a120c36f43f9ae16436c50f47977 [2023-11-29 06:01:45,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:01:45,800 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:01:45,801 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:01:45,801 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:01:45,806 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:01:45,807 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:01:45" (1/1) ... [2023-11-29 06:01:45,807 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4891f655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:01:45, skipping insertion in model container [2023-11-29 06:01:45,808 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:01:45" (1/1) ... [2023-11-29 06:01:45,880 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:01:46,163 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:01:46,176 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:01:46,223 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:01:46,256 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:01:46,257 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:01:46 WrapperNode [2023-11-29 06:01:46,257 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:01:46,258 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:01:46,258 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:01:46,259 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:01:46,266 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:01:46" (1/1) ... [2023-11-29 06:01:46,281 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:01:46" (1/1) ... [2023-11-29 06:01:46,308 INFO L138 Inliner]: procedures = 121, calls = 21, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 76 [2023-11-29 06:01:46,308 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:01:46,309 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:01:46,309 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:01:46,309 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:01:46,321 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:01:46" (1/1) ... [2023-11-29 06:01:46,322 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:01:46" (1/1) ... [2023-11-29 06:01:46,326 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:01:46" (1/1) ... [2023-11-29 06:01:46,345 INFO L175 MemorySlicer]: Split 11 memory accesses to 1 slices as follows [11]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 6 writes are split as follows [6]. [2023-11-29 06:01:46,345 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:01:46" (1/1) ... [2023-11-29 06:01:46,345 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:01:46" (1/1) ... [2023-11-29 06:01:46,353 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:01:46" (1/1) ... [2023-11-29 06:01:46,357 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:01:46" (1/1) ... [2023-11-29 06:01:46,359 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:01:46" (1/1) ... [2023-11-29 06:01:46,361 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:01:46" (1/1) ... [2023-11-29 06:01:46,364 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:01:46,365 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:01:46,365 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:01:46,365 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:01:46,366 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:01:46" (1/1) ... [2023-11-29 06:01:46,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:01:46,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:01:46,397 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:01:46,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:01:46,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 06:01:46,431 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero [2023-11-29 06:01:46,431 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero [2023-11-29 06:01:46,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 06:01:46,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 06:01:46,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 06:01:46,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 06:01:46,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:01:46,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:01:46,547 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:01:46,549 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:01:46,792 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:01:46,857 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:01:46,857 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 06:01:46,858 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:01:46 BoogieIcfgContainer [2023-11-29 06:01:46,858 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:01:46,861 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:01:46,861 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:01:46,864 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:01:46,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:01:45" (1/3) ... [2023-11-29 06:01:46,865 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4b69d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:01:46, skipping insertion in model container [2023-11-29 06:01:46,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:01:46" (2/3) ... [2023-11-29 06:01:46,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4b69d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:01:46, skipping insertion in model container [2023-11-29 06:01:46,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:01:46" (3/3) ... [2023-11-29 06:01:46,867 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-middle-data.i [2023-11-29 06:01:46,884 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:01:46,884 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-11-29 06:01:46,930 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:01:46,937 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;@6847133c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:01:46,937 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-11-29 06:01:46,941 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 25 states have (on average 2.28) internal successors, (57), 51 states have internal predecessors, (57), 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 06:01:46,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-29 06:01:46,947 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:01:46,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-29 06:01:46,949 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 23 more)] === [2023-11-29 06:01:46,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:46,954 INFO L85 PathProgramCache]: Analyzing trace with hash 4451354, now seen corresponding path program 1 times [2023-11-29 06:01:46,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:46,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070894910] [2023-11-29 06:01:46,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:46,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:47,218 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 06:01:47,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:47,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070894910] [2023-11-29 06:01:47,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070894910] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:01:47,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:01:47,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:01:47,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071923917] [2023-11-29 06:01:47,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:01:47,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:01:47,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:01:47,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:01:47,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:01:47,271 INFO L87 Difference]: Start difference. First operand has 55 states, 25 states have (on average 2.28) internal successors, (57), 51 states have internal predecessors, (57), 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 06:01:47,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:01:47,410 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2023-11-29 06:01:47,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:01:47,414 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 06:01:47,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:01:47,423 INFO L225 Difference]: With dead ends: 54 [2023-11-29 06:01:47,423 INFO L226 Difference]: Without dead ends: 53 [2023-11-29 06:01:47,425 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 06:01:47,429 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 2 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:01:47,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 66 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:01:47,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-11-29 06:01:47,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-11-29 06:01:47,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 25 states have (on average 2.08) internal successors, (52), 49 states have internal predecessors, (52), 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 06:01:47,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2023-11-29 06:01:47,493 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 4 [2023-11-29 06:01:47,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:01:47,494 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2023-11-29 06:01:47,494 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 06:01:47,494 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2023-11-29 06:01:47,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-29 06:01:47,495 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:01:47,495 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-29 06:01:47,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 06:01:47,496 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 23 more)] === [2023-11-29 06:01:47,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:47,498 INFO L85 PathProgramCache]: Analyzing trace with hash 4451355, now seen corresponding path program 1 times [2023-11-29 06:01:47,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:47,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82666763] [2023-11-29 06:01:47,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:47,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:47,608 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 06:01:47,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:47,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82666763] [2023-11-29 06:01:47,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82666763] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:01:47,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:01:47,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:01:47,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124026121] [2023-11-29 06:01:47,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:01:47,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:01:47,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:01:47,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:01:47,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:01:47,613 INFO L87 Difference]: Start difference. First operand 53 states and 56 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 06:01:47,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:01:47,686 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2023-11-29 06:01:47,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:01:47,687 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 06:01:47,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:01:47,688 INFO L225 Difference]: With dead ends: 52 [2023-11-29 06:01:47,689 INFO L226 Difference]: Without dead ends: 52 [2023-11-29 06:01:47,689 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 06:01:47,691 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 1 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:01:47,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 69 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:01:47,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-11-29 06:01:47,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-11-29 06:01:47,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 25 states have (on average 2.04) internal successors, (51), 48 states have internal predecessors, (51), 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 06:01:47,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2023-11-29 06:01:47,702 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 4 [2023-11-29 06:01:47,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:01:47,702 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2023-11-29 06:01:47,702 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 06:01:47,703 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2023-11-29 06:01:47,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 06:01:47,703 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:01:47,704 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:01:47,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 06:01:47,704 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 23 more)] === [2023-11-29 06:01:47,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:47,705 INFO L85 PathProgramCache]: Analyzing trace with hash -530348794, now seen corresponding path program 1 times [2023-11-29 06:01:47,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:47,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902539653] [2023-11-29 06:01:47,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:47,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:47,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:47,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:01:47,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:47,885 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 06:01:47,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:47,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902539653] [2023-11-29 06:01:47,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902539653] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:01:47,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:01:47,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:01:47,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294332244] [2023-11-29 06:01:47,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:01:47,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:01:47,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:01:47,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:01:47,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:01:47,889 INFO L87 Difference]: Start difference. First operand 52 states and 55 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 06:01:48,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:01:48,071 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2023-11-29 06:01:48,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:01:48,071 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 06:01:48,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:01:48,074 INFO L225 Difference]: With dead ends: 51 [2023-11-29 06:01:48,075 INFO L226 Difference]: Without dead ends: 51 [2023-11-29 06:01:48,075 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 06:01:48,077 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 18 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:01:48,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 90 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:01:48,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-29 06:01:48,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2023-11-29 06:01:48,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 25 states have (on average 1.84) internal successors, (46), 43 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 06:01:48,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2023-11-29 06:01:48,087 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 7 [2023-11-29 06:01:48,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:01:48,087 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2023-11-29 06:01:48,087 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 06:01:48,088 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2023-11-29 06:01:48,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 06:01:48,088 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:01:48,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:01:48,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 06:01:48,089 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 23 more)] === [2023-11-29 06:01:48,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:48,090 INFO L85 PathProgramCache]: Analyzing trace with hash -530348793, now seen corresponding path program 1 times [2023-11-29 06:01:48,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:48,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398411052] [2023-11-29 06:01:48,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:48,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:48,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:01:48,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:48,331 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 06:01:48,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:48,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398411052] [2023-11-29 06:01:48,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398411052] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:01:48,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:01:48,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:01:48,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378574826] [2023-11-29 06:01:48,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:01:48,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:01:48,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:01:48,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:01:48,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:01:48,334 INFO L87 Difference]: Start difference. First operand 47 states and 50 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 06:01:48,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:01:48,514 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2023-11-29 06:01:48,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:01:48,515 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 06:01:48,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:01:48,516 INFO L225 Difference]: With dead ends: 49 [2023-11-29 06:01:48,516 INFO L226 Difference]: Without dead ends: 49 [2023-11-29 06:01:48,517 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 06:01:48,518 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 6 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:01:48,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 127 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:01:48,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-29 06:01:48,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2023-11-29 06:01:48,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 25 states have (on average 1.76) internal successors, (44), 41 states have internal predecessors, (44), 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 06:01:48,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2023-11-29 06:01:48,525 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 7 [2023-11-29 06:01:48,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:01:48,525 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2023-11-29 06:01:48,526 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 06:01:48,526 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2023-11-29 06:01:48,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-29 06:01:48,527 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:01:48,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:01:48,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 06:01:48,527 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:01:48,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:48,528 INFO L85 PathProgramCache]: Analyzing trace with hash -928522982, now seen corresponding path program 1 times [2023-11-29 06:01:48,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:48,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401319384] [2023-11-29 06:01:48,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:48,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:48,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:01:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:48,678 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 06:01:48,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:48,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401319384] [2023-11-29 06:01:48,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401319384] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:01:48,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:01:48,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:01:48,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599270579] [2023-11-29 06:01:48,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:01:48,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:01:48,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:01:48,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:01:48,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:01:48,681 INFO L87 Difference]: Start difference. First operand 45 states and 48 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, (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 06:01:48,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:01:48,850 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2023-11-29 06:01:48,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:01:48,850 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, (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 13 [2023-11-29 06:01:48,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:01:48,851 INFO L225 Difference]: With dead ends: 53 [2023-11-29 06:01:48,852 INFO L226 Difference]: Without dead ends: 53 [2023-11-29 06:01:48,852 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 06:01:48,853 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 3 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:01:48,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 116 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:01:48,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-11-29 06:01:48,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2023-11-29 06:01:48,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 46 states have internal predecessors, (52), 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 06:01:48,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2023-11-29 06:01:48,860 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 13 [2023-11-29 06:01:48,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:01:48,861 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2023-11-29 06:01:48,861 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, (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 06:01:48,861 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2023-11-29 06:01:48,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-29 06:01:48,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:01:48,862 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:01:48,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 06:01:48,862 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:01:48,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:48,863 INFO L85 PathProgramCache]: Analyzing trace with hash -928522981, now seen corresponding path program 1 times [2023-11-29 06:01:48,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:48,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736515244] [2023-11-29 06:01:48,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:48,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:49,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:01:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:49,119 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 06:01:49,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:49,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736515244] [2023-11-29 06:01:49,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736515244] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:01:49,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:01:49,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:01:49,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961878051] [2023-11-29 06:01:49,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:01:49,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:01:49,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:01:49,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:01:49,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:01:49,122 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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 06:01:49,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:01:49,303 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2023-11-29 06:01:49,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:01:49,304 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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 13 [2023-11-29 06:01:49,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:01:49,306 INFO L225 Difference]: With dead ends: 52 [2023-11-29 06:01:49,306 INFO L226 Difference]: Without dead ends: 52 [2023-11-29 06:01:49,306 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 06:01:49,307 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 3 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:01:49,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 140 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:01:49,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-11-29 06:01:49,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2023-11-29 06:01:49,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 30 states have (on average 1.7) internal successors, (51), 46 states have internal predecessors, (51), 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 06:01:49,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2023-11-29 06:01:49,314 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 13 [2023-11-29 06:01:49,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:01:49,314 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2023-11-29 06:01:49,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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 06:01:49,315 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2023-11-29 06:01:49,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 06:01:49,316 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:01:49,316 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:01:49,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 06:01:49,316 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:01:49,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:49,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1092820800, now seen corresponding path program 1 times [2023-11-29 06:01:49,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:49,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589655591] [2023-11-29 06:01:49,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:49,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:49,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:49,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:01:49,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:49,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 06:01:49,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:49,782 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 06:01:49,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:49,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589655591] [2023-11-29 06:01:49,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589655591] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:01:49,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081506233] [2023-11-29 06:01:49,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:49,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:01:49,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:01:49,786 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:01:49,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:01:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:49,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 06:01:49,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:01:49,971 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 06:01:50,170 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 06:01:50,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:01:50,200 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 06:01:50,215 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 06:01:50,216 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 06:01:50,245 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 06:01:50,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:01:50,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081506233] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:01:50,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:01:50,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-11-29 06:01:50,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842042946] [2023-11-29 06:01:50,412 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:01:50,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 06:01:50,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:01:50,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 06:01:50,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=322, Unknown=1, NotChecked=36, Total=420 [2023-11-29 06:01:50,414 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 19 states, 15 states have (on average 1.4) internal successors, (21), 13 states have internal predecessors, (21), 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 06:01:50,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:01:50,840 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2023-11-29 06:01:50,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:01:50,841 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 1.4) internal successors, (21), 13 states have internal predecessors, (21), 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 15 [2023-11-29 06:01:50,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:01:50,842 INFO L225 Difference]: With dead ends: 62 [2023-11-29 06:01:50,842 INFO L226 Difference]: Without dead ends: 62 [2023-11-29 06:01:50,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=389, Unknown=1, NotChecked=40, Total=506 [2023-11-29 06:01:50,844 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 24 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:01:50,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 225 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 408 Invalid, 0 Unknown, 63 Unchecked, 0.3s Time] [2023-11-29 06:01:50,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-29 06:01:50,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 57. [2023-11-29 06:01:50,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 36 states have (on average 1.7222222222222223) internal successors, (62), 52 states have internal predecessors, (62), 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 06:01:50,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2023-11-29 06:01:50,850 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 15 [2023-11-29 06:01:50,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:01:50,850 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2023-11-29 06:01:50,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 1.4) internal successors, (21), 13 states have internal predecessors, (21), 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 06:01:50,851 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2023-11-29 06:01:50,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 06:01:50,851 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:01:50,851 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:01:50,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:01:51,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:01:51,052 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:01:51,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:51,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1092820799, now seen corresponding path program 1 times [2023-11-29 06:01:51,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:51,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625868071] [2023-11-29 06:01:51,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:51,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:51,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:01:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:51,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 06:01:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:51,280 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 06:01:51,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:51,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625868071] [2023-11-29 06:01:51,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625868071] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:01:51,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126377609] [2023-11-29 06:01:51,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:51,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:01:51,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:01:51,283 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:01:51,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:01:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:51,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 06:01:51,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:01:51,397 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 06:01:51,457 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 06:01:51,486 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-29 06:01:51,487 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 06:01:51,490 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 06:01:51,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:01:51,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126377609] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:01:51,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:01:51,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-11-29 06:01:51,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596193250] [2023-11-29 06:01:51,546 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:01:51,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 06:01:51,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:01:51,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 06:01:51,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=87, Unknown=1, NotChecked=18, Total=132 [2023-11-29 06:01:51,547 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand has 11 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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 06:01:51,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:01:51,759 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2023-11-29 06:01:51,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:01:51,759 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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 15 [2023-11-29 06:01:51,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:01:51,760 INFO L225 Difference]: With dead ends: 57 [2023-11-29 06:01:51,760 INFO L226 Difference]: Without dead ends: 57 [2023-11-29 06:01:51,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=121, Unknown=1, NotChecked=22, Total=182 [2023-11-29 06:01:51,761 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 15 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:01:51,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 129 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 186 Invalid, 0 Unknown, 53 Unchecked, 0.2s Time] [2023-11-29 06:01:51,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-29 06:01:51,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-11-29 06:01:51,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 36 states have (on average 1.6944444444444444) internal successors, (61), 52 states have internal predecessors, (61), 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 06:01:51,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2023-11-29 06:01:51,767 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 15 [2023-11-29 06:01:51,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:01:51,768 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2023-11-29 06:01:51,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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 06:01:51,768 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2023-11-29 06:01:51,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 06:01:51,769 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:01:51,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:01:51,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 06:01:51,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:01:51,980 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:01:51,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:51,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1041190450, now seen corresponding path program 1 times [2023-11-29 06:01:51,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:51,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517800610] [2023-11-29 06:01:51,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:51,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:51,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:52,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:01:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:52,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:01:52,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:52,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517800610] [2023-11-29 06:01:52,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517800610] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:01:52,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:01:52,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 06:01:52,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81038620] [2023-11-29 06:01:52,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:01:52,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:01:52,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:01:52,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:01:52,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:01:52,100 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 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 06:01:52,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:01:52,203 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2023-11-29 06:01:52,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:01:52,204 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 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 15 [2023-11-29 06:01:52,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:01:52,205 INFO L225 Difference]: With dead ends: 61 [2023-11-29 06:01:52,205 INFO L226 Difference]: Without dead ends: 61 [2023-11-29 06:01:52,205 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 06:01:52,206 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 20 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:01:52,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 188 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:01:52,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-29 06:01:52,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2023-11-29 06:01:52,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 37 states have (on average 1.6486486486486487) internal successors, (61), 53 states have internal predecessors, (61), 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 06:01:52,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2023-11-29 06:01:52,211 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 15 [2023-11-29 06:01:52,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:01:52,212 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2023-11-29 06:01:52,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 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 06:01:52,212 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2023-11-29 06:01:52,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 06:01:52,213 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:01:52,213 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:01:52,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 06:01:52,213 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:01:52,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:52,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1042665444, now seen corresponding path program 1 times [2023-11-29 06:01:52,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:52,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943312579] [2023-11-29 06:01:52,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:52,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:52,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:01:52,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:52,662 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 06:01:52,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:52,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943312579] [2023-11-29 06:01:52,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943312579] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:01:52,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186373464] [2023-11-29 06:01:52,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:52,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:01:52,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:01:52,664 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:01:52,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:01:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:52,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-29 06:01:52,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:01:52,782 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 06:01:52,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 06:01:52,848 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 06:01:52,859 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 06:01:52,878 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 06:01:52,885 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 06:01:52,944 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 06:01:52,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:01:53,061 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_create_~sll~0#1.offset| 4)) (.cse0 (+ 12 |c_ULTIMATE.start_create_~now~0#1.offset|))) (and (forall ((v_ArrVal_331 (Array Int Int))) (or (not (= v_ArrVal_331 (store (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) .cse0 (select v_ArrVal_331 .cse0)))) (= (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base| v_ArrVal_331) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1) 0))) (forall ((v_ArrVal_330 (Array Int Int))) (or (= (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~0#1.base| v_ArrVal_330) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1) 0) (not (= v_ArrVal_330 (store (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~0#1.base|) .cse0 (select v_ArrVal_330 .cse0)))))))) is different from false [2023-11-29 06:01:53,503 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 22 treesize of output 20 [2023-11-29 06:01:53,506 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 06:01:53,515 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 22 treesize of output 20 [2023-11-29 06:01:53,519 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 06:01:53,519 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 06:01:53,538 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 06:01:53,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186373464] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:01:53,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:01:53,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2023-11-29 06:01:53,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384135039] [2023-11-29 06:01:53,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:01:53,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 06:01:53,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:01:53,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 06:01:53,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=230, Unknown=1, NotChecked=30, Total=306 [2023-11-29 06:01:53,541 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand has 18 states, 16 states have (on average 1.625) internal successors, (26), 15 states have internal predecessors, (26), 1 states have call successors, (2), 2 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 06:01:53,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:01:53,813 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2023-11-29 06:01:53,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:01:53,814 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 1.625) internal successors, (26), 15 states have internal predecessors, (26), 1 states have call successors, (2), 2 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 15 [2023-11-29 06:01:53,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:01:53,814 INFO L225 Difference]: With dead ends: 59 [2023-11-29 06:01:53,815 INFO L226 Difference]: Without dead ends: 59 [2023-11-29 06:01:53,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=258, Unknown=1, NotChecked=32, Total=342 [2023-11-29 06:01:53,816 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:01:53,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 308 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 225 Invalid, 0 Unknown, 32 Unchecked, 0.2s Time] [2023-11-29 06:01:53,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-29 06:01:53,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-11-29 06:01:53,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 38 states have (on average 1.631578947368421) internal successors, (62), 54 states have internal predecessors, (62), 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 06:01:53,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2023-11-29 06:01:53,822 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 15 [2023-11-29 06:01:53,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:01:53,823 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2023-11-29 06:01:53,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 1.625) internal successors, (26), 15 states have internal predecessors, (26), 1 states have call successors, (2), 2 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 06:01:53,823 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2023-11-29 06:01:53,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 06:01:53,824 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:01:53,824 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:01:53,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 06:01:54,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 06:01:54,027 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:01:54,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:54,028 INFO L85 PathProgramCache]: Analyzing trace with hash -2066117182, now seen corresponding path program 1 times [2023-11-29 06:01:54,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:54,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899166941] [2023-11-29 06:01:54,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:54,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:54,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:01:54,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:54,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 06:01:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:54,193 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 06:01:54,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:54,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899166941] [2023-11-29 06:01:54,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899166941] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:01:54,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:01:54,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:01:54,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126849628] [2023-11-29 06:01:54,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:01:54,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:01:54,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:01:54,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:01:54,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:01:54,195 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 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 06:01:54,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:01:54,323 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2023-11-29 06:01:54,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:01:54,323 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 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 17 [2023-11-29 06:01:54,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:01:54,324 INFO L225 Difference]: With dead ends: 58 [2023-11-29 06:01:54,324 INFO L226 Difference]: Without dead ends: 58 [2023-11-29 06:01:54,324 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 06:01:54,325 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:01:54,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 121 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:01:54,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-11-29 06:01:54,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2023-11-29 06:01:54,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 38 states have (on average 1.5789473684210527) internal successors, (60), 53 states have internal predecessors, (60), 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 06:01:54,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2023-11-29 06:01:54,330 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 17 [2023-11-29 06:01:54,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:01:54,330 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2023-11-29 06:01:54,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 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 06:01:54,330 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2023-11-29 06:01:54,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 06:01:54,331 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:01:54,331 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:01:54,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 06:01:54,332 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:01:54,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:54,332 INFO L85 PathProgramCache]: Analyzing trace with hash -2066117181, now seen corresponding path program 1 times [2023-11-29 06:01:54,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:54,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884646117] [2023-11-29 06:01:54,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:54,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:54,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:01:54,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:54,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 06:01:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:54,601 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 06:01:54,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:54,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884646117] [2023-11-29 06:01:54,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884646117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:01:54,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:01:54,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:01:54,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767142178] [2023-11-29 06:01:54,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:01:54,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:01:54,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:01:54,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:01:54,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:01:54,604 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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 06:01:54,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:01:54,756 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2023-11-29 06:01:54,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:01:54,756 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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 17 [2023-11-29 06:01:54,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:01:54,757 INFO L225 Difference]: With dead ends: 57 [2023-11-29 06:01:54,757 INFO L226 Difference]: Without dead ends: 57 [2023-11-29 06:01:54,757 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 06:01:54,758 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 5 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:01:54,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 149 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:01:54,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-29 06:01:54,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-11-29 06:01:54,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.5263157894736843) internal successors, (58), 52 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 06:01:54,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2023-11-29 06:01:54,763 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 17 [2023-11-29 06:01:54,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:01:54,764 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2023-11-29 06:01:54,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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 06:01:54,764 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2023-11-29 06:01:54,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 06:01:54,765 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:01:54,765 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 06:01:54,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 06:01:54,765 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:01:54,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:54,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1272690300, now seen corresponding path program 1 times [2023-11-29 06:01:54,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:54,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346823755] [2023-11-29 06:01:54,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:54,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:54,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:01:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:54,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:01:54,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:54,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346823755] [2023-11-29 06:01:54,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346823755] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:01:54,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919460160] [2023-11-29 06:01:54,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:54,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:01:54,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:01:54,844 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:01:54,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:01:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:54,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 06:01:54,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:01:55,010 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 06:01:55,010 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:01:55,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919460160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:01:55,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:01:55,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-29 06:01:55,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420971973] [2023-11-29 06:01:55,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:01:55,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:01:55,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:01:55,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:01:55,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:01:55,022 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 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 06:01:55,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:01:55,169 INFO L93 Difference]: Finished difference Result 79 states and 87 transitions. [2023-11-29 06:01:55,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:01:55,170 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 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 06:01:55,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:01:55,171 INFO L225 Difference]: With dead ends: 79 [2023-11-29 06:01:55,171 INFO L226 Difference]: Without dead ends: 79 [2023-11-29 06:01:55,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 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 06:01:55,173 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 45 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:01:55,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 85 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:01:55,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-29 06:01:55,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 65. [2023-11-29 06:01:55,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 47 states have (on average 1.5319148936170213) internal successors, (72), 60 states have internal predecessors, (72), 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 06:01:55,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2023-11-29 06:01:55,179 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 17 [2023-11-29 06:01:55,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:01:55,179 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2023-11-29 06:01:55,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 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 06:01:55,180 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2023-11-29 06:01:55,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 06:01:55,180 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:01:55,181 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 06:01:55,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 06:01:55,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 06:01:55,387 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:01:55,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:55,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1272690301, now seen corresponding path program 1 times [2023-11-29 06:01:55,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:55,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576061963] [2023-11-29 06:01:55,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:55,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:55,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:01:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:55,613 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 06:01:55,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:55,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576061963] [2023-11-29 06:01:55,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576061963] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:01:55,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:01:55,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 06:01:55,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046784095] [2023-11-29 06:01:55,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:01:55,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:01:55,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:01:55,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:01:55,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:01:55,615 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand has 9 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 06:01:55,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:01:55,844 INFO L93 Difference]: Finished difference Result 85 states and 99 transitions. [2023-11-29 06:01:55,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:01:55,844 INFO L78 Accepts]: Start accepts. Automaton has has 9 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 06:01:55,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:01:55,845 INFO L225 Difference]: With dead ends: 85 [2023-11-29 06:01:55,845 INFO L226 Difference]: Without dead ends: 85 [2023-11-29 06:01:55,846 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 06:01:55,846 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 28 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:01:55,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 102 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:01:55,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-11-29 06:01:55,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 69. [2023-11-29 06:01:55,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 51 states have (on average 1.5098039215686274) 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 06:01:55,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 83 transitions. [2023-11-29 06:01:55,852 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 83 transitions. Word has length 17 [2023-11-29 06:01:55,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:01:55,852 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 83 transitions. [2023-11-29 06:01:55,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 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 06:01:55,853 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 83 transitions. [2023-11-29 06:01:55,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 06:01:55,854 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:01:55,854 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 06:01:55,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 06:01:55,854 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:01:55,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:55,855 INFO L85 PathProgramCache]: Analyzing trace with hash 798692189, now seen corresponding path program 1 times [2023-11-29 06:01:55,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:55,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32860362] [2023-11-29 06:01:55,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:55,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:55,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:01:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:55,962 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 06:01:55,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:55,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32860362] [2023-11-29 06:01:55,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32860362] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:01:55,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:01:55,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 06:01:55,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964888929] [2023-11-29 06:01:55,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:01:55,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:01:55,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:01:55,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:01:55,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:01:55,965 INFO L87 Difference]: Start difference. First operand 69 states and 83 transitions. Second operand has 9 states, 8 states have (on average 2.0) 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 06:01:56,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:01:56,107 INFO L93 Difference]: Finished difference Result 78 states and 90 transitions. [2023-11-29 06:01:56,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:01:56,108 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) 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 06:01:56,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:01:56,109 INFO L225 Difference]: With dead ends: 78 [2023-11-29 06:01:56,109 INFO L226 Difference]: Without dead ends: 78 [2023-11-29 06:01:56,109 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 06:01:56,110 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 44 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:01:56,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 158 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:01:56,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-11-29 06:01:56,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 70. [2023-11-29 06:01:56,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 52 states have (on average 1.4615384615384615) internal successors, (76), 65 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 06:01:56,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 82 transitions. [2023-11-29 06:01:56,115 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 82 transitions. Word has length 18 [2023-11-29 06:01:56,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:01:56,115 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 82 transitions. [2023-11-29 06:01:56,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) 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 06:01:56,115 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 82 transitions. [2023-11-29 06:01:56,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 06:01:56,116 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:01:56,116 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:01:56,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 06:01:56,117 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:01:56,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:56,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1263640471, now seen corresponding path program 1 times [2023-11-29 06:01:56,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:56,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555984635] [2023-11-29 06:01:56,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:56,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:56,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:01:56,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:56,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 06:01:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:56,555 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 06:01:56,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:56,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555984635] [2023-11-29 06:01:56,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555984635] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:01:56,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978464980] [2023-11-29 06:01:56,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:56,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:01:56,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:01:56,557 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:01:56,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:01:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:56,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-29 06:01:56,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:01:56,707 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 06:01:56,769 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 06:01:56,770 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 06:01:56,808 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 06:01:56,813 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 06:01:56,888 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:01:56,889 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 06:01:56,896 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 06:01:56,921 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 06:01:56,927 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 06:01:56,947 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:01:56,948 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:01:56,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978464980] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:01:56,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:01:56,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 19 [2023-11-29 06:01:56,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513871473] [2023-11-29 06:01:56,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:01:56,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:01:56,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:01:56,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:01:56,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2023-11-29 06:01:56,950 INFO L87 Difference]: Start difference. First operand 70 states and 82 transitions. Second operand has 10 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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 06:01:57,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:01:57,247 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2023-11-29 06:01:57,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 06:01:57,247 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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 19 [2023-11-29 06:01:57,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:01:57,248 INFO L225 Difference]: With dead ends: 71 [2023-11-29 06:01:57,248 INFO L226 Difference]: Without dead ends: 71 [2023-11-29 06:01:57,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2023-11-29 06:01:57,250 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 19 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:01:57,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 169 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:01:57,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-11-29 06:01:57,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2023-11-29 06:01:57,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 52 states have (on average 1.4423076923076923) internal successors, (75), 65 states have internal predecessors, (75), 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 06:01:57,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 81 transitions. [2023-11-29 06:01:57,255 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 81 transitions. Word has length 19 [2023-11-29 06:01:57,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:01:57,256 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 81 transitions. [2023-11-29 06:01:57,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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 06:01:57,256 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 81 transitions. [2023-11-29 06:01:57,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 06:01:57,257 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:01:57,257 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:01:57,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 06:01:57,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 06:01:57,463 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 23 more)] === [2023-11-29 06:01:57,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:57,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1263640472, now seen corresponding path program 1 times [2023-11-29 06:01:57,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:57,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949675228] [2023-11-29 06:01:57,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:57,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:57,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:57,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:01:57,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:57,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 06:01:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:57,832 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 06:01:57,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:57,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949675228] [2023-11-29 06:01:57,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949675228] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:01:57,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:01:57,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 06:01:57,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122376035] [2023-11-29 06:01:57,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:01:57,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 06:01:57,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:01:57,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 06:01:57,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:01:57,835 INFO L87 Difference]: Start difference. First operand 70 states and 81 transitions. Second operand has 13 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 2 states have call successors, (2), 1 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 06:01:58,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:01:58,092 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2023-11-29 06:01:58,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 06:01:58,093 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 2 states have call successors, (2), 1 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 19 [2023-11-29 06:01:58,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:01:58,094 INFO L225 Difference]: With dead ends: 70 [2023-11-29 06:01:58,094 INFO L226 Difference]: Without dead ends: 70 [2023-11-29 06:01:58,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:01:58,095 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 17 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:01:58,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 187 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:01:58,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-11-29 06:01:58,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2023-11-29 06:01:58,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 52 states have (on average 1.4230769230769231) internal successors, (74), 65 states have internal predecessors, (74), 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 06:01:58,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 80 transitions. [2023-11-29 06:01:58,100 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 80 transitions. Word has length 19 [2023-11-29 06:01:58,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:01:58,100 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 80 transitions. [2023-11-29 06:01:58,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 2 states have call successors, (2), 1 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 06:01:58,100 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 80 transitions. [2023-11-29 06:01:58,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 06:01:58,101 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:01:58,101 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:01:58,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 06:01:58,102 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:01:58,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:58,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1010272136, now seen corresponding path program 1 times [2023-11-29 06:01:58,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:58,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851964433] [2023-11-29 06:01:58,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:58,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:58,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:58,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:01:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:58,270 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 06:01:58,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:58,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851964433] [2023-11-29 06:01:58,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851964433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:01:58,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:01:58,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 06:01:58,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603758883] [2023-11-29 06:01:58,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:01:58,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:01:58,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:01:58,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:01:58,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:01:58,272 INFO L87 Difference]: Start difference. First operand 70 states and 80 transitions. Second operand has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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 06:01:58,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:01:58,450 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2023-11-29 06:01:58,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:01:58,450 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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 19 [2023-11-29 06:01:58,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:01:58,451 INFO L225 Difference]: With dead ends: 76 [2023-11-29 06:01:58,451 INFO L226 Difference]: Without dead ends: 76 [2023-11-29 06:01:58,452 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 06:01:58,452 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 38 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:01:58,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 140 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:01:58,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-29 06:01:58,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2023-11-29 06:01:58,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 55 states have (on average 1.4545454545454546) internal successors, (80), 68 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 06:01:58,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 86 transitions. [2023-11-29 06:01:58,457 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 86 transitions. Word has length 19 [2023-11-29 06:01:58,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:01:58,458 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 86 transitions. [2023-11-29 06:01:58,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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 06:01:58,458 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 86 transitions. [2023-11-29 06:01:58,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-29 06:01:58,459 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:01:58,459 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, 1] [2023-11-29 06:01:58,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 06:01:58,460 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:01:58,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:58,460 INFO L85 PathProgramCache]: Analyzing trace with hash 2113732586, now seen corresponding path program 1 times [2023-11-29 06:01:58,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:58,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450133846] [2023-11-29 06:01:58,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:58,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:58,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:58,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:01:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:58,899 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 06:01:58,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:58,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450133846] [2023-11-29 06:01:58,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450133846] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:01:58,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14484940] [2023-11-29 06:01:58,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:58,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:01:58,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:01:58,901 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:01:58,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 06:01:59,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:59,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-29 06:01:59,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:01:59,051 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 06:01:59,055 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 06:01:59,169 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 06:01:59,177 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 06:01:59,215 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 06:01:59,221 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 06:01:59,362 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:01:59,362 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 06:01:59,369 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:01:59,369 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 06:01:59,424 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 06:01:59,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:01:59,553 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (+ 12 |c_ULTIMATE.start_create_~now~0#1.offset|))) (and (forall ((v_ArrVal_784 (Array Int Int))) (or (= (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base| v_ArrVal_784) |c_ULTIMATE.start_create_~sll~0#1.base|) 4) 0) (not (= v_ArrVal_784 (store (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) .cse0 (select v_ArrVal_784 .cse0)))))) (forall ((v_ArrVal_783 (Array Int Int))) (or (= (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~0#1.base| v_ArrVal_783) |c_ULTIMATE.start_create_~sll~0#1.base|) 4) 0) (not (= (store (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~0#1.base|) .cse0 (select v_ArrVal_783 .cse0)) v_ArrVal_783)))))) is different from false [2023-11-29 06:02:00,034 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 55 treesize of output 53 [2023-11-29 06:02:00,038 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 53 treesize of output 51 [2023-11-29 06:02:00,044 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 458 treesize of output 450 [2023-11-29 06:02:00,056 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 155 treesize of output 153 [2023-11-29 06:02:00,130 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 06:02:00,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14484940] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:02:00,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:02:00,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 27 [2023-11-29 06:02:00,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389368327] [2023-11-29 06:02:00,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:02:00,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 06:02:00,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:02:00,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 06:02:00,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=589, Unknown=1, NotChecked=48, Total=702 [2023-11-29 06:02:00,135 INFO L87 Difference]: Start difference. First operand 73 states and 86 transitions. Second operand has 27 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 states have internal predecessors, (40), 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 06:02:00,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:02:00,857 INFO L93 Difference]: Finished difference Result 98 states and 117 transitions. [2023-11-29 06:02:00,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 06:02:00,858 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 states have internal predecessors, (40), 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 22 [2023-11-29 06:02:00,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:02:00,859 INFO L225 Difference]: With dead ends: 98 [2023-11-29 06:02:00,859 INFO L226 Difference]: Without dead ends: 98 [2023-11-29 06:02:00,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=114, Invalid=1011, Unknown=1, NotChecked=64, Total=1190 [2023-11-29 06:02:00,861 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 51 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:02:00,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 335 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 630 Invalid, 0 Unknown, 57 Unchecked, 0.5s Time] [2023-11-29 06:02:00,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-11-29 06:02:00,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 86. [2023-11-29 06:02:00,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 68 states have (on average 1.5) internal successors, (102), 81 states have internal predecessors, (102), 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 06:02:00,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 108 transitions. [2023-11-29 06:02:00,866 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 108 transitions. Word has length 22 [2023-11-29 06:02:00,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:02:00,866 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 108 transitions. [2023-11-29 06:02:00,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 states have internal predecessors, (40), 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 06:02:00,867 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 108 transitions. [2023-11-29 06:02:00,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 06:02:00,868 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:02:00,868 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, 1] [2023-11-29 06:02:00,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 06:02:01,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:02:01,075 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:02:01,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:02:01,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1101199279, now seen corresponding path program 1 times [2023-11-29 06:02:01,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:02:01,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413420313] [2023-11-29 06:02:01,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:02:01,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:02:01,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:01,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:02:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:01,255 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 06:02:01,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:02:01,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413420313] [2023-11-29 06:02:01,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413420313] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:02:01,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841635122] [2023-11-29 06:02:01,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:02:01,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:02:01,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:02:01,257 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:02:01,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 06:02:01,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:01,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 06:02:01,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:02:01,454 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 06:02:01,483 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 06:02:01,483 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:02:01,545 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_create_#t~ret4#1.base_25| Int)) (or (= (store |c_#valid| |v_ULTIMATE.start_create_#t~ret4#1.base_25| 0) |c_ULTIMATE.start_main_old_#valid#1|) (not (= (select |c_#valid| |v_ULTIMATE.start_create_#t~ret4#1.base_25|) 0)))) is different from false [2023-11-29 06:02:01,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841635122] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:02:01,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:02:01,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 10 [2023-11-29 06:02:01,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239847780] [2023-11-29 06:02:01,547 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:02:01,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:02:01,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:02:01,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:02:01,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=110, Unknown=1, NotChecked=20, Total=156 [2023-11-29 06:02:01,549 INFO L87 Difference]: Start difference. First operand 86 states and 108 transitions. Second operand has 12 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 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 06:02:01,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:02:01,763 INFO L93 Difference]: Finished difference Result 92 states and 113 transitions. [2023-11-29 06:02:01,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 06:02:01,764 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 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 23 [2023-11-29 06:02:01,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:02:01,765 INFO L225 Difference]: With dead ends: 92 [2023-11-29 06:02:01,765 INFO L226 Difference]: Without dead ends: 79 [2023-11-29 06:02:01,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 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 06:02:01,766 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 9 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:02:01,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 149 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:02:01,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-29 06:02:01,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2023-11-29 06:02:01,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 61 states have (on average 1.540983606557377) internal successors, (94), 74 states have internal predecessors, (94), 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 06:02:01,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 100 transitions. [2023-11-29 06:02:01,771 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 100 transitions. Word has length 23 [2023-11-29 06:02:01,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:02:01,771 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 100 transitions. [2023-11-29 06:02:01,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 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 06:02:01,773 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 100 transitions. [2023-11-29 06:02:01,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 06:02:01,773 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:02:01,774 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:02:01,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 06:02:01,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:02:01,974 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:02:01,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:02:01,975 INFO L85 PathProgramCache]: Analyzing trace with hash 604058841, now seen corresponding path program 1 times [2023-11-29 06:02:01,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:02:01,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332740371] [2023-11-29 06:02:01,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:02:01,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:02:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:02,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:02:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:02,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 06:02:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:02,113 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 06:02:02,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:02:02,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332740371] [2023-11-29 06:02:02,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332740371] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:02:02,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207675197] [2023-11-29 06:02:02,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:02:02,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:02:02,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:02:02,115 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:02:02,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 06:02:02,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:02,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 06:02:02,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:02:02,306 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 06:02:02,306 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:02:02,328 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-29 06:02:02,329 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 06:02:02,347 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 06:02:02,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207675197] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:02:02,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:02:02,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 6 [2023-11-29 06:02:02,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988762697] [2023-11-29 06:02:02,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:02:02,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:02:02,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:02:02,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:02:02,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:02:02,349 INFO L87 Difference]: Start difference. First operand 79 states and 100 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 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 06:02:02,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:02:02,456 INFO L93 Difference]: Finished difference Result 81 states and 101 transitions. [2023-11-29 06:02:02,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:02:02,456 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 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 25 [2023-11-29 06:02:02,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:02:02,457 INFO L225 Difference]: With dead ends: 81 [2023-11-29 06:02:02,457 INFO L226 Difference]: Without dead ends: 81 [2023-11-29 06:02:02,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 52 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 06:02:02,458 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 7 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:02:02,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 106 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:02:02,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-11-29 06:02:02,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2023-11-29 06:02:02,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 61 states have (on average 1.5245901639344261) internal successors, (93), 74 states have internal predecessors, (93), 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 06:02:02,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 99 transitions. [2023-11-29 06:02:02,463 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 99 transitions. Word has length 25 [2023-11-29 06:02:02,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:02:02,464 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 99 transitions. [2023-11-29 06:02:02,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 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 06:02:02,464 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 99 transitions. [2023-11-29 06:02:02,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 06:02:02,465 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:02:02,465 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:02:02,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 06:02:02,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:02:02,667 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:02:02,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:02:02,667 INFO L85 PathProgramCache]: Analyzing trace with hash 604058842, now seen corresponding path program 1 times [2023-11-29 06:02:02,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:02:02,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627271772] [2023-11-29 06:02:02,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:02:02,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:02:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:02,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:02:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:02,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 06:02:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:02,957 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 06:02:02,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:02:02,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627271772] [2023-11-29 06:02:02,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627271772] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:02:02,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18501961] [2023-11-29 06:02:02,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:02:02,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:02:02,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:02:02,959 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:02:02,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 06:02:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:03,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-29 06:02:03,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:02:03,261 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 06:02:03,261 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:02:03,374 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:02:03,375 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 06:02:03,560 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 06:02:03,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18501961] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:02:03,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:02:03,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2023-11-29 06:02:03,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40878711] [2023-11-29 06:02:03,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:02:03,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 06:02:03,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:02:03,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 06:02:03,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2023-11-29 06:02:03,563 INFO L87 Difference]: Start difference. First operand 79 states and 99 transitions. Second operand has 19 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 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 06:02:03,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:02:03,755 INFO L93 Difference]: Finished difference Result 80 states and 100 transitions. [2023-11-29 06:02:03,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 06:02:03,755 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 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 25 [2023-11-29 06:02:03,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:02:03,756 INFO L225 Difference]: With dead ends: 80 [2023-11-29 06:02:03,756 INFO L226 Difference]: Without dead ends: 80 [2023-11-29 06:02:03,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 42 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 06:02:03,758 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 5 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:02:03,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 312 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:02:03,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-29 06:02:03,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2023-11-29 06:02:03,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 61 states have (on average 1.5081967213114753) internal successors, (92), 74 states have internal predecessors, (92), 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 06:02:03,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 98 transitions. [2023-11-29 06:02:03,763 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 98 transitions. Word has length 25 [2023-11-29 06:02:03,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:02:03,763 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 98 transitions. [2023-11-29 06:02:03,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 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 06:02:03,763 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 98 transitions. [2023-11-29 06:02:03,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 06:02:03,764 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:02:03,764 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:02:03,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 06:02:03,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:02:03,967 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:02:03,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:02:03,967 INFO L85 PathProgramCache]: Analyzing trace with hash 730170175, now seen corresponding path program 1 times [2023-11-29 06:02:03,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:02:03,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384104388] [2023-11-29 06:02:03,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:02:03,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:02:03,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:04,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:02:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:04,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 06:02:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:04,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 06:02:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:04,763 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 06:02:04,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:02:04,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384104388] [2023-11-29 06:02:04,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384104388] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:02:04,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772836792] [2023-11-29 06:02:04,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:02:04,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:02:04,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:02:04,765 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:02:04,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 06:02:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:04,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 56 conjunts are in the unsatisfiable core [2023-11-29 06:02:04,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:02:04,907 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 06:02:04,970 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 06:02:05,052 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-29 06:02:05,052 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 06:02:05,111 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 06:02:05,122 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 06:02:05,267 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:02:05,267 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 73 treesize of output 66 [2023-11-29 06:02:05,274 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 06:02:05,411 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:02:05,412 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 73 treesize of output 66 [2023-11-29 06:02:05,421 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 06:02:05,442 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 42 treesize of output 18 [2023-11-29 06:02:05,449 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 06:02:05,575 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 06:02:05,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:02:05,595 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 06:02:05,610 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-11-29 06:02:05,611 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 06:02:05,614 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 06:02:05,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:02:05,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772836792] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:02:05,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:02:05,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 28 [2023-11-29 06:02:05,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308704633] [2023-11-29 06:02:05,746 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:02:05,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 06:02:05,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:02:05,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 06:02:05,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=777, Unknown=1, NotChecked=56, Total=930 [2023-11-29 06:02:05,747 INFO L87 Difference]: Start difference. First operand 79 states and 98 transitions. Second operand has 29 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 22 states have internal predecessors, (35), 4 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-29 06:02:06,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:02:06,399 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2023-11-29 06:02:06,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 06:02:06,399 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 22 states have internal predecessors, (35), 4 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 27 [2023-11-29 06:02:06,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:02:06,400 INFO L225 Difference]: With dead ends: 73 [2023-11-29 06:02:06,400 INFO L226 Difference]: Without dead ends: 73 [2023-11-29 06:02:06,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=182, Invalid=1227, Unknown=1, NotChecked=72, Total=1482 [2023-11-29 06:02:06,401 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 22 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:02:06,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 315 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 568 Invalid, 0 Unknown, 47 Unchecked, 0.4s Time] [2023-11-29 06:02:06,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-29 06:02:06,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-11-29 06:02:06,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 61 states have (on average 1.4098360655737705) internal successors, (86), 68 states have internal predecessors, (86), 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 06:02:06,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 92 transitions. [2023-11-29 06:02:06,405 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 92 transitions. Word has length 27 [2023-11-29 06:02:06,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:02:06,406 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 92 transitions. [2023-11-29 06:02:06,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 22 states have internal predecessors, (35), 4 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-29 06:02:06,406 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 92 transitions. [2023-11-29 06:02:06,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 06:02:06,407 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:02:06,407 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, 1, 1, 1] [2023-11-29 06:02:06,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 06:02:06,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:02:06,608 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:02:06,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:02:06,608 INFO L85 PathProgramCache]: Analyzing trace with hash 680014819, now seen corresponding path program 1 times [2023-11-29 06:02:06,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:02:06,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247666461] [2023-11-29 06:02:06,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:02:06,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:02:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:07,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:02:07,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:07,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 06:02:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:07,384 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 06:02:07,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:02:07,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247666461] [2023-11-29 06:02:07,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247666461] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:02:07,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159595221] [2023-11-29 06:02:07,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:02:07,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:02:07,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:02:07,386 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:02:07,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 06:02:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:07,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-29 06:02:07,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:02:07,562 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 06:02:07,738 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 06:02:07,738 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 06:02:07,776 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 06:02:07,870 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:02:07,871 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 31 treesize of output 32 [2023-11-29 06:02:07,925 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:02:07,925 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 06:02:08,011 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 06:02:08,015 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 06:02:08,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:02:08,101 INFO L349 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2023-11-29 06:02:08,102 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 20 [2023-11-29 06:02:08,242 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1318 (Array Int Int)) (v_ArrVal_1317 (Array Int Int))) (let ((.cse1 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_1317))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_create_~now~0#1.base|) (+ |c_ULTIMATE.start_create_~now~0#1.offset| 4)))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_1318) |c_ULTIMATE.start_create_~sll~0#1.base|) (+ |c_ULTIMATE.start_create_~sll~0#1.offset| 4)))))) is different from false [2023-11-29 06:02:08,350 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:02:08,350 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 63 treesize of output 44 [2023-11-29 06:02:08,362 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:02:08,362 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 272 treesize of output 217 [2023-11-29 06:02:08,378 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 132 treesize of output 120 [2023-11-29 06:02:08,389 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:02:08,390 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 120 treesize of output 92 [2023-11-29 06:02:08,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159595221] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:02:08,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:02:08,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 28 [2023-11-29 06:02:08,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074360309] [2023-11-29 06:02:08,605 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:02:08,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 06:02:08,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:02:08,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 06:02:08,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1050, Unknown=36, NotChecked=66, Total=1260 [2023-11-29 06:02:08,609 INFO L87 Difference]: Start difference. First operand 73 states and 92 transitions. Second operand has 29 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 23 states have internal predecessors, (43), 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 06:02:09,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:02:09,156 INFO L93 Difference]: Finished difference Result 76 states and 96 transitions. [2023-11-29 06:02:09,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 06:02:09,157 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 23 states have internal predecessors, (43), 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 27 [2023-11-29 06:02:09,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:02:09,158 INFO L225 Difference]: With dead ends: 76 [2023-11-29 06:02:09,158 INFO L226 Difference]: Without dead ends: 76 [2023-11-29 06:02:09,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=184, Invalid=1505, Unknown=37, NotChecked=80, Total=1806 [2023-11-29 06:02:09,159 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 14 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:02:09,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 382 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 06:02:09,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-29 06:02:09,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2023-11-29 06:02:09,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 69 states have internal predecessors, (88), 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 06:02:09,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2023-11-29 06:02:09,163 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 27 [2023-11-29 06:02:09,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:02:09,163 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2023-11-29 06:02:09,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 23 states have internal predecessors, (43), 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 06:02:09,163 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2023-11-29 06:02:09,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 06:02:09,164 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:02:09,164 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, 1, 1, 1] [2023-11-29 06:02:09,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 06:02:09,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:02:09,364 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:02:09,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:02:09,365 INFO L85 PathProgramCache]: Analyzing trace with hash 680014820, now seen corresponding path program 1 times [2023-11-29 06:02:09,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:02:09,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278782404] [2023-11-29 06:02:09,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:02:09,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:02:09,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:10,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:02:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:10,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 06:02:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:10,329 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 06:02:10,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:02:10,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278782404] [2023-11-29 06:02:10,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278782404] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:02:10,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700062380] [2023-11-29 06:02:10,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:02:10,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:02:10,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:02:10,331 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:02:10,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 06:02:10,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:10,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 63 conjunts are in the unsatisfiable core [2023-11-29 06:02:10,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:02:10,634 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 06:02:10,713 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 06:02:10,714 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 06:02:10,769 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 06:02:10,773 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 06:02:10,896 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:02:10,897 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 06:02:10,907 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 06:02:10,976 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:02:10,976 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 06:02:10,985 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 06:02:11,099 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 06:02:11,103 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 06:02:11,136 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 06:02:11,136 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:02:11,525 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_create_~sll~0#1.offset| 4)) (.cse0 (+ |c_ULTIMATE.start_create_~now~0#1.offset| 4))) (and (forall ((v_ArrVal_1435 (Array Int Int)) (v_ArrVal_1433 (Array Int Int)) (v_ArrVal_1432 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_1432) (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_1433) |c_ULTIMATE.start_create_~now~0#1.base|) .cse0) v_ArrVal_1435) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1) 4))) (forall ((v_ArrVal_1435 (Array Int Int)) (v_ArrVal_1434 (Array Int Int)) (v_ArrVal_1433 (Array Int Int)) (v_ArrVal_1432 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_1433))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_create_~now~0#1.base|) .cse0))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_1432) .cse2 v_ArrVal_1435) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1) 12) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_1434) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1)))))))) is different from false [2023-11-29 06:02:11,539 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (+ |c_ULTIMATE.start_create_~now~0#1.offset| 4))) (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) .cse4)) (.cse2 (+ |c_ULTIMATE.start_create_~sll~0#1.offset| 4))) (and (forall ((v_ArrVal_1435 (Array Int Int)) (v_ArrVal_1434 (Array Int Int)) (v_ArrVal_1433 (Array Int Int)) (v_ArrVal_1432 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_1433))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_create_~now~0#1.base|) .cse4))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_1432) .cse1 v_ArrVal_1435) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse2) 12) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_1434) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse2)))))) (forall ((v_ArrVal_1435 (Array Int Int)) (v_ArrVal_1433 (Array Int Int)) (v_ArrVal_1432 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_1432) (select (select (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_1433) |c_ULTIMATE.start_create_~now~0#1.base|) .cse4) v_ArrVal_1435) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse2) 4)))))) is different from false [2023-11-29 06:02:11,549 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:02:11,549 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 46 treesize of output 47 [2023-11-29 06:02:11,555 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:02:11,555 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 36 treesize of output 37 [2023-11-29 06:02:11,558 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 64 treesize of output 52 [2023-11-29 06:02:11,568 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:02:11,568 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 134 treesize of output 127 [2023-11-29 06:02:11,576 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 82 treesize of output 66 [2023-11-29 06:02:11,580 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 96 treesize of output 84 [2023-11-29 06:02:11,585 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 58 treesize of output 54 [2023-11-29 06:02:11,637 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:02:11,638 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 89 treesize of output 90 [2023-11-29 06:02:11,646 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:02:11,647 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 79 treesize of output 60 [2023-11-29 06:02:11,650 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 06:02:11,651 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 06:02:11,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:02:11,655 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 92 treesize of output 56 [2023-11-29 06:02:11,660 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 06:02:11,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:02:11,663 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 06:02:11,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700062380] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:02:11,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:02:11,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 28 [2023-11-29 06:02:11,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678556760] [2023-11-29 06:02:11,816 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:02:11,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 06:02:11,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:02:11,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 06:02:11,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1096, Unknown=41, NotChecked=138, Total=1406 [2023-11-29 06:02:11,817 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand has 29 states, 25 states have (on average 1.8) internal successors, (45), 24 states have internal predecessors, (45), 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 06:02:12,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:02:12,355 INFO L93 Difference]: Finished difference Result 75 states and 95 transitions. [2023-11-29 06:02:12,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:02:12,355 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 1.8) internal successors, (45), 24 states have internal predecessors, (45), 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 27 [2023-11-29 06:02:12,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:02:12,356 INFO L225 Difference]: With dead ends: 75 [2023-11-29 06:02:12,356 INFO L226 Difference]: Without dead ends: 75 [2023-11-29 06:02:12,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=209, Invalid=1562, Unknown=43, NotChecked=166, Total=1980 [2023-11-29 06:02:12,357 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 13 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:02:12,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 410 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 06:02:12,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-29 06:02:12,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2023-11-29 06:02:12,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 62 states have (on average 1.403225806451613) internal successors, (87), 69 states have internal predecessors, (87), 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 06:02:12,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2023-11-29 06:02:12,361 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 27 [2023-11-29 06:02:12,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:02:12,361 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2023-11-29 06:02:12,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 1.8) internal successors, (45), 24 states have internal predecessors, (45), 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 06:02:12,361 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2023-11-29 06:02:12,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-29 06:02:12,362 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:02:12,362 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 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 06:02:12,367 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 06:02:12,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 06:02:12,563 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:02:12,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:02:12,563 INFO L85 PathProgramCache]: Analyzing trace with hash 657790652, now seen corresponding path program 1 times [2023-11-29 06:02:12,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:02:12,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153979547] [2023-11-29 06:02:12,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:02:12,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:02:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:12,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:02:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:12,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 06:02:12,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:12,860 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:02:12,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:02:12,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153979547] [2023-11-29 06:02:12,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153979547] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:02:12,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244048221] [2023-11-29 06:02:12,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:02:12,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:02:12,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:02:12,862 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:02:12,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 06:02:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:13,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 06:02:13,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:02:13,211 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:02:13,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:02:13,377 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:02:13,378 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 15 treesize of output 19 [2023-11-29 06:02:13,553 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:02:13,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244048221] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:02:13,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:02:13,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26 [2023-11-29 06:02:13,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929248276] [2023-11-29 06:02:13,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:02:13,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 06:02:13,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:02:13,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 06:02:13,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2023-11-29 06:02:13,556 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand has 27 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 24 states have internal predecessors, (68), 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 06:02:13,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:02:13,874 INFO L93 Difference]: Finished difference Result 95 states and 111 transitions. [2023-11-29 06:02:13,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 06:02:13,874 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 24 states have internal predecessors, (68), 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 29 [2023-11-29 06:02:13,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:02:13,875 INFO L225 Difference]: With dead ends: 95 [2023-11-29 06:02:13,875 INFO L226 Difference]: Without dead ends: 95 [2023-11-29 06:02:13,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=126, Invalid=866, Unknown=0, NotChecked=0, Total=992 [2023-11-29 06:02:13,877 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 47 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:02:13,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 190 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:02:13,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-11-29 06:02:13,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 75. [2023-11-29 06:02:13,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 63 states have (on average 1.3650793650793651) internal successors, (86), 70 states have internal predecessors, (86), 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 06:02:13,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2023-11-29 06:02:13,881 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 29 [2023-11-29 06:02:13,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:02:13,881 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2023-11-29 06:02:13,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 24 states have internal predecessors, (68), 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 06:02:13,881 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2023-11-29 06:02:13,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-29 06:02:13,882 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:02:13,882 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, 1, 1, 1] [2023-11-29 06:02:13,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-29 06:02:14,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:02:14,083 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:02:14,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:02:14,083 INFO L85 PathProgramCache]: Analyzing trace with hash 659265645, now seen corresponding path program 2 times [2023-11-29 06:02:14,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:02:14,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418420475] [2023-11-29 06:02:14,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:02:14,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:02:14,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:15,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:02:15,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:15,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 06:02:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:15,445 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:02:15,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:02:15,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418420475] [2023-11-29 06:02:15,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418420475] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:02:15,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437333894] [2023-11-29 06:02:15,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:02:15,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:02:15,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:02:15,448 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:02:15,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 06:02:15,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:02:15,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:02:15,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 94 conjunts are in the unsatisfiable core [2023-11-29 06:02:15,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:02:15,672 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 06:02:15,897 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 06:02:15,906 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 06:02:15,964 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 06:02:15,964 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 06:02:15,972 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 06:02:16,044 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 06:02:16,051 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 06:02:16,056 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 06:02:16,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:02:16,151 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-29 06:02:16,151 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 06:02:16,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:02:16,162 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 06:02:16,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:02:16,250 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-29 06:02:16,251 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 93 treesize of output 66 [2023-11-29 06:02:16,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:02:16,261 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 50 treesize of output 25 [2023-11-29 06:02:16,494 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 06:02:16,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:02:16,661 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem11#1.base|)) (.cse4 (+ |c_ULTIMATE.start_create_~sll~0#1.offset| 4)) (.cse0 (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem11#1.base|)) (.cse1 (+ |c_ULTIMATE.start_create_#t~mem11#1.offset| 12))) (and (forall ((v_ArrVal_1669 (Array Int Int))) (or (not (= (store .cse0 .cse1 (select v_ArrVal_1669 .cse1)) v_ArrVal_1669)) (forall ((v_ArrVal_1667 Int)) (= 0 (let ((.cse2 (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem11#1.base| v_ArrVal_1669))) (select (select .cse2 (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem11#1.base| (store .cse3 .cse1 v_ArrVal_1667)) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse4)) (+ (select (select .cse2 |c_ULTIMATE.start_create_~sll~0#1.base|) .cse4) 4))))))) (forall ((v_ArrVal_1669 (Array Int Int))) (or (forall ((v_ArrVal_1667 Int)) (= (select (let ((.cse5 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem11#1.base| (store .cse3 .cse1 v_ArrVal_1667)))) (select .cse5 (select (select .cse5 |c_ULTIMATE.start_create_~sll~0#1.base|) .cse4))) (+ (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem11#1.base| v_ArrVal_1669) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse4) 4)) 0)) (not (= (store .cse0 .cse1 (select v_ArrVal_1669 .cse1)) v_ArrVal_1669)))))) is different from false [2023-11-29 06:02:16,697 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse9 (+ |c_ULTIMATE.start_create_~now~0#1.offset| 4))) (let ((.cse1 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) .cse9))) (let ((.cse2 (select |c_#memory_$Pointer$#0.base| .cse1)) (.cse4 (+ |c_ULTIMATE.start_create_~sll~0#1.offset| 4)) (.cse5 (select |c_#memory_$Pointer$#0.offset| .cse1)) (.cse6 (select (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~0#1.base|) .cse9))) (and (forall ((|v_ULTIMATE.start_create_#t~mem11#1.offset_32| Int)) (or (forall ((v_ArrVal_1669 (Array Int Int))) (let ((.cse3 (+ |v_ULTIMATE.start_create_#t~mem11#1.offset_32| 12))) (or (forall ((v_ArrVal_1667 Int)) (= (let ((.cse0 (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_1669))) (select (select .cse0 (select (select (store |c_#memory_$Pointer$#0.base| .cse1 (store .cse2 .cse3 v_ArrVal_1667)) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse4)) (+ (select (select .cse0 |c_ULTIMATE.start_create_~sll~0#1.base|) .cse4) 4))) 0)) (not (= v_ArrVal_1669 (store .cse5 .cse3 (select v_ArrVal_1669 .cse3))))))) (< |v_ULTIMATE.start_create_#t~mem11#1.offset_32| .cse6))) (forall ((|v_ULTIMATE.start_create_#t~mem11#1.offset_32| Int)) (or (forall ((v_ArrVal_1669 (Array Int Int))) (let ((.cse8 (+ |v_ULTIMATE.start_create_#t~mem11#1.offset_32| 12))) (or (forall ((v_ArrVal_1667 Int)) (= (select (let ((.cse7 (store |c_#memory_$Pointer$#0.base| .cse1 (store .cse2 .cse8 v_ArrVal_1667)))) (select .cse7 (select (select .cse7 |c_ULTIMATE.start_create_~sll~0#1.base|) .cse4))) (+ (select (select (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_1669) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse4) 4)) 0)) (not (= v_ArrVal_1669 (store .cse5 .cse8 (select v_ArrVal_1669 .cse8))))))) (< |v_ULTIMATE.start_create_#t~mem11#1.offset_32| .cse6))))))) is different from false [2023-11-29 06:02:17,279 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_create_~now~0#1.offset| 4))) (let ((.cse7 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) .cse1))) (let ((.cse9 (select |c_#memory_$Pointer$#0.offset| .cse7)) (.cse6 (+ |c_ULTIMATE.start_create_~sll~0#1.offset| 4)) (.cse8 (select |c_#memory_$Pointer$#0.base| .cse7)) (.cse10 (select (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~0#1.base|) .cse1))) (and (forall ((|v_ULTIMATE.start_create_#t~mem9#1.offset_33| Int)) (or (forall ((v_ArrVal_1665 (Array Int Int))) (or (forall ((|v_ULTIMATE.start_create_#t~mem11#1.offset_32| Int) (v_ArrVal_1666 Int)) (let ((.cse0 (store |c_#memory_$Pointer$#0.offset| .cse7 v_ArrVal_1665))) (or (< |v_ULTIMATE.start_create_#t~mem11#1.offset_32| (select (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) .cse1)) (forall ((v_ArrVal_1669 (Array Int Int))) (let ((.cse5 (store |c_#memory_$Pointer$#0.base| .cse7 (store .cse8 |v_ULTIMATE.start_create_#t~mem9#1.offset_33| v_ArrVal_1666)))) (let ((.cse3 (+ |v_ULTIMATE.start_create_#t~mem11#1.offset_32| 12)) (.cse2 (select (select .cse5 |c_ULTIMATE.start_create_~now~0#1.base|) .cse1))) (or (not (= v_ArrVal_1669 (store (select .cse0 .cse2) .cse3 (select v_ArrVal_1669 .cse3)))) (forall ((v_ArrVal_1667 Int)) (= (let ((.cse4 (store .cse0 .cse2 v_ArrVal_1669))) (select (select .cse4 (select (select (store .cse5 .cse2 (store (select .cse5 .cse2) .cse3 v_ArrVal_1667)) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse6)) (+ (select (select .cse4 |c_ULTIMATE.start_create_~sll~0#1.base|) .cse6) 4))) 0))))))))) (not (= (store .cse9 |v_ULTIMATE.start_create_#t~mem9#1.offset_33| (select v_ArrVal_1665 |v_ULTIMATE.start_create_#t~mem9#1.offset_33|)) v_ArrVal_1665)))) (< .cse10 |v_ULTIMATE.start_create_#t~mem9#1.offset_33|))) (forall ((|v_ULTIMATE.start_create_#t~mem9#1.offset_33| Int)) (or (forall ((v_ArrVal_1665 (Array Int Int))) (or (not (= (store .cse9 |v_ULTIMATE.start_create_#t~mem9#1.offset_33| (select v_ArrVal_1665 |v_ULTIMATE.start_create_#t~mem9#1.offset_33|)) v_ArrVal_1665)) (forall ((|v_ULTIMATE.start_create_#t~mem11#1.offset_32| Int) (v_ArrVal_1666 Int)) (let ((.cse11 (store |c_#memory_$Pointer$#0.offset| .cse7 v_ArrVal_1665))) (or (< |v_ULTIMATE.start_create_#t~mem11#1.offset_32| (select (select .cse11 |c_ULTIMATE.start_create_~now~0#1.base|) .cse1)) (forall ((v_ArrVal_1669 (Array Int Int))) (let ((.cse15 (store |c_#memory_$Pointer$#0.base| .cse7 (store .cse8 |v_ULTIMATE.start_create_#t~mem9#1.offset_33| v_ArrVal_1666)))) (let ((.cse13 (+ |v_ULTIMATE.start_create_#t~mem11#1.offset_32| 12)) (.cse12 (select (select .cse15 |c_ULTIMATE.start_create_~now~0#1.base|) .cse1))) (or (not (= v_ArrVal_1669 (store (select .cse11 .cse12) .cse13 (select v_ArrVal_1669 .cse13)))) (forall ((v_ArrVal_1667 Int)) (= (select (let ((.cse14 (store .cse15 .cse12 (store (select .cse15 .cse12) .cse13 v_ArrVal_1667)))) (select .cse14 (select (select .cse14 |c_ULTIMATE.start_create_~sll~0#1.base|) .cse6))) (+ (select (select (store .cse11 .cse12 v_ArrVal_1669) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse6) 4)) 0))))))))))) (< .cse10 |v_ULTIMATE.start_create_#t~mem9#1.offset_33|))))))) is different from false [2023-11-29 06:02:21,207 INFO L349 Elim1Store]: treesize reduction 405, result has 30.9 percent of original size [2023-11-29 06:02:21,210 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 20 new quantified variables, introduced 56 case distinctions, treesize of input 641953 treesize of output 378679 [2023-11-29 06:02:29,094 INFO L349 Elim1Store]: treesize reduction 653, result has 27.0 percent of original size [2023-11-29 06:02:29,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 18 new quantified variables, introduced 67 case distinctions, treesize of input 60603 treesize of output 43920 [2023-11-29 06:02:34,870 INFO L349 Elim1Store]: treesize reduction 154, result has 73.0 percent of original size [2023-11-29 06:02:34,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 18 new quantified variables, introduced 55 case distinctions, treesize of input 69119 treesize of output 51304 [2023-11-29 06:02:39,173 INFO L349 Elim1Store]: treesize reduction 1218, result has 28.3 percent of original size [2023-11-29 06:02:39,177 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 12 new quantified variables, introduced 56 case distinctions, treesize of input 911401 treesize of output 822553 [2023-11-29 06:02:45,329 WARN L293 SmtUtils]: Spent 6.14s on a formula simplification. DAG size of input: 2525 DAG size of output: 1364 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 06:02:45,611 INFO L224 Elim1Store]: Index analysis took 161 ms [2023-11-29 06:02:47,584 INFO L349 Elim1Store]: treesize reduction 1112, result has 26.0 percent of original size [2023-11-29 06:02:47,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 11 new quantified variables, introduced 56 case distinctions, treesize of input 71256 treesize of output 71223 [2023-11-29 06:02:51,313 INFO L224 Elim1Store]: Index analysis took 114 ms [2023-11-29 06:02:54,211 INFO L349 Elim1Store]: treesize reduction 54, result has 92.3 percent of original size [2023-11-29 06:02:54,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 70861 treesize of output 71422 [2023-11-29 06:07:23,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2023-11-29 06:07:23,113 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:23,114 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-11-29 06:07:23,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 06:07:23,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:07:23,315 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_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:23,319 INFO L158 Benchmark]: Toolchain (without parser) took 337520.08ms. Allocated memory was 172.0MB in the beginning and 685.8MB in the end (delta: 513.8MB). Free memory was 136.5MB in the beginning and 247.0MB in the end (delta: -110.5MB). Peak memory consumption was 426.0MB. Max. memory is 16.1GB. [2023-11-29 06:07:23,320 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 172.0MB. Free memory is still 143.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 06:07:23,320 INFO L158 Benchmark]: CACSL2BoogieTranslator took 456.67ms. Allocated memory is still 172.0MB. Free memory was 136.5MB in the beginning and 116.3MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-29 06:07:23,320 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.30ms. Allocated memory is still 172.0MB. Free memory was 116.3MB in the beginning and 114.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 06:07:23,321 INFO L158 Benchmark]: Boogie Preprocessor took 54.88ms. Allocated memory is still 172.0MB. Free memory was 114.2MB in the beginning and 111.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 06:07:23,321 INFO L158 Benchmark]: RCFGBuilder took 493.40ms. Allocated memory is still 172.0MB. Free memory was 111.5MB in the beginning and 90.0MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-29 06:07:23,321 INFO L158 Benchmark]: TraceAbstraction took 336457.72ms. Allocated memory was 172.0MB in the beginning and 685.8MB in the end (delta: 513.8MB). Free memory was 89.0MB in the beginning and 247.0MB in the end (delta: -158.0MB). Peak memory consumption was 377.8MB. Max. memory is 16.1GB. [2023-11-29 06:07:23,323 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 172.0MB. Free memory is still 143.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 456.67ms. Allocated memory is still 172.0MB. Free memory was 136.5MB in the beginning and 116.3MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.30ms. Allocated memory is still 172.0MB. Free memory was 116.3MB in the beginning and 114.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.88ms. Allocated memory is still 172.0MB. Free memory was 114.2MB in the beginning and 111.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 493.40ms. Allocated memory is still 172.0MB. Free memory was 111.5MB in the beginning and 90.0MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 336457.72ms. Allocated memory was 172.0MB in the beginning and 685.8MB in the end (delta: 513.8MB). Free memory was 89.0MB in the beginning and 247.0MB in the end (delta: -158.0MB). Peak memory consumption was 377.8MB. 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_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-broom/sll-middle-data.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 1f089d84611e193726b0906f7c8f41bdfbd2779029235be3e70f3cbcf8b5071e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:07:25,438 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:07:25,516 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2023-11-29 06:07:25,524 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:07:25,525 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:07:25,568 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:07:25,569 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:07:25,570 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:07:25,570 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:07:25,571 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:07:25,572 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:07:25,573 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:07:25,573 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:07:25,574 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:07:25,575 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:07:25,575 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:07:25,576 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:07:25,577 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:07:25,577 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 06:07:25,578 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 06:07:25,578 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 06:07:25,579 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:07:25,580 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 06:07:25,580 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 06:07:25,581 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 06:07:25,581 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 06:07:25,581 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:07:25,582 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:07:25,582 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:07:25,583 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:07:25,583 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:07:25,584 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:07:25,584 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:07:25,584 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:07:25,585 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 06:07:25,585 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 06:07:25,585 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:07:25,585 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:07:25,586 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:07:25,586 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:07:25,586 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 06:07:25,586 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_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f089d84611e193726b0906f7c8f41bdfbd2779029235be3e70f3cbcf8b5071e [2023-11-29 06:07:25,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:07:25,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:07:25,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:07:25,952 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:07:25,952 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:07:25,954 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/memsafety-broom/sll-middle-data.i [2023-11-29 06:07:29,120 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:07:29,442 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:07:29,443 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/sv-benchmarks/c/memsafety-broom/sll-middle-data.i [2023-11-29 06:07:29,483 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/data/56e9b6a00/90182425fa4f43e48e5f0839c44733b2/FLAG410db624e [2023-11-29 06:07:29,502 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/data/56e9b6a00/90182425fa4f43e48e5f0839c44733b2 [2023-11-29 06:07:29,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:07:29,508 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:07:29,510 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:07:29,510 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:07:29,517 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:07:29,518 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:07:29" (1/1) ... [2023-11-29 06:07:29,519 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14dd6058 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:29, skipping insertion in model container [2023-11-29 06:07:29,520 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:07:29" (1/1) ... [2023-11-29 06:07:29,623 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:07:29,988 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:07:30,004 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:07:30,054 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:07:30,095 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:07:30,095 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:30 WrapperNode [2023-11-29 06:07:30,095 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:07:30,097 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:07:30,097 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:07:30,097 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:07:30,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:30" (1/1) ... [2023-11-29 06:07:30,126 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:30" (1/1) ... [2023-11-29 06:07:30,155 INFO L138 Inliner]: procedures = 122, calls = 21, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 72 [2023-11-29 06:07:30,156 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:07:30,157 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:07:30,157 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:07:30,157 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:07:30,170 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:30" (1/1) ... [2023-11-29 06:07:30,171 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:30" (1/1) ... [2023-11-29 06:07:30,175 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:30" (1/1) ... [2023-11-29 06:07:30,198 INFO L175 MemorySlicer]: Split 11 memory accesses to 1 slices as follows [11]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 6 writes are split as follows [6]. [2023-11-29 06:07:30,198 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:30" (1/1) ... [2023-11-29 06:07:30,199 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:30" (1/1) ... [2023-11-29 06:07:30,209 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:30" (1/1) ... [2023-11-29 06:07:30,213 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:30" (1/1) ... [2023-11-29 06:07:30,216 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:30" (1/1) ... [2023-11-29 06:07:30,218 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:30" (1/1) ... [2023-11-29 06:07:30,223 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:07:30,224 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:07:30,224 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:07:30,224 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:07:30,225 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:30" (1/1) ... [2023-11-29 06:07:30,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:07:30,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:07:30,262 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:07:30,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:07:30,306 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero [2023-11-29 06:07:30,306 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero [2023-11-29 06:07:30,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 06:07:30,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 06:07:30,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 06:07:30,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 06:07:30,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 06:07:30,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:07:30,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:07:30,466 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:07:30,469 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:07:30,994 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:07:31,066 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:07:31,066 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 06:07:31,067 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:07:31 BoogieIcfgContainer [2023-11-29 06:07:31,067 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:07:31,070 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:07:31,071 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:07:31,075 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:07:31,075 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:07:29" (1/3) ... [2023-11-29 06:07:31,076 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c7fa6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:07:31, skipping insertion in model container [2023-11-29 06:07:31,076 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:30" (2/3) ... [2023-11-29 06:07:31,077 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c7fa6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:07:31, skipping insertion in model container [2023-11-29 06:07:31,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:07:31" (3/3) ... [2023-11-29 06:07:31,079 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-middle-data.i [2023-11-29 06:07:31,104 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:07:31,104 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-11-29 06:07:31,163 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:07:31,172 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;@1986bb87, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:07:31,173 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-11-29 06:07:31,178 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 25 states have (on average 2.28) internal successors, (57), 51 states have internal predecessors, (57), 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 06:07:31,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-29 06:07:31,187 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:07:31,187 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-29 06:07:31,188 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 23 more)] === [2023-11-29 06:07:31,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:07:31,196 INFO L85 PathProgramCache]: Analyzing trace with hash 4451354, now seen corresponding path program 1 times [2023-11-29 06:07:31,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:07:31,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652102723] [2023-11-29 06:07:31,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:31,213 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 06:07:31,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:07:31,217 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:31,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:31,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:07:31,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:07:31,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:07:31,400 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 06:07:31,437 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 06:07:31,438 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:07:31,440 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:07:31,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652102723] [2023-11-29 06:07:31,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652102723] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:07:31,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:07:31,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:07:31,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049669160] [2023-11-29 06:07:31,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:07:31,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:07:31,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:07:31,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:07:31,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:07:31,521 INFO L87 Difference]: Start difference. First operand has 55 states, 25 states have (on average 2.28) internal successors, (57), 51 states have internal predecessors, (57), 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 06:07:31,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:07:31,796 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2023-11-29 06:07:31,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:07:31,800 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 06:07:31,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:07:31,809 INFO L225 Difference]: With dead ends: 54 [2023-11-29 06:07:31,809 INFO L226 Difference]: Without dead ends: 53 [2023-11-29 06:07:31,811 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 06:07:31,816 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 2 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:07:31,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 66 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:07:31,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-11-29 06:07:31,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-11-29 06:07:31,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 25 states have (on average 2.08) internal successors, (52), 49 states have internal predecessors, (52), 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 06:07:31,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2023-11-29 06:07:31,864 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 4 [2023-11-29 06:07:31,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:07:31,865 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2023-11-29 06:07:31,865 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 06:07:31,865 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2023-11-29 06:07:31,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-29 06:07:31,866 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:07:31,866 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-29 06:07:31,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:32,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:32,068 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 23 more)] === [2023-11-29 06:07:32,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:07:32,069 INFO L85 PathProgramCache]: Analyzing trace with hash 4451355, now seen corresponding path program 1 times [2023-11-29 06:07:32,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:07:32,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062570374] [2023-11-29 06:07:32,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:32,070 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 06:07:32,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:07:32,072 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:32,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:07:32,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 06:07:32,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:07:32,171 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 06:07:32,192 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 06:07:32,192 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:07:32,193 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:07:32,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062570374] [2023-11-29 06:07:32,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062570374] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:07:32,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:07:32,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:07:32,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196855282] [2023-11-29 06:07:32,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:07:32,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:07:32,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:07:32,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:07:32,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:07:32,198 INFO L87 Difference]: Start difference. First operand 53 states and 56 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 06:07:32,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:07:32,558 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2023-11-29 06:07:32,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:07:32,560 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 06:07:32,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:07:32,561 INFO L225 Difference]: With dead ends: 52 [2023-11-29 06:07:32,562 INFO L226 Difference]: Without dead ends: 52 [2023-11-29 06:07:32,562 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 06:07:32,564 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 1 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:07:32,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 69 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 06:07:32,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-11-29 06:07:32,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-11-29 06:07:32,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 25 states have (on average 2.04) internal successors, (51), 48 states have internal predecessors, (51), 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 06:07:32,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2023-11-29 06:07:32,574 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 4 [2023-11-29 06:07:32,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:07:32,575 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2023-11-29 06:07:32,575 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 06:07:32,575 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2023-11-29 06:07:32,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 06:07:32,576 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:07:32,576 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:07:32,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:32,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:32,777 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 23 more)] === [2023-11-29 06:07:32,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:07:32,778 INFO L85 PathProgramCache]: Analyzing trace with hash -530348794, now seen corresponding path program 1 times [2023-11-29 06:07:32,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:07:32,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1357144310] [2023-11-29 06:07:32,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:32,780 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 06:07:32,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:07:32,782 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:32,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:32,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:07:32,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 06:07:32,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:07:32,871 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 06:07:32,930 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 06:07:32,931 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:07:32,931 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:07:32,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1357144310] [2023-11-29 06:07:32,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1357144310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:07:32,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:07:32,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:07:32,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953813576] [2023-11-29 06:07:32,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:07:32,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:07:32,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:07:32,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:07:32,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:07:32,936 INFO L87 Difference]: Start difference. First operand 52 states and 55 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 06:07:33,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:07:33,529 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2023-11-29 06:07:33,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:07:33,531 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 06:07:33,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:07:33,534 INFO L225 Difference]: With dead ends: 51 [2023-11-29 06:07:33,534 INFO L226 Difference]: Without dead ends: 51 [2023-11-29 06:07:33,535 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 06:07:33,537 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 19 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:07:33,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 97 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 06:07:33,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-29 06:07:33,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2023-11-29 06:07:33,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 25 states have (on average 1.84) internal successors, (46), 43 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 06:07:33,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2023-11-29 06:07:33,549 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 7 [2023-11-29 06:07:33,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:07:33,549 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2023-11-29 06:07:33,550 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 06:07:33,550 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2023-11-29 06:07:33,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 06:07:33,551 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:07:33,551 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:07:33,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:33,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:33,752 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 23 more)] === [2023-11-29 06:07:33,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:07:33,753 INFO L85 PathProgramCache]: Analyzing trace with hash -530348793, now seen corresponding path program 1 times [2023-11-29 06:07:33,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:07:33,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [380250702] [2023-11-29 06:07:33,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:33,755 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 06:07:33,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:07:33,757 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:33,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:07:33,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 06:07:33,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:07:33,841 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 06:07:33,962 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 06:07:33,963 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:07:33,963 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:07:33,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [380250702] [2023-11-29 06:07:33,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [380250702] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:07:33,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:07:33,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:07:33,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843009890] [2023-11-29 06:07:33,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:07:33,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:07:33,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:07:33,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:07:33,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:07:33,966 INFO L87 Difference]: Start difference. First operand 47 states and 50 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 06:07:34,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:07:34,478 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2023-11-29 06:07:34,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:07:34,480 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 06:07:34,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:07:34,481 INFO L225 Difference]: With dead ends: 49 [2023-11-29 06:07:34,481 INFO L226 Difference]: Without dead ends: 49 [2023-11-29 06:07:34,481 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 06:07:34,482 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:07:34,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 116 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 06:07:34,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-29 06:07:34,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2023-11-29 06:07:34,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 25 states have (on average 1.76) internal successors, (44), 41 states have internal predecessors, (44), 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 06:07:34,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2023-11-29 06:07:34,488 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 7 [2023-11-29 06:07:34,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:07:34,488 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2023-11-29 06:07:34,489 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 06:07:34,489 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2023-11-29 06:07:34,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-29 06:07:34,489 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:07:34,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:07:34,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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)] Ended with exit code 0 [2023-11-29 06:07:34,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:34,691 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:07:34,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:07:34,691 INFO L85 PathProgramCache]: Analyzing trace with hash -928522982, now seen corresponding path program 1 times [2023-11-29 06:07:34,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:07:34,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795528442] [2023-11-29 06:07:34,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:34,692 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 06:07:34,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:07:34,693 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:34,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:07:34,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 06:07:34,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:07:34,786 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 06:07:34,884 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 06:07:34,885 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:07:34,885 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:07:34,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795528442] [2023-11-29 06:07:34,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795528442] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:07:34,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:07:34,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:07:34,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425498978] [2023-11-29 06:07:34,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:07:34,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:07:34,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:07:34,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:07:34,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:07:34,889 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 06:07:35,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:07:35,357 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2023-11-29 06:07:35,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:07:35,358 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 13 [2023-11-29 06:07:35,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:07:35,359 INFO L225 Difference]: With dead ends: 53 [2023-11-29 06:07:35,359 INFO L226 Difference]: Without dead ends: 53 [2023-11-29 06:07:35,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 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 06:07:35,361 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 4 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:07:35,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 125 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 06:07:35,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-11-29 06:07:35,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2023-11-29 06:07:35,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 46 states have internal predecessors, (52), 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 06:07:35,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2023-11-29 06:07:35,370 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 13 [2023-11-29 06:07:35,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:07:35,370 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2023-11-29 06:07:35,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 06:07:35,371 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2023-11-29 06:07:35,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-29 06:07:35,372 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:07:35,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:07:35,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:35,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:35,573 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:07:35,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:07:35,573 INFO L85 PathProgramCache]: Analyzing trace with hash -928522981, now seen corresponding path program 1 times [2023-11-29 06:07:35,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:07:35,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1875640397] [2023-11-29 06:07:35,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:35,574 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 06:07:35,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:07:35,575 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:35,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:07:35,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 06:07:35,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:07:35,689 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 06:07:35,874 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 06:07:35,874 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:07:35,875 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:07:35,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1875640397] [2023-11-29 06:07:35,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1875640397] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:07:35,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:07:35,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:07:35,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997242685] [2023-11-29 06:07:35,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:07:35,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:07:35,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:07:35,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:07:35,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:07:35,878 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 06:07:36,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:07:36,487 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2023-11-29 06:07:36,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:07:36,488 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 13 [2023-11-29 06:07:36,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:07:36,490 INFO L225 Difference]: With dead ends: 52 [2023-11-29 06:07:36,490 INFO L226 Difference]: Without dead ends: 52 [2023-11-29 06:07:36,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 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 06:07:36,491 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 3 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:07:36,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 130 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 06:07:36,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-11-29 06:07:36,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2023-11-29 06:07:36,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 30 states have (on average 1.7) internal successors, (51), 46 states have internal predecessors, (51), 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 06:07:36,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2023-11-29 06:07:36,498 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 13 [2023-11-29 06:07:36,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:07:36,499 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2023-11-29 06:07:36,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 06:07:36,499 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2023-11-29 06:07:36,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 06:07:36,500 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:07:36,500 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:07:36,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:36,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:36,701 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:07:36,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:07:36,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1092820800, now seen corresponding path program 1 times [2023-11-29 06:07:36,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:07:36,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1925564336] [2023-11-29 06:07:36,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:36,703 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 06:07:36,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:07:36,704 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:36,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:36,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:07:36,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 06:07:36,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:07:36,877 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 06:07:36,885 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 06:07:37,140 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 06:07:37,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:07:37,186 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 06:07:37,213 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 06:07:37,213 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 06:07:37,247 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 06:07:37,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:07:37,670 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:07:37,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1925564336] [2023-11-29 06:07:37,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1925564336] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:07:37,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [728767505] [2023-11-29 06:07:37,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:37,670 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 06:07:37,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 06:07:37,672 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 06:07:37,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-11-29 06:07:37,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:07:37,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 06:07:37,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:07:37,871 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 06:07:37,878 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 06:07:38,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:07:38,071 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 06:07:38,091 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 06:07:38,092 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 06:07:38,095 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 06:07:38,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:07:42,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [728767505] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:07:42,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:07:42,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2023-11-29 06:07:42,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31541206] [2023-11-29 06:07:42,454 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:07:42,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:07:42,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:07:42,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:07:42,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=70, Unknown=1, NotChecked=16, Total=110 [2023-11-29 06:07:42,455 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 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 06:07:43,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:07:43,530 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2023-11-29 06:07:43,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:07:43,531 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 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 15 [2023-11-29 06:07:43,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:07:43,532 INFO L225 Difference]: With dead ends: 62 [2023-11-29 06:07:43,532 INFO L226 Difference]: Without dead ends: 62 [2023-11-29 06:07:43,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=31, Invalid=104, Unknown=1, NotChecked=20, Total=156 [2023-11-29 06:07:43,533 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 11 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:07:43,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 110 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 214 Invalid, 0 Unknown, 63 Unchecked, 0.9s Time] [2023-11-29 06:07:43,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-29 06:07:43,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 57. [2023-11-29 06:07:43,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 36 states have (on average 1.7222222222222223) internal successors, (62), 52 states have internal predecessors, (62), 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 06:07:43,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2023-11-29 06:07:43,538 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 15 [2023-11-29 06:07:43,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:07:43,538 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2023-11-29 06:07:43,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 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 06:07:43,539 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2023-11-29 06:07:43,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 06:07:43,540 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:07:43,540 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:07:43,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:43,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2023-11-29 06:07:43,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 06:07:43,941 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:07:43,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:07:43,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1092820799, now seen corresponding path program 1 times [2023-11-29 06:07:43,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:07:43,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618860466] [2023-11-29 06:07:43,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:43,942 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 06:07:43,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:07:43,943 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:43,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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)] Waiting until timeout for monitored process [2023-11-29 06:07:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:07:44,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 06:07:44,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:07:44,056 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 06:07:44,147 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 06:07:44,179 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 06:07:44,180 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 06:07:44,205 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 06:07:44,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:07:44,455 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 06:07:44,456 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:07:44,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618860466] [2023-11-29 06:07:44,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618860466] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:07:44,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:07:44,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2023-11-29 06:07:44,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881534217] [2023-11-29 06:07:44,457 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:07:44,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:07:44,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:07:44,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:07:44,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=43, Unknown=1, NotChecked=12, Total=72 [2023-11-29 06:07:44,469 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand has 9 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 06:07:45,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:07:45,120 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2023-11-29 06:07:45,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:07:45,121 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 15 [2023-11-29 06:07:45,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:07:45,122 INFO L225 Difference]: With dead ends: 57 [2023-11-29 06:07:45,122 INFO L226 Difference]: Without dead ends: 57 [2023-11-29 06:07:45,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 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 06:07:45,123 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 14 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:07:45,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 129 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 182 Invalid, 0 Unknown, 53 Unchecked, 0.6s Time] [2023-11-29 06:07:45,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-29 06:07:45,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-11-29 06:07:45,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 36 states have (on average 1.6944444444444444) internal successors, (61), 52 states have internal predecessors, (61), 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 06:07:45,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2023-11-29 06:07:45,129 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 15 [2023-11-29 06:07:45,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:07:45,129 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2023-11-29 06:07:45,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 06:07:45,130 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2023-11-29 06:07:45,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 06:07:45,130 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:07:45,131 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:07:45,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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)] Ended with exit code 0 [2023-11-29 06:07:45,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:45,331 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:07:45,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:07:45,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1041190450, now seen corresponding path program 1 times [2023-11-29 06:07:45,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:07:45,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863812304] [2023-11-29 06:07:45,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:45,332 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 06:07:45,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:07:45,333 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:45,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:07:45,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 06:07:45,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:07:45,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:07:45,488 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:07:45,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:07:45,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [863812304] [2023-11-29 06:07:45,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [863812304] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:07:45,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:07:45,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:07:45,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748535966] [2023-11-29 06:07:45,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:07:45,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:07:45,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:07:45,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:07:45,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:07:45,491 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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 06:07:45,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:07:45,857 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2023-11-29 06:07:45,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:07:45,859 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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 15 [2023-11-29 06:07:45,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:07:45,860 INFO L225 Difference]: With dead ends: 61 [2023-11-29 06:07:45,860 INFO L226 Difference]: Without dead ends: 61 [2023-11-29 06:07:45,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 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 06:07:45,861 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 20 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:07:45,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 179 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 06:07:45,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-29 06:07:45,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2023-11-29 06:07:45,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 37 states have (on average 1.6486486486486487) internal successors, (61), 53 states have internal predecessors, (61), 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 06:07:45,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2023-11-29 06:07:45,868 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 15 [2023-11-29 06:07:45,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:07:45,868 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2023-11-29 06:07:45,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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 06:07:45,869 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2023-11-29 06:07:45,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 06:07:45,870 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:07:45,870 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:07:45,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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)] Ended with exit code 0 [2023-11-29 06:07:46,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:46,071 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:07:46,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:07:46,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1042665444, now seen corresponding path program 1 times [2023-11-29 06:07:46,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:07:46,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [173176051] [2023-11-29 06:07:46,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:46,072 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 06:07:46,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:07:46,073 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:46,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:07:46,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 06:07:46,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:07:46,203 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 06:07:46,212 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 06:07:46,400 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 06:07:46,414 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 06:07:46,439 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 06:07:46,461 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 06:07:46,659 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 06:07:46,659 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:07:48,316 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 06:07:48,317 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:07:48,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [173176051] [2023-11-29 06:07:48,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [173176051] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:07:48,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:07:48,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-11-29 06:07:48,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505488199] [2023-11-29 06:07:48,317 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:07:48,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 06:07:48,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:07:48,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 06:07:48,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:07:48,319 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 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 06:07:48,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:07:48,968 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2023-11-29 06:07:48,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:07:48,968 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 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 15 [2023-11-29 06:07:48,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:07:48,969 INFO L225 Difference]: With dead ends: 59 [2023-11-29 06:07:48,969 INFO L226 Difference]: Without dead ends: 59 [2023-11-29 06:07:48,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:07:48,970 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 10 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:07:48,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 205 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 06:07:48,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-29 06:07:48,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-11-29 06:07:48,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 38 states have (on average 1.631578947368421) internal successors, (62), 54 states have internal predecessors, (62), 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 06:07:48,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2023-11-29 06:07:48,976 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 15 [2023-11-29 06:07:48,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:07:48,976 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2023-11-29 06:07:48,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 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 06:07:48,977 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2023-11-29 06:07:48,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 06:07:48,977 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:07:48,978 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:07:48,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:49,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:49,179 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:07:49,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:07:49,179 INFO L85 PathProgramCache]: Analyzing trace with hash -2066117182, now seen corresponding path program 1 times [2023-11-29 06:07:49,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:07:49,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447203841] [2023-11-29 06:07:49,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:49,180 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 06:07:49,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:07:49,181 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:49,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:49,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:07:49,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 06:07:49,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:07:49,323 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 06:07:49,371 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 06:07:49,412 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 06:07:49,436 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 06:07:49,437 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:07:49,437 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:07:49,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447203841] [2023-11-29 06:07:49,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447203841] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:07:49,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:07:49,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:07:49,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442148120] [2023-11-29 06:07:49,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:07:49,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:07:49,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:07:49,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:07:49,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:07:49,439 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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 06:07:50,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:07:50,081 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2023-11-29 06:07:50,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:07:50,083 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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 17 [2023-11-29 06:07:50,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:07:50,084 INFO L225 Difference]: With dead ends: 58 [2023-11-29 06:07:50,084 INFO L226 Difference]: Without dead ends: 58 [2023-11-29 06:07:50,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 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 06:07:50,085 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 7 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:07:50,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 130 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 06:07:50,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-11-29 06:07:50,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2023-11-29 06:07:50,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 38 states have (on average 1.5789473684210527) internal successors, (60), 53 states have internal predecessors, (60), 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 06:07:50,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2023-11-29 06:07:50,090 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 17 [2023-11-29 06:07:50,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:07:50,090 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2023-11-29 06:07:50,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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 06:07:50,090 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2023-11-29 06:07:50,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 06:07:50,091 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:07:50,091 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:07:50,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:50,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:50,292 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:07:50,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:07:50,293 INFO L85 PathProgramCache]: Analyzing trace with hash -2066117181, now seen corresponding path program 1 times [2023-11-29 06:07:50,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:07:50,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1617993216] [2023-11-29 06:07:50,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:50,293 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 06:07:50,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:07:50,295 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:50,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:07:50,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 06:07:50,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:07:50,433 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 06:07:50,522 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 06:07:50,531 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 06:07:50,600 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 06:07:50,647 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 06:07:50,648 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:07:50,648 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:07:50,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1617993216] [2023-11-29 06:07:50,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1617993216] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:07:50,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:07:50,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:07:50,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473325394] [2023-11-29 06:07:50,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:07:50,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:07:50,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:07:50,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:07:50,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:07:50,650 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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 06:07:51,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:07:51,323 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2023-11-29 06:07:51,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:07:51,324 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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 17 [2023-11-29 06:07:51,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:07:51,325 INFO L225 Difference]: With dead ends: 57 [2023-11-29 06:07:51,325 INFO L226 Difference]: Without dead ends: 57 [2023-11-29 06:07:51,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:07:51,326 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 5 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:07:51,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 137 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 06:07:51,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-29 06:07:51,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-11-29 06:07:51,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.5263157894736843) internal successors, (58), 52 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 06:07:51,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2023-11-29 06:07:51,332 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 17 [2023-11-29 06:07:51,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:07:51,333 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2023-11-29 06:07:51,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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 06:07:51,333 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2023-11-29 06:07:51,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 06:07:51,334 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:07:51,334 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 06:07:51,338 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:51,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:51,535 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:07:51,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:07:51,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1272690300, now seen corresponding path program 1 times [2023-11-29 06:07:51,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:07:51,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [97710991] [2023-11-29 06:07:51,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:51,536 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 06:07:51,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:07:51,537 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:51,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:07:51,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 06:07:51,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:07:51,651 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 06:07:51,768 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 06:07:51,768 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:07:51,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:07:51,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [97710991] [2023-11-29 06:07:51,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [97710991] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:07:51,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:07:51,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:07:51,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762505374] [2023-11-29 06:07:51,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:07:51,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:07:51,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:07:51,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:07:51,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:07:51,770 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand has 8 states, 6 states have (on average 2.5) 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 06:07:52,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:07:52,467 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2023-11-29 06:07:52,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:07:52,468 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.5) 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 06:07:52,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:07:52,469 INFO L225 Difference]: With dead ends: 68 [2023-11-29 06:07:52,469 INFO L226 Difference]: Without dead ends: 68 [2023-11-29 06:07:52,469 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 06:07:52,470 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 24 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:07:52,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 106 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 06:07:52,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-29 06:07:52,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 59. [2023-11-29 06:07:52,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 41 states have (on average 1.5121951219512195) internal successors, (62), 54 states have internal predecessors, (62), 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 06:07:52,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2023-11-29 06:07:52,476 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 17 [2023-11-29 06:07:52,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:07:52,476 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2023-11-29 06:07:52,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.5) 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 06:07:52,476 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2023-11-29 06:07:52,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 06:07:52,477 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:07:52,477 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 06:07:52,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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)] Forceful destruction successful, exit code 0 [2023-11-29 06:07:52,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:52,678 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:07:52,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:07:52,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1272690301, now seen corresponding path program 1 times [2023-11-29 06:07:52,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:07:52,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [173133386] [2023-11-29 06:07:52,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:52,680 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 06:07:52,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:07:52,681 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:52,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:07:52,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 06:07:52,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:07:52,801 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 06:07:53,026 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 06:07:53,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:07:53,026 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:07:53,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [173133386] [2023-11-29 06:07:53,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [173133386] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:07:53,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:07:53,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:07:53,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447682681] [2023-11-29 06:07:53,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:07:53,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:07:53,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:07:53,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:07:53,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:07:53,028 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand has 8 states, 6 states have (on average 2.5) 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 06:07:53,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:07:53,837 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions. [2023-11-29 06:07:53,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:07:53,838 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.5) 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 06:07:53,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:07:53,839 INFO L225 Difference]: With dead ends: 76 [2023-11-29 06:07:53,839 INFO L226 Difference]: Without dead ends: 76 [2023-11-29 06:07:53,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:07:53,840 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 28 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:07:53,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 97 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 06:07:53,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-29 06:07:53,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 60. [2023-11-29 06:07:53,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 42 states have (on average 1.4761904761904763) internal successors, (62), 55 states have internal predecessors, (62), 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 06:07:53,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2023-11-29 06:07:53,845 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 17 [2023-11-29 06:07:53,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:07:53,846 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2023-11-29 06:07:53,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.5) 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 06:07:53,846 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2023-11-29 06:07:53,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 06:07:53,847 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:07:53,847 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 06:07:53,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:54,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:54,051 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:07:54,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:07:54,051 INFO L85 PathProgramCache]: Analyzing trace with hash 798692189, now seen corresponding path program 1 times [2023-11-29 06:07:54,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:07:54,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1368936629] [2023-11-29 06:07:54,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:54,052 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 06:07:54,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:07:54,053 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:54,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:07:54,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 06:07:54,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:07:54,244 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 06:07:54,244 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:07:54,244 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:07:54,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1368936629] [2023-11-29 06:07:54,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1368936629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:07:54,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:07:54,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 06:07:54,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092336115] [2023-11-29 06:07:54,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:07:54,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:07:54,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:07:54,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:07:54,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:07:54,246 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand has 8 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 06:07:54,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:07:54,611 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2023-11-29 06:07:54,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:07:54,612 INFO L78 Accepts]: Start accepts. Automaton has has 8 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 06:07:54,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:07:54,613 INFO L225 Difference]: With dead ends: 69 [2023-11-29 06:07:54,613 INFO L226 Difference]: Without dead ends: 69 [2023-11-29 06:07:54,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 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 06:07:54,614 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 44 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:07:54,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 153 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 06:07:54,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-11-29 06:07:54,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 61. [2023-11-29 06:07:54,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 43 states have (on average 1.441860465116279) internal successors, (62), 56 states have internal predecessors, (62), 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 06:07:54,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2023-11-29 06:07:54,618 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 18 [2023-11-29 06:07:54,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:07:54,618 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2023-11-29 06:07:54,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 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 06:07:54,618 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2023-11-29 06:07:54,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 06:07:54,619 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:07:54,620 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:07:54,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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)] Forceful destruction successful, exit code 0 [2023-11-29 06:07:54,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:54,820 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:07:54,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:07:54,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1263640471, now seen corresponding path program 1 times [2023-11-29 06:07:54,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:07:54,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20443548] [2023-11-29 06:07:54,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:54,821 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 06:07:54,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:07:54,822 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:54,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:07:54,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:07:54,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 06:07:54,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:07:55,002 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 7 [2023-11-29 06:07:55,092 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 06:07:55,193 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 06:07:55,193 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 06:07:55,255 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 06:07:55,274 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 06:07:55,498 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:07:55,498 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 06:07:55,507 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 06:07:55,539 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 06:07:55,545 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 06:07:55,600 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 06:07:55,601 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:07:56,063 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_ULTIMATE.start_create_~now~0#1.offset| (_ bv4 64)))) (and (forall ((v_ArrVal_400 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_399 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (_ bv16 64) (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_400) |c_ULTIMATE.start_create_~now~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_399) |c_ULTIMATE.start_create_~now~0#1.base|) .cse0)))) (forall ((v_ArrVal_400 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_400) |c_ULTIMATE.start_create_~now~0#1.base|) .cse0))) (bvule (bvadd .cse1 (_ bv12 64)) (bvadd (_ bv16 64) .cse1)))))) is different from false [2023-11-29 06:07:56,139 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd |c_ULTIMATE.start_create_~now~0#1.offset| (_ bv4 64)))) (let ((.cse1 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) .cse2))) (and (forall ((v_ArrVal_400 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_400) |c_ULTIMATE.start_create_~now~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv12 64)) (bvadd .cse0 (_ bv16 64))))) (forall ((v_ArrVal_400 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_399 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_400) |c_ULTIMATE.start_create_~now~0#1.base|) .cse2) (_ bv16 64)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| .cse1 v_ArrVal_399) |c_ULTIMATE.start_create_~now~0#1.base|) .cse2))))))) is different from false [2023-11-29 06:07:56,171 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:07:56,171 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 06:07:56,190 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:07:56,190 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 06:07:56,199 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 62 treesize of output 50 [2023-11-29 06:07:56,203 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 96 treesize of output 78 [2023-11-29 06:07:56,223 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 06:07:56,228 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 06:07:56,273 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:07:56,273 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 06:07:56,285 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 54 treesize of output 36 [2023-11-29 06:07:57,454 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 06:07:57,454 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:07:57,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20443548] [2023-11-29 06:07:57,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20443548] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:07:57,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:07:57,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 20 [2023-11-29 06:07:57,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617097398] [2023-11-29 06:07:57,455 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:07:57,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 06:07:57,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:07:57,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 06:07:57,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=301, Unknown=2, NotChecked=70, Total=420 [2023-11-29 06:07:57,456 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand has 21 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 06:07:59,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:07:59,914 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2023-11-29 06:07:59,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 06:07:59,916 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2023-11-29 06:07:59,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:07:59,917 INFO L225 Difference]: With dead ends: 62 [2023-11-29 06:07:59,917 INFO L226 Difference]: Without dead ends: 62 [2023-11-29 06:07:59,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=88, Invalid=518, Unknown=2, NotChecked=94, Total=702 [2023-11-29 06:07:59,918 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 26 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:07:59,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 247 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 307 Invalid, 0 Unknown, 74 Unchecked, 1.8s Time] [2023-11-29 06:07:59,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-29 06:07:59,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2023-11-29 06:07:59,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 56 states have internal predecessors, (61), 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 06:07:59,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2023-11-29 06:07:59,921 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 19 [2023-11-29 06:07:59,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:07:59,921 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2023-11-29 06:07:59,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 06:07:59,921 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2023-11-29 06:07:59,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 06:07:59,922 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:07:59,922 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:07:59,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:08:00,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:08:00,123 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 23 more)] === [2023-11-29 06:08:00,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:08:00,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1263640472, now seen corresponding path program 1 times [2023-11-29 06:08:00,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:08:00,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [360919397] [2023-11-29 06:08:00,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:08:00,124 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 06:08:00,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:08:00,125 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:08:00,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:08:00,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:08:00,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 06:08:00,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:08:00,270 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 06:08:00,400 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 06:08:00,400 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 06:08:00,449 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 06:08:00,621 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:08:00,621 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 44 treesize of output 43 [2023-11-29 06:08:00,636 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 06:08:00,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:08:00,692 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:08:00,692 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:08:00,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [360919397] [2023-11-29 06:08:00,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [360919397] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:08:00,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:08:00,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 06:08:00,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393678472] [2023-11-29 06:08:00,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:08:00,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 06:08:00,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:08:00,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 06:08:00,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:08:00,694 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand has 13 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 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 06:08:01,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:08:01,659 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2023-11-29 06:08:01,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 06:08:01,660 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 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 19 [2023-11-29 06:08:01,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:08:01,661 INFO L225 Difference]: With dead ends: 61 [2023-11-29 06:08:01,661 INFO L226 Difference]: Without dead ends: 61 [2023-11-29 06:08:01,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:08:01,662 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 14 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:08:01,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 190 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 06:08:01,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-29 06:08:01,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2023-11-29 06:08:01,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 56 states have internal predecessors, (60), 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 06:08:01,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2023-11-29 06:08:01,664 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 19 [2023-11-29 06:08:01,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:08:01,665 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2023-11-29 06:08:01,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 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 06:08:01,665 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2023-11-29 06:08:01,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 06:08:01,665 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:08:01,666 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:08:01,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:08:01,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:08:01,866 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:08:01,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:08:01,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1010272136, now seen corresponding path program 1 times [2023-11-29 06:08:01,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:08:01,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [255710623] [2023-11-29 06:08:01,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:08:01,867 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 06:08:01,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:08:01,868 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:08:01,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:08:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:08:01,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 06:08:01,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:08:02,251 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 06:08:02,251 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:08:02,251 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:08:02,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [255710623] [2023-11-29 06:08:02,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [255710623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:08:02,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:08:02,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:08:02,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524863878] [2023-11-29 06:08:02,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:08:02,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:08:02,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:08:02,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:08:02,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:08:02,253 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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 06:08:02,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:08:02,948 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2023-11-29 06:08:02,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:08:02,950 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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 19 [2023-11-29 06:08:02,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:08:02,950 INFO L225 Difference]: With dead ends: 68 [2023-11-29 06:08:02,950 INFO L226 Difference]: Without dead ends: 68 [2023-11-29 06:08:02,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 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 06:08:02,951 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 69 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:08:02,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 124 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 06:08:02,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-29 06:08:02,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2023-11-29 06:08:02,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 46 states have (on average 1.434782608695652) internal successors, (66), 59 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 06:08:02,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2023-11-29 06:08:02,955 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 19 [2023-11-29 06:08:02,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:08:02,955 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2023-11-29 06:08:02,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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 06:08:02,955 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2023-11-29 06:08:02,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-29 06:08:02,956 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:08:02,956 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, 1] [2023-11-29 06:08:02,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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)] Ended with exit code 0 [2023-11-29 06:08:03,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:08:03,157 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:08:03,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:08:03,157 INFO L85 PathProgramCache]: Analyzing trace with hash 2113732586, now seen corresponding path program 1 times [2023-11-29 06:08:03,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:08:03,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1884571392] [2023-11-29 06:08:03,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:08:03,158 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 06:08:03,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:08:03,159 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:08:03,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:08:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:08:03,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 06:08:03,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:08:03,478 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 06:08:03,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:08:06,884 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-29 06:08:06,884 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 06:08:06,900 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-11-29 06:08:06,900 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 06:08:06,931 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 06:08:06,931 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:08:06,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1884571392] [2023-11-29 06:08:06,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1884571392] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:08:06,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:08:06,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2023-11-29 06:08:06,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720843868] [2023-11-29 06:08:06,932 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:08:06,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:08:06,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:08:06,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:08:06,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:08:06,933 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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 06:08:07,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:08:07,707 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2023-11-29 06:08:07,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 06:08:07,708 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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 22 [2023-11-29 06:08:07,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:08:07,709 INFO L225 Difference]: With dead ends: 84 [2023-11-29 06:08:07,709 INFO L226 Difference]: Without dead ends: 84 [2023-11-29 06:08:07,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 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 06:08:07,710 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 44 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:08:07,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 122 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 06:08:07,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-11-29 06:08:07,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 73. [2023-11-29 06:08:07,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 55 states have (on average 1.4727272727272727) internal successors, (81), 68 states have internal predecessors, (81), 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 06:08:07,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 87 transitions. [2023-11-29 06:08:07,713 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 87 transitions. Word has length 22 [2023-11-29 06:08:07,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:08:07,714 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 87 transitions. [2023-11-29 06:08:07,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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 06:08:07,714 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 87 transitions. [2023-11-29 06:08:07,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 06:08:07,715 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:08:07,715 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, 1] [2023-11-29 06:08:07,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:08:07,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:08:07,915 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:08:07,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:08:07,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1101199279, now seen corresponding path program 1 times [2023-11-29 06:08:07,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:08:07,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888761650] [2023-11-29 06:08:07,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:08:07,917 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 06:08:07,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:08:07,918 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:08:07,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:08:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:08:08,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 06:08:08,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:08:08,280 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 06:08:08,295 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 06:08:08,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:08:12,602 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:08:12,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1888761650] [2023-11-29 06:08:12,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1888761650] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:08:12,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [873528514] [2023-11-29 06:08:12,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:08:12,603 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 06:08:12,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 06:08:12,604 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 06:08:12,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2023-11-29 06:08:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:08:12,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 06:08:12,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:08:13,205 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 06:08:13,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:08:17,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [873528514] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:08:17,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:08:17,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2023-11-29 06:08:17,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188585118] [2023-11-29 06:08:17,515 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:08:17,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 06:08:17,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:08:17,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 06:08:17,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=204, Unknown=2, NotChecked=28, Total=272 [2023-11-29 06:08:17,516 INFO L87 Difference]: Start difference. First operand 73 states and 87 transitions. Second operand has 16 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 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 06:08:18,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:08:18,400 INFO L93 Difference]: Finished difference Result 78 states and 91 transitions. [2023-11-29 06:08:18,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 06:08:18,400 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 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 23 [2023-11-29 06:08:18,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:08:18,401 INFO L225 Difference]: With dead ends: 78 [2023-11-29 06:08:18,401 INFO L226 Difference]: Without dead ends: 65 [2023-11-29 06:08:18,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 63 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=66, Invalid=316, Unknown=2, NotChecked=36, Total=420 [2023-11-29 06:08:18,402 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 16 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:08:18,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 181 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 300 Invalid, 0 Unknown, 59 Unchecked, 0.7s Time] [2023-11-29 06:08:18,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-29 06:08:18,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2023-11-29 06:08:18,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 47 states have (on average 1.5319148936170213) internal successors, (72), 60 states have internal predecessors, (72), 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 06:08:18,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2023-11-29 06:08:18,406 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 23 [2023-11-29 06:08:18,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:08:18,406 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2023-11-29 06:08:18,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 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 06:08:18,406 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2023-11-29 06:08:18,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 06:08:18,407 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:08:18,407 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:08:18,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2023-11-29 06:08:18,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:08:18,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:08:18,808 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:08:18,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:08:18,808 INFO L85 PathProgramCache]: Analyzing trace with hash 604058841, now seen corresponding path program 1 times [2023-11-29 06:08:18,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:08:18,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [207589479] [2023-11-29 06:08:18,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:08:18,809 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 06:08:18,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:08:18,809 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:08:18,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:08:18,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:08:18,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 06:08:18,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:08:18,982 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 06:08:18,983 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:08:19,018 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2023-11-29 06:08:19,019 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 06:08:19,040 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 06:08:19,040 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:08:19,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [207589479] [2023-11-29 06:08:19,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [207589479] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:08:19,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:08:19,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2023-11-29 06:08:19,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832676362] [2023-11-29 06:08:19,041 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:08:19,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:08:19,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:08:19,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:08:19,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:08:19,042 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 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 06:08:19,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:08:19,369 INFO L93 Difference]: Finished difference Result 72 states and 87 transitions. [2023-11-29 06:08:19,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:08:19,370 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 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 25 [2023-11-29 06:08:19,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:08:19,370 INFO L225 Difference]: With dead ends: 72 [2023-11-29 06:08:19,370 INFO L226 Difference]: Without dead ends: 72 [2023-11-29 06:08:19,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 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 06:08:19,371 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 9 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:08:19,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 93 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 06:08:19,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-11-29 06:08:19,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2023-11-29 06:08:19,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 52 states have (on average 1.5192307692307692) 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 06:08:19,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 85 transitions. [2023-11-29 06:08:19,375 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 85 transitions. Word has length 25 [2023-11-29 06:08:19,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:08:19,375 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 85 transitions. [2023-11-29 06:08:19,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 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 06:08:19,375 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 85 transitions. [2023-11-29 06:08:19,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 06:08:19,376 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:08:19,376 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:08:19,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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)] Ended with exit code 0 [2023-11-29 06:08:19,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:08:19,577 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:08:19,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:08:19,577 INFO L85 PathProgramCache]: Analyzing trace with hash 604058842, now seen corresponding path program 1 times [2023-11-29 06:08:19,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:08:19,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1748132689] [2023-11-29 06:08:19,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:08:19,577 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 06:08:19,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:08:19,578 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:08:19,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 (25)] Waiting until timeout for monitored process [2023-11-29 06:08:19,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:08:19,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 06:08:19,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:08:19,951 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 06:08:19,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:08:20,299 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:08:20,299 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 06:08:21,050 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 06:08:21,050 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:08:21,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1748132689] [2023-11-29 06:08:21,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1748132689] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:08:21,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:08:21,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-29 06:08:21,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463512956] [2023-11-29 06:08:21,050 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:08:21,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 06:08:21,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:08:21,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 06:08:21,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:08:21,052 INFO L87 Difference]: Start difference. First operand 70 states and 85 transitions. Second operand has 14 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 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 06:08:22,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:08:22,645 INFO L93 Difference]: Finished difference Result 71 states and 86 transitions. [2023-11-29 06:08:22,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:08:22,647 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 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 25 [2023-11-29 06:08:22,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:08:22,648 INFO L225 Difference]: With dead ends: 71 [2023-11-29 06:08:22,648 INFO L226 Difference]: Without dead ends: 71 [2023-11-29 06:08:22,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:08:22,648 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 10 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:08:22,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 234 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 06:08:22,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-11-29 06:08:22,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2023-11-29 06:08:22,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 52 states have (on average 1.5) internal successors, (78), 65 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 06:08:22,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2023-11-29 06:08:22,652 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 25 [2023-11-29 06:08:22,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:08:22,652 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2023-11-29 06:08:22,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 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 06:08:22,652 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2023-11-29 06:08:22,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 06:08:22,653 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:08:22,653 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:08:22,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 (25)] Forceful destruction successful, exit code 0 [2023-11-29 06:08:22,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:08:22,854 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:08:22,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:08:22,854 INFO L85 PathProgramCache]: Analyzing trace with hash 730170175, now seen corresponding path program 1 times [2023-11-29 06:08:22,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:08:22,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1269742923] [2023-11-29 06:08:22,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:08:22,855 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 06:08:22,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:08:22,856 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:08:22,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:08:23,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:08:23,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-29 06:08:23,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:08:23,098 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 06:08:23,160 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 06:08:23,258 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 06:08:23,259 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 06:08:23,325 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 06:08:23,336 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 06:08:23,562 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:08:23,562 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 06:08:23,574 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 06:08:23,765 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:08:23,765 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 06:08:23,790 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 06:08:23,825 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 06:08:23,835 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 06:08:24,011 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 06:08:24,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:08:24,038 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 06:08:24,071 INFO L349 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-11-29 06:08:24,071 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 06:08:24,110 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 06:08:24,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:08:36,696 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:08:36,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1269742923] [2023-11-29 06:08:36,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1269742923] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:08:36,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1490297165] [2023-11-29 06:08:36,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:08:36,697 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 06:08:36,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 06:08:36,698 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 06:08:36,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2023-11-29 06:08:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:08:37,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-29 06:08:37,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:08:37,128 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 06:08:37,159 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 06:08:37,219 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 06:08:37,220 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 06:08:37,252 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 06:08:37,286 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 06:08:37,363 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:08:37,363 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 06:08:37,388 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 06:08:37,462 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:08:37,463 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 06:08:37,471 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 06:08:37,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 20 [2023-11-29 06:08:37,515 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 06:08:37,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:08:37,677 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 06:08:37,711 INFO L349 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-11-29 06:08:37,711 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 06:08:37,717 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 06:08:37,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:08:38,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1490297165] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:08:38,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:08:38,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2023-11-29 06:08:38,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142237959] [2023-11-29 06:08:38,125 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:08:38,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 06:08:38,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:08:38,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 06:08:38,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=4, NotChecked=32, Total=342 [2023-11-29 06:08:38,126 INFO L87 Difference]: Start difference. First operand 70 states and 84 transitions. Second operand has 17 states, 14 states have (on average 1.5) internal successors, (21), 12 states have internal predecessors, (21), 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 06:08:39,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:08:39,493 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2023-11-29 06:08:39,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 06:08:39,495 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 1.5) internal successors, (21), 12 states have internal predecessors, (21), 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 27 [2023-11-29 06:08:39,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:08:39,496 INFO L225 Difference]: With dead ends: 64 [2023-11-29 06:08:39,496 INFO L226 Difference]: Without dead ends: 64 [2023-11-29 06:08:39,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=4, NotChecked=44, Total=600 [2023-11-29 06:08:39,496 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:08:39,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 179 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 308 Invalid, 0 Unknown, 47 Unchecked, 0.9s Time] [2023-11-29 06:08:39,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-29 06:08:39,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-11-29 06:08:39,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 52 states have (on average 1.3846153846153846) internal successors, (72), 59 states have internal predecessors, (72), 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 06:08:39,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 78 transitions. [2023-11-29 06:08:39,499 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 78 transitions. Word has length 27 [2023-11-29 06:08:39,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:08:39,499 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 78 transitions. [2023-11-29 06:08:39,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 1.5) internal successors, (21), 12 states have internal predecessors, (21), 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 06:08:39,499 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 78 transitions. [2023-11-29 06:08:39,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 06:08:39,499 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:08:39,500 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, 1, 1, 1] [2023-11-29 06:08:39,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2023-11-29 06:08:39,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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)] Ended with exit code 0 [2023-11-29 06:08:39,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:08:39,900 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:08:39,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:08:39,901 INFO L85 PathProgramCache]: Analyzing trace with hash 680014819, now seen corresponding path program 1 times [2023-11-29 06:08:39,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:08:39,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1399289269] [2023-11-29 06:08:39,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:08:39,901 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 06:08:39,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:08:39,902 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:08:39,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:08:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:08:40,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-29 06:08:40,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:08:40,100 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 06:08:40,290 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 06:08:40,290 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 06:08:40,366 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 06:08:40,585 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:08:40,585 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 06:08:40,704 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:08:40,705 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 06:08:40,906 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 06:08:40,982 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 06:08:40,982 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:08:49,518 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_820 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_819 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_819))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) (bvadd |c_ULTIMATE.start_create_~now~0#1.offset| (_ bv4 64))) v_ArrVal_820)) |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 06:08:49,546 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_820 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_819 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (let ((.cse1 (bvadd |c_ULTIMATE.start_create_~now~0#1.offset| (_ bv4 64)))) (let ((.cse0 (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) .cse1) v_ArrVal_819))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) .cse1) v_ArrVal_820))) |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 06:08:49,563 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:08:49,563 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 48 treesize of output 39 [2023-11-29 06:08:49,592 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:08:49,593 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 310 treesize of output 267 [2023-11-29 06:08:49,605 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 207 treesize of output 191 [2023-11-29 06:08:49,636 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:08:49,636 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 191 treesize of output 175 [2023-11-29 06:09:12,967 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:09:12,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1399289269] [2023-11-29 06:09:12,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1399289269] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:09:12,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [644304216] [2023-11-29 06:09:12,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:09:12,968 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 06:09:12,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 06:09:12,972 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 06:09:12,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2023-11-29 06:09:13,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:09:13,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-29 06:09:13,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:09:13,321 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 06:09:13,831 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 06:09:13,831 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 06:09:14,003 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 06:09:14,330 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 06:09:14,331 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 06:09:14,523 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 06:09:14,524 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 06:09:14,840 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 06:09:14,917 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 06:09:14,918 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:09:19,140 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_820 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_872 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_872))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) (bvadd |c_ULTIMATE.start_create_~now~0#1.offset| (_ bv4 64))) v_ArrVal_820)) |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 06:09:19,170 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_820 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_872 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (let ((.cse1 (bvadd |c_ULTIMATE.start_create_~now~0#1.offset| (_ bv4 64)))) (let ((.cse0 (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) .cse1) v_ArrVal_872))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) .cse1) v_ArrVal_820))) |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 06:09:19,189 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:09:19,189 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 48 treesize of output 39 [2023-11-29 06:09:19,230 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:09:19,230 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 178 treesize of output 153 [2023-11-29 06:09:19,264 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:09:19,265 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 102 treesize of output 90 [2023-11-29 06:09:19,274 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 82 treesize of output 74 [2023-11-29 06:09:50,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [644304216] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:09:50,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:09:50,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 25 [2023-11-29 06:09:50,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814052613] [2023-11-29 06:09:50,565 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:09:50,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 06:09:50,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:09:50,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 06:09:50,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=925, Unknown=12, NotChecked=260, Total=1332 [2023-11-29 06:09:50,566 INFO L87 Difference]: Start difference. First operand 64 states and 78 transitions. Second operand has 26 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 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 06:09:51,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:09:51,912 INFO L93 Difference]: Finished difference Result 69 states and 85 transitions. [2023-11-29 06:09:51,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 06:09:51,912 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 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 27 [2023-11-29 06:09:51,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:09:51,913 INFO L225 Difference]: With dead ends: 69 [2023-11-29 06:09:51,913 INFO L226 Difference]: Without dead ends: 69 [2023-11-29 06:09:51,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 67.0s TimeCoverageRelationStatistics Valid=163, Invalid=1101, Unknown=12, NotChecked=284, Total=1560 [2023-11-29 06:09:51,914 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 11 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:09:51,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 201 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 06:09:51,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-11-29 06:09:51,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2023-11-29 06:09:51,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 54 states have (on average 1.4074074074074074) internal successors, (76), 61 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 06:09:51,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 82 transitions. [2023-11-29 06:09:51,917 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 82 transitions. Word has length 27 [2023-11-29 06:09:51,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:09:51,917 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 82 transitions. [2023-11-29 06:09:51,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 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 06:09:51,917 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 82 transitions. [2023-11-29 06:09:51,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 06:09:51,918 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:09:51,918 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, 1, 1, 1] [2023-11-29 06:09:51,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:09:52,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2023-11-29 06:09:52,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 06:09:52,319 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:09:52,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:09:52,319 INFO L85 PathProgramCache]: Analyzing trace with hash 680014820, now seen corresponding path program 1 times [2023-11-29 06:09:52,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:09:52,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189347267] [2023-11-29 06:09:52,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:09:52,320 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 06:09:52,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:09:52,320 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:09:52,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:09:52,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:09:52,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 06:09:52,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:09:52,532 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 06:09:52,687 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 06:09:52,811 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 06:09:52,811 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 06:09:52,934 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 06:09:52,950 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 06:09:53,261 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:09:53,262 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 06:09:53,284 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 06:09:53,465 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:09:53,465 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 06:09:53,485 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 06:09:57,799 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 06:09:57,805 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 06:09:57,884 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 06:09:57,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:10:02,919 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 64) |c_ULTIMATE.start_create_~sll~0#1.offset|))) (and (forall ((v_ArrVal_929 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem11#1.base| v_ArrVal_929) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv4 64)) (bvadd .cse0 (_ bv12 64))))) (forall ((v_ArrVal_929 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_928 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem11#1.base| v_ArrVal_929) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1) (_ bv12 64)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem11#1.base| v_ArrVal_928) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1)))))) is different from false [2023-11-29 06:10:03,006 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) (bvadd |c_ULTIMATE.start_create_~now~0#1.offset| (_ bv4 64)))) (.cse2 (bvadd (_ bv4 64) |c_ULTIMATE.start_create_~sll~0#1.offset|))) (and (forall ((v_ArrVal_929 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_929) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 64) .cse0) (bvadd .cse0 (_ bv12 64))))) (forall ((v_ArrVal_929 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_928 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_929) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse2) (_ bv12 64)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| .cse1 v_ArrVal_928) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse2)))))) is different from false [2023-11-29 06:10:03,152 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd |c_ULTIMATE.start_create_~now~0#1.offset| (_ bv4 64))) (.cse1 (bvadd (_ bv4 64) |c_ULTIMATE.start_create_~sll~0#1.offset|))) (and (forall ((v_ArrVal_926 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_929 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_928 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_927 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse2 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_926))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_create_~now~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_927) .cse0 v_ArrVal_929) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1) (_ bv12 64)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_928) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1)))))) (forall ((v_ArrVal_926 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_929 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_927 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_927) (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_926) |c_ULTIMATE.start_create_~now~0#1.base|) .cse3) v_ArrVal_929) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1))) (bvule (bvadd .cse4 (_ bv4 64)) (bvadd .cse4 (_ bv12 64))))))) is different from false [2023-11-29 06:10:03,362 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd |c_ULTIMATE.start_create_~now~0#1.offset| (_ bv4 64)))) (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) .cse4)) (.cse2 (bvadd (_ bv4 64) |c_ULTIMATE.start_create_~sll~0#1.offset|))) (and (forall ((v_ArrVal_926 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_929 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_928 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_927 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse3 (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_926))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_create_~now~0#1.base|) .cse4))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_927) .cse1 v_ArrVal_929) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse2) (_ bv12 64)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_928) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse2)))))) (forall ((v_ArrVal_926 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_929 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_927 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse5 (select (select (store (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_927) (select (select (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_926) |c_ULTIMATE.start_create_~now~0#1.base|) .cse4) v_ArrVal_929) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse2))) (bvule (bvadd .cse5 (_ bv4 64)) (bvadd .cse5 (_ bv12 64)))))))) is different from false [2023-11-29 06:10:03,407 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:10:03,408 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 89 treesize of output 90 [2023-11-29 06:10:03,428 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:10:03,428 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 79 treesize of output 60 [2023-11-29 06:10:03,493 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:10:03,493 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 400 treesize of output 345 [2023-11-29 06:10:03,568 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:10:03,568 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 584 treesize of output 553 [2023-11-29 06:10:03,586 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 218 treesize of output 202 [2023-11-29 06:10:03,632 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:10:03,632 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 202 treesize of output 174 [2023-11-29 06:10:03,641 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 166 treesize of output 150 [2023-11-29 06:10:03,661 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 78 treesize of output 70 [2023-11-29 06:10:18,304 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:10:18,304 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 89 treesize of output 80 [2023-11-29 06:10:18,332 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:10:18,333 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 69 treesize of output 60 [2023-11-29 06:10:18,348 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 102 treesize of output 84 [2023-11-29 06:10:18,474 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:10:18,474 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 286 treesize of output 255 [2023-11-29 06:10:18,553 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 94 treesize of output 86 [2023-11-29 06:10:18,565 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 124 treesize of output 100 [2023-11-29 06:10:18,616 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 70 treesize of output 62 [2023-11-29 06:10:19,508 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:10:19,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189347267] [2023-11-29 06:10:19,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189347267] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:10:19,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1849574106] [2023-11-29 06:10:19,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:10:19,508 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 06:10:19,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 06:10:19,509 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 06:10:19,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2023-11-29 06:10:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:10:19,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-29 06:10:19,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:10:19,900 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 06:10:20,429 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 06:10:20,499 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 06:10:20,499 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 06:10:20,681 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 06:10:20,714 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 06:10:21,087 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 06:10:21,088 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 06:10:21,102 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 06:10:21,348 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 06:10:21,348 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 06:10:21,355 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 06:10:21,784 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 06:10:21,794 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 06:10:21,806 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 06:10:21,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:10:22,051 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv4 64) |c_ULTIMATE.start_create_~sll~0#1.offset|))) (and (forall ((v_ArrVal_985 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_984 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem11#1.base| v_ArrVal_984) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse0) (_ bv12 64)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem11#1.base| v_ArrVal_985) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse0)))) (forall ((v_ArrVal_984 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem11#1.base| v_ArrVal_984) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse0))) (bvule (bvadd .cse1 (_ bv4 64)) (bvadd .cse1 (_ bv12 64))))))) is different from false [2023-11-29 06:10:22,146 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) (bvadd |c_ULTIMATE.start_create_~now~0#1.offset| (_ bv4 64)))) (.cse1 (bvadd (_ bv4 64) |c_ULTIMATE.start_create_~sll~0#1.offset|))) (and (forall ((v_ArrVal_985 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_984 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_984) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1) (_ bv12 64)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_985) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1)))) (forall ((v_ArrVal_984 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_984) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 64) .cse2) (bvadd .cse2 (_ bv12 64))))))) is different from false [2023-11-29 06:10:22,240 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv4 64) |c_ULTIMATE.start_create_~sll~0#1.offset|)) (.cse1 (bvadd |c_ULTIMATE.start_create_~now~0#1.offset| (_ bv4 64)))) (and (forall ((v_ArrVal_984 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_983 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_982 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_983) (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_982) |c_ULTIMATE.start_create_~now~0#1.base|) .cse1) v_ArrVal_984) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv4 64)) (bvadd .cse0 (_ bv12 64))))) (forall ((v_ArrVal_985 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_984 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_983 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_982 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse4 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_982))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_create_~now~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_983) .cse3 v_ArrVal_984) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse2) (_ bv12 64)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_985) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse2)))))))) is different from false [2023-11-29 06:10:22,367 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd |c_ULTIMATE.start_create_~now~0#1.offset| (_ bv4 64)))) (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) .cse4)) (.cse2 (bvadd (_ bv4 64) |c_ULTIMATE.start_create_~sll~0#1.offset|))) (and (forall ((v_ArrVal_985 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_984 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_983 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_982 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse3 (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_982))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_create_~now~0#1.base|) .cse4))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_983) .cse1 v_ArrVal_984) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse2) (_ bv12 64)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_985) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse2)))))) (forall ((v_ArrVal_984 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_983 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_982 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse5 (select (select (store (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_983) (select (select (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_982) |c_ULTIMATE.start_create_~now~0#1.base|) .cse4) v_ArrVal_984) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse2))) (bvule (bvadd .cse5 (_ bv4 64)) (bvadd .cse5 (_ bv12 64)))))))) is different from false [2023-11-29 06:10:22,411 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:10:22,411 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 89 treesize of output 80 [2023-11-29 06:10:22,433 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:10:22,434 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 69 treesize of output 60 [2023-11-29 06:10:22,442 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 102 treesize of output 84 [2023-11-29 06:10:22,548 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:10:22,548 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 286 treesize of output 255 [2023-11-29 06:10:22,623 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 94 treesize of output 86 [2023-11-29 06:10:22,631 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 124 treesize of output 100 [2023-11-29 06:10:22,674 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 70 treesize of output 62 [2023-11-29 06:10:23,013 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:10:23,013 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 89 treesize of output 90 [2023-11-29 06:10:23,045 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:10:23,045 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 79 treesize of output 60 [2023-11-29 06:10:23,053 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 06:10:23,054 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 06:10:23,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:10:23,065 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 92 treesize of output 56 [2023-11-29 06:10:23,072 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 06:10:23,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:10:23,081 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 06:10:23,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1849574106] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:10:23,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:10:23,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 25 [2023-11-29 06:10:23,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485346137] [2023-11-29 06:10:23,396 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:10:23,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 06:10:23,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:10:23,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 06:10:23,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=842, Unknown=10, NotChecked=520, Total=1482 [2023-11-29 06:10:23,398 INFO L87 Difference]: Start difference. First operand 66 states and 82 transitions. Second operand has 26 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 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 06:10:25,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:10:25,501 INFO L93 Difference]: Finished difference Result 68 states and 84 transitions. [2023-11-29 06:10:25,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 06:10:25,501 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 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 27 [2023-11-29 06:10:25,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:10:25,502 INFO L225 Difference]: With dead ends: 68 [2023-11-29 06:10:25,502 INFO L226 Difference]: Without dead ends: 68 [2023-11-29 06:10:25,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=160, Invalid=1122, Unknown=10, NotChecked=600, Total=1892 [2023-11-29 06:10:25,503 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 11 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:10:25,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 345 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 06:10:25,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-29 06:10:25,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2023-11-29 06:10:25,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 54 states have (on average 1.3888888888888888) internal successors, (75), 61 states have internal predecessors, (75), 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 06:10:25,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 81 transitions. [2023-11-29 06:10:25,507 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 81 transitions. Word has length 27 [2023-11-29 06:10:25,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:10:25,507 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 81 transitions. [2023-11-29 06:10:25,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 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 06:10:25,508 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 81 transitions. [2023-11-29 06:10:25,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-29 06:10:25,508 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:10:25,508 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 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 06:10:25,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2023-11-29 06:10:25,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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)] Ended with exit code 0 [2023-11-29 06:10:25,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:10:25,909 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:10:25,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:10:25,909 INFO L85 PathProgramCache]: Analyzing trace with hash 657790651, now seen corresponding path program 1 times [2023-11-29 06:10:25,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:10:25,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1911144834] [2023-11-29 06:10:25,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:10:25,910 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 06:10:25,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:10:25,911 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:10:25,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:10:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:10:26,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 06:10:26,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:10:26,166 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:10:26,166 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:10:26,223 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2023-11-29 06:10:26,224 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 06:10:26,249 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:10:26,250 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:10:26,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1911144834] [2023-11-29 06:10:26,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1911144834] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:10:26,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:10:26,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-11-29 06:10:26,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969016275] [2023-11-29 06:10:26,250 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:10:26,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:10:26,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:10:26,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:10:26,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:10:26,252 INFO L87 Difference]: Start difference. First operand 66 states and 81 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 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 06:10:26,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:10:26,684 INFO L93 Difference]: Finished difference Result 85 states and 104 transitions. [2023-11-29 06:10:26,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:10:26,684 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 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 29 [2023-11-29 06:10:26,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:10:26,685 INFO L225 Difference]: With dead ends: 85 [2023-11-29 06:10:26,685 INFO L226 Difference]: Without dead ends: 85 [2023-11-29 06:10:26,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:10:26,686 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 26 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:10:26,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 72 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 06:10:26,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-11-29 06:10:26,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 74. [2023-11-29 06:10:26,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 69 states have internal predecessors, (88), 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 06:10:26,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2023-11-29 06:10:26,689 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 29 [2023-11-29 06:10:26,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:10:26,689 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2023-11-29 06:10:26,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 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 06:10:26,689 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2023-11-29 06:10:26,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-29 06:10:26,690 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:10:26,690 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 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 06:10:26,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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)] Ended with exit code 0 [2023-11-29 06:10:26,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:10:26,890 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:10:26,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:10:26,891 INFO L85 PathProgramCache]: Analyzing trace with hash 657790652, now seen corresponding path program 1 times [2023-11-29 06:10:26,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:10:26,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012414866] [2023-11-29 06:10:26,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:10:26,891 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 06:10:26,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:10:26,892 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:10:26,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 (33)] Waiting until timeout for monitored process [2023-11-29 06:10:27,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:10:27,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 06:10:27,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:10:27,385 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 06:10:27,385 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:10:28,161 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:10:28,161 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 06:10:29,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 06:10:29,271 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:10:29,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012414866] [2023-11-29 06:10:29,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2012414866] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:10:29,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:10:29,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-29 06:10:29,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641892402] [2023-11-29 06:10:29,272 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:10:29,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 06:10:29,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:10:29,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 06:10:29,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:10:29,273 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand has 16 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 14 states have internal predecessors, (47), 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 06:10:32,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:10:32,141 INFO L93 Difference]: Finished difference Result 95 states and 112 transitions. [2023-11-29 06:10:32,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:10:32,143 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 14 states have internal predecessors, (47), 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 29 [2023-11-29 06:10:32,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:10:32,143 INFO L225 Difference]: With dead ends: 95 [2023-11-29 06:10:32,143 INFO L226 Difference]: Without dead ends: 95 [2023-11-29 06:10:32,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2023-11-29 06:10:32,144 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 57 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:10:32,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 142 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-29 06:10:32,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-11-29 06:10:32,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 76. [2023-11-29 06:10:32,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 64 states have (on average 1.375) internal successors, (88), 71 states have internal predecessors, (88), 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 06:10:32,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 94 transitions. [2023-11-29 06:10:32,147 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 94 transitions. Word has length 29 [2023-11-29 06:10:32,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:10:32,147 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 94 transitions. [2023-11-29 06:10:32,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 14 states have internal predecessors, (47), 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 06:10:32,148 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 94 transitions. [2023-11-29 06:10:32,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-29 06:10:32,148 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:10:32,148 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, 1, 1, 1] [2023-11-29 06:10:32,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 (33)] Ended with exit code 0 [2023-11-29 06:10:32,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:10:32,349 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:10:32,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:10:32,349 INFO L85 PathProgramCache]: Analyzing trace with hash 659265645, now seen corresponding path program 2 times [2023-11-29 06:10:32,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:10:32,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1479231706] [2023-11-29 06:10:32,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:10:32,350 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 06:10:32,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:10:32,350 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 06:10:32,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fedbf0fc-c106-42ab-9ea7-1617bcc7630d/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 (34)] Waiting until timeout for monitored process [2023-11-29 06:10:32,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:10:32,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:10:32,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-29 06:10:32,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:10:32,666 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 06:10:32,916 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 06:10:32,928 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 06:10:33,036 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 06:10:33,036 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 06:10:33,156 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 06:10:33,173 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 06:10:33,447 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-29 06:10:33,447 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 06:10:33,455 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 06:10:33,619 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-29 06:10:33,619 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 06:10:33,638 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 06:10:34,176 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 06:10:34,176 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:10:34,856 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem11#1.base|)) (.cse3 (bvadd (_ bv4 64) |c_ULTIMATE.start_create_~sll~0#1.offset|)) (.cse4 (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem11#1.base|)) (.cse1 (bvadd |c_ULTIMATE.start_create_#t~mem11#1.offset| (_ bv12 64)))) (and (forall ((v_ArrVal_1133 (Array (_ BitVec 64) (_ BitVec 64)))) (or (forall ((v_ArrVal_1134 (Array (_ BitVec 64) (_ BitVec 64)))) (or (not (= v_ArrVal_1134 (store .cse0 .cse1 (select v_ArrVal_1134 .cse1)))) (= (_ bv0 64) (select (let ((.cse2 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem11#1.base| v_ArrVal_1133))) (select .cse2 (select (select .cse2 |c_ULTIMATE.start_create_~sll~0#1.base|) .cse3))) (bvadd (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem11#1.base| v_ArrVal_1134) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse3) (_ bv4 64)))))) (not (= v_ArrVal_1133 (store .cse4 .cse1 (select v_ArrVal_1133 .cse1)))))) (forall ((v_ArrVal_1133 (Array (_ BitVec 64) (_ BitVec 64)))) (or (forall ((v_ArrVal_1134 (Array (_ BitVec 64) (_ BitVec 64)))) (or (not (= v_ArrVal_1134 (store .cse0 .cse1 (select v_ArrVal_1134 .cse1)))) (= (_ bv0 64) (let ((.cse5 (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem11#1.base| v_ArrVal_1134))) (select (select .cse5 (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem11#1.base| v_ArrVal_1133) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse3)) (bvadd (select (select .cse5 |c_ULTIMATE.start_create_~sll~0#1.base|) .cse3) (_ bv4 64))))))) (not (= v_ArrVal_1133 (store .cse4 .cse1 (select v_ArrVal_1133 .cse1)))))))) is different from false [2023-11-29 06:10:35,020 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse7 (bvadd |c_ULTIMATE.start_create_~now~0#1.offset| (_ bv4 64)))) (let ((.cse2 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) .cse7))) (let ((.cse1 (bvadd (_ bv4 64) |c_ULTIMATE.start_create_~sll~0#1.offset|)) (.cse3 (select |c_#memory_$Pointer$#0.offset| .cse2)) (.cse5 (select |c_#memory_$Pointer$#0.base| .cse2)) (.cse4 (bvadd (select (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~0#1.base|) .cse7) (_ bv12 64)))) (and (forall ((v_ArrVal_1133 (Array (_ BitVec 64) (_ BitVec 64)))) (or (forall ((v_ArrVal_1134 (Array (_ BitVec 64) (_ BitVec 64)))) (or (= (_ bv0 64) (select (let ((.cse0 (store |c_#memory_$Pointer$#0.base| .cse2 v_ArrVal_1133))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1))) (bvadd (_ bv4 64) (select (select (store |c_#memory_$Pointer$#0.offset| .cse2 v_ArrVal_1134) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1)))) (not (= v_ArrVal_1134 (store .cse3 .cse4 (select v_ArrVal_1134 .cse4)))))) (not (= v_ArrVal_1133 (store .cse5 .cse4 (select v_ArrVal_1133 .cse4)))))) (forall ((v_ArrVal_1133 (Array (_ BitVec 64) (_ BitVec 64)))) (or (forall ((v_ArrVal_1134 (Array (_ BitVec 64) (_ BitVec 64)))) (or (= (_ bv0 64) (let ((.cse6 (store |c_#memory_$Pointer$#0.offset| .cse2 v_ArrVal_1134))) (select (select .cse6 (select (select (store |c_#memory_$Pointer$#0.base| .cse2 v_ArrVal_1133) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1)) (bvadd (_ bv4 64) (select (select .cse6 |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1))))) (not (= v_ArrVal_1134 (store .cse3 .cse4 (select v_ArrVal_1134 .cse4)))))) (not (= v_ArrVal_1133 (store .cse5 .cse4 (select v_ArrVal_1133 .cse4)))))))))) is different from false [2023-11-29 06:11:41,791 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse8 (bvadd |c_ULTIMATE.start_create_~now~0#1.offset| (_ bv4 64)))) (let ((.cse9 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) .cse8))) (let ((.cse10 (select |c_#memory_$Pointer$#0.base| .cse9)) (.cse0 (select |c_#memory_$Pointer$#0.offset| .cse9)) (.cse1 (select (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~0#1.base|) .cse8)) (.cse6 (bvadd (_ bv4 64) |c_ULTIMATE.start_create_~sll~0#1.offset|))) (and (forall ((v_ArrVal_1131 (Array (_ BitVec 64) (_ BitVec 64)))) (or (forall ((v_ArrVal_1132 (Array (_ BitVec 64) (_ BitVec 64)))) (or (not (= v_ArrVal_1132 (store .cse0 .cse1 (select v_ArrVal_1132 .cse1)))) (forall ((v_ArrVal_1133 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse7 (store |c_#memory_$Pointer$#0.offset| .cse9 v_ArrVal_1132)) (.cse2 (store |c_#memory_$Pointer$#0.base| .cse9 v_ArrVal_1131))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_create_~now~0#1.base|) .cse8)) (.cse4 (bvadd (select (select .cse7 |c_ULTIMATE.start_create_~now~0#1.base|) .cse8) (_ bv12 64)))) (or (not (= v_ArrVal_1133 (store (select .cse2 .cse3) .cse4 (select v_ArrVal_1133 .cse4)))) (forall ((v_ArrVal_1134 (Array (_ BitVec 64) (_ BitVec 64)))) (or (= (_ bv0 64) (select (let ((.cse5 (store .cse2 .cse3 v_ArrVal_1133))) (select .cse5 (select (select .cse5 |c_ULTIMATE.start_create_~sll~0#1.base|) .cse6))) (bvadd (_ bv4 64) (select (select (store .cse7 .cse3 v_ArrVal_1134) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse6)))) (not (= (store (select .cse7 .cse3) .cse4 (select v_ArrVal_1134 .cse4)) v_ArrVal_1134)))))))))) (not (= v_ArrVal_1131 (store .cse10 .cse1 (select v_ArrVal_1131 .cse1)))))) (forall ((v_ArrVal_1131 (Array (_ BitVec 64) (_ BitVec 64)))) (or (not (= v_ArrVal_1131 (store .cse10 .cse1 (select v_ArrVal_1131 .cse1)))) (forall ((v_ArrVal_1132 (Array (_ BitVec 64) (_ BitVec 64)))) (or (not (= v_ArrVal_1132 (store .cse0 .cse1 (select v_ArrVal_1132 .cse1)))) (forall ((v_ArrVal_1133 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse15 (store |c_#memory_$Pointer$#0.offset| .cse9 v_ArrVal_1132)) (.cse11 (store |c_#memory_$Pointer$#0.base| .cse9 v_ArrVal_1131))) (let ((.cse12 (select (select .cse11 |c_ULTIMATE.start_create_~now~0#1.base|) .cse8)) (.cse13 (bvadd (select (select .cse15 |c_ULTIMATE.start_create_~now~0#1.base|) .cse8) (_ bv12 64)))) (or (not (= v_ArrVal_1133 (store (select .cse11 .cse12) .cse13 (select v_ArrVal_1133 .cse13)))) (forall ((v_ArrVal_1134 (Array (_ BitVec 64) (_ BitVec 64)))) (or (= (_ bv0 64) (let ((.cse14 (store .cse15 .cse12 v_ArrVal_1134))) (select (select .cse14 (select (select (store .cse11 .cse12 v_ArrVal_1133) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse6)) (bvadd (_ bv4 64) (select (select .cse14 |c_ULTIMATE.start_create_~sll~0#1.base|) .cse6))))) (not (= (store (select .cse15 .cse12) .cse13 (select v_ArrVal_1134 .cse13)) v_ArrVal_1134)))))))))))))))) is different from false [2023-11-29 06:11:48,003 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse8 (bvadd |c_ULTIMATE.start_create_~now~0#1.offset| (_ bv4 64)))) (let ((.cse9 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base| (store (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) .cse8 |c_ULTIMATE.start_create_#t~ret8#1.base|))) (.cse10 (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~0#1.base| (store (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~0#1.base|) .cse8 |c_ULTIMATE.start_create_#t~ret8#1.offset|)))) (let ((.cse6 (bvadd (_ bv4 64) |c_ULTIMATE.start_create_~sll~0#1.offset|)) (.cse1 (select .cse10 |c_ULTIMATE.start_create_#t~ret8#1.base|)) (.cse0 (select .cse9 |c_ULTIMATE.start_create_#t~ret8#1.base|))) (and (forall ((v_ArrVal_1131 (Array (_ BitVec 64) (_ BitVec 64)))) (or (not (= v_ArrVal_1131 (store .cse0 |c_ULTIMATE.start_create_#t~ret8#1.offset| (select v_ArrVal_1131 |c_ULTIMATE.start_create_#t~ret8#1.offset|)))) (forall ((v_ArrVal_1132 (Array (_ BitVec 64) (_ BitVec 64)))) (or (not (= (store .cse1 |c_ULTIMATE.start_create_#t~ret8#1.offset| (select v_ArrVal_1132 |c_ULTIMATE.start_create_#t~ret8#1.offset|)) v_ArrVal_1132)) (forall ((v_ArrVal_1133 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse2 (store .cse10 |c_ULTIMATE.start_create_#t~ret8#1.base| v_ArrVal_1132)) (.cse7 (store .cse9 |c_ULTIMATE.start_create_#t~ret8#1.base| v_ArrVal_1131))) (let ((.cse3 (select (select .cse7 |c_ULTIMATE.start_create_~now~0#1.base|) .cse8)) (.cse4 (bvadd (select (select .cse2 |c_ULTIMATE.start_create_~now~0#1.base|) .cse8) (_ bv12 64)))) (or (forall ((v_ArrVal_1134 (Array (_ BitVec 64) (_ BitVec 64)))) (or (not (= v_ArrVal_1134 (store (select .cse2 .cse3) .cse4 (select v_ArrVal_1134 .cse4)))) (= (_ bv0 64) (select (let ((.cse5 (store .cse7 .cse3 v_ArrVal_1133))) (select .cse5 (select (select .cse5 |c_ULTIMATE.start_create_~sll~0#1.base|) .cse6))) (bvadd (select (select (store .cse2 .cse3 v_ArrVal_1134) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse6) (_ bv4 64)))))) (not (= v_ArrVal_1133 (store (select .cse7 .cse3) .cse4 (select v_ArrVal_1133 .cse4)))))))))))) (forall ((v_ArrVal_1131 (Array (_ BitVec 64) (_ BitVec 64)))) (or (forall ((v_ArrVal_1132 (Array (_ BitVec 64) (_ BitVec 64)))) (or (forall ((v_ArrVal_1133 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse11 (store .cse9 |c_ULTIMATE.start_create_#t~ret8#1.base| v_ArrVal_1131)) (.cse14 (store .cse10 |c_ULTIMATE.start_create_#t~ret8#1.base| v_ArrVal_1132))) (let ((.cse13 (bvadd (select (select .cse14 |c_ULTIMATE.start_create_~now~0#1.base|) .cse8) (_ bv12 64))) (.cse12 (select (select .cse11 |c_ULTIMATE.start_create_~now~0#1.base|) .cse8))) (or (not (= v_ArrVal_1133 (store (select .cse11 .cse12) .cse13 (select v_ArrVal_1133 .cse13)))) (forall ((v_ArrVal_1134 (Array (_ BitVec 64) (_ BitVec 64)))) (or (not (= v_ArrVal_1134 (store (select .cse14 .cse12) .cse13 (select v_ArrVal_1134 .cse13)))) (= (_ bv0 64) (let ((.cse15 (store .cse14 .cse12 v_ArrVal_1134))) (select (select .cse15 (select (select (store .cse11 .cse12 v_ArrVal_1133) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse6)) (bvadd (select (select .cse15 |c_ULTIMATE.start_create_~sll~0#1.base|) .cse6) (_ bv4 64))))))))))) (not (= (store .cse1 |c_ULTIMATE.start_create_#t~ret8#1.offset| (select v_ArrVal_1132 |c_ULTIMATE.start_create_#t~ret8#1.offset|)) v_ArrVal_1132)))) (not (= v_ArrVal_1131 (store .cse0 |c_ULTIMATE.start_create_#t~ret8#1.offset| (select v_ArrVal_1131 |c_ULTIMATE.start_create_#t~ret8#1.offset|)))))))))) is different from false [2023-11-29 06:12:53,316 WARN L293 SmtUtils]: Spent 1.05m on a formula simplification. DAG size of input: 111 DAG size of output: 75 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-29 06:12:53,316 INFO L349 Elim1Store]: treesize reduction 655, result has 39.0 percent of original size [2023-11-29 06:12:53,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 16 case distinctions, treesize of input 44716 treesize of output 42407 [2023-11-29 06:14:06,441 WARN L293 SmtUtils]: Spent 1.21m on a formula simplification. DAG size of input: 199 DAG size of output: 94 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-29 06:14:06,441 INFO L349 Elim1Store]: treesize reduction 387, result has 33.0 percent of original size [2023-11-29 06:14:06,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 37 case distinctions, treesize of input 405004 treesize of output 382653 [2023-11-29 06:14:12,423 INFO L224 Elim1Store]: Index analysis took 1447 ms [2023-11-29 06:15:17,101 WARN L293 SmtUtils]: Spent 1.08m on a formula simplification. DAG size of input: 241 DAG size of output: 105 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-29 06:15:17,101 INFO L349 Elim1Store]: treesize reduction 524, result has 29.9 percent of original size [2023-11-29 06:15:17,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 11 new quantified variables, introduced 46 case distinctions, treesize of input 16092 treesize of output 16071 [2023-11-29 06:15:19,032 INFO L224 Elim1Store]: Index analysis took 1046 ms