./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-memleak_nexttime.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-memleak_nexttime.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0176377c3fa036d8b42b70bf41d842353f196a854b997aa0bf5f176a7ad1942b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:42:04,095 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:42:04,185 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-09 05:42:04,195 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:42:04,195 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:42:04,243 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:42:04,244 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:42:04,245 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:42:04,246 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:42:04,248 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:42:04,249 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:42:04,249 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:42:04,250 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:42:04,250 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:42:04,251 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:42:04,253 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:42:04,254 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:42:04,254 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:42:04,255 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:42:04,255 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:42:04,256 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:42:04,260 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:42:04,261 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 05:42:04,261 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 05:42:04,262 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:42:04,262 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:42:04,263 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:42:04,263 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:42:04,263 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:42:04,265 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 05:42:04,265 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 05:42:04,265 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 05:42:04,266 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:42:04,266 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 05:42:04,266 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:42:04,267 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 05:42:04,267 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:42:04,267 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:42:04,269 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:42:04,270 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:42:04,270 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:42:04,270 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:42:04,271 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:42:04,271 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:42:04,271 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:42:04,272 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:42:04,272 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:42:04,272 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:42:04,273 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:42:04,273 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0176377c3fa036d8b42b70bf41d842353f196a854b997aa0bf5f176a7ad1942b [2024-11-09 05:42:04,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:42:04,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:42:04,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:42:04,675 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:42:04,675 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:42:04,677 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/memsafety/test-memleak_nexttime.i Unable to find full path for "g++" [2024-11-09 05:42:07,091 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:42:07,503 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:42:07,503 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/sv-benchmarks/c/memsafety/test-memleak_nexttime.i [2024-11-09 05:42:07,523 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/data/1186f9a7c/8a82d06e02704af0bbf1fbcb4826b151/FLAGd24c1db64 [2024-11-09 05:42:07,694 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/data/1186f9a7c/8a82d06e02704af0bbf1fbcb4826b151 [2024-11-09 05:42:07,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:42:07,705 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:42:07,707 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:42:07,709 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:42:07,717 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:42:07,718 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:42:07" (1/1) ... [2024-11-09 05:42:07,719 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60999910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:42:07, skipping insertion in model container [2024-11-09 05:42:07,721 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:42:07" (1/1) ... [2024-11-09 05:42:07,807 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:42:08,327 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 05:42:08,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:42:08,361 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:42:08,444 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:42:08,495 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:42:08,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:42:08 WrapperNode [2024-11-09 05:42:08,496 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:42:08,498 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:42:08,498 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:42:08,498 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:42:08,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:42:08" (1/1) ... [2024-11-09 05:42:08,527 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:42:08" (1/1) ... [2024-11-09 05:42:08,552 INFO L138 Inliner]: procedures = 181, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2024-11-09 05:42:08,554 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:42:08,555 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:42:08,555 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:42:08,555 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:42:08,567 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:42:08" (1/1) ... [2024-11-09 05:42:08,567 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:42:08" (1/1) ... [2024-11-09 05:42:08,571 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:42:08" (1/1) ... [2024-11-09 05:42:08,572 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:42:08" (1/1) ... [2024-11-09 05:42:08,580 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:42:08" (1/1) ... [2024-11-09 05:42:08,584 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:42:08" (1/1) ... [2024-11-09 05:42:08,585 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:42:08" (1/1) ... [2024-11-09 05:42:08,587 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:42:08" (1/1) ... [2024-11-09 05:42:08,590 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:42:08,591 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:42:08,591 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:42:08,592 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:42:08,593 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:42:08" (1/1) ... [2024-11-09 05:42:08,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:42:08,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:42:08,642 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:42:08,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:42:08,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-09 05:42:08,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2024-11-09 05:42:08,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-09 05:42:08,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2024-11-09 05:42:08,691 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2024-11-09 05:42:08,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 05:42:08,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:42:08,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 05:42:08,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 05:42:08,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 05:42:08,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 05:42:08,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:42:08,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2024-11-09 05:42:08,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:42:08,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:42:08,851 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:42:08,853 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:42:08,861 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-09 05:42:09,167 INFO L? ?]: Removed 32 outVars from TransFormulas that were not future-live. [2024-11-09 05:42:09,169 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:42:09,240 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:42:09,241 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 05:42:09,242 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:42:09 BoogieIcfgContainer [2024-11-09 05:42:09,242 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:42:09,245 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:42:09,246 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:42:09,252 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:42:09,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:42:07" (1/3) ... [2024-11-09 05:42:09,253 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@206201d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:42:09, skipping insertion in model container [2024-11-09 05:42:09,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:42:08" (2/3) ... [2024-11-09 05:42:09,254 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@206201d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:42:09, skipping insertion in model container [2024-11-09 05:42:09,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:42:09" (3/3) ... [2024-11-09 05:42:09,256 INFO L112 eAbstractionObserver]: Analyzing ICFG test-memleak_nexttime.i [2024-11-09 05:42:09,281 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:42:09,282 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-11-09 05:42:09,360 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:42:09,371 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1488b21e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:42:09,371 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-09 05:42:09,381 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 13 states have (on average 2.076923076923077) internal successors, (27), 25 states have internal predecessors, (27), 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) [2024-11-09 05:42:09,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-11-09 05:42:09,434 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:09,435 INFO L215 NwaCegarLoop]: trace histogram [1, 1] [2024-11-09 05:42:09,435 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 05:42:09,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:09,455 INFO L85 PathProgramCache]: Analyzing trace with hash 2592, now seen corresponding path program 1 times [2024-11-09 05:42:09,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:42:09,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082605207] [2024-11-09 05:42:09,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:09,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:42:09,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:09,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:42:09,951 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:42:09,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082605207] [2024-11-09 05:42:09,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082605207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:42:09,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:42:09,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 05:42:09,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199654085] [2024-11-09 05:42:09,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:42:09,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:42:09,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:42:10,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:42:10,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:42:10,005 INFO L87 Difference]: Start difference. First operand has 29 states, 13 states have (on average 2.076923076923077) internal successors, (27), 25 states have internal predecessors, (27), 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 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:10,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:10,096 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2024-11-09 05:42:10,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:42:10,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2024-11-09 05:42:10,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:10,116 INFO L225 Difference]: With dead ends: 32 [2024-11-09 05:42:10,117 INFO L226 Difference]: Without dead ends: 31 [2024-11-09 05:42:10,121 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:42:10,126 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 10 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:42:10,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 33 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:42:10,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-09 05:42:10,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-09 05:42:10,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 16 states have (on average 1.875) internal successors, (30), 26 states have internal predecessors, (30), 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) [2024-11-09 05:42:10,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2024-11-09 05:42:10,176 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 2 [2024-11-09 05:42:10,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:10,178 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2024-11-09 05:42:10,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:10,178 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2024-11-09 05:42:10,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-11-09 05:42:10,179 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:10,179 INFO L215 NwaCegarLoop]: trace histogram [1, 1] [2024-11-09 05:42:10,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:42:10,180 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 05:42:10,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:10,181 INFO L85 PathProgramCache]: Analyzing trace with hash 2593, now seen corresponding path program 1 times [2024-11-09 05:42:10,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:42:10,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623329697] [2024-11-09 05:42:10,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:10,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:42:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:10,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:42:10,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:42:10,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623329697] [2024-11-09 05:42:10,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623329697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:42:10,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:42:10,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 05:42:10,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916533302] [2024-11-09 05:42:10,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:42:10,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:42:10,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:42:10,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:42:10,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:42:10,279 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:10,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:10,318 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2024-11-09 05:42:10,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:42:10,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2024-11-09 05:42:10,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:10,322 INFO L225 Difference]: With dead ends: 30 [2024-11-09 05:42:10,322 INFO L226 Difference]: Without dead ends: 30 [2024-11-09 05:42:10,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:42:10,325 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 1 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:42:10,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 36 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:42:10,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-09 05:42:10,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-09 05:42:10,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 16 states have (on average 1.8125) internal successors, (29), 25 states have internal predecessors, (29), 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) [2024-11-09 05:42:10,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-11-09 05:42:10,340 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 2 [2024-11-09 05:42:10,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:10,341 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-11-09 05:42:10,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:10,342 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-11-09 05:42:10,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-11-09 05:42:10,342 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:10,342 INFO L215 NwaCegarLoop]: trace histogram [1, 1] [2024-11-09 05:42:10,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:42:10,344 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 05:42:10,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:10,349 INFO L85 PathProgramCache]: Analyzing trace with hash 2594, now seen corresponding path program 1 times [2024-11-09 05:42:10,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:42:10,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493783174] [2024-11-09 05:42:10,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:10,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:42:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:10,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:42:10,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:42:10,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493783174] [2024-11-09 05:42:10,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493783174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:42:10,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:42:10,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 05:42:10,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592919825] [2024-11-09 05:42:10,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:42:10,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:42:10,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:42:10,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:42:10,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:42:10,590 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:10,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:10,637 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2024-11-09 05:42:10,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:42:10,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2024-11-09 05:42:10,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:10,640 INFO L225 Difference]: With dead ends: 28 [2024-11-09 05:42:10,640 INFO L226 Difference]: Without dead ends: 28 [2024-11-09 05:42:10,640 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:42:10,642 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:42:10,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 15 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:42:10,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-09 05:42:10,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-09 05:42:10,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 16 states have (on average 1.6875) internal successors, (27), 23 states have internal predecessors, (27), 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) [2024-11-09 05:42:10,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2024-11-09 05:42:10,648 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 2 [2024-11-09 05:42:10,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:10,649 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2024-11-09 05:42:10,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:10,649 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2024-11-09 05:42:10,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-11-09 05:42:10,650 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:10,650 INFO L215 NwaCegarLoop]: trace histogram [1, 1] [2024-11-09 05:42:10,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:42:10,650 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 05:42:10,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:10,651 INFO L85 PathProgramCache]: Analyzing trace with hash 2595, now seen corresponding path program 1 times [2024-11-09 05:42:10,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:42:10,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20451109] [2024-11-09 05:42:10,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:10,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:42:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:10,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:42:10,752 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:42:10,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20451109] [2024-11-09 05:42:10,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20451109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:42:10,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:42:10,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 05:42:10,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757523717] [2024-11-09 05:42:10,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:42:10,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:42:10,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:42:10,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:42:10,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:42:10,755 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:10,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:10,796 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2024-11-09 05:42:10,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:42:10,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2024-11-09 05:42:10,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:10,801 INFO L225 Difference]: With dead ends: 27 [2024-11-09 05:42:10,801 INFO L226 Difference]: Without dead ends: 27 [2024-11-09 05:42:10,801 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:42:10,803 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:42:10,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 37 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:42:10,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-09 05:42:10,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-09 05:42:10,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 22 states have internal predecessors, (26), 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) [2024-11-09 05:42:10,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2024-11-09 05:42:10,816 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 2 [2024-11-09 05:42:10,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:10,817 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2024-11-09 05:42:10,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:10,817 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-11-09 05:42:10,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 05:42:10,818 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:10,818 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:42:10,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:42:10,819 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 05:42:10,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:10,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1346757492, now seen corresponding path program 1 times [2024-11-09 05:42:10,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:42:10,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078230493] [2024-11-09 05:42:10,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:10,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:42:10,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:10,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:42:10,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:42:10,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078230493] [2024-11-09 05:42:10,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078230493] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:42:10,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:42:10,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:42:10,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880944104] [2024-11-09 05:42:10,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:42:10,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:42:10,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:42:10,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:42:10,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:42:10,997 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2024-11-09 05:42:11,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:11,062 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2024-11-09 05:42:11,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:42:11,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 8 [2024-11-09 05:42:11,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:11,065 INFO L225 Difference]: With dead ends: 25 [2024-11-09 05:42:11,067 INFO L226 Difference]: Without dead ends: 25 [2024-11-09 05:42:11,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:42:11,069 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 8 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:42:11,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 18 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:42:11,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-09 05:42:11,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-09 05:42:11,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.6) internal successors, (24), 20 states have internal predecessors, (24), 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) [2024-11-09 05:42:11,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-11-09 05:42:11,083 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 8 [2024-11-09 05:42:11,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:11,083 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-11-09 05:42:11,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2024-11-09 05:42:11,084 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-11-09 05:42:11,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 05:42:11,084 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:11,084 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:42:11,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 05:42:11,085 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 05:42:11,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:11,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1346757493, now seen corresponding path program 1 times [2024-11-09 05:42:11,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:42:11,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284340748] [2024-11-09 05:42:11,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:11,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:42:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:11,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:42:11,333 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:42:11,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284340748] [2024-11-09 05:42:11,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284340748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:42:11,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:42:11,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:42:11,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958807861] [2024-11-09 05:42:11,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:42:11,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:42:11,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:42:11,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:42:11,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:42:11,337 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2024-11-09 05:42:11,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:11,456 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2024-11-09 05:42:11,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:42:11,457 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 8 [2024-11-09 05:42:11,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:11,458 INFO L225 Difference]: With dead ends: 24 [2024-11-09 05:42:11,458 INFO L226 Difference]: Without dead ends: 24 [2024-11-09 05:42:11,458 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:42:11,460 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 18 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:42:11,460 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 35 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:42:11,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-09 05:42:11,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-09 05:42:11,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 19 states have internal predecessors, (23), 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) [2024-11-09 05:42:11,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-11-09 05:42:11,465 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 8 [2024-11-09 05:42:11,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:11,466 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-11-09 05:42:11,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2024-11-09 05:42:11,467 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-11-09 05:42:11,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 05:42:11,467 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:11,467 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:42:11,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 05:42:11,468 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 05:42:11,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:11,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1346757494, now seen corresponding path program 1 times [2024-11-09 05:42:11,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:42:11,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171296744] [2024-11-09 05:42:11,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:11,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:42:11,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:11,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:42:11,620 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:42:11,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171296744] [2024-11-09 05:42:11,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171296744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:42:11,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:42:11,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:42:11,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182221541] [2024-11-09 05:42:11,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:42:11,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:42:11,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:42:11,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:42:11,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:42:11,624 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2024-11-09 05:42:11,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:11,654 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2024-11-09 05:42:11,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:42:11,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 8 [2024-11-09 05:42:11,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:11,657 INFO L225 Difference]: With dead ends: 22 [2024-11-09 05:42:11,657 INFO L226 Difference]: Without dead ends: 22 [2024-11-09 05:42:11,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:42:11,659 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 1 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:42:11,659 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 26 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:42:11,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-09 05:42:11,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-09 05:42:11,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.5) internal successors, (21), 17 states have internal predecessors, (21), 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) [2024-11-09 05:42:11,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-11-09 05:42:11,663 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 8 [2024-11-09 05:42:11,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:11,664 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-11-09 05:42:11,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2024-11-09 05:42:11,664 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-11-09 05:42:11,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 05:42:11,665 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:11,665 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:42:11,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 05:42:11,665 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 05:42:11,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:11,666 INFO L85 PathProgramCache]: Analyzing trace with hash 104258662, now seen corresponding path program 1 times [2024-11-09 05:42:11,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:42:11,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455791049] [2024-11-09 05:42:11,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:11,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:42:11,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:11,874 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:42:11,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:42:11,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455791049] [2024-11-09 05:42:11,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455791049] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:42:11,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050970630] [2024-11-09 05:42:11,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:11,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:42:11,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:42:11,881 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:42:11,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:42:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:12,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 05:42:12,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:42:12,075 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:42:12,075 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:42:12,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050970630] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:42:12,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:42:12,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 05:42:12,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718103984] [2024-11-09 05:42:12,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:42:12,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:42:12,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:42:12,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:42:12,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:42:12,079 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:42:12,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:12,138 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2024-11-09 05:42:12,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:42:12,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2024-11-09 05:42:12,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:12,140 INFO L225 Difference]: With dead ends: 28 [2024-11-09 05:42:12,140 INFO L226 Difference]: Without dead ends: 24 [2024-11-09 05:42:12,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:42:12,142 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:42:12,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:42:12,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-09 05:42:12,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-09 05:42:12,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.4375) internal successors, (23), 19 states have internal predecessors, (23), 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) [2024-11-09 05:42:12,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-11-09 05:42:12,150 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2024-11-09 05:42:12,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:12,154 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-11-09 05:42:12,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:42:12,157 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-11-09 05:42:12,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 05:42:12,157 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:12,157 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:42:12,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 05:42:12,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:42:12,359 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 05:42:12,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:12,359 INFO L85 PathProgramCache]: Analyzing trace with hash -939840734, now seen corresponding path program 1 times [2024-11-09 05:42:12,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:42:12,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85664033] [2024-11-09 05:42:12,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:12,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:42:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:12,665 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:42:12,665 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:42:12,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85664033] [2024-11-09 05:42:12,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85664033] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:42:12,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194912371] [2024-11-09 05:42:12,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:12,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:42:12,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:42:12,669 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:42:12,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:42:12,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:12,804 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 05:42:12,806 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:42:12,875 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:42:12,875 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:42:12,983 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 05:42:12,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194912371] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:42:12,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1020286598] [2024-11-09 05:42:13,014 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:42:13,014 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:42:13,021 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:42:13,030 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:42:13,030 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:42:13,753 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memcpy with input of size 92 for LOIs [2024-11-09 05:42:14,509 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:42:15,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1020286598] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:42:15,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:42:15,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5, 4] total 13 [2024-11-09 05:42:15,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074758210] [2024-11-09 05:42:15,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:42:15,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:42:15,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:42:15,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:42:15,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-09 05:42:15,391 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:42:15,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:15,908 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2024-11-09 05:42:15,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:42:15,909 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2024-11-09 05:42:15,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:15,910 INFO L225 Difference]: With dead ends: 25 [2024-11-09 05:42:15,910 INFO L226 Difference]: Without dead ends: 25 [2024-11-09 05:42:15,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-09 05:42:15,911 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:42:15,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 37 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:42:15,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-09 05:42:15,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-09 05:42:15,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.411764705882353) internal successors, (24), 20 states have internal predecessors, (24), 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) [2024-11-09 05:42:15,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-11-09 05:42:15,916 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 17 [2024-11-09 05:42:15,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:15,917 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-11-09 05:42:15,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:42:15,917 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-11-09 05:42:15,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 05:42:15,918 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:15,918 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:42:15,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 05:42:16,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:42:16,120 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 05:42:16,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:16,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1541415879, now seen corresponding path program 1 times [2024-11-09 05:42:16,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:42:16,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115206069] [2024-11-09 05:42:16,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:16,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:42:16,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:16,409 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:42:16,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:42:16,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115206069] [2024-11-09 05:42:16,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115206069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:42:16,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573497190] [2024-11-09 05:42:16,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:16,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:42:16,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:42:16,413 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:42:16,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:42:16,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:16,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:42:16,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:42:16,602 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:42:16,602 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:42:16,663 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 05:42:16,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573497190] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 05:42:16,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 05:42:16,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 9 [2024-11-09 05:42:16,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298344332] [2024-11-09 05:42:16,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:42:16,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:42:16,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:42:16,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:42:16,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-09 05:42:16,668 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2024-11-09 05:42:16,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:16,712 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2024-11-09 05:42:16,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:42:16,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 18 [2024-11-09 05:42:16,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:16,715 INFO L225 Difference]: With dead ends: 26 [2024-11-09 05:42:16,716 INFO L226 Difference]: Without dead ends: 26 [2024-11-09 05:42:16,716 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-09 05:42:16,717 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:42:16,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 20 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:42:16,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-09 05:42:16,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-09 05:42:16,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 21 states have internal predecessors, (25), 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) [2024-11-09 05:42:16,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2024-11-09 05:42:16,723 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 18 [2024-11-09 05:42:16,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:16,723 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2024-11-09 05:42:16,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2024-11-09 05:42:16,728 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2024-11-09 05:42:16,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 05:42:16,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:16,729 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:42:16,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 05:42:16,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 05:42:16,930 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 05:42:16,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:16,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1625730782, now seen corresponding path program 2 times [2024-11-09 05:42:16,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:42:16,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947968047] [2024-11-09 05:42:16,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:16,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:42:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:17,226 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 05:42:17,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:42:17,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947968047] [2024-11-09 05:42:17,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947968047] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:42:17,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195410590] [2024-11-09 05:42:17,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:42:17,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:42:17,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:42:17,230 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:42:17,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 05:42:17,385 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 05:42:17,385 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:42:17,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 05:42:17,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:42:17,471 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:42:17,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:42:17,617 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:42:17,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195410590] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:42:17,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1505713582] [2024-11-09 05:42:17,623 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:42:17,623 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:42:17,623 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:42:17,624 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:42:17,624 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:42:19,125 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memcpy with input of size 215 for LOIs [2024-11-09 05:42:19,852 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:42:25,341 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '982#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_#Ultimate.C_memcpy_#t~loopctr10_46| Int)) (and (<= 0 |v_#Ultimate.C_memcpy_#t~loopctr10_46|) (<= 4 (mod |v_#Ultimate.C_memcpy_#t~loopctr10_46| 4294967296)))) (= |ULTIMATE.start_main_#t~mem6#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#p~1#1.base|) 0)) (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#p~1#1.base|) 0) 0)) (exists ((|v_#length_29| (Array Int Int)) (|v_ULTIMATE.start_foo_~#p~0#1.base_16| Int) (|v_#valid_41| (Array Int Int))) (and (= (store (store |v_#valid_41| |v_ULTIMATE.start_foo_~#p~0#1.base_16| 0) |ULTIMATE.start_main_~#p~1#1.base| 1) |#valid|) (or (and (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (<= (+ |#StackHeapBarrier| 1) |v_ULTIMATE.start_foo_~#p~0#1.base_16|) (= (select |ULTIMATE.start_main_old_#valid#1| 3) 1) (exists ((|v_#length_28| (Array Int Int)) (|v_old(#memory_$Pointer$.base)_AFTER_CALL_12| (Array Int (Array Int Int)))) (and (= (select |v_#length_28| 2) 24) (= |v_#valid_41| (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_foo_~#p~0#1.base_16| 1) (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_12| |v_ULTIMATE.start_foo_~#p~0#1.base_16|) 0) 1)) (= 2 (select |v_#length_28| 1)) (= (select |v_#length_28| 3) 4) (not (= (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_12| |v_ULTIMATE.start_foo_~#p~0#1.base_16|) 0) 0)) (<= (+ (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_12| |v_ULTIMATE.start_foo_~#p~0#1.base_16|) 0) 1) |#StackHeapBarrier|) (= (select |ULTIMATE.start_main_old_#valid#1| (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_12| |v_ULTIMATE.start_foo_~#p~0#1.base_16|) 0)) 0) (= (store (store |v_#length_28| |v_ULTIMATE.start_foo_~#p~0#1.base_16| 4) (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_12| |v_ULTIMATE.start_foo_~#p~0#1.base_16|) 0) 10) |v_#length_29|))) (exists ((|v_old(#memory_$Pointer$.offset)_AFTER_CALL_12| (Array Int (Array Int Int)))) (= (select (select |v_old(#memory_$Pointer$.offset)_AFTER_CALL_12| |v_ULTIMATE.start_foo_~#p~0#1.base_16|) 0) 0)) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (exists ((|v_#memory_int_BEFORE_CALL_9| (Array Int (Array Int Int)))) (and (= (select (select |v_#memory_int_BEFORE_CALL_9| 3) 2) 0) (= (select (select |v_#memory_int_BEFORE_CALL_9| 1) 1) 0) (= 48 (select (select |v_#memory_int_BEFORE_CALL_9| 1) 0)) (= (select (select |v_#memory_int_BEFORE_CALL_9| 3) 0) 0) (= (select (select |v_#memory_int_BEFORE_CALL_9| 3) 3) 0) (= (select (select |v_#memory_int_BEFORE_CALL_9| 3) 1) 0))) (= (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_foo_~#p~0#1.base_16|) 0)) (and (exists ((|v_#length_28| (Array Int Int)) (|v_old(#memory_$Pointer$.base)_AFTER_CALL_11| (Array Int (Array Int Int)))) (and (<= (+ (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_11| |v_ULTIMATE.start_foo_~#p~0#1.base_16|) 0) 1) |#StackHeapBarrier|) (= (select |v_#length_28| 2) 24) (= (store (store |v_#length_28| |v_ULTIMATE.start_foo_~#p~0#1.base_16| 4) (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_11| |v_ULTIMATE.start_foo_~#p~0#1.base_16|) 0) 10) |v_#length_29|) (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_foo_~#p~0#1.base_16| 1) (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_11| |v_ULTIMATE.start_foo_~#p~0#1.base_16|) 0) 1) |v_#valid_41|) (= (select |ULTIMATE.start_main_old_#valid#1| (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_11| |v_ULTIMATE.start_foo_~#p~0#1.base_16|) 0)) 0) (= 2 (select |v_#length_28| 1)) (= (select |v_#length_28| 3) 4) (not (= (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_11| |v_ULTIMATE.start_foo_~#p~0#1.base_16|) 0) 0)))) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (<= (+ |#StackHeapBarrier| 1) |v_ULTIMATE.start_foo_~#p~0#1.base_16|) (= (select |ULTIMATE.start_main_old_#valid#1| 3) 1) (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_7| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_7| |v_ULTIMATE.start_foo_~#p~0#1.base_16|) 0) 0)) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (= (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_foo_~#p~0#1.base_16|) 0) (exists ((|v_#memory_int_BEFORE_CALL_7| (Array Int (Array Int Int)))) (and (= (select (select |v_#memory_int_BEFORE_CALL_7| 1) 1) 0) (= (select (select |v_#memory_int_BEFORE_CALL_7| 1) 0) 48) (= (select (select |v_#memory_int_BEFORE_CALL_7| 3) 1) 0) (= (select (select |v_#memory_int_BEFORE_CALL_7| 3) 0) 0) (= (select (select |v_#memory_int_BEFORE_CALL_7| 3) 2) 0) (= (select (select |v_#memory_int_BEFORE_CALL_7| 3) 3) 0))))) (= (select (store |v_#valid_41| |v_ULTIMATE.start_foo_~#p~0#1.base_16| 0) |ULTIMATE.start_main_~#p~1#1.base|) 0) (= (store |v_#length_29| |ULTIMATE.start_main_~#p~1#1.base| 4) |#length|))) (= 3 |~#a~0.base|) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#p~1#1.base|) (= |~#a~0.offset| 0))' at error location [2024-11-09 05:42:25,341 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:42:25,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:42:25,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 14 [2024-11-09 05:42:25,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897502095] [2024-11-09 05:42:25,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:42:25,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 05:42:25,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:42:25,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 05:42:25,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2024-11-09 05:42:25,344 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 14 states, 13 states have (on average 2.0) internal successors, (26), 14 states have internal predecessors, (26), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 05:42:25,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:25,528 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2024-11-09 05:42:25,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 05:42:25,529 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.0) internal successors, (26), 14 states have internal predecessors, (26), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 19 [2024-11-09 05:42:25,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:25,530 INFO L225 Difference]: With dead ends: 44 [2024-11-09 05:42:25,530 INFO L226 Difference]: Without dead ends: 32 [2024-11-09 05:42:25,530 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2024-11-09 05:42:25,531 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:42:25,532 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:42:25,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-09 05:42:25,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-09 05:42:25,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 27 states have internal predecessors, (31), 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) [2024-11-09 05:42:25,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2024-11-09 05:42:25,535 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 19 [2024-11-09 05:42:25,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:25,536 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2024-11-09 05:42:25,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.0) internal successors, (26), 14 states have internal predecessors, (26), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 05:42:25,536 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2024-11-09 05:42:25,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 05:42:25,540 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:25,540 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:42:25,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 05:42:25,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:42:25,741 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 05:42:25,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:25,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1513884702, now seen corresponding path program 3 times [2024-11-09 05:42:25,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:42:25,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711325862] [2024-11-09 05:42:25,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:25,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:42:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:27,967 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 05:42:27,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:42:27,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711325862] [2024-11-09 05:42:27,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711325862] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:42:27,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111498651] [2024-11-09 05:42:27,968 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:42:27,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:42:27,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:42:27,971 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:42:27,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 05:42:28,146 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:42:28,147 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:42:28,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-09 05:42:28,155 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:42:28,207 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 05:42:28,208 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 [2024-11-09 05:42:28,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:42:28,625 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 21 treesize of output 21 [2024-11-09 05:42:28,633 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 7 [2024-11-09 05:42:28,704 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 05:42:28,705 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 24 [2024-11-09 05:42:29,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:42:29,107 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2024-11-09 05:42:29,108 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 1 case distinctions, treesize of input 28 treesize of output 35 [2024-11-09 05:42:29,118 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 7 [2024-11-09 05:42:29,218 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 05:42:29,218 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:42:29,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111498651] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:42:29,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [279363147] [2024-11-09 05:42:29,422 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:42:29,422 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:42:29,423 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:42:29,423 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:42:29,423 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:42:30,671 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memcpy with input of size 215 for LOIs [2024-11-09 05:42:31,278 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:42:37,469 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1182#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_#valid_45| (Array Int Int)) (|v_#length_31| (Array Int Int)) (|v_ULTIMATE.start_foo_~#p~0#1.base_18| Int)) (and (or (and (<= (+ |#StackHeapBarrier| 1) |v_ULTIMATE.start_foo_~#p~0#1.base_18|) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (= (select |ULTIMATE.start_main_old_#valid#1| 3) 1) (exists ((|v_#memory_int_BEFORE_CALL_17| (Array Int (Array Int Int)))) (and (= (select (select |v_#memory_int_BEFORE_CALL_17| 3) 1) 0) (= (select (select |v_#memory_int_BEFORE_CALL_17| 3) 0) 0) (= (select (select |v_#memory_int_BEFORE_CALL_17| 3) 2) 0) (= 48 (select (select |v_#memory_int_BEFORE_CALL_17| 1) 0)) (= (select (select |v_#memory_int_BEFORE_CALL_17| 1) 1) 0) (= (select (select |v_#memory_int_BEFORE_CALL_17| 3) 3) 0))) (exists ((|v_#length_30| (Array Int Int)) (|v_old(#memory_$Pointer$.base)_AFTER_CALL_17| (Array Int (Array Int Int)))) (and (= (select |v_#length_30| 1) 2) (<= (+ (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_17| |v_ULTIMATE.start_foo_~#p~0#1.base_18|) 0) 1) |#StackHeapBarrier|) (= (store (store |v_#length_30| |v_ULTIMATE.start_foo_~#p~0#1.base_18| 4) (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_17| |v_ULTIMATE.start_foo_~#p~0#1.base_18|) 0) 10) |v_#length_31|) (= (select |v_#length_30| 3) 4) (= (select |v_#length_30| 2) 24) (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_foo_~#p~0#1.base_18| 1) (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_17| |v_ULTIMATE.start_foo_~#p~0#1.base_18|) 0) 1) |v_#valid_45|) (= (select |ULTIMATE.start_main_old_#valid#1| (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_17| |v_ULTIMATE.start_foo_~#p~0#1.base_18|) 0)) 0) (not (= (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_17| |v_ULTIMATE.start_foo_~#p~0#1.base_18|) 0) 0)))) (= (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_foo_~#p~0#1.base_18|) 0) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (exists ((|v_old(#memory_$Pointer$.offset)_AFTER_CALL_17| (Array Int (Array Int Int)))) (= (select (select |v_old(#memory_$Pointer$.offset)_AFTER_CALL_17| |v_ULTIMATE.start_foo_~#p~0#1.base_18|) 0) 0))) (and (<= (+ |#StackHeapBarrier| 1) |v_ULTIMATE.start_foo_~#p~0#1.base_18|) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (exists ((|v_#memory_int_BEFORE_CALL_19| (Array Int (Array Int Int)))) (and (= (select (select |v_#memory_int_BEFORE_CALL_19| 3) 1) 0) (= (select (select |v_#memory_int_BEFORE_CALL_19| 1) 1) 0) (= (select (select |v_#memory_int_BEFORE_CALL_19| 1) 0) 48) (= (select (select |v_#memory_int_BEFORE_CALL_19| 3) 3) 0) (= (select (select |v_#memory_int_BEFORE_CALL_19| 3) 2) 0) (= (select (select |v_#memory_int_BEFORE_CALL_19| 3) 0) 0))) (= (select |ULTIMATE.start_main_old_#valid#1| 3) 1) (= (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_foo_~#p~0#1.base_18|) 0) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_23| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_23| |v_ULTIMATE.start_foo_~#p~0#1.base_18|) 0) 0)) (exists ((|v_#length_30| (Array Int Int)) (|v_old(#memory_$Pointer$.base)_AFTER_CALL_18| (Array Int (Array Int Int)))) (and (= (store (store |v_#length_30| |v_ULTIMATE.start_foo_~#p~0#1.base_18| 4) (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_18| |v_ULTIMATE.start_foo_~#p~0#1.base_18|) 0) 10) |v_#length_31|) (= (select |v_#length_30| 1) 2) (= (select |v_#length_30| 3) 4) (= (select |v_#length_30| 2) 24) (not (= (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_18| |v_ULTIMATE.start_foo_~#p~0#1.base_18|) 0) 0)) (<= (+ (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_18| |v_ULTIMATE.start_foo_~#p~0#1.base_18|) 0) 1) |#StackHeapBarrier|) (= (select |ULTIMATE.start_main_old_#valid#1| (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_18| |v_ULTIMATE.start_foo_~#p~0#1.base_18|) 0)) 0) (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_foo_~#p~0#1.base_18| 1) (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_18| |v_ULTIMATE.start_foo_~#p~0#1.base_18|) 0) 1) |v_#valid_45|))))) (= (select (store |v_#valid_45| |v_ULTIMATE.start_foo_~#p~0#1.base_18| 0) |ULTIMATE.start_main_~#p~1#1.base|) 0) (= (store (store |v_#valid_45| |v_ULTIMATE.start_foo_~#p~0#1.base_18| 0) |ULTIMATE.start_main_~#p~1#1.base| 1) |#valid|) (= (store |v_#length_31| |ULTIMATE.start_main_~#p~1#1.base| 4) |#length|))) (= |ULTIMATE.start_main_#t~mem6#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#p~1#1.base|) 0)) (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#p~1#1.base|) 0) 0)) (= 3 |~#a~0.base|) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#p~1#1.base|) (exists ((|v_#Ultimate.C_memcpy_#t~loopctr10_59| Int)) (and (<= 0 |v_#Ultimate.C_memcpy_#t~loopctr10_59|) (<= 4 (mod |v_#Ultimate.C_memcpy_#t~loopctr10_59| 4294967296)))) (= |~#a~0.offset| 0))' at error location [2024-11-09 05:42:37,469 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:42:37,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 05:42:37,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2024-11-09 05:42:37,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292083359] [2024-11-09 05:42:37,470 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 05:42:37,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-09 05:42:37,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:42:37,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-09 05:42:37,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1287, Unknown=6, NotChecked=0, Total=1406 [2024-11-09 05:42:37,473 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 27 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 05:42:38,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:38,513 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2024-11-09 05:42:38,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 05:42:38,513 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 3 states have call successors, (4), 2 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 25 [2024-11-09 05:42:38,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:38,516 INFO L225 Difference]: With dead ends: 35 [2024-11-09 05:42:38,516 INFO L226 Difference]: Without dead ends: 35 [2024-11-09 05:42:38,518 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=193, Invalid=1963, Unknown=6, NotChecked=0, Total=2162 [2024-11-09 05:42:38,518 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 7 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 22 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:42:38,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 102 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 197 Invalid, 11 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:42:38,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-09 05:42:38,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2024-11-09 05:42:38,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 24 states have (on average 1.25) internal successors, (30), 26 states have internal predecessors, (30), 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) [2024-11-09 05:42:38,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2024-11-09 05:42:38,523 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 25 [2024-11-09 05:42:38,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:38,523 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2024-11-09 05:42:38,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 05:42:38,524 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2024-11-09 05:42:38,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 05:42:38,524 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:38,527 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:42:38,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 05:42:38,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:42:38,728 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 05:42:38,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:38,728 INFO L85 PathProgramCache]: Analyzing trace with hash 314214562, now seen corresponding path program 1 times [2024-11-09 05:42:38,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:42:38,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644513184] [2024-11-09 05:42:38,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:38,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:42:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:40,642 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 05:42:40,643 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:42:40,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644513184] [2024-11-09 05:42:40,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644513184] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:42:40,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934655067] [2024-11-09 05:42:40,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:40,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:42:40,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:42:40,646 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:42:40,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 05:42:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:40,852 INFO L255 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-09 05:42:40,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:42:40,876 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 05:42:40,876 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 [2024-11-09 05:42:40,924 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 5 [2024-11-09 05:42:41,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:42:41,235 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 34 treesize of output 34 [2024-11-09 05:42:41,247 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 12 treesize of output 1 [2024-11-09 05:42:41,329 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 05:42:41,330 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 24 [2024-11-09 05:42:41,431 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-09 05:42:41,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:42:41,748 INFO L349 Elim1Store]: treesize reduction 18, result has 33.3 percent of original size [2024-11-09 05:42:41,748 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 1 case distinctions, treesize of input 45 treesize of output 50 [2024-11-09 05:42:41,762 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 17 treesize of output 13 [2024-11-09 05:42:41,809 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 12 treesize of output 1 [2024-11-09 05:42:42,010 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:42:42,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 66 treesize of output 70 [2024-11-09 05:42:42,073 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 05:42:42,074 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:42:42,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934655067] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:42:42,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [232390143] [2024-11-09 05:42:42,325 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-09 05:42:42,325 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:42:42,326 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:42:42,326 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:42:42,326 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:42:43,611 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memcpy with input of size 215 for LOIs [2024-11-09 05:42:44,058 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:42:50,472 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1395#(and (exists ((|v_#Ultimate.C_memcpy_#t~loopctr10_72| Int)) (and (<= 0 |v_#Ultimate.C_memcpy_#t~loopctr10_72|) (<= 4 (mod |v_#Ultimate.C_memcpy_#t~loopctr10_72| 4294967296)))) (<= |#StackHeapBarrier| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#p~1#1.base|) 0)) (<= 1 |#StackHeapBarrier|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#p~1#1.base|) 0) 0) (= 3 |~#a~0.base|) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#p~1#1.base|) (= |~#a~0.offset| 0) (exists ((|v_ULTIMATE.start_foo_~#p~0#1.base_20| Int) (|v_#length_33| (Array Int Int)) (|v_#valid_49| (Array Int Int))) (and (or (and (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (= (select |ULTIMATE.start_main_old_#valid#1| 3) 1) (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_31| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_31| |v_ULTIMATE.start_foo_~#p~0#1.base_20|) 0) 0)) (= (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_foo_~#p~0#1.base_20|) 0) (exists ((|v_old(#memory_$Pointer$.base)_AFTER_CALL_23| (Array Int (Array Int Int))) (|v_#length_32| (Array Int Int))) (and (= (select |v_#length_32| 1) 2) (<= (+ (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_23| |v_ULTIMATE.start_foo_~#p~0#1.base_20|) 0) 1) |#StackHeapBarrier|) (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_foo_~#p~0#1.base_20| 1) (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_23| |v_ULTIMATE.start_foo_~#p~0#1.base_20|) 0) 1) |v_#valid_49|) (not (= (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_23| |v_ULTIMATE.start_foo_~#p~0#1.base_20|) 0) 0)) (= (select |ULTIMATE.start_main_old_#valid#1| (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_23| |v_ULTIMATE.start_foo_~#p~0#1.base_20|) 0)) 0) (= (select |v_#length_32| 2) 24) (= (select |v_#length_32| 3) 4) (= |v_#length_33| (store (store |v_#length_32| |v_ULTIMATE.start_foo_~#p~0#1.base_20| 4) (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_23| |v_ULTIMATE.start_foo_~#p~0#1.base_20|) 0) 10)))) (<= (+ |#StackHeapBarrier| 1) |v_ULTIMATE.start_foo_~#p~0#1.base_20|) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (exists ((|v_#memory_int_BEFORE_CALL_27| (Array Int (Array Int Int)))) (and (= (select (select |v_#memory_int_BEFORE_CALL_27| 3) 2) 0) (= (select (select |v_#memory_int_BEFORE_CALL_27| 3) 1) 0) (= (select (select |v_#memory_int_BEFORE_CALL_27| 1) 1) 0) (= 0 (select (select |v_#memory_int_BEFORE_CALL_27| 3) 0)) (= (select (select |v_#memory_int_BEFORE_CALL_27| 3) 3) 0) (= (select (select |v_#memory_int_BEFORE_CALL_27| 1) 0) 48)))) (and (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_33| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_33| |v_ULTIMATE.start_foo_~#p~0#1.base_20|) 0) 0)) (= (select |ULTIMATE.start_main_old_#valid#1| 3) 1) (= (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_foo_~#p~0#1.base_20|) 0) (<= (+ |#StackHeapBarrier| 1) |v_ULTIMATE.start_foo_~#p~0#1.base_20|) (exists ((|v_#memory_int_BEFORE_CALL_29| (Array Int (Array Int Int)))) (and (= 48 (select (select |v_#memory_int_BEFORE_CALL_29| 1) 0)) (= 0 (select (select |v_#memory_int_BEFORE_CALL_29| 3) 2)) (= (select (select |v_#memory_int_BEFORE_CALL_29| 1) 1) 0) (= (select (select |v_#memory_int_BEFORE_CALL_29| 3) 3) 0) (= (select (select |v_#memory_int_BEFORE_CALL_29| 3) 0) 0) (= (select (select |v_#memory_int_BEFORE_CALL_29| 3) 1) 0))) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (exists ((|v_#length_32| (Array Int Int)) (|v_old(#memory_$Pointer$.base)_AFTER_CALL_24| (Array Int (Array Int Int)))) (and (= (select |v_#length_32| 1) 2) (= |v_#valid_49| (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_foo_~#p~0#1.base_20| 1) (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_24| |v_ULTIMATE.start_foo_~#p~0#1.base_20|) 0) 1)) (= (store (store |v_#length_32| |v_ULTIMATE.start_foo_~#p~0#1.base_20| 4) (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_24| |v_ULTIMATE.start_foo_~#p~0#1.base_20|) 0) 10) |v_#length_33|) (not (= (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_24| |v_ULTIMATE.start_foo_~#p~0#1.base_20|) 0) 0)) (= (select |v_#length_32| 2) 24) (= (select |v_#length_32| 3) 4) (<= (+ (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_24| |v_ULTIMATE.start_foo_~#p~0#1.base_20|) 0) 1) |#StackHeapBarrier|) (= (select |ULTIMATE.start_main_old_#valid#1| (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_24| |v_ULTIMATE.start_foo_~#p~0#1.base_20|) 0)) 0))))) (= (select (store |v_#valid_49| |v_ULTIMATE.start_foo_~#p~0#1.base_20| 0) |ULTIMATE.start_main_~#p~1#1.base|) 0) (= |#length| (store |v_#length_33| |ULTIMATE.start_main_~#p~1#1.base| 4)) (= (store (store |v_#valid_49| |v_ULTIMATE.start_foo_~#p~0#1.base_20| 0) |ULTIMATE.start_main_~#p~1#1.base| 1) |#valid|))))' at error location [2024-11-09 05:42:50,472 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:42:50,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 05:42:50,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2024-11-09 05:42:50,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52945500] [2024-11-09 05:42:50,473 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 05:42:50,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 05:42:50,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:42:50,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 05:42:50,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1429, Unknown=5, NotChecked=0, Total=1560 [2024-11-09 05:42:50,476 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 29 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 05:42:51,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:51,444 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2024-11-09 05:42:51,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 05:42:51,445 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 26 [2024-11-09 05:42:51,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:51,446 INFO L225 Difference]: With dead ends: 34 [2024-11-09 05:42:51,446 INFO L226 Difference]: Without dead ends: 34 [2024-11-09 05:42:51,447 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=197, Invalid=2052, Unknown=7, NotChecked=0, Total=2256 [2024-11-09 05:42:51,447 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 22 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:42:51,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 49 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 215 Invalid, 5 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:42:51,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-09 05:42:51,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2024-11-09 05:42:51,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 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) [2024-11-09 05:42:51,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-11-09 05:42:51,452 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 26 [2024-11-09 05:42:51,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:51,453 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-11-09 05:42:51,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 05:42:51,453 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-11-09 05:42:51,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 05:42:51,454 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:51,454 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:42:51,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 05:42:51,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:42:51,655 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 05:42:51,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:51,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1150716900, now seen corresponding path program 1 times [2024-11-09 05:42:51,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:42:51,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365024032] [2024-11-09 05:42:51,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:51,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:42:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:53,606 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 05:42:53,606 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:42:53,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365024032] [2024-11-09 05:42:53,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365024032] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:42:53,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807345599] [2024-11-09 05:42:53,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:53,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:42:53,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:42:53,611 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:42:53,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 05:42:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:53,893 INFO L255 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-09 05:42:53,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:42:53,946 INFO L349 Elim1Store]: treesize reduction 48, result has 17.2 percent of original size [2024-11-09 05:42:53,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 25 [2024-11-09 05:42:53,986 INFO L349 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2024-11-09 05:42:53,987 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 21 treesize of output 29 [2024-11-09 05:42:54,064 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 5 [2024-11-09 05:42:54,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:42:54,445 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 23 [2024-11-09 05:42:54,454 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 12 treesize of output 11 [2024-11-09 05:42:54,587 INFO L349 Elim1Store]: treesize reduction 64, result has 29.7 percent of original size [2024-11-09 05:42:54,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 41 [2024-11-09 05:42:54,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:42:54,711 INFO L349 Elim1Store]: treesize reduction 144, result has 25.0 percent of original size [2024-11-09 05:42:54,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 38 treesize of output 60 [2024-11-09 05:42:54,988 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-09 05:42:55,632 INFO L349 Elim1Store]: treesize reduction 153, result has 20.7 percent of original size [2024-11-09 05:42:55,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 146 treesize of output 173 [2024-11-09 05:42:55,677 INFO L349 Elim1Store]: treesize reduction 44, result has 13.7 percent of original size [2024-11-09 05:42:55,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 40 [2024-11-09 05:42:55,966 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 17 treesize of output 13 [2024-11-09 05:42:56,330 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 17 treesize of output 13 [2024-11-09 05:42:57,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:42:57,467 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:42:57,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 247 treesize of output 305 [2024-11-09 05:42:58,287 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 13 treesize of output 9 [2024-11-09 05:43:00,129 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 33 treesize of output 23 [2024-11-09 05:43:00,255 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 21 treesize of output 15 [2024-11-09 05:43:00,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-09 05:43:01,005 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 [2024-11-09 05:43:01,024 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 21 treesize of output 15 [2024-11-09 05:43:01,040 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 33 treesize of output 23 [2024-11-09 05:43:01,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-09 05:43:01,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-09 05:43:01,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-09 05:43:01,121 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 33 treesize of output 23 [2024-11-09 05:43:01,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-09 05:43:01,184 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 05:43:01,185 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 40 treesize of output 26 [2024-11-09 05:43:01,241 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 [2024-11-09 05:43:01,261 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 [2024-11-09 05:43:01,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-09 05:43:01,316 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 05:43:01,316 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 40 treesize of output 26 [2024-11-09 05:43:01,399 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 [2024-11-09 05:43:01,425 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 05:43:01,425 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 28 treesize of output 18 [2024-11-09 05:43:01,476 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 05:43:01,476 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 40 treesize of output 26 [2024-11-09 05:43:01,599 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 [2024-11-09 05:43:01,625 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 [2024-11-09 05:43:02,177 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 05:43:02,177 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 34 treesize of output 22 [2024-11-09 05:43:02,307 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 [2024-11-09 05:43:02,329 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 05:43:02,330 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 28 treesize of output 18 [2024-11-09 05:43:02,394 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 33 treesize of output 23 [2024-11-09 05:43:02,426 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 05:43:02,426 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 34 treesize of output 22 [2024-11-09 05:43:02,493 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 21 treesize of output 15 [2024-11-09 05:43:02,724 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 27 treesize of output 19 [2024-11-09 05:43:02,761 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 21 treesize of output 15 [2024-11-09 05:43:02,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-09 05:43:03,006 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 05:43:03,007 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 34 treesize of output 22 [2024-11-09 05:43:03,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-09 05:43:03,113 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 05:43:03,113 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 28 treesize of output 18 [2024-11-09 05:43:03,158 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 27 treesize of output 19 [2024-11-09 05:43:03,192 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 21 treesize of output 15 [2024-11-09 05:43:03,234 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 05:43:03,235 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 34 treesize of output 22 [2024-11-09 05:43:03,816 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:43:03,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 332 treesize of output 690 [2024-11-09 05:43:05,793 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 05:43:05,793 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:43:06,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807345599] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:43:06,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [921095624] [2024-11-09 05:43:06,230 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2024-11-09 05:43:06,231 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:43:06,232 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:43:06,233 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:43:06,233 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:43:07,310 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memcpy with input of size 215 for LOIs [2024-11-09 05:43:07,704 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:43:16,192 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1616#(and (<= 1 |#StackHeapBarrier|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#p~1#1.base|) 0) 0) (<= (+ (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#p~1#1.base|) 0) 1) |#StackHeapBarrier|) (exists ((|v_#Ultimate.C_memcpy_#t~loopctr10_85| Int)) (and (<= 4 (mod |v_#Ultimate.C_memcpy_#t~loopctr10_85| 4294967296)) (<= 0 |v_#Ultimate.C_memcpy_#t~loopctr10_85|))) (not (= (select |#valid| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#p~1#1.base|) 0)) 1)) (= 3 |~#a~0.base|) (exists ((|v_#valid_55| (Array Int Int)) (|v_ULTIMATE.start_foo_~#p~0#1.base_22| Int) (|v_#length_35| (Array Int Int))) (and (or (and (<= (+ |#StackHeapBarrier| 1) |v_ULTIMATE.start_foo_~#p~0#1.base_22|) (= (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_foo_~#p~0#1.base_22|) 0) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (exists ((|v_old(#memory_$Pointer$.offset)_AFTER_CALL_29| (Array Int (Array Int Int)))) (= (select (select |v_old(#memory_$Pointer$.offset)_AFTER_CALL_29| |v_ULTIMATE.start_foo_~#p~0#1.base_22|) 0) 0)) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (= (select |ULTIMATE.start_main_old_#valid#1| 3) 1) (exists ((|v_#memory_int_BEFORE_CALL_37| (Array Int (Array Int Int)))) (and (= (select (select |v_#memory_int_BEFORE_CALL_37| 1) 0) 48) (= (select (select |v_#memory_int_BEFORE_CALL_37| 3) 0) 0) (= (select (select |v_#memory_int_BEFORE_CALL_37| 3) 1) 0) (= (select (select |v_#memory_int_BEFORE_CALL_37| 3) 3) 0) (= (select (select |v_#memory_int_BEFORE_CALL_37| 1) 1) 0) (= (select (select |v_#memory_int_BEFORE_CALL_37| 3) 2) 0))) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (exists ((|v_#length_34| (Array Int Int)) (|v_old(#memory_$Pointer$.base)_AFTER_CALL_29| (Array Int (Array Int Int)))) (and (not (= (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_29| |v_ULTIMATE.start_foo_~#p~0#1.base_22|) 0) 0)) (<= (+ (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_29| |v_ULTIMATE.start_foo_~#p~0#1.base_22|) 0) 1) |#StackHeapBarrier|) (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_foo_~#p~0#1.base_22| 1) (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_29| |v_ULTIMATE.start_foo_~#p~0#1.base_22|) 0) 1) |v_#valid_55|) (= (select |ULTIMATE.start_main_old_#valid#1| (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_29| |v_ULTIMATE.start_foo_~#p~0#1.base_22|) 0)) 0) (= (select |v_#length_34| 3) 4) (= (select |v_#length_34| 2) 24) (= (store (store |v_#length_34| |v_ULTIMATE.start_foo_~#p~0#1.base_22| 4) (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_29| |v_ULTIMATE.start_foo_~#p~0#1.base_22|) 0) 10) |v_#length_35|) (= 2 (select |v_#length_34| 1))))) (and (<= (+ |#StackHeapBarrier| 1) |v_ULTIMATE.start_foo_~#p~0#1.base_22|) (= (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_foo_~#p~0#1.base_22|) 0) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (= (select |ULTIMATE.start_main_old_#valid#1| 3) 1) (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_43| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_43| |v_ULTIMATE.start_foo_~#p~0#1.base_22|) 0) 0)) (exists ((|v_#memory_int_BEFORE_CALL_39| (Array Int (Array Int Int)))) (and (= (select (select |v_#memory_int_BEFORE_CALL_39| 3) 3) 0) (= (select (select |v_#memory_int_BEFORE_CALL_39| 3) 1) 0) (= (select (select |v_#memory_int_BEFORE_CALL_39| 1) 0) 48) (= (select (select |v_#memory_int_BEFORE_CALL_39| 3) 0) 0) (= (select (select |v_#memory_int_BEFORE_CALL_39| 1) 1) 0) (= (select (select |v_#memory_int_BEFORE_CALL_39| 3) 2) 0))) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (exists ((|v_#length_34| (Array Int Int)) (|v_old(#memory_$Pointer$.base)_AFTER_CALL_30| (Array Int (Array Int Int)))) (and (<= (+ (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_30| |v_ULTIMATE.start_foo_~#p~0#1.base_22|) 0) 1) |#StackHeapBarrier|) (= (select |v_#length_34| 3) 4) (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_foo_~#p~0#1.base_22| 1) (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_30| |v_ULTIMATE.start_foo_~#p~0#1.base_22|) 0) 1) |v_#valid_55|) (not (= (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_30| |v_ULTIMATE.start_foo_~#p~0#1.base_22|) 0) 0)) (= (select |v_#length_34| 2) 24) (= (store (store |v_#length_34| |v_ULTIMATE.start_foo_~#p~0#1.base_22| 4) (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_30| |v_ULTIMATE.start_foo_~#p~0#1.base_22|) 0) 10) |v_#length_35|) (= (select |ULTIMATE.start_main_old_#valid#1| (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_30| |v_ULTIMATE.start_foo_~#p~0#1.base_22|) 0)) 0) (= 2 (select |v_#length_34| 1)))))) (= (select (store |v_#valid_55| |v_ULTIMATE.start_foo_~#p~0#1.base_22| 0) |ULTIMATE.start_main_~#p~1#1.base|) 0) (= |#length| (store |v_#length_35| |ULTIMATE.start_main_~#p~1#1.base| 4)) (= (store (store |v_#valid_55| |v_ULTIMATE.start_foo_~#p~0#1.base_22| 0) |ULTIMATE.start_main_~#p~1#1.base| 1) |#valid|))) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#p~1#1.base|) (= |~#a~0.offset| 0) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#p~1#1.base|) 0) 0)))' at error location [2024-11-09 05:43:16,192 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:43:16,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 05:43:16,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 30 [2024-11-09 05:43:16,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927621724] [2024-11-09 05:43:16,193 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 05:43:16,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-09 05:43:16,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:43:16,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-09 05:43:16,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1917, Unknown=2, NotChecked=0, Total=2070 [2024-11-09 05:43:16,196 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 32 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 26 states have internal predecessors, (38), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 05:43:18,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:43:18,179 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2024-11-09 05:43:18,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 05:43:18,180 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 26 states have internal predecessors, (38), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 27 [2024-11-09 05:43:18,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:43:18,180 INFO L225 Difference]: With dead ends: 33 [2024-11-09 05:43:18,180 INFO L226 Difference]: Without dead ends: 33 [2024-11-09 05:43:18,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=246, Invalid=2944, Unknown=2, NotChecked=0, Total=3192 [2024-11-09 05:43:18,182 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 29 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:43:18,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 54 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 243 Invalid, 9 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 05:43:18,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-09 05:43:18,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2024-11-09 05:43:18,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 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) [2024-11-09 05:43:18,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2024-11-09 05:43:18,191 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 27 [2024-11-09 05:43:18,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:43:18,191 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2024-11-09 05:43:18,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 26 states have internal predecessors, (38), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 05:43:18,191 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2024-11-09 05:43:18,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 05:43:18,192 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:43:18,192 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:43:18,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 05:43:18,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 05:43:18,393 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 05:43:18,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:43:18,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1312485605, now seen corresponding path program 1 times [2024-11-09 05:43:18,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:43:18,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613015595] [2024-11-09 05:43:18,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:43:18,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:43:18,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:43:21,180 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 05:43:21,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:43:21,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613015595] [2024-11-09 05:43:21,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613015595] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:43:21,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212177948] [2024-11-09 05:43:21,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:43:21,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:43:21,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:43:21,182 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:43:21,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 05:43:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:43:21,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-09 05:43:21,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:43:21,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:43:21,515 INFO L349 Elim1Store]: treesize reduction 58, result has 23.7 percent of original size [2024-11-09 05:43:21,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 27 [2024-11-09 05:43:21,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:43:21,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:43:21,888 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 53 treesize of output 47 [2024-11-09 05:43:21,897 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 12 treesize of output 11 [2024-11-09 05:43:22,300 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:43:22,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 157 treesize of output 130 [2024-11-09 05:43:23,061 INFO L349 Elim1Store]: treesize reduction 383, result has 26.9 percent of original size [2024-11-09 05:43:23,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 229 treesize of output 367 [2024-11-09 05:43:29,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:43:29,141 INFO L349 Elim1Store]: treesize reduction 136, result has 16.0 percent of original size [2024-11-09 05:43:29,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 51 treesize of output 50 [2024-11-09 05:43:37,661 WARN L286 SmtUtils]: Spent 8.47s on a formula simplification. DAG size of input: 525 DAG size of output: 197 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-09 05:43:37,661 INFO L349 Elim1Store]: treesize reduction 1947, result has 18.7 percent of original size [2024-11-09 05:43:37,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 10 select indices, 10 select index equivalence classes, 2 disjoint index pairs (out of 45 index pairs), introduced 14 new quantified variables, introduced 90 case distinctions, treesize of input 169 treesize of output 758 [2024-11-09 05:51:07,932 WARN L286 SmtUtils]: Spent 9.64s on a formula simplification. DAG size of input: 1005 DAG size of output: 1814 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 05:51:17,109 WARN L286 SmtUtils]: Spent 8.22s on a formula simplification. DAG size of input: 999 DAG size of output: 1670 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 05:51:44,226 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-09 05:51:44,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2024-11-09 05:51:44,228 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2024-11-09 05:51:44,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [775371782] [2024-11-09 05:51:44,230 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-09 05:51:44,230 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:51:44,231 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:51:44,231 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:51:44,231 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:51:44,235 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:132) 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.SmtUtils.checkSatTerm(SmtUtils.java:326) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.isFalse(SymbolicTools.java:220) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.RelationCheckUtil.isEqBottom_SolverAlphaSolver(RelationCheckUtil.java:56) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.ExplicitValueDomain.isEqBottom(ExplicitValueDomain.java:73) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.CompoundDomain.isEqBottom(CompoundDomain.java:84) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.StatsWrapperDomain.isEqBottom(StatsWrapperDomain.java:69) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.earlyExitAfterStep(DagInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) 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:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) 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: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 44 more [2024-11-09 05:51:44,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:51:44,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-11-09 05:51:44,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762376208] [2024-11-09 05:51:44,239 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 05:51:44,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 05:51:44,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:51:44,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 05:51:44,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=542, Unknown=1, NotChecked=0, Total=600 [2024-11-09 05:51:44,240 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 17 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 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) [2024-11-09 05:51:44,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=57, Invalid=542, Unknown=1, NotChecked=0, Total=600 [2024-11-09 05:51:44,244 INFO L432 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:51:44,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:51:44,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 05:51:44,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 05:51:44,446 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_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertCodeBlock(IncrementalHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:278) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:385) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) 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$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 36 more [2024-11-09 05:51:44,451 INFO L158 Benchmark]: Toolchain (without parser) took 576748.44ms. Allocated memory was 184.5MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 153.5MB in the beginning and 775.0MB in the end (delta: -621.4MB). Peak memory consumption was 761.2MB. Max. memory is 16.1GB. [2024-11-09 05:51:44,451 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 115.3MB. Free memory is still 61.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:51:44,451 INFO L158 Benchmark]: CACSL2BoogieTranslator took 789.81ms. Allocated memory is still 184.5MB. Free memory was 153.0MB in the beginning and 130.5MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-09 05:51:44,451 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.41ms. Allocated memory is still 184.5MB. Free memory was 130.5MB in the beginning and 128.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:51:44,451 INFO L158 Benchmark]: Boogie Preprocessor took 35.66ms. Allocated memory is still 184.5MB. Free memory was 128.5MB in the beginning and 126.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:51:44,456 INFO L158 Benchmark]: RCFGBuilder took 651.10ms. Allocated memory is still 184.5MB. Free memory was 126.9MB in the beginning and 109.1MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-09 05:51:44,456 INFO L158 Benchmark]: TraceAbstraction took 575204.98ms. Allocated memory was 184.5MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 108.6MB in the beginning and 775.0MB in the end (delta: -666.4MB). Peak memory consumption was 717.2MB. Max. memory is 16.1GB. [2024-11-09 05:51:44,457 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 115.3MB. Free memory is still 61.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 789.81ms. Allocated memory is still 184.5MB. Free memory was 153.0MB in the beginning and 130.5MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.41ms. Allocated memory is still 184.5MB. Free memory was 130.5MB in the beginning and 128.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.66ms. Allocated memory is still 184.5MB. Free memory was 128.5MB in the beginning and 126.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 651.10ms. Allocated memory is still 184.5MB. Free memory was 126.9MB in the beginning and 109.1MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 575204.98ms. Allocated memory was 184.5MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 108.6MB in the beginning and 775.0MB in the end (delta: -666.4MB). Peak memory consumption was 717.2MB. 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_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-memleak_nexttime.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0176377c3fa036d8b42b70bf41d842353f196a854b997aa0bf5f176a7ad1942b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:51:46,940 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:51:47,055 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2024-11-09 05:51:47,064 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:51:47,067 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:51:47,109 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:51:47,109 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:51:47,110 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:51:47,111 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:51:47,112 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:51:47,113 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:51:47,113 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:51:47,113 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:51:47,114 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:51:47,114 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:51:47,116 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:51:47,117 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 05:51:47,117 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 05:51:47,118 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:51:47,118 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:51:47,122 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:51:47,122 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:51:47,122 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:51:47,123 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 05:51:47,123 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 05:51:47,123 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 05:51:47,123 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:51:47,124 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 05:51:47,124 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-09 05:51:47,124 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:51:47,124 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-09 05:51:47,125 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 05:51:47,125 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:51:47,125 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:51:47,125 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:51:47,127 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 05:51:47,128 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:51:47,128 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:51:47,129 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:51:47,129 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:51:47,129 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:51:47,130 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-09 05:51:47,137 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-09 05:51:47,138 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:51:47,138 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:51:47,138 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0176377c3fa036d8b42b70bf41d842353f196a854b997aa0bf5f176a7ad1942b [2024-11-09 05:51:47,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:51:47,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:51:47,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:51:47,550 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:51:47,551 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:51:47,553 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/memsafety/test-memleak_nexttime.i Unable to find full path for "g++" [2024-11-09 05:51:49,686 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:51:50,004 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:51:50,005 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/sv-benchmarks/c/memsafety/test-memleak_nexttime.i [2024-11-09 05:51:50,019 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/data/0d6491643/a44896399bd846be92c78c44c32f92de/FLAG3a246db36 [2024-11-09 05:51:50,038 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/data/0d6491643/a44896399bd846be92c78c44c32f92de [2024-11-09 05:51:50,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:51:50,042 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:51:50,043 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:51:50,043 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:51:50,049 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:51:50,050 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:51:50" (1/1) ... [2024-11-09 05:51:50,051 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@510f7c1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:51:50, skipping insertion in model container [2024-11-09 05:51:50,052 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:51:50" (1/1) ... [2024-11-09 05:51:50,099 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:51:50,622 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 05:51:50,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:51:50,656 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:51:50,729 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:51:50,802 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:51:50,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:51:50 WrapperNode [2024-11-09 05:51:50,803 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:51:50,804 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:51:50,805 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:51:50,805 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:51:50,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:51:50" (1/1) ... [2024-11-09 05:51:50,845 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:51:50" (1/1) ... [2024-11-09 05:51:50,889 INFO L138 Inliner]: procedures = 182, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2024-11-09 05:51:50,891 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:51:50,892 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:51:50,893 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:51:50,893 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:51:50,903 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:51:50" (1/1) ... [2024-11-09 05:51:50,903 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:51:50" (1/1) ... [2024-11-09 05:51:50,907 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:51:50" (1/1) ... [2024-11-09 05:51:50,911 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:51:50" (1/1) ... [2024-11-09 05:51:50,924 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:51:50" (1/1) ... [2024-11-09 05:51:50,927 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:51:50" (1/1) ... [2024-11-09 05:51:50,929 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:51:50" (1/1) ... [2024-11-09 05:51:50,931 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:51:50" (1/1) ... [2024-11-09 05:51:50,934 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:51:50,935 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:51:50,935 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:51:50,935 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:51:50,940 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:51:50" (1/1) ... [2024-11-09 05:51:50,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:51:50,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:51:50,977 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:51:50,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:51:51,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2024-11-09 05:51:51,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-09 05:51:51,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2024-11-09 05:51:51,020 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2024-11-09 05:51:51,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2024-11-09 05:51:51,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 05:51:51,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:51:51,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 05:51:51,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 05:51:51,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 05:51:51,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 05:51:51,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-09 05:51:51,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2024-11-09 05:51:51,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:51:51,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:51:51,204 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:51:51,206 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:51:51,213 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-09 05:51:51,590 INFO L? ?]: Removed 32 outVars from TransFormulas that were not future-live. [2024-11-09 05:51:51,590 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:51:51,603 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:51:51,603 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 05:51:51,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:51:51 BoogieIcfgContainer [2024-11-09 05:51:51,604 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:51:51,606 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:51:51,606 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:51:51,610 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:51:51,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:51:50" (1/3) ... [2024-11-09 05:51:51,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1afeb4aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:51:51, skipping insertion in model container [2024-11-09 05:51:51,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:51:50" (2/3) ... [2024-11-09 05:51:51,612 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1afeb4aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:51:51, skipping insertion in model container [2024-11-09 05:51:51,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:51:51" (3/3) ... [2024-11-09 05:51:51,614 INFO L112 eAbstractionObserver]: Analyzing ICFG test-memleak_nexttime.i [2024-11-09 05:51:51,635 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:51:51,635 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-11-09 05:51:51,699 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:51:51,709 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@51247e2c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:51:51,711 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-09 05:51:51,716 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 30 states have internal predecessors, (32), 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) [2024-11-09 05:51:51,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-09 05:51:51,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:51:51,729 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-09 05:51:51,731 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 05:51:51,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:51:51,742 INFO L85 PathProgramCache]: Analyzing trace with hash 44752, now seen corresponding path program 1 times [2024-11-09 05:51:51,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:51:51,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [931147434] [2024-11-09 05:51:51,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:51:51,763 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 [2024-11-09 05:51:51,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:51:51,767 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:51:51,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:51:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:51:51,895 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 05:51:51,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:51:52,063 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 18 treesize of output 10 [2024-11-09 05:51:52,150 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-09 05:51:52,151 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 [2024-11-09 05:51:52,270 INFO L349 Elim1Store]: treesize reduction 54, result has 18.2 percent of original size [2024-11-09 05:51:52,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 31 [2024-11-09 05:51:52,297 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 20 treesize of output 12 [2024-11-09 05:51:52,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:51:52,340 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:51:52,341 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:51:52,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [931147434] [2024-11-09 05:51:52,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [931147434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:51:52,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:51:52,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 05:51:52,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296397204] [2024-11-09 05:51:52,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:51:52,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:51:52,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:51:52,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:51:52,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:51:52,401 INFO L87 Difference]: Start difference. First operand has 34 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 30 states have internal predecessors, (32), 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), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:51:52,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:51:52,517 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2024-11-09 05:51:52,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:51:52,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-09 05:51:52,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:51:52,537 INFO L225 Difference]: With dead ends: 39 [2024-11-09 05:51:52,538 INFO L226 Difference]: Without dead ends: 37 [2024-11-09 05:51:52,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:51:52,546 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 12 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:51:52,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 44 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:51:52,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-09 05:51:52,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-09 05:51:52,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 32 states have internal predecessors, (36), 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) [2024-11-09 05:51:52,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2024-11-09 05:51:52,620 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 3 [2024-11-09 05:51:52,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:51:52,622 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2024-11-09 05:51:52,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:51:52,623 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2024-11-09 05:51:52,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-09 05:51:52,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:51:52,624 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-09 05:51:52,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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)] Ended with exit code 0 [2024-11-09 05:51:52,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:51:52,829 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 05:51:52,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:51:52,832 INFO L85 PathProgramCache]: Analyzing trace with hash 44753, now seen corresponding path program 1 times [2024-11-09 05:51:52,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:51:52,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563167098] [2024-11-09 05:51:52,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:51:52,833 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 [2024-11-09 05:51:52,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:51:52,844 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:51:52,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:51:52,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:51:52,943 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:51:52,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:51:52,954 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 13 treesize of output 9 [2024-11-09 05:51:52,979 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-09 05:51:52,979 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 1 case distinctions, treesize of input 9 treesize of output 15 [2024-11-09 05:51:53,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:51:53,005 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:51:53,005 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:51:53,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1563167098] [2024-11-09 05:51:53,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1563167098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:51:53,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:51:53,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:51:53,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715769065] [2024-11-09 05:51:53,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:51:53,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:51:53,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:51:53,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:51:53,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:51:53,010 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:51:53,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:51:53,081 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2024-11-09 05:51:53,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:51:53,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-09 05:51:53,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:51:53,083 INFO L225 Difference]: With dead ends: 36 [2024-11-09 05:51:53,083 INFO L226 Difference]: Without dead ends: 36 [2024-11-09 05:51:53,083 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:51:53,085 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:51:53,086 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 46 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:51:53,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-09 05:51:53,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-09 05:51:53,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 31 states have internal predecessors, (35), 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) [2024-11-09 05:51:53,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2024-11-09 05:51:53,096 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 3 [2024-11-09 05:51:53,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:51:53,097 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2024-11-09 05:51:53,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:51:53,098 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2024-11-09 05:51:53,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-09 05:51:53,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:51:53,101 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-09 05:51:53,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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)] Forceful destruction successful, exit code 0 [2024-11-09 05:51:53,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:51:53,302 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 05:51:53,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:51:53,310 INFO L85 PathProgramCache]: Analyzing trace with hash 44754, now seen corresponding path program 1 times [2024-11-09 05:51:53,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:51:53,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [23410670] [2024-11-09 05:51:53,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:51:53,315 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 [2024-11-09 05:51:53,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:51:53,319 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:51:53,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:51:53,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:51:53,394 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:51:53,400 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:51:53,547 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 18 treesize of output 10 [2024-11-09 05:51:53,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:51:53,562 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 12 treesize of output 14 [2024-11-09 05:51:53,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:51:53,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-09 05:51:53,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:51:53,658 INFO L349 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2024-11-09 05:51:53,659 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 1 case distinctions, treesize of input 21 treesize of output 26 [2024-11-09 05:51:53,680 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 19 [2024-11-09 05:51:53,709 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 05:51:53,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-09 05:51:53,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:51:53,818 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:51:53,819 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:51:53,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [23410670] [2024-11-09 05:51:53,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [23410670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:51:53,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:51:53,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:51:53,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944103277] [2024-11-09 05:51:53,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:51:53,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:51:53,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:51:53,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:51:53,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:51:53,823 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:51:54,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:51:54,050 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2024-11-09 05:51:54,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:51:54,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-09 05:51:54,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:51:54,052 INFO L225 Difference]: With dead ends: 35 [2024-11-09 05:51:54,052 INFO L226 Difference]: Without dead ends: 35 [2024-11-09 05:51:54,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:51:54,057 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 17 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:51:54,058 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 54 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:51:54,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-09 05:51:54,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-09 05:51:54,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 30 states have internal predecessors, (34), 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) [2024-11-09 05:51:54,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2024-11-09 05:51:54,064 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 3 [2024-11-09 05:51:54,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:51:54,065 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2024-11-09 05:51:54,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:51:54,066 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2024-11-09 05:51:54,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-09 05:51:54,066 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:51:54,066 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-09 05:51:54,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:51:54,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:51:54,268 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 05:51:54,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:51:54,268 INFO L85 PathProgramCache]: Analyzing trace with hash 44755, now seen corresponding path program 1 times [2024-11-09 05:51:54,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:51:54,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862618041] [2024-11-09 05:51:54,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:51:54,270 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 [2024-11-09 05:51:54,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:51:54,274 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:51:54,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:51:54,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:51:54,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 05:51:54,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:51:54,370 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 32 treesize of output 20 [2024-11-09 05:51:54,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:51:54,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 5 [2024-11-09 05:51:54,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-09 05:51:54,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:51:54,411 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:51:54,411 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:51:54,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862618041] [2024-11-09 05:51:54,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862618041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:51:54,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:51:54,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:51:54,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430124244] [2024-11-09 05:51:54,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:51:54,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:51:54,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:51:54,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:51:54,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:51:54,414 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:51:54,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:51:54,466 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2024-11-09 05:51:54,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:51:54,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-09 05:51:54,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:51:54,468 INFO L225 Difference]: With dead ends: 34 [2024-11-09 05:51:54,468 INFO L226 Difference]: Without dead ends: 34 [2024-11-09 05:51:54,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:51:54,470 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:51:54,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 48 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:51:54,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-09 05:51:54,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-09 05:51:54,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 29 states have internal predecessors, (33), 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) [2024-11-09 05:51:54,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2024-11-09 05:51:54,480 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 3 [2024-11-09 05:51:54,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:51:54,484 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2024-11-09 05:51:54,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:51:54,484 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2024-11-09 05:51:54,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 05:51:54,485 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:51:54,485 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:51:54,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-11-09 05:51:54,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:51:54,686 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 05:51:54,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:51:54,687 INFO L85 PathProgramCache]: Analyzing trace with hash 658165672, now seen corresponding path program 1 times [2024-11-09 05:51:54,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:51:54,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [104435139] [2024-11-09 05:51:54,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:51:54,688 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 [2024-11-09 05:51:54,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:51:54,689 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:51:54,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:51:54,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:51:54,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:51:54,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:51:54,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:51:54,831 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:51:54,833 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:51:54,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [104435139] [2024-11-09 05:51:54,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [104435139] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:51:54,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:51:54,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:51:54,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126758002] [2024-11-09 05:51:54,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:51:54,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:51:54,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:51:54,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:51:54,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:51:54,839 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:51:54,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:51:54,937 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2024-11-09 05:51:54,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:51:54,941 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-09 05:51:54,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:51:54,942 INFO L225 Difference]: With dead ends: 42 [2024-11-09 05:51:54,942 INFO L226 Difference]: Without dead ends: 36 [2024-11-09 05:51:54,942 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:51:54,943 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:51:54,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:51:54,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-09 05:51:54,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-09 05:51:54,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 31 states have internal predecessors, (35), 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) [2024-11-09 05:51:54,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2024-11-09 05:51:54,956 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 12 [2024-11-09 05:51:54,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:51:54,956 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2024-11-09 05:51:54,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:51:54,957 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2024-11-09 05:51:54,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 05:51:54,962 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:51:54,963 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:51:54,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:51:55,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:51:55,164 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 05:51:55,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:51:55,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1349907399, now seen corresponding path program 1 times [2024-11-09 05:51:55,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:51:55,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [254262010] [2024-11-09 05:51:55,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:51:55,165 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 [2024-11-09 05:51:55,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:51:55,167 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:51:55,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:51:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:51:55,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:51:55,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:51:55,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:51:55,333 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:51:55,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:51:55,455 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:51:55,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [254262010] [2024-11-09 05:51:55,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [254262010] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:51:55,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [240612418] [2024-11-09 05:51:55,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:51:55,457 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:51:55,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:51:55,464 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:51:55,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-09 05:51:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:51:55,616 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:51:55,617 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:51:55,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:51:55,670 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:51:55,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [240612418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:51:55,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 05:51:55,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2024-11-09 05:51:55,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276513517] [2024-11-09 05:51:55,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:51:55,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:51:55,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:51:55,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:51:55,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 05:51:55,678 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2024-11-09 05:51:55,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:51:55,765 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2024-11-09 05:51:55,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:51:55,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 [2024-11-09 05:51:55,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:51:55,767 INFO L225 Difference]: With dead ends: 42 [2024-11-09 05:51:55,767 INFO L226 Difference]: Without dead ends: 38 [2024-11-09 05:51:55,769 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 05:51:55,771 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:51:55,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:51:55,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-09 05:51:55,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-09 05:51:55,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.48) internal successors, (37), 33 states have internal predecessors, (37), 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) [2024-11-09 05:51:55,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2024-11-09 05:51:55,786 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 13 [2024-11-09 05:51:55,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:51:55,786 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2024-11-09 05:51:55,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2024-11-09 05:51:55,786 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2024-11-09 05:51:55,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 05:51:55,790 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:51:55,790 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:51:55,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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)] Forceful destruction successful, exit code 0 [2024-11-09 05:51:55,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2024-11-09 05:51:56,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 05:51:56,192 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 05:51:56,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:51:56,193 INFO L85 PathProgramCache]: Analyzing trace with hash -729962358, now seen corresponding path program 1 times [2024-11-09 05:51:56,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:51:56,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951657928] [2024-11-09 05:51:56,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:51:56,194 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 [2024-11-09 05:51:56,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:51:56,195 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:51:56,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-11-09 05:51:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:51:56,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:51:56,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:51:56,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:51:56,389 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:51:56,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:51:56,526 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:51:56,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951657928] [2024-11-09 05:51:56,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1951657928] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:51:56,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1552457595] [2024-11-09 05:51:56,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:51:56,531 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:51:56,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:51:56,535 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:51:56,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-11-09 05:51:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:51:56,723 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:51:56,728 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:51:56,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:51:56,750 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:51:56,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:51:56,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1552457595] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:51:56,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858600670] [2024-11-09 05:51:56,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:51:56,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:51:56,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:51:56,800 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:51:56,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 05:51:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:51:56,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:51:56,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:51:56,919 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 [2024-11-09 05:51:56,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:51:56,935 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:51:56,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858600670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:51:56,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2024-11-09 05:51:56,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5, 5, 5] total 9 [2024-11-09 05:51:56,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654361724] [2024-11-09 05:51:56,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:51:56,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:51:56,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:51:56,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:51:56,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-09 05:51:56,939 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:51:56,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:51:56,993 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2024-11-09 05:51:56,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:51:56,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-11-09 05:51:56,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:51:56,995 INFO L225 Difference]: With dead ends: 36 [2024-11-09 05:51:56,995 INFO L226 Difference]: Without dead ends: 36 [2024-11-09 05:51:56,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-09 05:51:56,996 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 9 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:51:56,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 30 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:51:56,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-09 05:51:57,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-09 05:51:57,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.4) internal successors, (35), 31 states have internal predecessors, (35), 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) [2024-11-09 05:51:57,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2024-11-09 05:51:57,002 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 14 [2024-11-09 05:51:57,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:51:57,002 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2024-11-09 05:51:57,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:51:57,003 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2024-11-09 05:51:57,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 05:51:57,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:51:57,003 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:51:57,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2024-11-09 05:51:57,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 05:51:57,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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)] Forceful destruction successful, exit code 0 [2024-11-09 05:51:57,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:51:57,605 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 05:51:57,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:51:57,605 INFO L85 PathProgramCache]: Analyzing trace with hash -729962357, now seen corresponding path program 1 times [2024-11-09 05:51:57,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:51:57,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929041740] [2024-11-09 05:51:57,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:51:57,606 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 [2024-11-09 05:51:57,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:51:57,607 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:51:57,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:51:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:51:57,694 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:51:57,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:51:57,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:51:57,728 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:51:57,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:51:57,806 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:51:57,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929041740] [2024-11-09 05:51:57,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1929041740] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:51:57,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1365125796] [2024-11-09 05:51:57,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:51:57,807 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:51:57,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:51:57,810 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:51:57,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2024-11-09 05:51:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:51:57,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:51:57,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:51:58,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:51:58,007 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:51:58,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:51:58,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1365125796] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:51:58,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348942604] [2024-11-09 05:51:58,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:51:58,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:51:58,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:51:58,051 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:51:58,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 05:51:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:51:58,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:51:58,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:51:58,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:51:58,187 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:51:58,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:51:58,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348942604] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:51:58,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 05:51:58,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2024-11-09 05:51:58,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131250628] [2024-11-09 05:51:58,233 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 05:51:58,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 05:51:58,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:51:58,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 05:51:58,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:51:58,235 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:51:58,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:51:58,436 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2024-11-09 05:51:58,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 05:51:58,437 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2024-11-09 05:51:58,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:51:58,437 INFO L225 Difference]: With dead ends: 58 [2024-11-09 05:51:58,437 INFO L226 Difference]: Without dead ends: 42 [2024-11-09 05:51:58,438 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-09 05:51:58,438 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:51:58,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:51:58,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-09 05:51:58,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-09 05:51:58,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 37 states have internal predecessors, (41), 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) [2024-11-09 05:51:58,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2024-11-09 05:51:58,448 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 14 [2024-11-09 05:51:58,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:51:58,448 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2024-11-09 05:51:58,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:51:58,448 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2024-11-09 05:51:58,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 05:51:58,451 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:51:58,451 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:51:58,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2024-11-09 05:51:58,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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)] Forceful destruction successful, exit code 0 [2024-11-09 05:51:58,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 05:51:59,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:51:59,053 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 05:51:59,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:51:59,053 INFO L85 PathProgramCache]: Analyzing trace with hash 555073212, now seen corresponding path program 2 times [2024-11-09 05:51:59,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:51:59,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381943674] [2024-11-09 05:51:59,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 05:51:59,054 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 [2024-11-09 05:51:59,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:51:59,055 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:51:59,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:51:59,153 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 05:51:59,153 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:51:59,155 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 05:51:59,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:51:59,201 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 30 treesize of output 18 [2024-11-09 05:51:59,245 INFO L349 Elim1Store]: treesize reduction 40, result has 28.6 percent of original size [2024-11-09 05:51:59,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 24 [2024-11-09 05:51:59,412 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 13 [2024-11-09 05:51:59,440 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-09 05:51:59,441 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 [2024-11-09 05:51:59,454 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 05:51:59,454 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:51:59,454 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:51:59,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381943674] [2024-11-09 05:51:59,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [381943674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:51:59,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:51:59,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:51:59,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269885795] [2024-11-09 05:51:59,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:51:59,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 05:51:59,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:51:59,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 05:51:59,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:51:59,457 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:51:59,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:51:59,604 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2024-11-09 05:51:59,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:51:59,605 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-09 05:51:59,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:51:59,605 INFO L225 Difference]: With dead ends: 41 [2024-11-09 05:51:59,605 INFO L226 Difference]: Without dead ends: 41 [2024-11-09 05:51:59,606 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:51:59,606 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 31 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:51:59,607 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 42 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:51:59,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-09 05:51:59,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-11-09 05:51:59,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 36 states have internal predecessors, (40), 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) [2024-11-09 05:51:59,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2024-11-09 05:51:59,624 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 17 [2024-11-09 05:51:59,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:51:59,625 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2024-11-09 05:51:59,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:51:59,625 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2024-11-09 05:51:59,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 05:51:59,626 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:51:59,626 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:51:59,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-11-09 05:51:59,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:51:59,829 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 05:51:59,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:51:59,830 INFO L85 PathProgramCache]: Analyzing trace with hash 555073213, now seen corresponding path program 1 times [2024-11-09 05:51:59,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:51:59,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953176264] [2024-11-09 05:51:59,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:51:59,830 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 [2024-11-09 05:51:59,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:51:59,832 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:51:59,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:51:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:51:59,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:51:59,955 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:51:59,965 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 [2024-11-09 05:51:59,978 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 05:51:59,979 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:51:59,979 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:51:59,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1953176264] [2024-11-09 05:51:59,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1953176264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:51:59,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:51:59,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:51:59,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111680560] [2024-11-09 05:51:59,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:51:59,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:51:59,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:51:59,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:51:59,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:51:59,981 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:52:00,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:52:00,016 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2024-11-09 05:52:00,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:52:00,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-09 05:52:00,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:52:00,018 INFO L225 Difference]: With dead ends: 39 [2024-11-09 05:52:00,021 INFO L226 Difference]: Without dead ends: 39 [2024-11-09 05:52:00,021 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:52:00,022 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 2 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:52:00,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 38 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:52:00,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-09 05:52:00,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-09 05:52:00,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 34 states have internal predecessors, (38), 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) [2024-11-09 05:52:00,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2024-11-09 05:52:00,026 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 17 [2024-11-09 05:52:00,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:52:00,027 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2024-11-09 05:52:00,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:52:00,027 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2024-11-09 05:52:00,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 05:52:00,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:52:00,028 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:52:00,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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)] Forceful destruction successful, exit code 0 [2024-11-09 05:52:00,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:52:00,229 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 05:52:00,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:52:00,229 INFO L85 PathProgramCache]: Analyzing trace with hash 555073214, now seen corresponding path program 1 times [2024-11-09 05:52:00,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:52:00,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056868000] [2024-11-09 05:52:00,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:52:00,230 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 [2024-11-09 05:52:00,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:52:00,234 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:52:00,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:52:00,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:52:00,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 05:52:00,423 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:52:00,741 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-09 05:52:00,741 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 12 treesize of output 18 [2024-11-09 05:52:00,820 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 05:52:00,820 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:52:00,820 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:52:00,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056868000] [2024-11-09 05:52:00,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056868000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:52:00,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:52:00,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:52:00,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329107970] [2024-11-09 05:52:00,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:52:00,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:52:00,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:52:00,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:52:00,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:52:00,822 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:52:00,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:52:00,975 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2024-11-09 05:52:00,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:52:00,977 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-09 05:52:00,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:52:00,978 INFO L225 Difference]: With dead ends: 38 [2024-11-09 05:52:00,978 INFO L226 Difference]: Without dead ends: 38 [2024-11-09 05:52:00,978 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:52:00,979 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 20 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:52:00,979 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 22 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:52:00,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-09 05:52:00,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-09 05:52:00,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 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) [2024-11-09 05:52:00,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2024-11-09 05:52:00,983 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 17 [2024-11-09 05:52:00,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:52:00,988 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2024-11-09 05:52:00,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:52:00,988 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2024-11-09 05:52:00,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 05:52:00,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:52:00,989 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:52:00,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2024-11-09 05:52:01,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:52:01,189 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 05:52:01,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:52:01,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1978376583, now seen corresponding path program 1 times [2024-11-09 05:52:01,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:52:01,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953169667] [2024-11-09 05:52:01,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:52:01,191 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 [2024-11-09 05:52:01,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:52:01,194 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:52:01,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:52:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:52:01,483 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-09 05:52:01,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:52:01,560 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 24 treesize of output 12 [2024-11-09 05:52:01,596 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-09 05:52:01,597 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 21 treesize of output 20 [2024-11-09 05:52:01,668 INFO L349 Elim1Store]: treesize reduction 65, result has 9.7 percent of original size [2024-11-09 05:52:01,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 16 [2024-11-09 05:52:01,682 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 [2024-11-09 05:52:02,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:52:02,486 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 21 treesize of output 21 [2024-11-09 05:52:02,492 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 7 [2024-11-09 05:52:02,587 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 13 [2024-11-09 05:52:02,746 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 05:52:02,746 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 [2024-11-09 05:52:03,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:52:03,581 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2024-11-09 05:52:03,582 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 1 case distinctions, treesize of input 28 treesize of output 35 [2024-11-09 05:52:03,621 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 7 [2024-11-09 05:52:03,733 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:52:03,734 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:52:04,016 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:52:04,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1953169667] [2024-11-09 05:52:04,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1953169667] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:52:04,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2049047500] [2024-11-09 05:52:04,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:52:04,017 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:52:04,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:52:04,018 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:52:04,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2024-11-09 05:52:04,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:52:04,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-09 05:52:04,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:52:04,719 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 05:52:04,719 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 [2024-11-09 05:52:05,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:52:05,214 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 21 treesize of output 21 [2024-11-09 05:52:05,226 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 7 [2024-11-09 05:52:05,255 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 13 [2024-11-09 05:52:05,352 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 05:52:05,352 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 [2024-11-09 05:52:05,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:52:05,831 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2024-11-09 05:52:05,832 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 1 case distinctions, treesize of input 28 treesize of output 35 [2024-11-09 05:52:05,859 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 7 [2024-11-09 05:52:05,883 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 05:52:05,884 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:52:06,053 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_466 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#p~1#1.base| v_ArrVal_466) |c_~#a~0.base|) |c_~#a~0.offset|) (_ bv0 32))) is different from false [2024-11-09 05:52:06,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2049047500] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:52:06,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611293931] [2024-11-09 05:52:06,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:52:06,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:52:06,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:52:06,059 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:52:06,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 05:52:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:52:06,238 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-09 05:52:06,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:52:06,279 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 05:52:06,279 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 [2024-11-09 05:52:06,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:52:06,734 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 21 treesize of output 21 [2024-11-09 05:52:06,746 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 7 [2024-11-09 05:52:06,775 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 13 [2024-11-09 05:52:06,873 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 05:52:06,874 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 [2024-11-09 05:52:07,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:52:07,335 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2024-11-09 05:52:07,336 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 1 case distinctions, treesize of input 28 treesize of output 35 [2024-11-09 05:52:07,360 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 7 [2024-11-09 05:52:07,397 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 05:52:07,397 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:52:07,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611293931] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:52:07,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:52:07,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 15] total 18 [2024-11-09 05:52:07,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839095652] [2024-11-09 05:52:07,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:52:07,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 05:52:07,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:52:07,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 05:52:07,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=369, Unknown=28, NotChecked=40, Total=506 [2024-11-09 05:52:07,614 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 20 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 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) [2024-11-09 05:52:10,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:52:15,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:52:16,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:52:16,201 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2024-11-09 05:52:16,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 05:52:16,201 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 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 31 [2024-11-09 05:52:16,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:52:16,204 INFO L225 Difference]: With dead ends: 57 [2024-11-09 05:52:16,204 INFO L226 Difference]: Without dead ends: 57 [2024-11-09 05:52:16,205 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 74 SyntacticMatches, 7 SemanticMatches, 37 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=194, Invalid=1159, Unknown=57, NotChecked=72, Total=1482 [2024-11-09 05:52:16,206 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 36 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 19 mSolverCounterUnsat, 32 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 32 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:52:16,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 98 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 259 Invalid, 32 Unknown, 0 Unchecked, 6.6s Time] [2024-11-09 05:52:16,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-09 05:52:16,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2024-11-09 05:52:16,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 43 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 05:52:16,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2024-11-09 05:52:16,213 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 31 [2024-11-09 05:52:16,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:52:16,214 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2024-11-09 05:52:16,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 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) [2024-11-09 05:52:16,217 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2024-11-09 05:52:16,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-09 05:52:16,218 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:52:16,218 INFO L215 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:52:16,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-09 05:52:16,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2024-11-09 05:52:16,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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)] Forceful destruction successful, exit code 0 [2024-11-09 05:52:16,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:52:16,820 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 05:52:16,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:52:16,820 INFO L85 PathProgramCache]: Analyzing trace with hash -459313580, now seen corresponding path program 2 times [2024-11-09 05:52:16,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:52:16,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1367489705] [2024-11-09 05:52:16,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 05:52:16,821 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 [2024-11-09 05:52:16,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:52:16,824 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:52:16,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:52:17,055 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 05:52:17,055 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:52:17,066 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:52:17,068 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:52:17,152 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-09 05:52:17,152 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:52:17,293 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-09 05:52:17,293 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:52:17,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1367489705] [2024-11-09 05:52:17,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1367489705] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:52:17,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1739883417] [2024-11-09 05:52:17,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 05:52:17,294 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:52:17,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:52:17,298 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:52:17,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2024-11-09 05:52:17,632 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 05:52:17,632 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:52:17,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:52:17,637 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:52:17,662 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-09 05:52:17,662 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:52:17,724 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-09 05:52:17,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1739883417] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:52:17,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46860851] [2024-11-09 05:52:17,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 05:52:17,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:52:17,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:52:17,727 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:52:17,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-09 05:52:17,930 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 05:52:17,930 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:52:17,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:52:17,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:52:17,983 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-09 05:52:17,983 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:52:18,069 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-09 05:52:18,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46860851] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:52:18,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 05:52:18,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2024-11-09 05:52:18,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764386547] [2024-11-09 05:52:18,071 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 05:52:18,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 05:52:18,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:52:18,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 05:52:18,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:52:18,073 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 05:52:18,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:52:18,280 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2024-11-09 05:52:18,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:52:18,280 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2024-11-09 05:52:18,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:52:18,282 INFO L225 Difference]: With dead ends: 43 [2024-11-09 05:52:18,282 INFO L226 Difference]: Without dead ends: 37 [2024-11-09 05:52:18,282 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:52:18,285 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 1 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:52:18,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 72 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:52:18,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-09 05:52:18,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-09 05:52:18,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 32 states have internal predecessors, (34), 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) [2024-11-09 05:52:18,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2024-11-09 05:52:18,290 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 32 [2024-11-09 05:52:18,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:52:18,290 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2024-11-09 05:52:18,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 05:52:18,291 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2024-11-09 05:52:18,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-09 05:52:18,292 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:52:18,292 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:52:18,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-09 05:52:18,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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)] Forceful destruction successful, exit code 0 [2024-11-09 05:52:18,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2024-11-09 05:52:18,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 05:52:18,897 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 05:52:18,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:52:18,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1200131997, now seen corresponding path program 1 times [2024-11-09 05:52:18,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:52:18,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1462686805] [2024-11-09 05:52:18,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:52:18,901 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 [2024-11-09 05:52:18,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:52:18,906 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:52:18,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:52:19,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:52:19,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-09 05:52:19,308 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:52:19,449 INFO L349 Elim1Store]: treesize reduction 52, result has 27.8 percent of original size [2024-11-09 05:52:19,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 28 [2024-11-09 05:52:19,528 INFO L349 Elim1Store]: treesize reduction 36, result has 30.8 percent of original size [2024-11-09 05:52:19,529 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 29 treesize of output 24 [2024-11-09 05:52:19,648 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 23 treesize of output 15 [2024-11-09 05:52:21,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:52:21,260 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 21 treesize of output 21 [2024-11-09 05:52:21,292 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 12 treesize of output 11 [2024-11-09 05:52:21,444 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 13 [2024-11-09 05:52:21,620 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 05:52:21,621 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 [2024-11-09 05:52:21,764 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-09 05:52:22,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:52:22,768 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2024-11-09 05:52:22,770 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 1 case distinctions, treesize of input 32 treesize of output 37 [2024-11-09 05:52:22,822 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 [2024-11-09 05:52:22,880 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 12 treesize of output 11 [2024-11-09 05:52:23,081 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2024-11-09 05:52:23,197 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 05:52:23,197 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:52:23,689 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:52:23,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1462686805] [2024-11-09 05:52:23,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1462686805] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:52:23,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [246675195] [2024-11-09 05:52:23,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:52:23,690 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:52:23,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:52:23,691 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:52:23,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2024-11-09 05:52:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:52:24,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-09 05:52:24,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:52:24,420 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 05:52:24,420 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 [2024-11-09 05:52:24,575 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 [2024-11-09 05:52:25,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:52:25,870 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 21 treesize of output 21 [2024-11-09 05:52:25,891 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 12 treesize of output 11 [2024-11-09 05:52:25,916 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 13 [2024-11-09 05:52:26,087 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 05:52:26,088 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 [2024-11-09 05:52:26,130 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-09 05:52:26,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:52:26,998 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2024-11-09 05:52:26,999 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 1 case distinctions, treesize of input 32 treesize of output 37 [2024-11-09 05:52:27,007 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 12 treesize of output 11 [2024-11-09 05:52:27,027 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 [2024-11-09 05:52:27,126 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2024-11-09 05:52:27,140 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 05:52:27,141 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:52:27,368 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_943 (Array (_ BitVec 32) (_ BitVec 32)))) (bvult (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#p~1#1.base| v_ArrVal_943) |c_~#a~0.base|) |c_~#a~0.offset|) |c_#StackHeapBarrier|)) is different from false [2024-11-09 05:52:27,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [246675195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:52:27,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074549458] [2024-11-09 05:52:27,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:52:27,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:52:27,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:52:27,373 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:52:27,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-09 05:52:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:52:27,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-09 05:52:27,598 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:52:27,663 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 05:52:27,663 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 [2024-11-09 05:52:27,684 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 [2024-11-09 05:52:28,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:52:28,487 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 21 treesize of output 21 [2024-11-09 05:52:28,505 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 12 treesize of output 11 [2024-11-09 05:52:28,557 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 13 [2024-11-09 05:52:28,713 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 05:52:28,713 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 [2024-11-09 05:52:28,941 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-09 05:52:30,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:52:30,813 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2024-11-09 05:52:30,814 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 1 case distinctions, treesize of input 32 treesize of output 37 [2024-11-09 05:52:30,833 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 [2024-11-09 05:52:30,892 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 12 treesize of output 11 [2024-11-09 05:52:31,195 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2024-11-09 05:52:31,533 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 1 proven. 42 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 05:52:31,533 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:52:31,771 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1030 (Array (_ BitVec 32) (_ BitVec 32)))) (bvult (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#p~1#1.base| v_ArrVal_1030) |c_~#a~0.base|) |c_~#a~0.offset|) |c_#StackHeapBarrier|)) is different from false [2024-11-09 05:52:31,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074549458] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:52:31,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:52:31,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 16] total 31 [2024-11-09 05:52:31,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163286197] [2024-11-09 05:52:31,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:52:31,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-09 05:52:31,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:52:31,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-09 05:52:31,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1012, Unknown=48, NotChecked=134, Total=1332 [2024-11-09 05:52:31,778 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 33 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 30 states have internal predecessors, (48), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 05:52:39,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:52:39,580 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2024-11-09 05:52:39,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 05:52:39,581 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 30 states have internal predecessors, (48), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 32 [2024-11-09 05:52:39,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:52:39,581 INFO L225 Difference]: With dead ends: 36 [2024-11-09 05:52:39,581 INFO L226 Difference]: Without dead ends: 36 [2024-11-09 05:52:39,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 69 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=345, Invalid=2555, Unknown=78, NotChecked=214, Total=3192 [2024-11-09 05:52:39,584 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 19 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 9 mSolverCounterUnsat, 41 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 41 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-09 05:52:39,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 128 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 437 Invalid, 41 Unknown, 0 Unchecked, 3.8s Time] [2024-11-09 05:52:39,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-09 05:52:39,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-09 05:52:39,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.1) internal successors, (33), 31 states have internal predecessors, (33), 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) [2024-11-09 05:52:39,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2024-11-09 05:52:39,589 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 32 [2024-11-09 05:52:39,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:52:39,590 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2024-11-09 05:52:39,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 30 states have internal predecessors, (48), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 05:52:39,590 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2024-11-09 05:52:39,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 05:52:39,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:52:39,591 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:52:39,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2024-11-09 05:52:39,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-09 05:52:39,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2024-11-09 05:52:40,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:52:40,193 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 05:52:40,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:52:40,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1450613687, now seen corresponding path program 1 times [2024-11-09 05:52:40,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:52:40,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [427057827] [2024-11-09 05:52:40,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:52:40,194 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 [2024-11-09 05:52:40,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:52:40,195 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:52:40,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c380e41-9cf1-420e-8de2-19a23a4f0ebc/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2024-11-09 05:52:40,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:52:40,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-09 05:52:40,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:52:40,692 INFO L349 Elim1Store]: treesize reduction 96, result has 22.0 percent of original size [2024-11-09 05:52:40,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 57 [2024-11-09 05:52:40,821 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 28 treesize of output 16 [2024-11-09 05:52:42,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:52:42,798 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 41 treesize of output 37 [2024-11-09 05:52:42,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2024-11-09 05:52:43,174 INFO L349 Elim1Store]: treesize reduction 76, result has 23.2 percent of original size [2024-11-09 05:52:43,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 66 [2024-11-09 05:52:45,248 INFO L349 Elim1Store]: treesize reduction 494, result has 28.3 percent of original size [2024-11-09 05:52:45,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 44 case distinctions, treesize of input 205 treesize of output 370