./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/list-ext_flag.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext_flag.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3747e65f01c1fbd6eb9d2ad39b0ceed8be631bde45acb074c0903963e660faab --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:00:59,594 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:00:59,658 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 01:00:59,663 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:00:59,664 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:00:59,691 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:00:59,692 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:00:59,693 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:00:59,693 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:00:59,694 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:00:59,695 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:00:59,695 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:00:59,696 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:00:59,697 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:00:59,697 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:00:59,698 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:00:59,698 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:00:59,699 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:00:59,699 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:00:59,700 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:00:59,701 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 01:00:59,701 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 01:00:59,702 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 01:00:59,702 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:00:59,703 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 01:00:59,703 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:00:59,704 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:00:59,704 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:00:59,705 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:00:59,705 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:00:59,706 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:00:59,706 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:00:59,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:00:59,707 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:00:59,707 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:00:59,707 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:00:59,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:00:59,708 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:00:59,708 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:00:59,708 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:00:59,708 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:00:59,709 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3747e65f01c1fbd6eb9d2ad39b0ceed8be631bde45acb074c0903963e660faab [2023-11-29 01:00:59,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:00:59,992 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:00:59,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:00:59,996 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:00:59,997 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:00:59,998 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/list-ext-properties/list-ext_flag.i [2023-11-29 01:01:02,725 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:01:02,988 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:01:02,989 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/sv-benchmarks/c/list-ext-properties/list-ext_flag.i [2023-11-29 01:01:03,004 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/data/b4b3a58ed/93fdfe19be40420ebf8fe5d1b496639a/FLAGd38973bd3 [2023-11-29 01:01:03,021 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/data/b4b3a58ed/93fdfe19be40420ebf8fe5d1b496639a [2023-11-29 01:01:03,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:01:03,025 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:01:03,027 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:01:03,027 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:01:03,034 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:01:03,035 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:01:03" (1/1) ... [2023-11-29 01:01:03,036 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65046055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:03, skipping insertion in model container [2023-11-29 01:01:03,036 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:01:03" (1/1) ... [2023-11-29 01:01:03,094 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:01:03,397 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:01:03,407 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:01:03,449 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:01:03,481 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:01:03,481 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:03 WrapperNode [2023-11-29 01:01:03,481 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:01:03,483 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:01:03,483 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:01:03,483 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:01:03,491 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:03" (1/1) ... [2023-11-29 01:01:03,505 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:03" (1/1) ... [2023-11-29 01:01:03,527 INFO L138 Inliner]: procedures = 119, calls = 32, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 127 [2023-11-29 01:01:03,528 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:01:03,529 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:01:03,529 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:01:03,529 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:01:03,541 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:03" (1/1) ... [2023-11-29 01:01:03,542 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:03" (1/1) ... [2023-11-29 01:01:03,546 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:03" (1/1) ... [2023-11-29 01:01:03,564 INFO L175 MemorySlicer]: Split 19 memory accesses to 2 slices as follows [2, 17]. 89 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 6 writes are split as follows [0, 6]. [2023-11-29 01:01:03,564 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:03" (1/1) ... [2023-11-29 01:01:03,564 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:03" (1/1) ... [2023-11-29 01:01:03,571 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:03" (1/1) ... [2023-11-29 01:01:03,574 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:03" (1/1) ... [2023-11-29 01:01:03,576 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:03" (1/1) ... [2023-11-29 01:01:03,577 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:03" (1/1) ... [2023-11-29 01:01:03,580 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:01:03,581 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:01:03,581 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:01:03,581 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:01:03,582 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:03" (1/1) ... [2023-11-29 01:01:03,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:01:03,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:01:03,612 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:01:03,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:01:03,646 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2023-11-29 01:01:03,646 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2023-11-29 01:01:03,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 01:01:03,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 01:01:03,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 01:01:03,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 01:01:03,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 01:01:03,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:01:03,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 01:01:03,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 01:01:03,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 01:01:03,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 01:01:03,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:01:03,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:01:03,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 01:01:03,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:01:03,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:01:03,745 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:01:03,747 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:01:03,787 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2023-11-29 01:01:04,073 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:01:04,107 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:01:04,108 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 01:01:04,108 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:01:04 BoogieIcfgContainer [2023-11-29 01:01:04,108 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:01:04,111 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:01:04,112 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:01:04,115 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:01:04,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:01:03" (1/3) ... [2023-11-29 01:01:04,116 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c8ddc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:01:04, skipping insertion in model container [2023-11-29 01:01:04,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:03" (2/3) ... [2023-11-29 01:01:04,117 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c8ddc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:01:04, skipping insertion in model container [2023-11-29 01:01:04,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:01:04" (3/3) ... [2023-11-29 01:01:04,118 INFO L112 eAbstractionObserver]: Analyzing ICFG list-ext_flag.i [2023-11-29 01:01:04,137 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:01:04,138 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 45 error locations. [2023-11-29 01:01:04,176 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:01:04,181 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@25427c30, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:01:04,182 INFO L358 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2023-11-29 01:01:04,185 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 50 states have (on average 2.24) internal successors, (112), 97 states have internal predecessors, (112), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:04,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-29 01:01:04,191 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:01:04,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-29 01:01:04,192 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:01:04,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:04,197 INFO L85 PathProgramCache]: Analyzing trace with hash 227215, now seen corresponding path program 1 times [2023-11-29 01:01:04,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:04,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197911617] [2023-11-29 01:01:04,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:04,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:04,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:04,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:04,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197911617] [2023-11-29 01:01:04,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197911617] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:04,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:01:04,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:01:04,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494209606] [2023-11-29 01:01:04,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:04,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:01:04,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:04,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:01:04,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:01:04,439 INFO L87 Difference]: Start difference. First operand has 99 states, 50 states have (on average 2.24) internal successors, (112), 97 states have internal predecessors, (112), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:04,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:01:04,561 INFO L93 Difference]: Finished difference Result 116 states and 128 transitions. [2023-11-29 01:01:04,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:01:04,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-29 01:01:04,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:01:04,571 INFO L225 Difference]: With dead ends: 116 [2023-11-29 01:01:04,571 INFO L226 Difference]: Without dead ends: 110 [2023-11-29 01:01:04,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:01:04,575 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 94 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:01:04,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 77 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:01:04,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-11-29 01:01:04,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 91. [2023-11-29 01:01:04,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 47 states have (on average 2.106382978723404) internal successors, (99), 90 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:04,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2023-11-29 01:01:04,614 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 3 [2023-11-29 01:01:04,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:01:04,614 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2023-11-29 01:01:04,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:04,615 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2023-11-29 01:01:04,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-29 01:01:04,615 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:01:04,615 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-29 01:01:04,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:01:04,616 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:01:04,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:04,617 INFO L85 PathProgramCache]: Analyzing trace with hash 227216, now seen corresponding path program 1 times [2023-11-29 01:01:04,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:04,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81857389] [2023-11-29 01:01:04,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:04,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:04,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:04,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:04,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81857389] [2023-11-29 01:01:04,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81857389] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:04,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:01:04,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:01:04,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114443898] [2023-11-29 01:01:04,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:04,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:01:04,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:04,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:01:04,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:01:04,719 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:04,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:01:04,789 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2023-11-29 01:01:04,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:01:04,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-29 01:01:04,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:01:04,791 INFO L225 Difference]: With dead ends: 90 [2023-11-29 01:01:04,792 INFO L226 Difference]: Without dead ends: 90 [2023-11-29 01:01:04,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:01:04,794 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 95 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:01:04,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 61 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:01:04,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-29 01:01:04,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2023-11-29 01:01:04,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 47 states have (on average 2.0851063829787235) internal successors, (98), 89 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:04,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2023-11-29 01:01:04,804 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 3 [2023-11-29 01:01:04,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:01:04,805 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2023-11-29 01:01:04,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:04,805 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2023-11-29 01:01:04,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 01:01:04,806 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:01:04,806 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:04,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:01:04,807 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:01:04,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:04,807 INFO L85 PathProgramCache]: Analyzing trace with hash -437546213, now seen corresponding path program 1 times [2023-11-29 01:01:04,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:04,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377833265] [2023-11-29 01:01:04,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:04,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:04,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:04,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:04,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377833265] [2023-11-29 01:01:04,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377833265] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:04,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:01:04,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:01:04,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942249596] [2023-11-29 01:01:04,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:04,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:01:04,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:04,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:01:04,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:01:04,879 INFO L87 Difference]: Start difference. First operand 90 states and 98 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:04,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:01:04,980 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2023-11-29 01:01:04,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:01:04,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2023-11-29 01:01:04,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:01:04,982 INFO L225 Difference]: With dead ends: 85 [2023-11-29 01:01:04,982 INFO L226 Difference]: Without dead ends: 85 [2023-11-29 01:01:04,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:01:04,984 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 58 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:01:04,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 51 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:01:04,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-11-29 01:01:04,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2023-11-29 01:01:04,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 53 states have (on average 1.7924528301886793) internal successors, (95), 81 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:04,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 95 transitions. [2023-11-29 01:01:04,993 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 95 transitions. Word has length 7 [2023-11-29 01:01:04,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:01:04,993 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 95 transitions. [2023-11-29 01:01:04,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:04,994 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 95 transitions. [2023-11-29 01:01:04,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 01:01:04,994 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:01:04,994 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:04,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:01:04,995 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:01:04,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:04,995 INFO L85 PathProgramCache]: Analyzing trace with hash -437546212, now seen corresponding path program 1 times [2023-11-29 01:01:04,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:04,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994660979] [2023-11-29 01:01:04,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:04,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:05,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:05,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:05,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994660979] [2023-11-29 01:01:05,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994660979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:05,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:01:05,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:01:05,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961145431] [2023-11-29 01:01:05,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:05,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:01:05,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:05,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:01:05,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:01:05,137 INFO L87 Difference]: Start difference. First operand 82 states and 95 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:05,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:01:05,305 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2023-11-29 01:01:05,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:01:05,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2023-11-29 01:01:05,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:01:05,307 INFO L225 Difference]: With dead ends: 117 [2023-11-29 01:01:05,307 INFO L226 Difference]: Without dead ends: 117 [2023-11-29 01:01:05,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:01:05,309 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 175 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:01:05,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 57 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:01:05,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-11-29 01:01:05,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 102. [2023-11-29 01:01:05,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 75 states have (on average 1.5866666666666667) internal successors, (119), 101 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:05,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 119 transitions. [2023-11-29 01:01:05,317 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 119 transitions. Word has length 7 [2023-11-29 01:01:05,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:01:05,317 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 119 transitions. [2023-11-29 01:01:05,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:05,318 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 119 transitions. [2023-11-29 01:01:05,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-29 01:01:05,318 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:01:05,318 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:05,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:01:05,319 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:01:05,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:05,319 INFO L85 PathProgramCache]: Analyzing trace with hash -679026511, now seen corresponding path program 1 times [2023-11-29 01:01:05,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:05,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375806901] [2023-11-29 01:01:05,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:05,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:05,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:05,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:05,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:05,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375806901] [2023-11-29 01:01:05,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375806901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:05,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:01:05,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:01:05,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955814846] [2023-11-29 01:01:05,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:05,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:01:05,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:05,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:01:05,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:01:05,387 INFO L87 Difference]: Start difference. First operand 102 states and 119 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:05,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:01:05,516 INFO L93 Difference]: Finished difference Result 120 states and 135 transitions. [2023-11-29 01:01:05,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:01:05,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-29 01:01:05,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:01:05,518 INFO L225 Difference]: With dead ends: 120 [2023-11-29 01:01:05,518 INFO L226 Difference]: Without dead ends: 120 [2023-11-29 01:01:05,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:01:05,519 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 145 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:01:05,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 78 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:01:05,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-29 01:01:05,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 106. [2023-11-29 01:01:05,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 79 states have (on average 1.5696202531645569) internal successors, (124), 105 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:05,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 124 transitions. [2023-11-29 01:01:05,529 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 124 transitions. Word has length 8 [2023-11-29 01:01:05,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:01:05,534 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 124 transitions. [2023-11-29 01:01:05,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:05,535 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 124 transitions. [2023-11-29 01:01:05,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 01:01:05,536 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:01:05,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:05,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 01:01:05,536 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:01:05,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:05,537 INFO L85 PathProgramCache]: Analyzing trace with hash 84550381, now seen corresponding path program 1 times [2023-11-29 01:01:05,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:05,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861641819] [2023-11-29 01:01:05,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:05,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:05,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:05,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:05,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861641819] [2023-11-29 01:01:05,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861641819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:05,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:01:05,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:01:05,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614852553] [2023-11-29 01:01:05,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:05,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:01:05,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:05,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:01:05,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:01:05,646 INFO L87 Difference]: Start difference. First operand 106 states and 124 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:05,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:01:05,798 INFO L93 Difference]: Finished difference Result 151 states and 174 transitions. [2023-11-29 01:01:05,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:01:05,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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 14 [2023-11-29 01:01:05,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:01:05,802 INFO L225 Difference]: With dead ends: 151 [2023-11-29 01:01:05,802 INFO L226 Difference]: Without dead ends: 151 [2023-11-29 01:01:05,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:01:05,804 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 43 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:01:05,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 249 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:01:05,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-29 01:01:05,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 109. [2023-11-29 01:01:05,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 82 states have (on average 1.5609756097560976) internal successors, (128), 108 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:05,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 128 transitions. [2023-11-29 01:01:05,815 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 128 transitions. Word has length 14 [2023-11-29 01:01:05,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:01:05,816 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 128 transitions. [2023-11-29 01:01:05,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:05,816 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 128 transitions. [2023-11-29 01:01:05,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 01:01:05,817 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:01:05,817 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:05,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 01:01:05,817 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:01:05,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:05,818 INFO L85 PathProgramCache]: Analyzing trace with hash -837744419, now seen corresponding path program 1 times [2023-11-29 01:01:05,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:05,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245736208] [2023-11-29 01:01:05,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:05,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:05,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:05,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:05,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:05,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245736208] [2023-11-29 01:01:05,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245736208] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:05,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:01:05,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:01:05,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904224312] [2023-11-29 01:01:05,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:05,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:01:05,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:05,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:01:05,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:01:05,967 INFO L87 Difference]: Start difference. First operand 109 states and 128 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:06,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:01:06,186 INFO L93 Difference]: Finished difference Result 165 states and 183 transitions. [2023-11-29 01:01:06,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:01:06,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-29 01:01:06,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:01:06,188 INFO L225 Difference]: With dead ends: 165 [2023-11-29 01:01:06,188 INFO L226 Difference]: Without dead ends: 165 [2023-11-29 01:01:06,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:01:06,189 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 122 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:01:06,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 177 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:01:06,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-11-29 01:01:06,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 113. [2023-11-29 01:01:06,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 86 states have (on average 1.5465116279069768) internal successors, (133), 112 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:06,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 133 transitions. [2023-11-29 01:01:06,197 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 133 transitions. Word has length 15 [2023-11-29 01:01:06,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:01:06,197 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 133 transitions. [2023-11-29 01:01:06,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:06,198 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 133 transitions. [2023-11-29 01:01:06,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 01:01:06,199 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:01:06,199 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:06,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 01:01:06,199 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:01:06,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:06,200 INFO L85 PathProgramCache]: Analyzing trace with hash -847287149, now seen corresponding path program 1 times [2023-11-29 01:01:06,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:06,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945446676] [2023-11-29 01:01:06,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:06,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:06,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:06,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:06,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945446676] [2023-11-29 01:01:06,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945446676] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:06,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:01:06,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:01:06,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438807170] [2023-11-29 01:01:06,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:06,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:01:06,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:06,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:01:06,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:01:06,309 INFO L87 Difference]: Start difference. First operand 113 states and 133 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:06,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:01:06,503 INFO L93 Difference]: Finished difference Result 144 states and 160 transitions. [2023-11-29 01:01:06,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:01:06,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-29 01:01:06,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:01:06,505 INFO L225 Difference]: With dead ends: 144 [2023-11-29 01:01:06,505 INFO L226 Difference]: Without dead ends: 144 [2023-11-29 01:01:06,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:01:06,506 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 96 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:01:06,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 154 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:01:06,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-11-29 01:01:06,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 109. [2023-11-29 01:01:06,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 82 states have (on average 1.548780487804878) internal successors, (127), 108 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:06,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions. [2023-11-29 01:01:06,512 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 15 [2023-11-29 01:01:06,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:01:06,513 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 127 transitions. [2023-11-29 01:01:06,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:06,513 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions. [2023-11-29 01:01:06,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 01:01:06,513 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:01:06,514 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:06,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 01:01:06,514 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:01:06,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:06,514 INFO L85 PathProgramCache]: Analyzing trace with hash -341078209, now seen corresponding path program 1 times [2023-11-29 01:01:06,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:06,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535293159] [2023-11-29 01:01:06,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:06,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:06,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:06,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:06,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:06,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535293159] [2023-11-29 01:01:06,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535293159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:06,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:01:06,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:01:06,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484782154] [2023-11-29 01:01:06,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:06,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:01:06,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:06,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:01:06,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:01:06,577 INFO L87 Difference]: Start difference. First operand 109 states and 127 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:06,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:01:06,710 INFO L93 Difference]: Finished difference Result 118 states and 133 transitions. [2023-11-29 01:01:06,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:01:06,711 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-29 01:01:06,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:01:06,712 INFO L225 Difference]: With dead ends: 118 [2023-11-29 01:01:06,712 INFO L226 Difference]: Without dead ends: 118 [2023-11-29 01:01:06,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:01:06,713 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 154 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:01:06,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 79 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:01:06,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-11-29 01:01:06,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 110. [2023-11-29 01:01:06,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 84 states have (on average 1.5238095238095237) internal successors, (128), 109 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:06,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 128 transitions. [2023-11-29 01:01:06,719 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 128 transitions. Word has length 16 [2023-11-29 01:01:06,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:01:06,720 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 128 transitions. [2023-11-29 01:01:06,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:06,720 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 128 transitions. [2023-11-29 01:01:06,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 01:01:06,721 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:01:06,721 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:06,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 01:01:06,722 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:01:06,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:06,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1964115027, now seen corresponding path program 1 times [2023-11-29 01:01:06,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:06,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098961188] [2023-11-29 01:01:06,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:06,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:06,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:06,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:06,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098961188] [2023-11-29 01:01:06,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098961188] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:06,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:01:06,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:01:06,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282402075] [2023-11-29 01:01:06,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:06,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:01:06,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:06,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:01:06,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:01:06,872 INFO L87 Difference]: Start difference. First operand 110 states and 128 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:07,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:01:07,045 INFO L93 Difference]: Finished difference Result 120 states and 140 transitions. [2023-11-29 01:01:07,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:01:07,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-29 01:01:07,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:01:07,047 INFO L225 Difference]: With dead ends: 120 [2023-11-29 01:01:07,047 INFO L226 Difference]: Without dead ends: 120 [2023-11-29 01:01:07,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:01:07,048 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 115 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:01:07,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 115 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:01:07,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-29 01:01:07,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 108. [2023-11-29 01:01:07,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 84 states have (on average 1.5) internal successors, (126), 107 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:07,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 126 transitions. [2023-11-29 01:01:07,052 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 126 transitions. Word has length 18 [2023-11-29 01:01:07,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:01:07,052 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 126 transitions. [2023-11-29 01:01:07,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:07,052 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 126 transitions. [2023-11-29 01:01:07,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 01:01:07,053 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:01:07,053 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:07,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 01:01:07,054 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:01:07,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:07,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1964115026, now seen corresponding path program 1 times [2023-11-29 01:01:07,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:07,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330552425] [2023-11-29 01:01:07,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:07,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:07,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:07,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:07,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330552425] [2023-11-29 01:01:07,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330552425] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:07,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:01:07,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:01:07,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388095375] [2023-11-29 01:01:07,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:07,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:01:07,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:07,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:01:07,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:01:07,256 INFO L87 Difference]: Start difference. First operand 108 states and 126 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:07,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:01:07,464 INFO L93 Difference]: Finished difference Result 116 states and 135 transitions. [2023-11-29 01:01:07,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:01:07,464 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-29 01:01:07,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:01:07,465 INFO L225 Difference]: With dead ends: 116 [2023-11-29 01:01:07,465 INFO L226 Difference]: Without dead ends: 116 [2023-11-29 01:01:07,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:01:07,466 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 66 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:01:07,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 179 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:01:07,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-29 01:01:07,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 92. [2023-11-29 01:01:07,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 75 states have (on average 1.4533333333333334) internal successors, (109), 91 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:07,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 109 transitions. [2023-11-29 01:01:07,470 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 109 transitions. Word has length 18 [2023-11-29 01:01:07,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:01:07,470 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 109 transitions. [2023-11-29 01:01:07,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:07,470 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 109 transitions. [2023-11-29 01:01:07,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 01:01:07,471 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:01:07,471 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:07,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 01:01:07,471 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:01:07,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:07,472 INFO L85 PathProgramCache]: Analyzing trace with hash 831872926, now seen corresponding path program 1 times [2023-11-29 01:01:07,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:07,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819977816] [2023-11-29 01:01:07,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:07,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:07,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:07,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:07,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819977816] [2023-11-29 01:01:07,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819977816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:07,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:01:07,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:01:07,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568164210] [2023-11-29 01:01:07,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:07,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:01:07,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:07,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:01:07,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:01:07,569 INFO L87 Difference]: Start difference. First operand 92 states and 109 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:07,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:01:07,702 INFO L93 Difference]: Finished difference Result 133 states and 152 transitions. [2023-11-29 01:01:07,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:01:07,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-29 01:01:07,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:01:07,704 INFO L225 Difference]: With dead ends: 133 [2023-11-29 01:01:07,704 INFO L226 Difference]: Without dead ends: 123 [2023-11-29 01:01:07,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:01:07,705 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 78 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:01:07,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 168 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:01:07,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-11-29 01:01:07,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 97. [2023-11-29 01:01:07,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 80 states have (on average 1.425) internal successors, (114), 96 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:07,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 114 transitions. [2023-11-29 01:01:07,708 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 114 transitions. Word has length 19 [2023-11-29 01:01:07,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:01:07,709 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 114 transitions. [2023-11-29 01:01:07,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:07,709 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 114 transitions. [2023-11-29 01:01:07,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 01:01:07,710 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:01:07,710 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:07,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 01:01:07,710 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:01:07,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:07,711 INFO L85 PathProgramCache]: Analyzing trace with hash -758019489, now seen corresponding path program 1 times [2023-11-29 01:01:07,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:07,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940920876] [2023-11-29 01:01:07,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:07,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:07,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:07,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:07,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940920876] [2023-11-29 01:01:07,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940920876] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:01:07,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410401280] [2023-11-29 01:01:07,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:07,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:01:07,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:01:07,799 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:01:07,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:01:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:07,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:01:07,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:01:07,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:07,952 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:01:08,003 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-29 01:01:08,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2023-11-29 01:01:08,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:08,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410401280] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:01:08,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:01:08,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2023-11-29 01:01:08,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021483128] [2023-11-29 01:01:08,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:01:08,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:01:08,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:08,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:01:08,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:01:08,025 INFO L87 Difference]: Start difference. First operand 97 states and 114 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:08,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:01:08,139 INFO L93 Difference]: Finished difference Result 114 states and 129 transitions. [2023-11-29 01:01:08,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:01:08,140 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-29 01:01:08,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:01:08,141 INFO L225 Difference]: With dead ends: 114 [2023-11-29 01:01:08,141 INFO L226 Difference]: Without dead ends: 114 [2023-11-29 01:01:08,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:01:08,141 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 208 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:01:08,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 97 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:01:08,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-11-29 01:01:08,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 93. [2023-11-29 01:01:08,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 77 states have (on average 1.4025974025974026) internal successors, (108), 92 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:08,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 108 transitions. [2023-11-29 01:01:08,145 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 108 transitions. Word has length 19 [2023-11-29 01:01:08,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:01:08,145 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 108 transitions. [2023-11-29 01:01:08,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:08,146 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 108 transitions. [2023-11-29 01:01:08,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 01:01:08,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:01:08,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:08,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-29 01:01:08,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 01:01:08,352 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:01:08,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:08,352 INFO L85 PathProgramCache]: Analyzing trace with hash -983957516, now seen corresponding path program 1 times [2023-11-29 01:01:08,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:08,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668096527] [2023-11-29 01:01:08,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:08,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:08,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:08,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:08,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:08,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668096527] [2023-11-29 01:01:08,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668096527] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:08,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:01:08,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:01:08,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001259314] [2023-11-29 01:01:08,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:08,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:01:08,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:08,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:01:08,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:01:08,622 INFO L87 Difference]: Start difference. First operand 93 states and 108 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:08,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:01:08,806 INFO L93 Difference]: Finished difference Result 101 states and 116 transitions. [2023-11-29 01:01:08,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:01:08,806 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-29 01:01:08,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:01:08,807 INFO L225 Difference]: With dead ends: 101 [2023-11-29 01:01:08,807 INFO L226 Difference]: Without dead ends: 91 [2023-11-29 01:01:08,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:01:08,808 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 122 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:01:08,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 187 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:01:08,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-29 01:01:08,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 83. [2023-11-29 01:01:08,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 67 states have (on average 1.4477611940298507) internal successors, (97), 82 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:08,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 97 transitions. [2023-11-29 01:01:08,812 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 97 transitions. Word has length 21 [2023-11-29 01:01:08,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:01:08,812 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 97 transitions. [2023-11-29 01:01:08,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:08,812 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 97 transitions. [2023-11-29 01:01:08,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 01:01:08,813 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:01:08,813 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:08,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 01:01:08,814 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:01:08,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:08,814 INFO L85 PathProgramCache]: Analyzing trace with hash -764521957, now seen corresponding path program 1 times [2023-11-29 01:01:08,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:08,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599391363] [2023-11-29 01:01:08,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:08,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:08,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:08,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:08,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599391363] [2023-11-29 01:01:08,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599391363] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:01:08,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304680074] [2023-11-29 01:01:08,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:08,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:01:08,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:01:08,940 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:01:08,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:01:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:09,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 01:01:09,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:01:09,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:01:09,127 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:01:09,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304680074] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:09,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:01:09,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-29 01:01:09,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127462833] [2023-11-29 01:01:09,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:09,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:01:09,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:09,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:01:09,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:01:09,129 INFO L87 Difference]: Start difference. First operand 83 states and 97 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:09,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:01:09,255 INFO L93 Difference]: Finished difference Result 132 states and 151 transitions. [2023-11-29 01:01:09,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:01:09,256 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-11-29 01:01:09,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:01:09,257 INFO L225 Difference]: With dead ends: 132 [2023-11-29 01:01:09,257 INFO L226 Difference]: Without dead ends: 132 [2023-11-29 01:01:09,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:01:09,258 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 43 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:01:09,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 253 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:01:09,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-29 01:01:09,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 89. [2023-11-29 01:01:09,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 73 states have (on average 1.4246575342465753) internal successors, (104), 88 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:09,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 104 transitions. [2023-11-29 01:01:09,261 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 104 transitions. Word has length 25 [2023-11-29 01:01:09,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:01:09,262 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 104 transitions. [2023-11-29 01:01:09,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:09,262 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 104 transitions. [2023-11-29 01:01:09,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 01:01:09,263 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:01:09,263 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:09,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:01:09,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 01:01:09,465 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:01:09,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:09,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1157548967, now seen corresponding path program 1 times [2023-11-29 01:01:09,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:09,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019677106] [2023-11-29 01:01:09,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:09,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:09,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:09,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:09,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019677106] [2023-11-29 01:01:09,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019677106] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:01:09,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370690131] [2023-11-29 01:01:09,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:09,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:01:09,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:01:09,572 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:01:09,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:01:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:09,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:01:09,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:01:09,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:09,720 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:01:09,762 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:09,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370690131] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:01:09,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:01:09,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-11-29 01:01:09,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272999990] [2023-11-29 01:01:09,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:01:09,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:01:09,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:09,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:01:09,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:01:09,765 INFO L87 Difference]: Start difference. First operand 89 states and 104 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:09,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:01:09,964 INFO L93 Difference]: Finished difference Result 305 states and 351 transitions. [2023-11-29 01:01:09,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:01:09,965 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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 25 [2023-11-29 01:01:09,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:01:09,967 INFO L225 Difference]: With dead ends: 305 [2023-11-29 01:01:09,967 INFO L226 Difference]: Without dead ends: 305 [2023-11-29 01:01:09,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:01:09,968 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 164 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:01:09,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 469 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:01:09,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-11-29 01:01:09,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 124. [2023-11-29 01:01:09,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 108 states have (on average 1.3333333333333333) internal successors, (144), 123 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:09,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 144 transitions. [2023-11-29 01:01:09,974 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 144 transitions. Word has length 25 [2023-11-29 01:01:09,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:01:09,974 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 144 transitions. [2023-11-29 01:01:09,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:09,975 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 144 transitions. [2023-11-29 01:01:09,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-29 01:01:09,975 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:01:09,975 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:09,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:01:10,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 01:01:10,181 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:01:10,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:10,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1389183121, now seen corresponding path program 1 times [2023-11-29 01:01:10,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:10,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334817175] [2023-11-29 01:01:10,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:10,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:10,535 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:10,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:10,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334817175] [2023-11-29 01:01:10,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334817175] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:01:10,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293122236] [2023-11-29 01:01:10,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:10,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:01:10,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:01:10,537 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:01:10,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:01:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:10,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 01:01:10,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:01:10,781 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-29 01:01:10,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-29 01:01:10,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:01:10,974 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:01:10,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2023-11-29 01:01:11,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 01:01:11,097 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:11,098 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:01:11,132 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_452 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_452) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) 1)) is different from false [2023-11-29 01:01:11,155 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_452 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8)) v_ArrVal_452) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) 1)) is different from false [2023-11-29 01:01:11,166 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:01:11,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2023-11-29 01:01:11,178 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:01:11,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 39 [2023-11-29 01:01:11,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2023-11-29 01:01:12,599 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:01:12,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 150 treesize of output 748 [2023-11-29 01:07:16,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2023-11-29 01:07:16,459 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-11-29 01:07:16,460 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-11-29 01:07:16,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:07:16,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 01:07:16,661 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_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:268) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:410) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:394) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:500) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:252) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:731) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 69 more [2023-11-29 01:07:16,664 INFO L158 Benchmark]: Toolchain (without parser) took 373638.81ms. Allocated memory was 153.1MB in the beginning and 394.3MB in the end (delta: 241.2MB). Free memory was 115.8MB in the beginning and 178.6MB in the end (delta: -62.7MB). Peak memory consumption was 239.7MB. Max. memory is 16.1GB. [2023-11-29 01:07:16,664 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 153.1MB. Free memory is still 124.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 01:07:16,664 INFO L158 Benchmark]: CACSL2BoogieTranslator took 454.88ms. Allocated memory is still 153.1MB. Free memory was 115.8MB in the beginning and 98.5MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-29 01:07:16,665 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.45ms. Allocated memory is still 153.1MB. Free memory was 98.5MB in the beginning and 96.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 01:07:16,665 INFO L158 Benchmark]: Boogie Preprocessor took 51.59ms. Allocated memory is still 153.1MB. Free memory was 96.5MB in the beginning and 93.8MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 01:07:16,665 INFO L158 Benchmark]: RCFGBuilder took 527.67ms. Allocated memory is still 153.1MB. Free memory was 93.8MB in the beginning and 70.2MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-29 01:07:16,665 INFO L158 Benchmark]: TraceAbstraction took 372552.13ms. Allocated memory was 153.1MB in the beginning and 394.3MB in the end (delta: 241.2MB). Free memory was 69.2MB in the beginning and 178.6MB in the end (delta: -109.4MB). Peak memory consumption was 193.5MB. Max. memory is 16.1GB. [2023-11-29 01:07:16,667 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 153.1MB. Free memory is still 124.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 454.88ms. Allocated memory is still 153.1MB. Free memory was 115.8MB in the beginning and 98.5MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.45ms. Allocated memory is still 153.1MB. Free memory was 98.5MB in the beginning and 96.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.59ms. Allocated memory is still 153.1MB. Free memory was 96.5MB in the beginning and 93.8MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 527.67ms. Allocated memory is still 153.1MB. Free memory was 93.8MB in the beginning and 70.2MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 372552.13ms. Allocated memory was 153.1MB in the beginning and 394.3MB in the end (delta: 241.2MB). Free memory was 69.2MB in the beginning and 178.6MB in the end (delta: -109.4MB). Peak memory consumption was 193.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext_flag.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3747e65f01c1fbd6eb9d2ad39b0ceed8be631bde45acb074c0903963e660faab --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:07:18,341 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:07:18,421 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-29 01:07:18,427 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:07:18,428 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:07:18,456 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:07:18,457 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:07:18,457 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:07:18,458 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:07:18,459 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:07:18,459 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:07:18,460 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:07:18,461 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:07:18,461 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:07:18,462 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:07:18,462 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:07:18,463 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:07:18,463 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:07:18,464 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:07:18,464 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:07:18,465 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 01:07:18,466 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 01:07:18,466 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 01:07:18,466 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:07:18,467 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 01:07:18,467 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 01:07:18,468 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 01:07:18,468 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:07:18,469 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:07:18,469 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:07:18,470 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:07:18,470 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:07:18,470 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:07:18,470 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:07:18,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:07:18,471 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:07:18,471 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:07:18,471 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 01:07:18,472 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 01:07:18,472 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:07:18,472 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:07:18,472 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:07:18,473 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:07:18,473 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 01:07:18,473 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3747e65f01c1fbd6eb9d2ad39b0ceed8be631bde45acb074c0903963e660faab [2023-11-29 01:07:18,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:07:18,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:07:18,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:07:18,769 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:07:18,770 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:07:18,771 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/list-ext-properties/list-ext_flag.i [2023-11-29 01:07:21,576 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:07:21,785 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:07:21,786 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/sv-benchmarks/c/list-ext-properties/list-ext_flag.i [2023-11-29 01:07:21,801 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/data/ea2dabef5/d72f0e27933641fa98e3c95a8ba86e06/FLAG14fa52166 [2023-11-29 01:07:21,813 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/data/ea2dabef5/d72f0e27933641fa98e3c95a8ba86e06 [2023-11-29 01:07:21,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:07:21,816 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:07:21,818 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:07:21,818 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:07:21,822 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:07:21,823 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:07:21" (1/1) ... [2023-11-29 01:07:21,824 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9640921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:07:21, skipping insertion in model container [2023-11-29 01:07:21,824 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:07:21" (1/1) ... [2023-11-29 01:07:21,872 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:07:22,126 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:07:22,140 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:07:22,180 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:07:22,208 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:07:22,208 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:07:22 WrapperNode [2023-11-29 01:07:22,208 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:07:22,209 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:07:22,210 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:07:22,210 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:07:22,215 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:07:22" (1/1) ... [2023-11-29 01:07:22,234 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:07:22" (1/1) ... [2023-11-29 01:07:22,259 INFO L138 Inliner]: procedures = 122, calls = 32, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 126 [2023-11-29 01:07:22,259 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:07:22,260 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:07:22,260 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:07:22,261 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:07:22,269 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:07:22" (1/1) ... [2023-11-29 01:07:22,269 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:07:22" (1/1) ... [2023-11-29 01:07:22,274 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:07:22" (1/1) ... [2023-11-29 01:07:22,289 INFO L175 MemorySlicer]: Split 19 memory accesses to 2 slices as follows [2, 17]. 89 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 6 writes are split as follows [0, 6]. [2023-11-29 01:07:22,289 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:07:22" (1/1) ... [2023-11-29 01:07:22,289 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:07:22" (1/1) ... [2023-11-29 01:07:22,300 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:07:22" (1/1) ... [2023-11-29 01:07:22,304 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:07:22" (1/1) ... [2023-11-29 01:07:22,306 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:07:22" (1/1) ... [2023-11-29 01:07:22,309 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:07:22" (1/1) ... [2023-11-29 01:07:22,312 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:07:22,313 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:07:22,314 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:07:22,314 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:07:22,315 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:07:22" (1/1) ... [2023-11-29 01:07:22,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:07:22,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:07:22,340 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:07:22,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:07:22,377 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2023-11-29 01:07:22,378 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2023-11-29 01:07:22,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-29 01:07:22,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-29 01:07:22,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 01:07:22,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:07:22,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 01:07:22,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 01:07:22,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 01:07:22,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 01:07:22,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:07:22,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 01:07:22,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-29 01:07:22,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 01:07:22,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 01:07:22,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:07:22,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:07:22,479 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:07:22,481 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:07:22,524 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2023-11-29 01:07:22,964 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:07:23,001 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:07:23,001 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 01:07:23,001 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:07:23 BoogieIcfgContainer [2023-11-29 01:07:23,001 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:07:23,004 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:07:23,004 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:07:23,007 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:07:23,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:07:21" (1/3) ... [2023-11-29 01:07:23,008 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a26ab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:07:23, skipping insertion in model container [2023-11-29 01:07:23,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:07:22" (2/3) ... [2023-11-29 01:07:23,009 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a26ab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:07:23, skipping insertion in model container [2023-11-29 01:07:23,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:07:23" (3/3) ... [2023-11-29 01:07:23,010 INFO L112 eAbstractionObserver]: Analyzing ICFG list-ext_flag.i [2023-11-29 01:07:23,028 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:07:23,028 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 45 error locations. [2023-11-29 01:07:23,070 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:07:23,075 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3b6ef09, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:07:23,076 INFO L358 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2023-11-29 01:07:23,079 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 50 states have (on average 2.24) internal successors, (112), 97 states have internal predecessors, (112), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:23,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-29 01:07:23,084 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:23,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-29 01:07:23,085 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:07:23,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:23,090 INFO L85 PathProgramCache]: Analyzing trace with hash 227215, now seen corresponding path program 1 times [2023-11-29 01:07:23,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:07:23,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666047061] [2023-11-29 01:07:23,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:23,103 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:07:23,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:07:23,115 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:07:23,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-29 01:07:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:23,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:07:23,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:23,247 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 6 treesize of output 7 [2023-11-29 01:07:23,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:23,263 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:07:23,263 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:07:23,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666047061] [2023-11-29 01:07:23,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666047061] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:07:23,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:07:23,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:07:23,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562938349] [2023-11-29 01:07:23,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:07:23,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:07:23,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:07:23,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:07:23,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:07:23,331 INFO L87 Difference]: Start difference. First operand has 99 states, 50 states have (on average 2.24) internal successors, (112), 97 states have internal predecessors, (112), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:23,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:23,540 INFO L93 Difference]: Finished difference Result 116 states and 128 transitions. [2023-11-29 01:07:23,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:07:23,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-29 01:07:23,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:23,550 INFO L225 Difference]: With dead ends: 116 [2023-11-29 01:07:23,550 INFO L226 Difference]: Without dead ends: 110 [2023-11-29 01:07:23,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:07:23,555 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 94 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:23,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 77 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:07:23,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-11-29 01:07:23,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 91. [2023-11-29 01:07:23,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 47 states have (on average 2.106382978723404) internal successors, (99), 90 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:23,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2023-11-29 01:07:23,590 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 3 [2023-11-29 01:07:23,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:23,590 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2023-11-29 01:07:23,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:23,591 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2023-11-29 01:07:23,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-29 01:07:23,591 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:23,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-29 01:07:23,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:07:23,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:07:23,793 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:07:23,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:23,793 INFO L85 PathProgramCache]: Analyzing trace with hash 227216, now seen corresponding path program 1 times [2023-11-29 01:07:23,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:07:23,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904006829] [2023-11-29 01:07:23,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:23,794 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:07:23,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:07:23,795 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:07:23,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-29 01:07:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:23,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:07:23,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:23,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 01:07:23,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:23,876 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:07:23,876 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:07:23,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [904006829] [2023-11-29 01:07:23,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [904006829] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:07:23,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:07:23,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:07:23,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961380480] [2023-11-29 01:07:23,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:07:23,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:07:23,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:07:23,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:07:23,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:07:23,879 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:24,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:24,047 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2023-11-29 01:07:24,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:07:24,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-29 01:07:24,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:24,049 INFO L225 Difference]: With dead ends: 90 [2023-11-29 01:07:24,049 INFO L226 Difference]: Without dead ends: 90 [2023-11-29 01:07:24,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:07:24,051 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 95 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:24,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 61 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:07:24,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-29 01:07:24,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2023-11-29 01:07:24,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 47 states have (on average 2.0851063829787235) internal successors, (98), 89 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:24,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2023-11-29 01:07:24,061 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 3 [2023-11-29 01:07:24,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:24,061 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2023-11-29 01:07:24,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:24,062 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2023-11-29 01:07:24,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 01:07:24,062 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:24,062 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:07:24,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-29 01:07:24,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:07:24,263 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:07:24,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:24,264 INFO L85 PathProgramCache]: Analyzing trace with hash -437546213, now seen corresponding path program 1 times [2023-11-29 01:07:24,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:07:24,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2031669497] [2023-11-29 01:07:24,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:24,265 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:07:24,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:07:24,266 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:07:24,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-29 01:07:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:24,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:07:24,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:24,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:07:24,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:24,366 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:07:24,366 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:07:24,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2031669497] [2023-11-29 01:07:24,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2031669497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:07:24,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:07:24,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:07:24,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124147645] [2023-11-29 01:07:24,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:07:24,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:07:24,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:07:24,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:07:24,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:07:24,371 INFO L87 Difference]: Start difference. First operand 90 states and 98 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:24,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:24,696 INFO L93 Difference]: Finished difference Result 99 states and 110 transitions. [2023-11-29 01:07:24,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:07:24,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2023-11-29 01:07:24,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:24,698 INFO L225 Difference]: With dead ends: 99 [2023-11-29 01:07:24,698 INFO L226 Difference]: Without dead ends: 99 [2023-11-29 01:07:24,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:07:24,700 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 160 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:24,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 47 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:07:24,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-29 01:07:24,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 82. [2023-11-29 01:07:24,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 54 states have (on average 1.7777777777777777) internal successors, (96), 81 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:24,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 96 transitions. [2023-11-29 01:07:24,709 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 96 transitions. Word has length 7 [2023-11-29 01:07:24,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:24,709 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 96 transitions. [2023-11-29 01:07:24,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:24,710 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 96 transitions. [2023-11-29 01:07:24,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 01:07:24,710 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:24,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:07:24,712 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-29 01:07:24,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:07:24,911 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:07:24,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:24,912 INFO L85 PathProgramCache]: Analyzing trace with hash -437546212, now seen corresponding path program 1 times [2023-11-29 01:07:24,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:07:24,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1814741361] [2023-11-29 01:07:24,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:24,913 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:07:24,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:07:24,913 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:07:24,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-29 01:07:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:24,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:07:24,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:25,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 01:07:25,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:25,065 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:07:25,065 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:07:25,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1814741361] [2023-11-29 01:07:25,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1814741361] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:07:25,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:07:25,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:07:25,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809344150] [2023-11-29 01:07:25,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:07:25,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:07:25,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:07:25,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:07:25,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:07:25,068 INFO L87 Difference]: Start difference. First operand 82 states and 96 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:25,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:25,400 INFO L93 Difference]: Finished difference Result 115 states and 130 transitions. [2023-11-29 01:07:25,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:07:25,401 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2023-11-29 01:07:25,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:25,402 INFO L225 Difference]: With dead ends: 115 [2023-11-29 01:07:25,402 INFO L226 Difference]: Without dead ends: 115 [2023-11-29 01:07:25,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:07:25,404 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 171 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:25,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 58 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:07:25,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-29 01:07:25,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 101. [2023-11-29 01:07:25,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 75 states have (on average 1.56) internal successors, (117), 100 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:25,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 117 transitions. [2023-11-29 01:07:25,412 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 117 transitions. Word has length 7 [2023-11-29 01:07:25,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:25,413 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 117 transitions. [2023-11-29 01:07:25,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:25,413 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 117 transitions. [2023-11-29 01:07:25,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 01:07:25,414 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:25,414 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:07:25,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-29 01:07:25,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:07:25,615 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:07:25,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:25,615 INFO L85 PathProgramCache]: Analyzing trace with hash 84550381, now seen corresponding path program 1 times [2023-11-29 01:07:25,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:07:25,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457278590] [2023-11-29 01:07:25,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:25,616 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:07:25,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:07:25,617 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:07:25,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-29 01:07:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:25,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 01:07:25,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:25,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:07:25,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:25,790 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:07:25,790 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:07:25,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457278590] [2023-11-29 01:07:25,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457278590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:07:25,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:07:25,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:07:25,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209565321] [2023-11-29 01:07:25,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:07:25,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:07:25,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:07:25,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:07:25,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:07:25,793 INFO L87 Difference]: Start difference. First operand 101 states and 117 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:26,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:26,187 INFO L93 Difference]: Finished difference Result 137 states and 157 transitions. [2023-11-29 01:07:26,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:07:26,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2023-11-29 01:07:26,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:26,189 INFO L225 Difference]: With dead ends: 137 [2023-11-29 01:07:26,190 INFO L226 Difference]: Without dead ends: 137 [2023-11-29 01:07:26,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:07:26,191 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 71 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:26,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 154 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:07:26,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-29 01:07:26,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 105. [2023-11-29 01:07:26,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 79 states have (on average 1.5443037974683544) internal successors, (122), 104 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:26,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 122 transitions. [2023-11-29 01:07:26,200 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 122 transitions. Word has length 14 [2023-11-29 01:07:26,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:26,201 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 122 transitions. [2023-11-29 01:07:26,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:26,201 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 122 transitions. [2023-11-29 01:07:26,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 01:07:26,202 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:26,202 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:07:26,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-29 01:07:26,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:07:26,404 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:07:26,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:26,405 INFO L85 PathProgramCache]: Analyzing trace with hash -837744419, now seen corresponding path program 1 times [2023-11-29 01:07:26,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:07:26,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [704947579] [2023-11-29 01:07:26,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:26,406 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:07:26,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:07:26,407 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:07:26,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-29 01:07:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:26,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:07:26,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:26,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:07:26,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:26,542 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:07:26,543 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:07:26,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [704947579] [2023-11-29 01:07:26,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [704947579] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:07:26,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:07:26,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:07:26,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393633726] [2023-11-29 01:07:26,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:07:26,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:07:26,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:07:26,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:07:26,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:07:26,545 INFO L87 Difference]: Start difference. First operand 105 states and 122 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:26,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:26,948 INFO L93 Difference]: Finished difference Result 140 states and 156 transitions. [2023-11-29 01:07:26,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:07:26,949 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-29 01:07:26,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:26,950 INFO L225 Difference]: With dead ends: 140 [2023-11-29 01:07:26,950 INFO L226 Difference]: Without dead ends: 140 [2023-11-29 01:07:26,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:07:26,950 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 94 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:26,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 156 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:07:26,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-11-29 01:07:26,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 105. [2023-11-29 01:07:26,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 79 states have (on average 1.5316455696202531) internal successors, (121), 104 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:26,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 121 transitions. [2023-11-29 01:07:26,957 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 121 transitions. Word has length 15 [2023-11-29 01:07:26,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:26,957 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 121 transitions. [2023-11-29 01:07:26,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:26,958 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 121 transitions. [2023-11-29 01:07:26,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 01:07:26,958 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:26,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:07:26,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-29 01:07:27,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:07:27,159 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:07:27,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:27,160 INFO L85 PathProgramCache]: Analyzing trace with hash -341078209, now seen corresponding path program 1 times [2023-11-29 01:07:27,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:07:27,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836047899] [2023-11-29 01:07:27,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:27,160 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:07:27,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:07:27,161 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:07:27,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-29 01:07:27,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:27,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:07:27,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:27,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:27,329 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:07:27,329 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:07:27,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1836047899] [2023-11-29 01:07:27,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1836047899] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:07:27,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:07:27,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:07:27,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671691772] [2023-11-29 01:07:27,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:07:27,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:07:27,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:07:27,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:07:27,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:07:27,331 INFO L87 Difference]: Start difference. First operand 105 states and 121 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:27,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:27,648 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2023-11-29 01:07:27,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:07:27,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-29 01:07:27,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:27,650 INFO L225 Difference]: With dead ends: 116 [2023-11-29 01:07:27,650 INFO L226 Difference]: Without dead ends: 116 [2023-11-29 01:07:27,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:07:27,651 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 152 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:27,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 80 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:07:27,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-29 01:07:27,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 106. [2023-11-29 01:07:27,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 81 states have (on average 1.5061728395061729) internal successors, (122), 105 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:27,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions. [2023-11-29 01:07:27,657 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 16 [2023-11-29 01:07:27,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:27,657 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 122 transitions. [2023-11-29 01:07:27,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:27,658 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 122 transitions. [2023-11-29 01:07:27,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 01:07:27,658 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:27,659 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:07:27,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-29 01:07:27,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:07:27,860 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:07:27,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:27,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1964115027, now seen corresponding path program 1 times [2023-11-29 01:07:27,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:07:27,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875730322] [2023-11-29 01:07:27,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:27,862 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:07:27,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:07:27,863 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:07:27,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-29 01:07:27,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:27,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:07:27,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:27,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:07:27,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 01:07:28,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 01:07:28,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:28,027 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:07:28,027 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:07:28,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875730322] [2023-11-29 01:07:28,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875730322] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:07:28,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:07:28,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:07:28,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128487211] [2023-11-29 01:07:28,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:07:28,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:07:28,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:07:28,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:07:28,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:07:28,030 INFO L87 Difference]: Start difference. First operand 106 states and 122 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:28,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:28,532 INFO L93 Difference]: Finished difference Result 116 states and 134 transitions. [2023-11-29 01:07:28,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:07:28,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-29 01:07:28,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:28,534 INFO L225 Difference]: With dead ends: 116 [2023-11-29 01:07:28,534 INFO L226 Difference]: Without dead ends: 116 [2023-11-29 01:07:28,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:07:28,535 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 114 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:28,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 115 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:07:28,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-29 01:07:28,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 104. [2023-11-29 01:07:28,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 81 states have (on average 1.4814814814814814) internal successors, (120), 103 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:28,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 120 transitions. [2023-11-29 01:07:28,542 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 120 transitions. Word has length 18 [2023-11-29 01:07:28,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:28,542 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 120 transitions. [2023-11-29 01:07:28,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:28,543 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 120 transitions. [2023-11-29 01:07:28,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 01:07:28,544 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:28,544 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:07:28,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-29 01:07:28,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:07:28,747 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:07:28,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:28,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1964115026, now seen corresponding path program 1 times [2023-11-29 01:07:28,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:07:28,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1107196169] [2023-11-29 01:07:28,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:28,748 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:07:28,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:07:28,749 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:07:28,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-29 01:07:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:28,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 01:07:28,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:28,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 01:07:28,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 01:07:28,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:07:28,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-11-29 01:07:28,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:28,984 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:07:28,984 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:07:28,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1107196169] [2023-11-29 01:07:28,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1107196169] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:07:28,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:07:28,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:07:28,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902298431] [2023-11-29 01:07:28,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:07:28,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:07:28,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:07:28,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:07:28,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:07:28,987 INFO L87 Difference]: Start difference. First operand 104 states and 120 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:29,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:29,514 INFO L93 Difference]: Finished difference Result 112 states and 129 transitions. [2023-11-29 01:07:29,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:07:29,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-29 01:07:29,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:29,516 INFO L225 Difference]: With dead ends: 112 [2023-11-29 01:07:29,517 INFO L226 Difference]: Without dead ends: 112 [2023-11-29 01:07:29,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:07:29,517 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 65 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:29,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 178 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:07:29,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-29 01:07:29,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 88. [2023-11-29 01:07:29,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 72 states have (on average 1.4305555555555556) internal successors, (103), 87 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:29,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 103 transitions. [2023-11-29 01:07:29,523 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 103 transitions. Word has length 18 [2023-11-29 01:07:29,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:29,523 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 103 transitions. [2023-11-29 01:07:29,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:29,524 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 103 transitions. [2023-11-29 01:07:29,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 01:07:29,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:29,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:07:29,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-11-29 01:07:29,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:07:29,728 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:07:29,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:29,729 INFO L85 PathProgramCache]: Analyzing trace with hash 831872926, now seen corresponding path program 1 times [2023-11-29 01:07:29,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:07:29,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243715016] [2023-11-29 01:07:29,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:29,729 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:07:29,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:07:29,730 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:07:29,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-29 01:07:29,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:29,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:07:29,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:29,945 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~p~0#1.base_99| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~p~0#1.base_99| (_ bv0 1)) |c_#valid|) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~p~0#1.base_99|) (_ bv0 1)))) is different from true [2023-11-29 01:07:29,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:29,955 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:07:29,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:07:29,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243715016] [2023-11-29 01:07:29,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243715016] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:07:29,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:07:29,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:07:29,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412406910] [2023-11-29 01:07:29,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:07:29,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:07:29,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:07:29,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:07:29,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2023-11-29 01:07:29,958 INFO L87 Difference]: Start difference. First operand 88 states and 103 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:30,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:30,356 INFO L93 Difference]: Finished difference Result 130 states and 147 transitions. [2023-11-29 01:07:30,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:07:30,357 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-29 01:07:30,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:30,358 INFO L225 Difference]: With dead ends: 130 [2023-11-29 01:07:30,358 INFO L226 Difference]: Without dead ends: 125 [2023-11-29 01:07:30,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=19, Unknown=1, NotChecked=8, Total=42 [2023-11-29 01:07:30,359 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 66 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 123 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:30,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 120 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 90 Invalid, 0 Unknown, 123 Unchecked, 0.3s Time] [2023-11-29 01:07:30,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-11-29 01:07:30,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 91. [2023-11-29 01:07:30,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 75 states have (on average 1.4133333333333333) internal successors, (106), 90 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:30,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 106 transitions. [2023-11-29 01:07:30,363 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 106 transitions. Word has length 19 [2023-11-29 01:07:30,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:30,363 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 106 transitions. [2023-11-29 01:07:30,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:30,364 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 106 transitions. [2023-11-29 01:07:30,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 01:07:30,365 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:30,365 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:07:30,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-11-29 01:07:30,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:07:30,573 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:07:30,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:30,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1071353358, now seen corresponding path program 1 times [2023-11-29 01:07:30,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:07:30,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [378630071] [2023-11-29 01:07:30,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:30,574 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:07:30,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:07:30,575 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:07:30,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-29 01:07:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:30,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:07:30,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:30,689 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 [2023-11-29 01:07:30,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 01:07:30,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:30,710 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:07:30,710 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:07:30,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [378630071] [2023-11-29 01:07:30,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [378630071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:07:30,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:07:30,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:07:30,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578034019] [2023-11-29 01:07:30,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:07:30,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:07:30,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:07:30,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:07:30,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:07:30,712 INFO L87 Difference]: Start difference. First operand 91 states and 106 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:31,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:31,056 INFO L93 Difference]: Finished difference Result 90 states and 104 transitions. [2023-11-29 01:07:31,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:07:31,057 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-29 01:07:31,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:31,057 INFO L225 Difference]: With dead ends: 90 [2023-11-29 01:07:31,058 INFO L226 Difference]: Without dead ends: 90 [2023-11-29 01:07:31,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:07:31,059 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 5 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:31,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 164 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:07:31,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-29 01:07:31,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2023-11-29 01:07:31,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 73 states have (on average 1.4109589041095891) internal successors, (103), 88 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:31,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 103 transitions. [2023-11-29 01:07:31,062 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 103 transitions. Word has length 21 [2023-11-29 01:07:31,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:31,063 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 103 transitions. [2023-11-29 01:07:31,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:31,063 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 103 transitions. [2023-11-29 01:07:31,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 01:07:31,064 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:31,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:07:31,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-11-29 01:07:31,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:07:31,264 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:07:31,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:31,265 INFO L85 PathProgramCache]: Analyzing trace with hash -983957516, now seen corresponding path program 1 times [2023-11-29 01:07:31,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:07:31,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1419912950] [2023-11-29 01:07:31,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:31,265 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:07:31,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:07:31,266 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:07:31,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-29 01:07:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:31,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 01:07:31,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:31,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:07:31,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:07:31,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 01:07:31,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 01:07:31,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:07:31,571 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:07:31,571 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:07:31,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1419912950] [2023-11-29 01:07:31,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1419912950] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:07:31,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:07:31,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:07:31,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78538955] [2023-11-29 01:07:31,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:07:31,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:07:31,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:07:31,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:07:31,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:07:31,573 INFO L87 Difference]: Start difference. First operand 89 states and 103 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:31,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:31,922 INFO L93 Difference]: Finished difference Result 97 states and 111 transitions. [2023-11-29 01:07:31,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:07:31,923 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-29 01:07:31,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:31,924 INFO L225 Difference]: With dead ends: 97 [2023-11-29 01:07:31,924 INFO L226 Difference]: Without dead ends: 89 [2023-11-29 01:07:31,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:07:31,925 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 91 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:31,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 190 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:07:31,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-29 01:07:31,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 81. [2023-11-29 01:07:31,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 65 states have (on average 1.4461538461538461) internal successors, (94), 80 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:31,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2023-11-29 01:07:31,928 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 21 [2023-11-29 01:07:31,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:31,929 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2023-11-29 01:07:31,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:31,929 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2023-11-29 01:07:31,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 01:07:31,930 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:31,930 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:07:31,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-29 01:07:32,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:07:32,133 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:07:32,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:32,134 INFO L85 PathProgramCache]: Analyzing trace with hash -764521957, now seen corresponding path program 1 times [2023-11-29 01:07:32,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:07:32,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [40320531] [2023-11-29 01:07:32,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:32,134 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:07:32,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:07:32,135 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:07:32,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-29 01:07:32,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:32,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:07:32,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:32,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:32,313 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:07:32,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:32,437 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:07:32,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [40320531] [2023-11-29 01:07:32,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [40320531] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:07:32,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:07:32,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-29 01:07:32,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263717440] [2023-11-29 01:07:32,437 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:07:32,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:07:32,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:07:32,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:07:32,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:07:32,439 INFO L87 Difference]: Start difference. First operand 81 states and 94 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:32,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:32,952 INFO L93 Difference]: Finished difference Result 259 states and 300 transitions. [2023-11-29 01:07:32,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:07:32,953 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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 25 [2023-11-29 01:07:32,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:32,955 INFO L225 Difference]: With dead ends: 259 [2023-11-29 01:07:32,955 INFO L226 Difference]: Without dead ends: 259 [2023-11-29 01:07:32,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:07:32,956 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 262 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:32,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 401 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:07:32,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-11-29 01:07:32,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 154. [2023-11-29 01:07:32,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 138 states have (on average 1.4420289855072463) internal successors, (199), 153 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:32,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 199 transitions. [2023-11-29 01:07:32,961 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 199 transitions. Word has length 25 [2023-11-29 01:07:32,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:32,962 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 199 transitions. [2023-11-29 01:07:32,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:32,962 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 199 transitions. [2023-11-29 01:07:32,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-29 01:07:32,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:32,963 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:07:32,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-11-29 01:07:33,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:07:33,166 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:07:33,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:33,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1389183121, now seen corresponding path program 1 times [2023-11-29 01:07:33,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:07:33,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1419227354] [2023-11-29 01:07:33,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:33,167 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:07:33,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:07:33,167 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:07:33,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-29 01:07:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:33,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 01:07:33,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:33,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:07:33,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:07:33,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:07:33,525 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 7 treesize of output 3 [2023-11-29 01:07:33,638 INFO L349 Elim1Store]: treesize reduction 15, result has 37.5 percent of original size [2023-11-29 01:07:33,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 48 [2023-11-29 01:07:33,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2023-11-29 01:07:33,669 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 24 treesize of output 18 [2023-11-29 01:07:33,832 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:07:33,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 43 [2023-11-29 01:07:33,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-29 01:07:33,943 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:33,943 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:07:34,071 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 16 treesize of output 12 [2023-11-29 01:07:34,242 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:07:34,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2023-11-29 01:07:34,261 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:07:34,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 01:07:34,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:07:34,487 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:07:34,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 64 treesize of output 88 [2023-11-29 01:07:34,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:34,704 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:07:34,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1419227354] [2023-11-29 01:07:34,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1419227354] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:07:34,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:07:34,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-11-29 01:07:34,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066959621] [2023-11-29 01:07:34,705 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:07:34,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 01:07:34,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:07:34,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 01:07:34,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:07:34,707 INFO L87 Difference]: Start difference. First operand 154 states and 199 transitions. Second operand has 17 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:36,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:36,638 INFO L93 Difference]: Finished difference Result 216 states and 262 transitions. [2023-11-29 01:07:36,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 01:07:36,638 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 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 26 [2023-11-29 01:07:36,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:36,640 INFO L225 Difference]: With dead ends: 216 [2023-11-29 01:07:36,640 INFO L226 Difference]: Without dead ends: 216 [2023-11-29 01:07:36,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=212, Invalid=658, Unknown=0, NotChecked=0, Total=870 [2023-11-29 01:07:36,641 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 429 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 40 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:36,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 347 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 565 Invalid, 6 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 01:07:36,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-11-29 01:07:36,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 154. [2023-11-29 01:07:36,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 138 states have (on average 1.434782608695652) internal successors, (198), 153 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:36,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 198 transitions. [2023-11-29 01:07:36,646 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 198 transitions. Word has length 26 [2023-11-29 01:07:36,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:36,646 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 198 transitions. [2023-11-29 01:07:36,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:36,646 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 198 transitions. [2023-11-29 01:07:36,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-29 01:07:36,647 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:36,647 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:07:36,650 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-11-29 01:07:36,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:07:36,849 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:07:36,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:36,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1389183120, now seen corresponding path program 1 times [2023-11-29 01:07:36,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:07:36,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077352241] [2023-11-29 01:07:36,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:36,850 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:07:36,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:07:36,851 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:07:36,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-29 01:07:36,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:36,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 01:07:36,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:37,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 01:07:37,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:07:37,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:07:37,288 INFO L349 Elim1Store]: treesize reduction 15, result has 37.5 percent of original size [2023-11-29 01:07:37,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 58 [2023-11-29 01:07:37,318 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2023-11-29 01:07:37,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 17 [2023-11-29 01:07:37,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2023-11-29 01:07:37,341 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 22 treesize of output 16 [2023-11-29 01:07:37,543 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:07:37,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 46 [2023-11-29 01:07:37,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 01:07:37,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 01:07:37,677 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:37,677 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:07:38,115 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 16 treesize of output 12 [2023-11-29 01:07:38,459 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:07:38,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2023-11-29 01:07:38,473 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:07:38,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2023-11-29 01:07:38,507 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:07:38,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 61 [2023-11-29 01:07:38,548 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:07:38,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 89 [2023-11-29 01:07:38,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-29 01:07:38,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:07:38,692 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:07:38,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 34 [2023-11-29 01:07:38,717 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:07:38,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 43 [2023-11-29 01:07:38,724 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 13 treesize of output 5 [2023-11-29 01:07:39,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:39,008 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:07:39,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077352241] [2023-11-29 01:07:39,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1077352241] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:07:39,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:07:39,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-29 01:07:39,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810112884] [2023-11-29 01:07:39,009 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:07:39,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 01:07:39,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:07:39,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 01:07:39,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:07:39,010 INFO L87 Difference]: Start difference. First operand 154 states and 198 transitions. Second operand has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:42,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:42,385 INFO L93 Difference]: Finished difference Result 219 states and 256 transitions. [2023-11-29 01:07:42,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 01:07:42,386 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 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 26 [2023-11-29 01:07:42,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:42,388 INFO L225 Difference]: With dead ends: 219 [2023-11-29 01:07:42,388 INFO L226 Difference]: Without dead ends: 219 [2023-11-29 01:07:42,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=264, Invalid=792, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 01:07:42,389 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 518 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 65 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:42,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 387 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 570 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2023-11-29 01:07:42,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-11-29 01:07:42,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 158. [2023-11-29 01:07:42,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 145 states have (on average 1.3517241379310345) internal successors, (196), 157 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:42,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 196 transitions. [2023-11-29 01:07:42,395 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 196 transitions. Word has length 26 [2023-11-29 01:07:42,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:42,395 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 196 transitions. [2023-11-29 01:07:42,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:42,396 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 196 transitions. [2023-11-29 01:07:42,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 01:07:42,396 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:42,396 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:07:42,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-11-29 01:07:42,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:07:42,597 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:07:42,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:42,597 INFO L85 PathProgramCache]: Analyzing trace with hash -115085846, now seen corresponding path program 1 times [2023-11-29 01:07:42,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:07:42,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941512046] [2023-11-29 01:07:42,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:42,598 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:07:42,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:07:42,599 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:07:42,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-29 01:07:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:42,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 01:07:42,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:42,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:07:42,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:07:42,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 01:07:42,894 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 7 treesize of output 3 [2023-11-29 01:07:42,954 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-11-29 01:07:42,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2023-11-29 01:07:43,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:43,100 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:07:43,345 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_334 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~p~0#1.base_122| (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_334))) (store .cse2 |v_ULTIMATE.start_main_~p~0#1.base_122| (store (select .cse2 |v_ULTIMATE.start_main_~p~0#1.base_122|) |c_ULTIMATE.start_main_~p~0#1.offset| (_ bv3 32)))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 (_ bv2 32)) (= .cse0 (_ bv3 32)) (not (= (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~p~0#1.offset|))) (store (select |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base|) .cse1 (select v_ArrVal_334 .cse1))) v_ArrVal_334))))) is different from false [2023-11-29 01:07:43,458 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:07:43,458 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 277 treesize of output 283 [2023-11-29 01:07:44,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:07:44,013 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 69 treesize of output 65 [2023-11-29 01:07:44,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:07:44,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:44,084 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:07:44,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941512046] [2023-11-29 01:07:44,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1941512046] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:07:44,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:07:44,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2023-11-29 01:07:44,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141893842] [2023-11-29 01:07:44,085 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:07:44,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 01:07:44,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:07:44,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 01:07:44,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=202, Unknown=1, NotChecked=30, Total=306 [2023-11-29 01:07:44,086 INFO L87 Difference]: Start difference. First operand 158 states and 196 transitions. Second operand has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:45,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:45,900 INFO L93 Difference]: Finished difference Result 331 states and 397 transitions. [2023-11-29 01:07:45,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 01:07:45,901 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 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 27 [2023-11-29 01:07:45,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:45,903 INFO L225 Difference]: With dead ends: 331 [2023-11-29 01:07:45,903 INFO L226 Difference]: Without dead ends: 331 [2023-11-29 01:07:45,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=227, Invalid=532, Unknown=1, NotChecked=52, Total=812 [2023-11-29 01:07:45,904 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 345 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 237 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:45,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 416 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 495 Invalid, 0 Unknown, 237 Unchecked, 1.5s Time] [2023-11-29 01:07:45,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-11-29 01:07:45,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 190. [2023-11-29 01:07:45,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 177 states have (on average 1.3389830508474576) internal successors, (237), 189 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:45,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 237 transitions. [2023-11-29 01:07:45,910 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 237 transitions. Word has length 27 [2023-11-29 01:07:45,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:45,910 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 237 transitions. [2023-11-29 01:07:45,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:45,911 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 237 transitions. [2023-11-29 01:07:45,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 01:07:45,911 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:45,911 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:07:45,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-11-29 01:07:46,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:07:46,112 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:07:46,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:46,112 INFO L85 PathProgramCache]: Analyzing trace with hash -410910476, now seen corresponding path program 1 times [2023-11-29 01:07:46,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:07:46,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [470705273] [2023-11-29 01:07:46,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:46,113 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:07:46,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:07:46,114 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:07:46,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-29 01:07:46,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:46,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 01:07:46,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:46,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 01:07:46,342 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 19 treesize of output 18 [2023-11-29 01:07:46,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 01:07:46,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:07:46,485 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 7 treesize of output 3 [2023-11-29 01:07:46,561 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-11-29 01:07:46,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 32 [2023-11-29 01:07:46,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:46,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:07:50,173 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:07:50,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 571 treesize of output 547 [2023-11-29 01:07:50,242 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:07:50,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2075 treesize of output 2009 [2023-11-29 01:07:50,579 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 382 treesize of output 362 [2023-11-29 01:07:51,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:51,475 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:07:51,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [470705273] [2023-11-29 01:07:51,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [470705273] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:07:51,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:07:51,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2023-11-29 01:07:51,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697718321] [2023-11-29 01:07:51,476 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:07:51,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 01:07:51,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:07:51,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 01:07:51,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=477, Unknown=31, NotChecked=0, Total=650 [2023-11-29 01:07:51,477 INFO L87 Difference]: Start difference. First operand 190 states and 237 transitions. Second operand has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 25 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:05,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:09:18,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:09:22,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:09:26,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:09:30,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:09:34,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:09:38,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:09:42,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:09:46,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:09:50,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:09:54,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:09:55,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:10:00,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:10:04,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:10:08,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:10:12,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:10:16,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:10:20,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:10:24,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:10:28,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:10:57,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.74s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:11:02,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:11:05,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:11:31,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:11:32,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:11:34,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:11:38,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:11:40,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:11:41,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:41,330 INFO L93 Difference]: Finished difference Result 246 states and 294 transitions. [2023-11-29 01:11:41,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-29 01:11:41,331 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 25 states have internal predecessors, (48), 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 27 [2023-11-29 01:11:41,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:41,333 INFO L225 Difference]: With dead ends: 246 [2023-11-29 01:11:41,333 INFO L226 Difference]: Without dead ends: 246 [2023-11-29 01:11:41,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 126.5s TimeCoverageRelationStatistics Valid=509, Invalid=1377, Unknown=94, NotChecked=0, Total=1980 [2023-11-29 01:11:41,334 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 444 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 42 mSolverCounterUnsat, 58 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 105.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 58 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 106.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:41,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 425 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 685 Invalid, 58 Unknown, 0 Unchecked, 106.8s Time] [2023-11-29 01:11:41,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-11-29 01:11:41,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 190. [2023-11-29 01:11:41,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 177 states have (on average 1.3276836158192091) internal successors, (235), 189 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:11:41,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 235 transitions. [2023-11-29 01:11:41,341 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 235 transitions. Word has length 27 [2023-11-29 01:11:41,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:41,341 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 235 transitions. [2023-11-29 01:11:41,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 25 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:11:41,342 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 235 transitions. [2023-11-29 01:11:41,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 01:11:41,342 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:41,343 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:41,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-11-29 01:11:41,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:11:41,547 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:11:41,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:41,547 INFO L85 PathProgramCache]: Analyzing trace with hash 502700682, now seen corresponding path program 1 times [2023-11-29 01:11:41,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:11:41,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1979837331] [2023-11-29 01:11:41,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:41,548 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:11:41,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:11:41,549 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:11:41,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-29 01:11:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:41,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 01:11:41,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:41,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:11:42,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-29 01:11:42,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:11:42,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-29 01:11:42,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 01:11:42,608 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 20 treesize of output 19 [2023-11-29 01:11:42,996 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 01:11:42,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 19 [2023-11-29 01:11:43,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:11:43,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:43,894 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.base_133| (_ BitVec 32)) (v_ArrVal_416 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (let ((.cse2 (store |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_416))) (store .cse2 |v_ULTIMATE.start_main_~p~0#1.base_133| (store (select .cse2 |v_ULTIMATE.start_main_~p~0#1.base_133|) |c_ULTIMATE.start_main_~p~0#1.offset| (_ bv3 32)))) |c_ULTIMATE.start_main_~a~0#1.base|))) (or (= (_ bv3 32) (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|)) (not (= v_ArrVal_416 (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~p~0#1.offset|))) (store (select |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base|) .cse1 (select v_ArrVal_416 .cse1))))) (not (= (select .cse0 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv4 32))) (_ bv0 32)))))) is different from false [2023-11-29 01:11:44,088 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.base_133| (_ BitVec 32)) (v_ArrVal_416 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (let ((.cse2 (store |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_416))) (store .cse2 |v_ULTIMATE.start_main_~p~0#1.base_133| (store (select .cse2 |v_ULTIMATE.start_main_~p~0#1.base_133|) |c_ULTIMATE.start_main_~p~0#1.offset| (_ bv3 32)))) |c_ULTIMATE.start_main_~a~0#1.base|))) (or (= (_ bv3 32) (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|)) (not (= v_ArrVal_416 (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~p~0#1.offset|))) (store (store (select |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset| (select v_ArrVal_416 |c_ULTIMATE.start_main_~p~0#1.offset|)) .cse1 (select v_ArrVal_416 .cse1))))) (not (= (select .cse0 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv4 32))) (_ bv0 32)))))) is different from false [2023-11-29 01:11:44,906 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:11:44,906 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 313 treesize of output 319 [2023-11-29 01:11:47,826 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 14 treesize of output 8 [2023-11-29 01:11:48,398 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:11:48,398 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 14 treesize of output 8 [2023-11-29 01:11:48,426 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:11:48,426 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 1184 treesize of output 1164 [2023-11-29 01:11:48,588 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 01:11:48,605 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 01:11:48,620 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 143 treesize of output 135 [2023-11-29 01:11:48,650 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 01:11:48,660 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 01:11:48,675 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 143 treesize of output 135 [2023-11-29 01:11:48,697 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 01:11:48,724 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 01:11:48,731 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 106 treesize of output 100 [2023-11-29 01:11:48,754 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 01:11:48,774 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 01:11:48,790 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 143 treesize of output 135 [2023-11-29 01:11:48,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:11:48,974 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:11:48,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1979837331] [2023-11-29 01:11:48,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1979837331] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:11:48,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:11:48,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2023-11-29 01:11:48,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168031699] [2023-11-29 01:11:48,975 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:48,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 01:11:48,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:11:48,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 01:11:48,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=287, Unknown=2, NotChecked=74, Total=462 [2023-11-29 01:11:48,976 INFO L87 Difference]: Start difference. First operand 190 states and 235 transitions. Second operand has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:11:51,442 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base|))) (let ((.cse0 (forall ((|v_ULTIMATE.start_main_~p~0#1.base_133| (_ BitVec 32)) (v_ArrVal_416 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (let ((.cse4 (store |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_416))) (store .cse4 |v_ULTIMATE.start_main_~p~0#1.base_133| (store (select .cse4 |v_ULTIMATE.start_main_~p~0#1.base_133|) |c_ULTIMATE.start_main_~p~0#1.offset| (_ bv3 32)))) |c_ULTIMATE.start_main_~a~0#1.base|))) (or (= (_ bv3 32) (select .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|)) (not (= v_ArrVal_416 (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~p~0#1.offset|))) (store (store .cse1 |c_ULTIMATE.start_main_~p~0#1.offset| (select v_ArrVal_416 |c_ULTIMATE.start_main_~p~0#1.offset|)) .cse3 (select v_ArrVal_416 .cse3))))) (not (= (select .cse2 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv4 32))) (_ bv0 32)))))))) (and (or .cse0 (= (select .cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~p~0#1.offset|)) (_ bv0 32))) (= |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv0 32)) .cse0 (or (= |c_ULTIMATE.start_main_#t~mem8#1| (_ bv0 32)) .cse0)))) is different from false [2023-11-29 01:11:57,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:57,930 INFO L93 Difference]: Finished difference Result 432 states and 519 transitions. [2023-11-29 01:11:57,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 01:11:57,931 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 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 27 [2023-11-29 01:11:57,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:57,934 INFO L225 Difference]: With dead ends: 432 [2023-11-29 01:11:57,934 INFO L226 Difference]: Without dead ends: 432 [2023-11-29 01:11:57,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 31 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=323, Invalid=805, Unknown=6, NotChecked=198, Total=1332 [2023-11-29 01:11:57,935 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 439 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 47 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 1511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 687 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:57,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 607 Invalid, 1511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 768 Invalid, 9 Unknown, 687 Unchecked, 6.8s Time] [2023-11-29 01:11:57,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2023-11-29 01:11:57,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 201. [2023-11-29 01:11:57,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 188 states have (on average 1.3138297872340425) internal successors, (247), 200 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:11:57,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 247 transitions. [2023-11-29 01:11:57,946 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 247 transitions. Word has length 27 [2023-11-29 01:11:57,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:57,946 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 247 transitions. [2023-11-29 01:11:57,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:11:57,947 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 247 transitions. [2023-11-29 01:11:57,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 01:11:57,947 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:57,947 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:57,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-11-29 01:11:58,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:11:58,148 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:11:58,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:58,148 INFO L85 PathProgramCache]: Analyzing trace with hash 206876052, now seen corresponding path program 1 times [2023-11-29 01:11:58,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:11:58,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1821063909] [2023-11-29 01:11:58,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:58,149 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:11:58,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:11:58,150 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:11:58,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-29 01:11:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:58,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 01:11:58,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:58,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:11:58,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:11:58,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 01:11:58,947 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 7 treesize of output 3 [2023-11-29 01:11:59,172 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-11-29 01:11:59,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2023-11-29 01:11:59,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:11:59,622 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:12:00,483 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_454 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~p~0#1.base_139| (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_454))) (store .cse2 |v_ULTIMATE.start_main_~p~0#1.base_139| (store (select .cse2 |v_ULTIMATE.start_main_~p~0#1.base_139|) |c_ULTIMATE.start_main_~p~0#1.offset| (_ bv3 32)))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 (_ bv1 32)) (not (= v_ArrVal_454 (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~p~0#1.offset|))) (store (select |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base|) .cse1 (select v_ArrVal_454 .cse1))))) (= .cse0 (_ bv3 32))))) is different from false [2023-11-29 01:12:00,759 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:12:00,760 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 557 treesize of output 547 [2023-11-29 01:12:02,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:12:02,842 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 69 treesize of output 65 [2023-11-29 01:12:02,907 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 01:12:02,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:12:02,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:12:03,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:12:03,129 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:12:03,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1821063909] [2023-11-29 01:12:03,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1821063909] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:12:03,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:12:03,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2023-11-29 01:12:03,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838309315] [2023-11-29 01:12:03,130 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:12:03,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 01:12:03,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:12:03,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 01:12:03,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=202, Unknown=1, NotChecked=30, Total=306 [2023-11-29 01:12:03,131 INFO L87 Difference]: Start difference. First operand 201 states and 247 transitions. Second operand has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:12:08,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:12:08,837 INFO L93 Difference]: Finished difference Result 331 states and 395 transitions. [2023-11-29 01:12:08,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 01:12:08,838 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 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 27 [2023-11-29 01:12:08,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:12:08,840 INFO L225 Difference]: With dead ends: 331 [2023-11-29 01:12:08,840 INFO L226 Difference]: Without dead ends: 331 [2023-11-29 01:12:08,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=227, Invalid=532, Unknown=1, NotChecked=52, Total=812 [2023-11-29 01:12:08,841 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 272 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 223 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:12:08,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 554 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 654 Invalid, 0 Unknown, 223 Unchecked, 4.6s Time] [2023-11-29 01:12:08,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-11-29 01:12:08,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 203. [2023-11-29 01:12:08,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 190 states have (on average 1.305263157894737) internal successors, (248), 202 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:12:08,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 248 transitions. [2023-11-29 01:12:08,847 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 248 transitions. Word has length 27 [2023-11-29 01:12:08,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:12:08,847 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 248 transitions. [2023-11-29 01:12:08,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:12:08,848 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 248 transitions. [2023-11-29 01:12:08,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-29 01:12:08,848 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:12:08,851 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:12:08,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-11-29 01:12:09,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:12:09,052 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:12:09,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:12:09,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1527415504, now seen corresponding path program 1 times [2023-11-29 01:12:09,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:12:09,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446474880] [2023-11-29 01:12:09,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:09,053 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:12:09,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:12:09,054 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:12:09,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-29 01:12:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:09,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 01:12:09,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:12:09,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:12:09,519 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 01:12:09,520 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 [2023-11-29 01:12:09,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2023-11-29 01:12:10,006 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:12:10,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 40 [2023-11-29 01:12:10,262 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 12 [2023-11-29 01:12:10,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:12:10,337 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:12:10,969 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:12:10,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2023-11-29 01:12:11,016 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:12:11,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 38 [2023-11-29 01:12:11,028 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 22 treesize of output 18 [2023-11-29 01:12:20,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:12:20,063 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:12:20,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446474880] [2023-11-29 01:12:20,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446474880] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:12:20,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:12:20,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-11-29 01:12:20,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50265657] [2023-11-29 01:12:20,063 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:12:20,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 01:12:20,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:12:20,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 01:12:20,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=187, Unknown=9, NotChecked=0, Total=240 [2023-11-29 01:12:20,064 INFO L87 Difference]: Start difference. First operand 203 states and 248 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:12:22,315 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv8 32)))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))) (and (forall ((v_ArrVal_495 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_495) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) (_ bv0 32)))) (not (= .cse1 (_ bv0 32))) (not (= |c_ULTIMATE.start_main_~a~0#1.base| .cse1))))) is different from false [2023-11-29 01:12:22,462 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv8 32)))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))) (and (= (_ bv0 1) (bvadd (select |c_#valid| |c_ULTIMATE.start_main_~a~0#1.base|) (_ bv1 1))) (forall ((v_ArrVal_495 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_495) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) (_ bv0 32)))) (not (= .cse1 (_ bv0 32))) (not (= |c_ULTIMATE.start_main_~a~0#1.base| .cse1))))) is different from false [2023-11-29 01:12:23,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:12:23,188 INFO L93 Difference]: Finished difference Result 258 states and 313 transitions. [2023-11-29 01:12:23,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:12:23,189 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 15 states have internal predecessors, (53), 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 30 [2023-11-29 01:12:23,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:12:23,191 INFO L225 Difference]: With dead ends: 258 [2023-11-29 01:12:23,191 INFO L226 Difference]: Without dead ends: 258 [2023-11-29 01:12:23,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=114, Invalid=345, Unknown=11, NotChecked=82, Total=552 [2023-11-29 01:12:23,192 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 502 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:12:23,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 394 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 415 Invalid, 0 Unknown, 45 Unchecked, 2.5s Time] [2023-11-29 01:12:23,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-11-29 01:12:23,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 228. [2023-11-29 01:12:23,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 215 states have (on average 1.3348837209302327) internal successors, (287), 227 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:12:23,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 287 transitions. [2023-11-29 01:12:23,204 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 287 transitions. Word has length 30 [2023-11-29 01:12:23,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:12:23,204 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 287 transitions. [2023-11-29 01:12:23,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:12:23,205 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 287 transitions. [2023-11-29 01:12:23,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-29 01:12:23,205 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:12:23,205 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:12:23,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-11-29 01:12:23,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:12:23,406 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:12:23,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:12:23,406 INFO L85 PathProgramCache]: Analyzing trace with hash -517406458, now seen corresponding path program 1 times [2023-11-29 01:12:23,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:12:23,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310936313] [2023-11-29 01:12:23,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:23,407 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:12:23,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:12:23,408 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:12:23,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-29 01:12:23,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:23,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 01:12:23,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:12:23,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:12:23,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:12:23,995 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 01:12:23,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 01:12:24,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:12:24,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 01:12:24,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 01:12:24,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2023-11-29 01:12:24,432 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 16 treesize of output 11 [2023-11-29 01:12:24,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:12:24,581 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:12:25,138 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_534 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_535 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv3 32) (select (select (store (store |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_534) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_535) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (not (= v_ArrVal_534 (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~p~0#1.offset|))) (store (select |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base|) .cse0 (select v_ArrVal_534 .cse0))))))) is different from false [2023-11-29 01:12:25,229 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~t~0#1.base_25| (_ BitVec 32))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~t~0#1.base_25|) (_ bv0 1))) (forall ((v_ArrVal_534 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_535 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (select (select (store (store |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_534) |v_ULTIMATE.start_main_~t~0#1.base_25| v_ArrVal_535) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) (_ bv3 32))) (not (= v_ArrVal_534 (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~p~0#1.offset|))) (store (select |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base|) .cse0 (select v_ArrVal_534 .cse0))))))))) is different from false [2023-11-29 01:12:25,296 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:12:25,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 79 [2023-11-29 01:12:25,312 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 54 treesize of output 50 [2023-11-29 01:12:25,425 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 6 treesize of output 4 [2023-11-29 01:12:25,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 92 [2023-11-29 01:12:30,069 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:12:30,069 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:12:30,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310936313] [2023-11-29 01:12:30,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310936313] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:12:30,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:12:30,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-29 01:12:30,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042261534] [2023-11-29 01:12:30,070 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:12:30,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 01:12:30,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:12:30,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 01:12:30,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=162, Unknown=9, NotChecked=54, Total=272 [2023-11-29 01:12:30,072 INFO L87 Difference]: Start difference. First operand 228 states and 287 transitions. Second operand has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 16 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:12:33,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:12:33,036 INFO L93 Difference]: Finished difference Result 252 states and 310 transitions. [2023-11-29 01:12:33,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:12:33,037 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 16 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-11-29 01:12:33,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:12:33,039 INFO L225 Difference]: With dead ends: 252 [2023-11-29 01:12:33,039 INFO L226 Difference]: Without dead ends: 252 [2023-11-29 01:12:33,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=131, Invalid=418, Unknown=11, NotChecked=90, Total=650 [2023-11-29 01:12:33,041 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 175 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 274 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:12:33,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 346 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 364 Invalid, 0 Unknown, 274 Unchecked, 2.1s Time] [2023-11-29 01:12:33,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-11-29 01:12:33,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 228. [2023-11-29 01:12:33,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 215 states have (on average 1.330232558139535) internal successors, (286), 227 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:12:33,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 286 transitions. [2023-11-29 01:12:33,048 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 286 transitions. Word has length 32 [2023-11-29 01:12:33,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:12:33,049 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 286 transitions. [2023-11-29 01:12:33,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 16 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:12:33,049 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 286 transitions. [2023-11-29 01:12:33,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-29 01:12:33,050 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:12:33,050 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:12:33,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-11-29 01:12:33,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:12:33,250 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:12:33,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:12:33,251 INFO L85 PathProgramCache]: Analyzing trace with hash -2111227802, now seen corresponding path program 1 times [2023-11-29 01:12:33,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:12:33,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33586503] [2023-11-29 01:12:33,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:33,251 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:12:33,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:12:33,252 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:12:33,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-29 01:12:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:33,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 01:12:33,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:12:33,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:12:33,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:12:33,805 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 01:12:33,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 01:12:33,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:12:33,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 01:12:33,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 01:12:34,093 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 20 treesize of output 8 [2023-11-29 01:12:34,225 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 16 treesize of output 11 [2023-11-29 01:12:34,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:12:34,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:12:34,906 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_575 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_576 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= v_ArrVal_575 (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~p~0#1.offset|))) (store (select |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base|) .cse0 (select v_ArrVal_575 .cse0))))) (not (= (_ bv3 32) (select (select (store (store |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_575) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_576) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))))) is different from false [2023-11-29 01:12:35,332 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:12:35,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 143 [2023-11-29 01:12:35,355 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 62 treesize of output 58 [2023-11-29 01:12:35,449 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 6 treesize of output 4 [2023-11-29 01:12:35,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 92 [2023-11-29 01:12:43,975 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:12:43,975 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:12:43,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33586503] [2023-11-29 01:12:43,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33586503] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:12:43,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:12:43,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-29 01:12:43,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729949317] [2023-11-29 01:12:43,976 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:12:43,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 01:12:43,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:12:43,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 01:12:43,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=184, Unknown=12, NotChecked=28, Total=272 [2023-11-29 01:12:43,977 INFO L87 Difference]: Start difference. First operand 228 states and 286 transitions. Second operand has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 16 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:12:44,480 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base|)) (.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~p~0#1.offset|))) (and (= (_ bv0 1) (bvadd (select |c_#valid| |c_ULTIMATE.start_main_~a~0#1.base|) (_ bv1 1))) (= |c_ULTIMATE.start_main_~a~0#1.offset| |c_ULTIMATE.start_main_~p~0#1.offset|) (forall ((|v_ULTIMATE.start_main_~t~0#1.base_27| (_ BitVec 32))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~t~0#1.base_27|) (_ bv0 1))) (forall ((v_ArrVal_575 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_576 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= v_ArrVal_575 (store .cse0 .cse1 (select v_ArrVal_575 .cse1)))) (not (= (select (select (store (store |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_575) |v_ULTIMATE.start_main_~t~0#1.base_27| v_ArrVal_576) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) (_ bv3 32))))))) (not (= (select .cse0 |c_ULTIMATE.start_main_~p~0#1.offset|) (_ bv3 32))) (= |c_ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~p~0#1.base|) (forall ((v_ArrVal_575 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_576 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= v_ArrVal_575 (store .cse0 .cse1 (select v_ArrVal_575 .cse1)))) (not (= (_ bv3 32) (select (select (store (store |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_575) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_576) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))))))) is different from false [2023-11-29 01:12:46,303 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_576 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_576) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) (_ bv3 32)))) (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset|) (_ bv1 32))) is different from false [2023-11-29 01:12:49,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:12:49,462 INFO L93 Difference]: Finished difference Result 376 states and 469 transitions. [2023-11-29 01:12:49,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 01:12:49,462 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 16 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-11-29 01:12:49,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:12:49,465 INFO L225 Difference]: With dead ends: 376 [2023-11-29 01:12:49,465 INFO L226 Difference]: Without dead ends: 376 [2023-11-29 01:12:49,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=170, Invalid=580, Unknown=18, NotChecked=162, Total=930 [2023-11-29 01:12:49,466 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 155 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 38 mSolverCounterUnsat, 35 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 35 IncrementalHoareTripleChecker+Unknown, 195 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:12:49,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 500 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 541 Invalid, 35 Unknown, 195 Unchecked, 4.1s Time] [2023-11-29 01:12:49,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2023-11-29 01:12:49,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 253. [2023-11-29 01:12:49,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 240 states have (on average 1.3083333333333333) internal successors, (314), 252 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:12:49,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 314 transitions. [2023-11-29 01:12:49,476 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 314 transitions. Word has length 32 [2023-11-29 01:12:49,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:12:49,476 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 314 transitions. [2023-11-29 01:12:49,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 16 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:12:49,476 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 314 transitions. [2023-11-29 01:12:49,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-29 01:12:49,477 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:12:49,477 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:12:49,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-11-29 01:12:49,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:12:49,677 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:12:49,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:12:49,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1341212577, now seen corresponding path program 2 times [2023-11-29 01:12:49,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:12:49,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334984205] [2023-11-29 01:12:49,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:12:49,678 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:12:49,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:12:49,679 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:12:49,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-11-29 01:12:49,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:12:49,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:12:49,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 01:12:49,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:12:50,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:12:50,628 INFO L349 Elim1Store]: treesize reduction 15, result has 37.5 percent of original size [2023-11-29 01:12:50,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 51 [2023-11-29 01:12:50,722 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2023-11-29 01:12:50,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 17 [2023-11-29 01:12:50,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2023-11-29 01:12:50,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-29 01:12:51,349 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 19 treesize of output 11 [2023-11-29 01:12:51,369 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 7 treesize of output 3 [2023-11-29 01:12:51,543 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:12:51,543 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:12:52,088 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:12:52,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 97 [2023-11-29 01:12:52,442 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:12:52,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 64 [2023-11-29 01:12:52,457 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 39 treesize of output 35 [2023-11-29 01:12:53,088 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:12:53,088 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:12:53,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334984205] [2023-11-29 01:12:53,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334984205] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:12:53,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:12:53,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2023-11-29 01:12:53,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554271371] [2023-11-29 01:12:53,089 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:12:53,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 01:12:53,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:12:53,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 01:12:53,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:12:53,090 INFO L87 Difference]: Start difference. First operand 253 states and 314 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:12:57,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:12:57,432 INFO L93 Difference]: Finished difference Result 251 states and 296 transitions. [2023-11-29 01:12:57,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 01:12:57,432 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 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 33 [2023-11-29 01:12:57,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:12:57,434 INFO L225 Difference]: With dead ends: 251 [2023-11-29 01:12:57,434 INFO L226 Difference]: Without dead ends: 251 [2023-11-29 01:12:57,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=235, Invalid=820, Unknown=1, NotChecked=0, Total=1056 [2023-11-29 01:12:57,435 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 299 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:12:57,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 391 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-29 01:12:57,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-11-29 01:12:57,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 228. [2023-11-29 01:12:57,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 215 states have (on average 1.2697674418604652) internal successors, (273), 227 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:12:57,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 273 transitions. [2023-11-29 01:12:57,440 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 273 transitions. Word has length 33 [2023-11-29 01:12:57,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:12:57,440 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 273 transitions. [2023-11-29 01:12:57,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:12:57,441 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 273 transitions. [2023-11-29 01:12:57,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-29 01:12:57,441 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:12:57,441 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:12:57,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2023-11-29 01:12:57,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:12:57,642 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:12:57,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:12:57,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1850972573, now seen corresponding path program 3 times [2023-11-29 01:12:57,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:12:57,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035271872] [2023-11-29 01:12:57,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:12:57,643 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:12:57,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:12:57,644 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:12:57,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-11-29 01:12:57,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 01:12:57,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:12:57,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 01:12:57,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:12:57,895 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-11-29 01:12:57,896 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 22 [2023-11-29 01:12:58,660 INFO L349 Elim1Store]: treesize reduction 16, result has 48.4 percent of original size [2023-11-29 01:12:58,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 30 [2023-11-29 01:12:58,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:12:59,122 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2023-11-29 01:12:59,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 17 [2023-11-29 01:12:59,267 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2023-11-29 01:12:59,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 17 [2023-11-29 01:12:59,491 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2023-11-29 01:12:59,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 17 [2023-11-29 01:12:59,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:12:59,689 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 13 treesize of output 3 [2023-11-29 01:13:00,013 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-29 01:13:00,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 25 [2023-11-29 01:13:00,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:13:00,067 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 16 treesize of output 12 [2023-11-29 01:13:00,652 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:13:00,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 51 [2023-11-29 01:13:01,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-29 01:13:01,101 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:13:01,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:13:01,601 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 16 treesize of output 12 [2023-11-29 01:13:02,507 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:13:02,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 56 treesize of output 104 [2023-11-29 01:13:03,274 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv8 32)))) (let ((.cse3 (= |c_ULTIMATE.start_main_~a~0#1.offset| |c_ULTIMATE.start_main_~t~0#1.offset|)) (.cse5 (forall ((v_subst_5 (_ BitVec 32)) (v_ArrVal_675 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_678 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_675) v_subst_5 v_ArrVal_678) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~p~0#1.base|)))) (and (or (forall ((v_subst_5 (_ BitVec 32)) (v_ArrVal_675 (Array (_ BitVec 32) (_ BitVec 32))) (v_subst_4 (_ BitVec 32)) (v_prenex_133 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_134 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_678 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_675) v_subst_5 v_ArrVal_678) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)) (.cse1 (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_133) v_subst_4 v_prenex_134) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (or (= .cse0 .cse1) (= .cse0 |c_ULTIMATE.start_main_~p~0#1.base|) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse1)))) .cse3) (or (forall ((v_subst_5 (_ BitVec 32)) (v_ArrVal_675 (Array (_ BitVec 32) (_ BitVec 32))) (v_subst_4 (_ BitVec 32)) (v_prenex_133 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_134 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_678 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_675) v_subst_5 v_ArrVal_678) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (or (= .cse4 (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_133) v_subst_4 v_prenex_134) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)) (= .cse4 |c_ULTIMATE.start_main_~p~0#1.base|)))) .cse3) (or (forall ((v_subst_4 (_ BitVec 32)) (v_prenex_133 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_134 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= |c_ULTIMATE.start_main_~p~0#1.base| (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_133) v_subst_4 v_prenex_134) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)) (= |c_ULTIMATE.start_main_~a~0#1.base| v_subst_4))) .cse5) (forall ((v_subst_5 (_ BitVec 32)) (v_ArrVal_675 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_678 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_675) v_subst_5 v_ArrVal_678) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (or (= .cse6 |c_ULTIMATE.start_main_~p~0#1.base|) (forall ((v_subst_4 (_ BitVec 32)) (v_prenex_133 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_134 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_133) v_subst_4 v_prenex_134) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (or (= .cse6 .cse7) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse7) (= |c_ULTIMATE.start_main_~a~0#1.base| v_subst_4))))))) (or .cse3 .cse5 (forall ((v_subst_4 (_ BitVec 32)) (v_prenex_133 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_134 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_~p~0#1.base| (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_133) v_subst_4 v_prenex_134) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)))) (forall ((v_subst_5 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_ArrVal_675 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_133 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_134 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_678 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_133) v_subst_4 v_prenex_134) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (or (= (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_675) v_subst_5 v_ArrVal_678) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) .cse8) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse8) (= |c_ULTIMATE.start_main_~a~0#1.base| v_subst_4))))))) is different from false [2023-11-29 01:13:03,834 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv8 32)))) (let ((.cse2 (= |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv0 32))) (.cse3 (forall ((v_subst_5 (_ BitVec 32)) (v_ArrVal_675 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_678 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_675) v_subst_5 v_ArrVal_678) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1) |c_ULTIMATE.start_main_~p~0#1.base|)))) (and (or (forall ((v_subst_5 (_ BitVec 32)) (v_ArrVal_675 (Array (_ BitVec 32) (_ BitVec 32))) (v_subst_4 (_ BitVec 32)) (v_prenex_133 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_134 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_678 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_675) v_subst_5 v_ArrVal_678) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) (or (= .cse0 (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_133) v_subst_4 v_prenex_134) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1)) (= .cse0 |c_ULTIMATE.start_main_~p~0#1.base|)))) .cse2) (or (forall ((v_subst_4 (_ BitVec 32)) (v_prenex_133 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_134 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= |c_ULTIMATE.start_main_~p~0#1.base| (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_133) v_subst_4 v_prenex_134) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1)) (= |c_ULTIMATE.start_main_~a~0#1.base| v_subst_4))) .cse3) (or (forall ((v_subst_5 (_ BitVec 32)) (v_ArrVal_675 (Array (_ BitVec 32) (_ BitVec 32))) (v_subst_4 (_ BitVec 32)) (v_prenex_133 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_134 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_678 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_675) v_subst_5 v_ArrVal_678) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1)) (.cse5 (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_133) v_subst_4 v_prenex_134) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) (or (= .cse4 .cse5) (= .cse4 |c_ULTIMATE.start_main_~p~0#1.base|) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse5)))) .cse2) (forall ((v_subst_5 (_ BitVec 32)) (v_ArrVal_675 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_678 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_675) v_subst_5 v_ArrVal_678) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) (or (= .cse6 |c_ULTIMATE.start_main_~p~0#1.base|) (forall ((v_subst_4 (_ BitVec 32)) (v_prenex_133 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_134 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_133) v_subst_4 v_prenex_134) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) (or (= .cse6 .cse7) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse7) (= |c_ULTIMATE.start_main_~a~0#1.base| v_subst_4))))))) (or .cse2 .cse3 (forall ((v_subst_4 (_ BitVec 32)) (v_prenex_133 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_134 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_~p~0#1.base| (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_133) v_subst_4 v_prenex_134) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1)))) (forall ((v_subst_5 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_ArrVal_675 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_133 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_134 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_678 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_133) v_subst_4 v_prenex_134) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) (or (= (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_675) v_subst_5 v_ArrVal_678) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1) .cse8) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse8) (= |c_ULTIMATE.start_main_~a~0#1.base| v_subst_4))))))) is different from false [2023-11-29 01:13:05,867 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv8 32))) (.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~p~0#1.offset|)))) (let ((.cse2 (forall ((v_subst_5 (_ BitVec 32)) (v_ArrVal_675 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_678 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_675) v_subst_5 v_ArrVal_678) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1) .cse0))) (.cse3 (= |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv0 32)))) (and (or (forall ((v_subst_4 (_ BitVec 32)) (v_prenex_133 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_134 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store (store |c_#memory_$Pointer$#1.base| .cse0 v_prenex_133) v_subst_4 v_prenex_134) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1) .cse0)) .cse2 .cse3) (forall ((v_subst_5 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_ArrVal_675 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_133 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_134 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_678 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#1.base| .cse0 v_prenex_133) v_subst_4 v_prenex_134) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) (or (= .cse4 .cse0) (= |c_ULTIMATE.start_main_~a~0#1.base| v_subst_4) (= .cse4 (select (select (store (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_675) v_subst_5 v_ArrVal_678) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))))) (or (forall ((v_subst_4 (_ BitVec 32)) (v_prenex_133 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_134 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= (select (select (store (store |c_#memory_$Pointer$#1.base| .cse0 v_prenex_133) v_subst_4 v_prenex_134) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1) .cse0) (= |c_ULTIMATE.start_main_~a~0#1.base| v_subst_4))) .cse2) (or .cse3 (forall ((v_subst_5 (_ BitVec 32)) (v_ArrVal_675 (Array (_ BitVec 32) (_ BitVec 32))) (v_subst_4 (_ BitVec 32)) (v_prenex_133 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_134 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_678 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (store (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_675) v_subst_5 v_ArrVal_678) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) (or (= .cse5 .cse0) (= (select (select (store (store |c_#memory_$Pointer$#1.base| .cse0 v_prenex_133) v_subst_4 v_prenex_134) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1) .cse5))))) (or (forall ((v_subst_5 (_ BitVec 32)) (v_ArrVal_675 (Array (_ BitVec 32) (_ BitVec 32))) (v_subst_4 (_ BitVec 32)) (v_prenex_133 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_134 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_678 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (select (select (store (store |c_#memory_$Pointer$#1.base| .cse0 v_prenex_133) v_subst_4 v_prenex_134) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1)) (.cse7 (select (select (store (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_675) v_subst_5 v_ArrVal_678) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) (or (= .cse6 .cse0) (= .cse7 .cse0) (= .cse6 .cse7)))) .cse3) (forall ((v_subst_5 (_ BitVec 32)) (v_ArrVal_675 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_678 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (select (select (store (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_675) v_subst_5 v_ArrVal_678) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) (or (= .cse8 .cse0) (forall ((v_subst_4 (_ BitVec 32)) (v_prenex_133 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_134 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse9 (select (select (store (store |c_#memory_$Pointer$#1.base| .cse0 v_prenex_133) v_subst_4 v_prenex_134) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) (or (= .cse9 .cse0) (= |c_ULTIMATE.start_main_~a~0#1.base| v_subst_4) (= .cse9 .cse8)))))))))) is different from false [2023-11-29 01:13:05,922 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:13:05,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 41 [2023-11-29 01:13:05,929 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 01:13:05,975 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:13:05,976 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 1 case distinctions, treesize of input 95 treesize of output 88 [2023-11-29 01:13:05,995 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 3 [2023-11-29 01:13:06,009 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 54 treesize of output 46 [2023-11-29 01:13:06,023 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 24 treesize of output 20 [2023-11-29 01:13:06,134 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:13:06,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 41 [2023-11-29 01:13:06,141 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 01:13:06,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:13:06,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 43 [2023-11-29 01:13:06,165 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 3 [2023-11-29 01:13:06,176 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 3 [2023-11-29 01:13:06,208 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-29 01:13:06,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 1 [2023-11-29 01:13:06,230 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-29 01:13:06,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 1 [2023-11-29 01:13:07,158 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 14 not checked. [2023-11-29 01:13:07,158 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:13:07,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2035271872] [2023-11-29 01:13:07,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2035271872] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:13:07,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:13:07,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2023-11-29 01:13:07,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062737577] [2023-11-29 01:13:07,159 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:13:07,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 01:13:07,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:13:07,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 01:13:07,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=364, Unknown=3, NotChecked=120, Total=552 [2023-11-29 01:13:07,160 INFO L87 Difference]: Start difference. First operand 228 states and 273 transitions. Second operand has 24 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:13:16,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:13:16,334 INFO L93 Difference]: Finished difference Result 304 states and 350 transitions. [2023-11-29 01:13:16,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 01:13:16,335 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 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 37 [2023-11-29 01:13:16,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:13:16,337 INFO L225 Difference]: With dead ends: 304 [2023-11-29 01:13:16,337 INFO L226 Difference]: Without dead ends: 304 [2023-11-29 01:13:16,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=308, Invalid=1256, Unknown=8, NotChecked=234, Total=1806 [2023-11-29 01:13:16,338 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 711 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 1673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 663 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:13:16,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 626 Invalid, 1673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 939 Invalid, 0 Unknown, 663 Unchecked, 5.9s Time] [2023-11-29 01:13:16,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-11-29 01:13:16,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 228. [2023-11-29 01:13:16,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 215 states have (on average 1.2651162790697674) internal successors, (272), 227 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:13:16,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 272 transitions. [2023-11-29 01:13:16,343 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 272 transitions. Word has length 37 [2023-11-29 01:13:16,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:13:16,343 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 272 transitions. [2023-11-29 01:13:16,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:13:16,344 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 272 transitions. [2023-11-29 01:13:16,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-29 01:13:16,344 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:13:16,344 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:13:16,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2023-11-29 01:13:16,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:13:16,545 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-29 01:13:16,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:13:16,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1850972574, now seen corresponding path program 2 times [2023-11-29 01:13:16,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:13:16,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1069349944] [2023-11-29 01:13:16,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:13:16,546 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:13:16,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:13:16,547 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:13:16,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_369f7b97-4734-4e8c-984b-2141e6a6252b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-11-29 01:13:16,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:13:16,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:13:16,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-29 01:13:16,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:13:16,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:13:17,200 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 01:13:17,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 01:13:17,239 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 6 treesize of output 5 [2023-11-29 01:13:17,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:13:17,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:13:17,910 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2023-11-29 01:13:17,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2023-11-29 01:13:17,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:13:17,955 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 16 treesize of output 11 [2023-11-29 01:13:18,157 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-29 01:13:18,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2023-11-29 01:13:18,248 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2023-11-29 01:13:18,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2023-11-29 01:13:18,416 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2023-11-29 01:13:18,416 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 1 case distinctions, treesize of input 16 treesize of output 18 [2023-11-29 01:13:18,717 INFO L349 Elim1Store]: treesize reduction 31, result has 18.4 percent of original size [2023-11-29 01:13:18,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 20 [2023-11-29 01:13:18,780 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 20 [2023-11-29 01:13:19,608 INFO L349 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2023-11-29 01:13:19,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 133 treesize of output 110 [2023-11-29 01:13:19,789 INFO L349 Elim1Store]: treesize reduction 44, result has 41.3 percent of original size [2023-11-29 01:13:19,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 43 [2023-11-29 01:13:19,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-29 01:13:19,875 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 3 [2023-11-29 01:13:19,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 40 [2023-11-29 01:13:20,115 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 47 treesize of output 31 [2023-11-29 01:13:22,373 INFO L349 Elim1Store]: treesize reduction 12, result has 94.0 percent of original size [2023-11-29 01:13:22,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 211 treesize of output 349 [2023-11-29 01:15:06,174 WARN L293 SmtUtils]: Spent 29.58s on a formula simplification. DAG size of input: 734 DAG size of output: 508 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)