./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-broom/dll-fst-data.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-broom/dll-fst-data.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0c43b1e86d53f0a623ddcdf970bae6b5fd24ed69ec4a9688050aa705dc6cf897 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:38:03,471 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:38:03,565 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2024-11-14 03:38:03,574 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:38:03,575 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:38:03,605 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:38:03,606 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:38:03,606 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:38:03,607 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:38:03,607 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:38:03,607 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:38:03,607 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:38:03,607 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:38:03,608 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:38:03,608 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:38:03,608 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:38:03,608 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:38:03,608 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:38:03,609 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:38:03,609 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:38:03,609 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:38:03,609 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:38:03,609 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 03:38:03,610 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 03:38:03,610 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:38:03,610 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:38:03,610 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:38:03,610 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 03:38:03,610 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 03:38:03,611 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 03:38:03,611 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:38:03,611 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 03:38:03,611 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:38:03,611 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 03:38:03,611 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:38:03,612 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:38:03,612 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:38:03,612 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:38:03,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:38:03,612 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:38:03,613 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:38:03,613 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:38:03,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:38:03,613 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:38:03,613 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:38:03,613 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:38:03,614 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c43b1e86d53f0a623ddcdf970bae6b5fd24ed69ec4a9688050aa705dc6cf897 [2024-11-14 03:38:03,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:38:03,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:38:03,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:38:03,974 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:38:03,975 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:38:03,977 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/memsafety-broom/dll-fst-data.i Unable to find full path for "g++" [2024-11-14 03:38:06,293 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:38:06,643 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:38:06,643 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/sv-benchmarks/c/memsafety-broom/dll-fst-data.i [2024-11-14 03:38:06,677 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/data/7d21b0f36/160f2cc7ea4748a1a536f0a196b1ed06/FLAG5db906c23 [2024-11-14 03:38:06,705 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/data/7d21b0f36/160f2cc7ea4748a1a536f0a196b1ed06 [2024-11-14 03:38:06,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:38:06,711 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:38:06,713 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:38:06,713 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:38:06,719 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:38:06,720 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:38:06" (1/1) ... [2024-11-14 03:38:06,722 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b1af53c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:38:06, skipping insertion in model container [2024-11-14 03:38:06,723 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:38:06" (1/1) ... [2024-11-14 03:38:06,798 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:38:07,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:38:07,195 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:38:07,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:38:07,284 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:38:07,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:38:07 WrapperNode [2024-11-14 03:38:07,285 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:38:07,286 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:38:07,286 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:38:07,287 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:38:07,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:38:07" (1/1) ... [2024-11-14 03:38:07,309 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:38:07" (1/1) ... [2024-11-14 03:38:07,332 INFO L138 Inliner]: procedures = 121, calls = 22, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 66 [2024-11-14 03:38:07,332 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:38:07,333 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:38:07,333 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:38:07,333 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:38:07,341 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:38:07" (1/1) ... [2024-11-14 03:38:07,342 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:38:07" (1/1) ... [2024-11-14 03:38:07,345 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:38:07" (1/1) ... [2024-11-14 03:38:07,346 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:38:07" (1/1) ... [2024-11-14 03:38:07,355 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:38:07" (1/1) ... [2024-11-14 03:38:07,359 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:38:07" (1/1) ... [2024-11-14 03:38:07,361 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:38:07" (1/1) ... [2024-11-14 03:38:07,362 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:38:07" (1/1) ... [2024-11-14 03:38:07,365 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:38:07,366 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:38:07,366 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:38:07,366 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:38:07,367 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:38:07" (1/1) ... [2024-11-14 03:38:07,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:38:07,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:38:07,411 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:38:07,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:38:07,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 03:38:07,450 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero [2024-11-14 03:38:07,450 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero [2024-11-14 03:38:07,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 03:38:07,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 03:38:07,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 03:38:07,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 03:38:07,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:38:07,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:38:07,596 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:38:07,599 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:38:08,014 INFO L? ?]: Removed 76 outVars from TransFormulas that were not future-live. [2024-11-14 03:38:08,014 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:38:08,093 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:38:08,093 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-14 03:38:08,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:38:08 BoogieIcfgContainer [2024-11-14 03:38:08,094 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:38:08,097 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:38:08,097 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:38:08,102 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:38:08,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:38:06" (1/3) ... [2024-11-14 03:38:08,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2beeb189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:38:08, skipping insertion in model container [2024-11-14 03:38:08,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:38:07" (2/3) ... [2024-11-14 03:38:08,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2beeb189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:38:08, skipping insertion in model container [2024-11-14 03:38:08,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:38:08" (3/3) ... [2024-11-14 03:38:08,105 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-fst-data.i [2024-11-14 03:38:08,122 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:38:08,124 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG dll-fst-data.i that has 2 procedures, 56 locations, 1 initial locations, 3 loop locations, and 28 error locations. [2024-11-14 03:38:08,169 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:38:08,185 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@760f9ea7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:38:08,185 INFO L334 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2024-11-14 03:38:08,189 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 52 states have internal predecessors, (56), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:38:08,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 03:38:08,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:38:08,197 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 03:38:08,198 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:38:08,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:38:08,204 INFO L85 PathProgramCache]: Analyzing trace with hash 4360059, now seen corresponding path program 1 times [2024-11-14 03:38:08,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:38:08,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510359765] [2024-11-14 03:38:08,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:38:08,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:38:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:38:08,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:38:08,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:38:08,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510359765] [2024-11-14 03:38:08,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510359765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:38:08,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:38:08,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:38:08,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524478592] [2024-11-14 03:38:08,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:38:08,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:38:08,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:38:08,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:38:08,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:38:08,475 INFO L87 Difference]: Start difference. First operand has 56 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 52 states have internal predecessors, (56), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:38:08,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:38:08,626 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2024-11-14 03:38:08,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:38:08,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-14 03:38:08,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:38:08,637 INFO L225 Difference]: With dead ends: 53 [2024-11-14 03:38:08,638 INFO L226 Difference]: Without dead ends: 52 [2024-11-14 03:38:08,640 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:38:08,646 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 2 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:38:08,647 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 58 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:38:08,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-14 03:38:08,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-14 03:38:08,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 24 states have (on average 2.125) internal successors, (51), 48 states have internal predecessors, (51), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:38:08,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2024-11-14 03:38:08,698 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 4 [2024-11-14 03:38:08,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:38:08,699 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2024-11-14 03:38:08,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:38:08,699 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2024-11-14 03:38:08,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 03:38:08,700 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:38:08,700 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 03:38:08,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 03:38:08,700 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:38:08,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:38:08,701 INFO L85 PathProgramCache]: Analyzing trace with hash 4360060, now seen corresponding path program 1 times [2024-11-14 03:38:08,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:38:08,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717218338] [2024-11-14 03:38:08,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:38:08,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:38:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:38:08,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:38:08,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:38:08,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717218338] [2024-11-14 03:38:08,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717218338] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:38:08,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:38:08,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:38:08,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676333869] [2024-11-14 03:38:08,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:38:08,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:38:08,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:38:08,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:38:08,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:38:08,884 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:38:08,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:38:09,000 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2024-11-14 03:38:09,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:38:09,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-14 03:38:09,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:38:09,001 INFO L225 Difference]: With dead ends: 49 [2024-11-14 03:38:09,001 INFO L226 Difference]: Without dead ends: 49 [2024-11-14 03:38:09,002 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:38:09,003 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 2 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:38:09,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 61 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:38:09,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-14 03:38:09,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-14 03:38:09,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 24 states have (on average 2.0) internal successors, (48), 45 states have internal predecessors, (48), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:38:09,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2024-11-14 03:38:09,009 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 4 [2024-11-14 03:38:09,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:38:09,010 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2024-11-14 03:38:09,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:38:09,010 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2024-11-14 03:38:09,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-14 03:38:09,010 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:38:09,011 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:38:09,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 03:38:09,011 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:38:09,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:38:09,012 INFO L85 PathProgramCache]: Analyzing trace with hash 131369832, now seen corresponding path program 1 times [2024-11-14 03:38:09,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:38:09,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562660103] [2024-11-14 03:38:09,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:38:09,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:38:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:38:09,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:38:09,315 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:38:09,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562660103] [2024-11-14 03:38:09,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562660103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:38:09,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:38:09,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:38:09,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494750192] [2024-11-14 03:38:09,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:38:09,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 03:38:09,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:38:09,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 03:38:09,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:38:09,318 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:38:09,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:38:09,575 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2024-11-14 03:38:09,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:38:09,580 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2024-11-14 03:38:09,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:38:09,582 INFO L225 Difference]: With dead ends: 49 [2024-11-14 03:38:09,582 INFO L226 Difference]: Without dead ends: 49 [2024-11-14 03:38:09,582 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:38:09,587 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 12 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:38:09,591 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 77 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:38:09,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-14 03:38:09,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2024-11-14 03:38:09,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 41 states have internal predecessors, (44), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:38:09,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2024-11-14 03:38:09,606 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 9 [2024-11-14 03:38:09,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:38:09,606 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2024-11-14 03:38:09,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:38:09,607 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2024-11-14 03:38:09,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-14 03:38:09,607 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:38:09,607 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:38:09,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 03:38:09,608 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:38:09,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:38:09,608 INFO L85 PathProgramCache]: Analyzing trace with hash 131369833, now seen corresponding path program 1 times [2024-11-14 03:38:09,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:38:09,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190405625] [2024-11-14 03:38:09,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:38:09,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:38:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:38:10,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:38:10,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:38:10,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190405625] [2024-11-14 03:38:10,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190405625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:38:10,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:38:10,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:38:10,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630709662] [2024-11-14 03:38:10,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:38:10,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 03:38:10,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:38:10,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 03:38:10,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:38:10,016 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:38:10,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:38:10,204 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2024-11-14 03:38:10,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:38:10,207 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2024-11-14 03:38:10,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:38:10,208 INFO L225 Difference]: With dead ends: 48 [2024-11-14 03:38:10,208 INFO L226 Difference]: Without dead ends: 48 [2024-11-14 03:38:10,208 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:38:10,209 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 4 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:38:10,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 97 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:38:10,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-14 03:38:10,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2024-11-14 03:38:10,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 40 states have internal predecessors, (43), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:38:10,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2024-11-14 03:38:10,222 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 9 [2024-11-14 03:38:10,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:38:10,222 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2024-11-14 03:38:10,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:38:10,223 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2024-11-14 03:38:10,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-14 03:38:10,223 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:38:10,223 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:38:10,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 03:38:10,224 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:38:10,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:38:10,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1328597739, now seen corresponding path program 1 times [2024-11-14 03:38:10,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:38:10,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760005669] [2024-11-14 03:38:10,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:38:10,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:38:10,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:38:10,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:38:10,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:38:10,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760005669] [2024-11-14 03:38:10,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760005669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:38:10,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:38:10,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 03:38:10,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921778238] [2024-11-14 03:38:10,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:38:10,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 03:38:10,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:38:10,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 03:38:10,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:38:10,426 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:38:10,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:38:10,626 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2024-11-14 03:38:10,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 03:38:10,627 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-11-14 03:38:10,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:38:10,628 INFO L225 Difference]: With dead ends: 50 [2024-11-14 03:38:10,628 INFO L226 Difference]: Without dead ends: 50 [2024-11-14 03:38:10,628 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:38:10,629 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 1 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:38:10,629 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 109 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:38:10,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-14 03:38:10,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2024-11-14 03:38:10,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 45 states have internal predecessors, (51), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:38:10,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2024-11-14 03:38:10,642 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 14 [2024-11-14 03:38:10,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:38:10,642 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2024-11-14 03:38:10,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:38:10,642 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2024-11-14 03:38:10,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-14 03:38:10,643 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:38:10,643 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:38:10,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 03:38:10,643 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:38:10,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:38:10,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1328597740, now seen corresponding path program 1 times [2024-11-14 03:38:10,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:38:10,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848671378] [2024-11-14 03:38:10,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:38:10,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:38:10,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:38:11,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:38:11,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:38:11,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848671378] [2024-11-14 03:38:11,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848671378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:38:11,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:38:11,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 03:38:11,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924014094] [2024-11-14 03:38:11,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:38:11,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 03:38:11,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:38:11,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 03:38:11,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:38:11,028 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:38:11,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:38:11,239 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2024-11-14 03:38:11,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 03:38:11,240 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-11-14 03:38:11,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:38:11,241 INFO L225 Difference]: With dead ends: 50 [2024-11-14 03:38:11,241 INFO L226 Difference]: Without dead ends: 50 [2024-11-14 03:38:11,241 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:38:11,246 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:38:11,246 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 114 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:38:11,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-14 03:38:11,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2024-11-14 03:38:11,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 45 states have internal predecessors, (50), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:38:11,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2024-11-14 03:38:11,258 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 14 [2024-11-14 03:38:11,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:38:11,258 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2024-11-14 03:38:11,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:38:11,259 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2024-11-14 03:38:11,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-14 03:38:11,259 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:38:11,259 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:38:11,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 03:38:11,260 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:38:11,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:38:11,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1763140608, now seen corresponding path program 1 times [2024-11-14 03:38:11,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:38:11,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522578077] [2024-11-14 03:38:11,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:38:11,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:38:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:38:11,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:38:11,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:38:11,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522578077] [2024-11-14 03:38:11,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522578077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:38:11,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:38:11,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 03:38:11,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500231673] [2024-11-14 03:38:11,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:38:11,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 03:38:11,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:38:11,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 03:38:11,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:38:11,447 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:38:11,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:38:11,568 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2024-11-14 03:38:11,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 03:38:11,568 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-14 03:38:11,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:38:11,569 INFO L225 Difference]: With dead ends: 51 [2024-11-14 03:38:11,569 INFO L226 Difference]: Without dead ends: 51 [2024-11-14 03:38:11,570 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:38:11,570 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 17 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:38:11,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 162 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:38:11,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-14 03:38:11,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2024-11-14 03:38:11,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 46 states have internal predecessors, (50), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:38:11,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2024-11-14 03:38:11,582 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 15 [2024-11-14 03:38:11,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:38:11,582 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2024-11-14 03:38:11,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:38:11,583 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2024-11-14 03:38:11,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-14 03:38:11,583 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:38:11,583 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:38:11,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-14 03:38:11,584 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:38:11,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:38:11,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1177185412, now seen corresponding path program 1 times [2024-11-14 03:38:11,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:38:11,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398017044] [2024-11-14 03:38:11,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:38:11,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:38:11,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:38:12,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:38:12,481 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:38:12,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398017044] [2024-11-14 03:38:12,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398017044] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:38:12,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170980627] [2024-11-14 03:38:12,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:38:12,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:38:12,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:38:12,485 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:38:12,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 03:38:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:38:12,641 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-14 03:38:12,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:38:12,720 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 [2024-11-14 03:38:12,734 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 11 treesize of output 7 [2024-11-14 03:38:12,766 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 [2024-11-14 03:38:12,783 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 [2024-11-14 03:38:12,836 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 [2024-11-14 03:38:12,845 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 [2024-11-14 03:38:13,074 INFO L349 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2024-11-14 03:38:13,075 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 27 treesize of output 17 [2024-11-14 03:38:13,147 INFO L349 Elim1Store]: treesize reduction 40, result has 40.3 percent of original size [2024-11-14 03:38:13,147 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 34 treesize of output 33 [2024-11-14 03:38:13,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:38:13,522 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:38:14,683 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 10 treesize of output 8 [2024-11-14 03:38:14,692 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 14 treesize of output 12 [2024-11-14 03:38:14,705 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 10 treesize of output 8 [2024-11-14 03:38:14,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:38:14,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:38:14,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170980627] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:38:14,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1836914315] [2024-11-14 03:38:14,765 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 03:38:14,765 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:38:14,770 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:38:14,776 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:38:14,776 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:38:15,577 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 22 for LOIs [2024-11-14 03:38:15,616 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:38:19,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1836914315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:38:19,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:38:19,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10, 11, 10] total 35 [2024-11-14 03:38:19,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094636556] [2024-11-14 03:38:19,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:38:19,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-14 03:38:19,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:38:19,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-14 03:38:19,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1059, Unknown=0, NotChecked=0, Total=1190 [2024-11-14 03:38:19,887 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 14 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:38:21,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:38:21,861 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2024-11-14 03:38:21,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-14 03:38:21,862 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-11-14 03:38:21,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:38:21,865 INFO L225 Difference]: With dead ends: 58 [2024-11-14 03:38:21,865 INFO L226 Difference]: Without dead ends: 58 [2024-11-14 03:38:21,866 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=131, Invalid=1059, Unknown=0, NotChecked=0, Total=1190 [2024-11-14 03:38:21,866 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 1 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-14 03:38:21,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 79 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-14 03:38:21,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-14 03:38:21,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2024-11-14 03:38:21,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 35 states have (on average 1.6) internal successors, (56), 51 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:38:21,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2024-11-14 03:38:21,883 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 16 [2024-11-14 03:38:21,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:38:21,883 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2024-11-14 03:38:21,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:38:21,884 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2024-11-14 03:38:21,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-14 03:38:21,884 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:38:21,884 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:38:21,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 03:38:22,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:38:22,085 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:38:22,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:38:22,086 INFO L85 PathProgramCache]: Analyzing trace with hash 2133011847, now seen corresponding path program 1 times [2024-11-14 03:38:22,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:38:22,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569009571] [2024-11-14 03:38:22,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:38:22,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:38:22,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:38:22,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:38:22,232 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:38:22,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569009571] [2024-11-14 03:38:22,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569009571] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:38:22,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986157504] [2024-11-14 03:38:22,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:38:22,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:38:22,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:38:22,235 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:38:22,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 03:38:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:38:22,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-14 03:38:22,366 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:38:22,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:38:22,387 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:38:22,411 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-14 03:38:22,411 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 [2024-11-14 03:38:22,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:38:22,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986157504] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:38:22,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1388495996] [2024-11-14 03:38:22,431 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2024-11-14 03:38:22,431 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:38:22,432 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:38:22,432 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:38:22,432 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:38:23,092 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 22 for LOIs [2024-11-14 03:38:23,124 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:38:26,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1388495996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:38:26,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:38:26,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [4, 4, 4] total 17 [2024-11-14 03:38:26,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459598122] [2024-11-14 03:38:26,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:38:26,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-14 03:38:26,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:38:26,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-14 03:38:26,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-11-14 03:38:26,678 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 15 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:38:28,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:38:28,605 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2024-11-14 03:38:28,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-14 03:38:28,605 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-14 03:38:28,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:38:28,606 INFO L225 Difference]: With dead ends: 60 [2024-11-14 03:38:28,606 INFO L226 Difference]: Without dead ends: 60 [2024-11-14 03:38:28,607 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-11-14 03:38:28,608 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 2 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-14 03:38:28,608 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 56 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-14 03:38:28,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-14 03:38:28,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2024-11-14 03:38:28,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 54 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:38:28,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2024-11-14 03:38:28,614 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 17 [2024-11-14 03:38:28,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:38:28,614 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2024-11-14 03:38:28,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:38:28,615 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2024-11-14 03:38:28,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-14 03:38:28,615 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:38:28,615 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:38:28,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 03:38:28,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:38:28,821 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:38:28,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:38:28,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1937542794, now seen corresponding path program 1 times [2024-11-14 03:38:28,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:38:28,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481095802] [2024-11-14 03:38:28,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:38:28,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:38:28,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:38:29,151 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:38:29,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:38:29,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481095802] [2024-11-14 03:38:29,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481095802] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:38:29,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296997608] [2024-11-14 03:38:29,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:38:29,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:38:29,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:38:29,155 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:38:29,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 03:38:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:38:29,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 03:38:29,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:38:29,304 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_~pi~0.base (select |c_#valid| alloc_and_zero_~pi~0.base))))) is different from true [2024-11-14 03:38:29,347 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-14 03:38:29,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-14 03:38:29,351 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:38:29,352 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:38:29,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296997608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:38:29,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:38:29,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 10 [2024-11-14 03:38:29,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039285745] [2024-11-14 03:38:29,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:38:29,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:38:29,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:38:29,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:38:29,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=69, Unknown=1, NotChecked=16, Total=110 [2024-11-14 03:38:29,353 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:38:29,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:38:29,430 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2024-11-14 03:38:29,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:38:29,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2024-11-14 03:38:29,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:38:29,433 INFO L225 Difference]: With dead ends: 61 [2024-11-14 03:38:29,433 INFO L226 Difference]: Without dead ends: 61 [2024-11-14 03:38:29,433 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=69, Unknown=1, NotChecked=16, Total=110 [2024-11-14 03:38:29,434 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 10 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:38:29,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 47 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 66 Unchecked, 0.1s Time] [2024-11-14 03:38:29,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-14 03:38:29,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-14 03:38:29,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 39 states have (on average 1.564102564102564) internal successors, (61), 55 states have internal predecessors, (61), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:38:29,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2024-11-14 03:38:29,440 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 18 [2024-11-14 03:38:29,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:38:29,441 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2024-11-14 03:38:29,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:38:29,441 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2024-11-14 03:38:29,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-14 03:38:29,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:38:29,442 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:38:29,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-14 03:38:29,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:38:29,643 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:38:29,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:38:29,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1937542793, now seen corresponding path program 1 times [2024-11-14 03:38:29,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:38:29,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757538599] [2024-11-14 03:38:29,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:38:29,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:38:29,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:38:30,228 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:38:30,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:38:30,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757538599] [2024-11-14 03:38:30,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757538599] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:38:30,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139884526] [2024-11-14 03:38:30,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:38:30,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:38:30,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:38:30,233 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:38:30,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 03:38:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:38:30,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-14 03:38:30,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:38:30,651 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= (store |c_old(#length)| alloc_and_zero_~pi~0.base (select |c_#length| alloc_and_zero_~pi~0.base)) |c_#length|))) is different from true [2024-11-14 03:38:30,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:38:30,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 03:38:30,707 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 03:38:30,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-14 03:38:30,738 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-11-14 03:38:30,738 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:38:30,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139884526] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:38:30,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [332027010] [2024-11-14 03:38:30,888 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2024-11-14 03:38:30,888 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:38:30,888 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:38:30,889 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:38:30,889 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:38:31,322 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 109 for LOIs [2024-11-14 03:38:31,498 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:38:56,481 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1518#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_create_~now~0#1.base_42| Int)) (and (or (and (exists ((|v_#valid_81| (Array Int Int))) (= (select |v_#valid_81| |ULTIMATE.start_create_~dll~0#1.base|) 0)) (<= (+ |ULTIMATE.start_create_#t~ret7#1.base| 1) |#StackHeapBarrier|) (not (= |ULTIMATE.start_create_~dll~0#1.base| 0)) (exists ((|v_#memory_int_74| (Array Int (Array Int Int))) (|v_#memory_int_75| (Array Int (Array Int Int))) (|v_#memory_int_76| (Array Int (Array Int Int)))) (and (= |v_#memory_int_76| (store |v_#memory_int_75| |ULTIMATE.start_create_#t~ret7#1.base| (store (select |v_#memory_int_75| |ULTIMATE.start_create_#t~ret7#1.base|) 8 (select (select |v_#memory_int_76| |ULTIMATE.start_create_#t~ret7#1.base|) 8)))) (= |#memory_int| (store |v_#memory_int_76| |ULTIMATE.start_create_#t~ret7#1.base| (store (select |v_#memory_int_76| |ULTIMATE.start_create_#t~ret7#1.base|) 16 0))) (= |v_#memory_int_75| (store |v_#memory_int_74| |ULTIMATE.start_create_#t~ret7#1.base| (store (select |v_#memory_int_74| |ULTIMATE.start_create_#t~ret7#1.base|) 0 (select (select |v_#memory_int_75| |ULTIMATE.start_create_#t~ret7#1.base|) 0)))))) (exists ((|v_ULTIMATE.start_create_#t~nondet6#1_17| Int)) (and (not (= |v_ULTIMATE.start_create_#t~nondet6#1_17| 0)) (<= |v_ULTIMATE.start_create_#t~nondet6#1_17| 2147483647) (<= 0 (+ |v_ULTIMATE.start_create_#t~nondet6#1_17| 2147483648)))) (exists ((|v_#length_70| (Array Int Int))) (= |#length| (store |v_#length_70| |ULTIMATE.start_create_#t~ret7#1.base| 20))) (exists ((|v_#memory_$Pointer$.offset_98| (Array Int (Array Int Int)))) (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_98| |ULTIMATE.start_create_#t~ret7#1.base| (store (store (store (select |v_#memory_$Pointer$.offset_98| |ULTIMATE.start_create_#t~ret7#1.base|) 0 0) 8 0) 16 (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_create_#t~ret7#1.base|) 16))))) (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_18| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_96| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_93| (Array Int (Array Int Int)))) (and (= (store |v_#memory_$Pointer$.offset_93| |ULTIMATE.start_create_~dll~0#1.base| (store (store (store (select |v_#memory_$Pointer$.offset_93| |ULTIMATE.start_create_~dll~0#1.base|) 0 0) 8 0) 16 (select (select |v_#memory_$Pointer$.offset_96| |ULTIMATE.start_create_~dll~0#1.base|) 16))) |v_#memory_$Pointer$.offset_96|) (= (store |v_#memory_$Pointer$.offset_96| |v_ULTIMATE.start_create_~now~0#1.base_42| (store (select |v_#memory_$Pointer$.offset_96| |v_ULTIMATE.start_create_~now~0#1.base_42|) 16 (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_18| |v_ULTIMATE.start_create_~now~0#1.base_42|) 16))) |v_#memory_$Pointer$.offset_BEFORE_CALL_18|))) (exists ((|v_#memory_$Pointer$.base_98| (Array Int (Array Int Int)))) (= (store |v_#memory_$Pointer$.base_98| |ULTIMATE.start_create_#t~ret7#1.base| (store (store (store (select |v_#memory_$Pointer$.base_98| |ULTIMATE.start_create_#t~ret7#1.base|) 0 0) 8 0) 16 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_create_#t~ret7#1.base|) 16))) |#memory_$Pointer$.base|)) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (not (= |ULTIMATE.start_create_#t~ret7#1.base| 0)) (= |ULTIMATE.start_create_~dll~0#1.base| |v_ULTIMATE.start_create_~now~0#1.base_42|) (exists ((|v_old(#memory_int)_AFTER_CALL_14| (Array Int (Array Int Int))) (|v_#memory_int_81| (Array Int (Array Int Int))) (|v_#memory_int_82| (Array Int (Array Int Int))) (|v_#memory_int_83| (Array Int (Array Int Int)))) (and (<= 0 (+ (select (select |v_old(#memory_int)_AFTER_CALL_14| |v_ULTIMATE.start_create_~now~0#1.base_42|) 16) 2147483648)) (= (store |v_#memory_int_82| |ULTIMATE.start_create_~dll~0#1.base| (store (select |v_#memory_int_82| |ULTIMATE.start_create_~dll~0#1.base|) 8 (select (select |v_#memory_int_83| |ULTIMATE.start_create_~dll~0#1.base|) 8))) |v_#memory_int_83|) (= |v_old(#memory_int)_AFTER_CALL_14| (store (store |v_#memory_int_83| |ULTIMATE.start_create_~dll~0#1.base| (store (select |v_#memory_int_83| |ULTIMATE.start_create_~dll~0#1.base|) 16 0)) |v_ULTIMATE.start_create_~now~0#1.base_42| (store (select (store |v_#memory_int_83| |ULTIMATE.start_create_~dll~0#1.base| (store (select |v_#memory_int_83| |ULTIMATE.start_create_~dll~0#1.base|) 16 0)) |v_ULTIMATE.start_create_~now~0#1.base_42|) 16 (select (select |v_old(#memory_int)_AFTER_CALL_14| |v_ULTIMATE.start_create_~now~0#1.base_42|) 16)))) (= (store |v_#memory_int_81| |ULTIMATE.start_create_~dll~0#1.base| (store (select |v_#memory_int_81| |ULTIMATE.start_create_~dll~0#1.base|) 0 (select (select |v_#memory_int_82| |ULTIMATE.start_create_~dll~0#1.base|) 0))) |v_#memory_int_82|) (<= (select (select |v_old(#memory_int)_AFTER_CALL_14| |v_ULTIMATE.start_create_~now~0#1.base_42|) 16) 2147483647))) (exists ((|v_#memory_$Pointer$.base_96| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_93| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_BEFORE_CALL_18| (Array Int (Array Int Int)))) (and (= (store |v_#memory_$Pointer$.base_93| |ULTIMATE.start_create_~dll~0#1.base| (store (store (store (select |v_#memory_$Pointer$.base_93| |ULTIMATE.start_create_~dll~0#1.base|) 0 0) 8 0) 16 (select (select |v_#memory_$Pointer$.base_96| |ULTIMATE.start_create_~dll~0#1.base|) 16))) |v_#memory_$Pointer$.base_96|) (= |v_#memory_$Pointer$.base_BEFORE_CALL_18| (store |v_#memory_$Pointer$.base_96| |v_ULTIMATE.start_create_~now~0#1.base_42| (store (select |v_#memory_$Pointer$.base_96| |v_ULTIMATE.start_create_~now~0#1.base_42|) 16 (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_18| |v_ULTIMATE.start_create_~now~0#1.base_42|) 16)))))) (exists ((|v_#valid_79| (Array Int Int))) (and (= (select |v_#valid_79| |ULTIMATE.start_create_#t~ret7#1.base|) 0) (= |#valid| (store |v_#valid_79| |ULTIMATE.start_create_#t~ret7#1.base| 1)))) (<= (+ |ULTIMATE.start_create_~dll~0#1.base| 1) |#StackHeapBarrier|)) (and (exists ((|v_#memory_$Pointer$.base_97| (Array Int (Array Int Int)))) (= (store |v_#memory_$Pointer$.base_97| |ULTIMATE.start_create_#t~ret7#1.base| (store (store (store (select |v_#memory_$Pointer$.base_97| |ULTIMATE.start_create_#t~ret7#1.base|) 0 0) 8 0) 16 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_create_#t~ret7#1.base|) 16))) |#memory_$Pointer$.base|)) (<= (+ |ULTIMATE.start_create_#t~ret7#1.base| 1) |#StackHeapBarrier|) (exists ((|v_#memory_$Pointer$.offset_93| (Array Int (Array Int Int)))) (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_93| |ULTIMATE.start_create_#t~ret7#1.base| (store (store (store (select |v_#memory_$Pointer$.offset_93| |ULTIMATE.start_create_#t~ret7#1.base|) 0 0) 8 0) 16 (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_create_#t~ret7#1.base|) 16))))) (not (= |ULTIMATE.start_create_~dll~0#1.base| 0)) (exists ((|v_ULTIMATE.start_create_#t~nondet6#1_17| Int)) (and (not (= |v_ULTIMATE.start_create_#t~nondet6#1_17| 0)) (<= |v_ULTIMATE.start_create_#t~nondet6#1_17| 2147483647) (<= 0 (+ |v_ULTIMATE.start_create_#t~nondet6#1_17| 2147483648)))) (exists ((|v_#memory_$Pointer$.offset_97| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_96| (Array Int (Array Int Int))) (|v_old(#memory_$Pointer$.offset)_AFTER_CALL_13| (Array Int (Array Int Int)))) (and (= (store |v_#memory_$Pointer$.offset_97| |ULTIMATE.start_create_~dll~0#1.base| (store (store (store (select |v_#memory_$Pointer$.offset_97| |ULTIMATE.start_create_~dll~0#1.base|) 0 0) 8 0) 16 (select (select |v_#memory_$Pointer$.offset_96| |ULTIMATE.start_create_~dll~0#1.base|) 16))) |v_#memory_$Pointer$.offset_96|) (= |v_old(#memory_$Pointer$.offset)_AFTER_CALL_13| (store |v_#memory_$Pointer$.offset_96| |v_ULTIMATE.start_create_~now~0#1.base_42| (store (select |v_#memory_$Pointer$.offset_96| |v_ULTIMATE.start_create_~now~0#1.base_42|) 16 (select (select |v_old(#memory_$Pointer$.offset)_AFTER_CALL_13| |v_ULTIMATE.start_create_~now~0#1.base_42|) 16)))))) (exists ((|v_#memory_$Pointer$.base_96| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_93| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_BEFORE_CALL_16| (Array Int (Array Int Int)))) (and (= (store |v_#memory_$Pointer$.base_96| |v_ULTIMATE.start_create_~now~0#1.base_42| (store (select |v_#memory_$Pointer$.base_96| |v_ULTIMATE.start_create_~now~0#1.base_42|) 16 (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_16| |v_ULTIMATE.start_create_~now~0#1.base_42|) 16))) |v_#memory_$Pointer$.base_BEFORE_CALL_16|) (= (store |v_#memory_$Pointer$.base_93| |ULTIMATE.start_create_~dll~0#1.base| (store (store (store (select |v_#memory_$Pointer$.base_93| |ULTIMATE.start_create_~dll~0#1.base|) 0 0) 8 0) 16 (select (select |v_#memory_$Pointer$.base_96| |ULTIMATE.start_create_~dll~0#1.base|) 16))) |v_#memory_$Pointer$.base_96|))) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (exists ((|v_#memory_int_74| (Array Int (Array Int Int))) (|v_old(#memory_int)_AFTER_CALL_13| (Array Int (Array Int Int))) (|v_#memory_int_75| (Array Int (Array Int Int))) (|v_#memory_int_76| (Array Int (Array Int Int)))) (and (= |v_#memory_int_76| (store |v_#memory_int_75| |ULTIMATE.start_create_~dll~0#1.base| (store (select |v_#memory_int_75| |ULTIMATE.start_create_~dll~0#1.base|) 8 (select (select |v_#memory_int_76| |ULTIMATE.start_create_~dll~0#1.base|) 8)))) (<= 0 (+ 2147483648 (select (select |v_old(#memory_int)_AFTER_CALL_13| |v_ULTIMATE.start_create_~now~0#1.base_42|) 16))) (= |v_old(#memory_int)_AFTER_CALL_13| (store (store |v_#memory_int_76| |ULTIMATE.start_create_~dll~0#1.base| (store (select |v_#memory_int_76| |ULTIMATE.start_create_~dll~0#1.base|) 16 0)) |v_ULTIMATE.start_create_~now~0#1.base_42| (store (select (store |v_#memory_int_76| |ULTIMATE.start_create_~dll~0#1.base| (store (select |v_#memory_int_76| |ULTIMATE.start_create_~dll~0#1.base|) 16 0)) |v_ULTIMATE.start_create_~now~0#1.base_42|) 16 (select (select |v_old(#memory_int)_AFTER_CALL_13| |v_ULTIMATE.start_create_~now~0#1.base_42|) 16)))) (<= (select (select |v_old(#memory_int)_AFTER_CALL_13| |v_ULTIMATE.start_create_~now~0#1.base_42|) 16) 2147483647) (= (store |v_#memory_int_74| |ULTIMATE.start_create_~dll~0#1.base| (store (select |v_#memory_int_74| |ULTIMATE.start_create_~dll~0#1.base|) 0 (select (select |v_#memory_int_75| |ULTIMATE.start_create_~dll~0#1.base|) 0))) |v_#memory_int_75|))) (exists ((|v_#length_68| (Array Int Int))) (= |#length| (store |v_#length_68| |ULTIMATE.start_create_#t~ret7#1.base| 20))) (exists ((|v_#memory_int_78| (Array Int (Array Int Int))) (|v_#memory_int_79| (Array Int (Array Int Int))) (|v_#memory_int_80| (Array Int (Array Int Int)))) (and (= |v_#memory_int_79| (store |v_#memory_int_78| |ULTIMATE.start_create_#t~ret7#1.base| (store (select |v_#memory_int_78| |ULTIMATE.start_create_#t~ret7#1.base|) 0 (select (select |v_#memory_int_79| |ULTIMATE.start_create_#t~ret7#1.base|) 0)))) (= (store |v_#memory_int_79| |ULTIMATE.start_create_#t~ret7#1.base| (store (select |v_#memory_int_79| |ULTIMATE.start_create_#t~ret7#1.base|) 8 (select (select |v_#memory_int_80| |ULTIMATE.start_create_#t~ret7#1.base|) 8))) |v_#memory_int_80|) (= |#memory_int| (store |v_#memory_int_80| |ULTIMATE.start_create_#t~ret7#1.base| (store (select |v_#memory_int_80| |ULTIMATE.start_create_#t~ret7#1.base|) 16 0))))) (not (= |ULTIMATE.start_create_#t~ret7#1.base| 0)) (= |ULTIMATE.start_create_~dll~0#1.base| |v_ULTIMATE.start_create_~now~0#1.base_42|) (exists ((|v_#valid_80| (Array Int Int))) (= (select |v_#valid_80| |ULTIMATE.start_create_~dll~0#1.base|) 0)) (exists ((|v_#valid_79| (Array Int Int))) (and (= (select |v_#valid_79| |ULTIMATE.start_create_#t~ret7#1.base|) 0) (= |#valid| (store |v_#valid_79| |ULTIMATE.start_create_#t~ret7#1.base| 1)))) (<= (+ |ULTIMATE.start_create_~dll~0#1.base| 1) |#StackHeapBarrier|))) (<= (select |#length| |v_ULTIMATE.start_create_~now~0#1.base_42|) 7))) (= |ULTIMATE.start_create_#t~ret7#1.offset| 0) (= |ULTIMATE.start_create_~dll~0#1.offset| 0))' at error location [2024-11-14 03:38:56,481 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:38:56,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 03:38:56,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-14 03:38:56,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058630337] [2024-11-14 03:38:56,482 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 03:38:56,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-14 03:38:56,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:38:56,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-14 03:38:56,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=749, Unknown=3, NotChecked=56, Total=930 [2024-11-14 03:38:56,485 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand has 17 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 03:38:57,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:38:57,495 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2024-11-14 03:38:57,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 03:38:57,496 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 18 [2024-11-14 03:38:57,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:38:57,497 INFO L225 Difference]: With dead ends: 70 [2024-11-14 03:38:57,497 INFO L226 Difference]: Without dead ends: 70 [2024-11-14 03:38:57,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=149, Invalid=908, Unknown=3, NotChecked=62, Total=1122 [2024-11-14 03:38:57,498 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 36 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 03:38:57,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 194 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 384 Invalid, 0 Unknown, 59 Unchecked, 0.7s Time] [2024-11-14 03:38:57,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-14 03:38:57,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2024-11-14 03:38:57,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 44 states have (on average 1.5681818181818181) internal successors, (69), 60 states have internal predecessors, (69), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:38:57,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 75 transitions. [2024-11-14 03:38:57,505 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 75 transitions. Word has length 18 [2024-11-14 03:38:57,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:38:57,505 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 75 transitions. [2024-11-14 03:38:57,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 03:38:57,506 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 75 transitions. [2024-11-14 03:38:57,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-14 03:38:57,506 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:38:57,506 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:38:57,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 03:38:57,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:38:57,710 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:38:57,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:38:57,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1125016518, now seen corresponding path program 1 times [2024-11-14 03:38:57,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:38:57,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150417700] [2024-11-14 03:38:57,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:38:57,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:38:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:38:57,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:38:57,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:38:57,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150417700] [2024-11-14 03:38:57,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150417700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:38:57,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:38:57,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 03:38:57,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217367787] [2024-11-14 03:38:57,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:38:57,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 03:38:57,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:38:57,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 03:38:57,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:38:57,968 INFO L87 Difference]: Start difference. First operand 66 states and 75 transitions. Second operand has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:38:58,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:38:58,428 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2024-11-14 03:38:58,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 03:38:58,428 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2024-11-14 03:38:58,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:38:58,429 INFO L225 Difference]: With dead ends: 71 [2024-11-14 03:38:58,429 INFO L226 Difference]: Without dead ends: 71 [2024-11-14 03:38:58,429 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:38:58,430 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 20 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:38:58,431 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 140 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 03:38:58,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-14 03:38:58,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2024-11-14 03:38:58,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 48 states have (on average 1.6041666666666667) internal successors, (77), 64 states have internal predecessors, (77), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:38:58,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 83 transitions. [2024-11-14 03:38:58,436 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 83 transitions. Word has length 19 [2024-11-14 03:38:58,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:38:58,436 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 83 transitions. [2024-11-14 03:38:58,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:38:58,436 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 83 transitions. [2024-11-14 03:38:58,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-14 03:38:58,437 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:38:58,437 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:38:58,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-14 03:38:58,438 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:38:58,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:38:58,438 INFO L85 PathProgramCache]: Analyzing trace with hash 2037262317, now seen corresponding path program 1 times [2024-11-14 03:38:58,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:38:58,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780795355] [2024-11-14 03:38:58,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:38:58,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:38:58,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:38:58,669 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 03:38:58,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:38:58,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780795355] [2024-11-14 03:38:58,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780795355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:38:58,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:38:58,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 03:38:58,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345824556] [2024-11-14 03:38:58,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:38:58,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 03:38:58,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:38:58,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 03:38:58,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:38:58,672 INFO L87 Difference]: Start difference. First operand 70 states and 83 transitions. Second operand has 7 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 03:38:59,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:38:59,104 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2024-11-14 03:38:59,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 03:38:59,105 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2024-11-14 03:38:59,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:38:59,106 INFO L225 Difference]: With dead ends: 69 [2024-11-14 03:38:59,106 INFO L226 Difference]: Without dead ends: 69 [2024-11-14 03:38:59,106 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:38:59,107 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 7 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:38:59,107 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 99 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 03:38:59,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-14 03:38:59,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-14 03:38:59,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 48 states have (on average 1.5625) internal successors, (75), 63 states have internal predecessors, (75), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:38:59,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 81 transitions. [2024-11-14 03:38:59,115 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 81 transitions. Word has length 20 [2024-11-14 03:38:59,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:38:59,115 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 81 transitions. [2024-11-14 03:38:59,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 03:38:59,116 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 81 transitions. [2024-11-14 03:38:59,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-14 03:38:59,118 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:38:59,119 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:38:59,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-14 03:38:59,119 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:38:59,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:38:59,119 INFO L85 PathProgramCache]: Analyzing trace with hash 2037262318, now seen corresponding path program 1 times [2024-11-14 03:38:59,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:38:59,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078870312] [2024-11-14 03:38:59,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:38:59,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:38:59,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:38:59,556 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:38:59,556 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:38:59,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078870312] [2024-11-14 03:38:59,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078870312] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:38:59,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:38:59,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 03:38:59,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811992150] [2024-11-14 03:38:59,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:38:59,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 03:38:59,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:38:59,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 03:38:59,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:38:59,560 INFO L87 Difference]: Start difference. First operand 69 states and 81 transitions. Second operand has 7 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 03:38:59,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:38:59,958 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2024-11-14 03:38:59,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 03:38:59,959 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2024-11-14 03:38:59,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:38:59,959 INFO L225 Difference]: With dead ends: 68 [2024-11-14 03:38:59,959 INFO L226 Difference]: Without dead ends: 68 [2024-11-14 03:38:59,960 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:38:59,960 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 3 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:38:59,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 113 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 03:38:59,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-14 03:38:59,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2024-11-14 03:38:59,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 48 states have (on average 1.5208333333333333) internal successors, (73), 62 states have internal predecessors, (73), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:38:59,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 79 transitions. [2024-11-14 03:38:59,966 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 79 transitions. Word has length 20 [2024-11-14 03:38:59,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:38:59,966 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 79 transitions. [2024-11-14 03:38:59,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 03:38:59,966 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 79 transitions. [2024-11-14 03:38:59,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-14 03:38:59,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:38:59,967 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:38:59,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-14 03:38:59,968 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:38:59,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:38:59,968 INFO L85 PathProgramCache]: Analyzing trace with hash 515773815, now seen corresponding path program 1 times [2024-11-14 03:38:59,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:38:59,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601147742] [2024-11-14 03:38:59,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:38:59,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:38:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:39:00,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:39:00,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:39:00,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601147742] [2024-11-14 03:39:00,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601147742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:39:00,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:39:00,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:39:00,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55492510] [2024-11-14 03:39:00,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:39:00,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:39:00,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:39:00,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:39:00,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:39:00,016 INFO L87 Difference]: Start difference. First operand 68 states and 79 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:39:00,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:39:00,148 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2024-11-14 03:39:00,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:39:00,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-11-14 03:39:00,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:39:00,149 INFO L225 Difference]: With dead ends: 67 [2024-11-14 03:39:00,149 INFO L226 Difference]: Without dead ends: 67 [2024-11-14 03:39:00,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:39:00,150 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:39:00,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 41 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:39:00,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-14 03:39:00,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-11-14 03:39:00,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 48 states have (on average 1.5) internal successors, (72), 61 states have internal predecessors, (72), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:39:00,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 78 transitions. [2024-11-14 03:39:00,158 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 78 transitions. Word has length 20 [2024-11-14 03:39:00,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:39:00,159 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 78 transitions. [2024-11-14 03:39:00,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:39:00,159 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 78 transitions. [2024-11-14 03:39:00,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-14 03:39:00,161 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:39:00,162 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:39:00,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-14 03:39:00,162 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:39:00,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:39:00,162 INFO L85 PathProgramCache]: Analyzing trace with hash -695922636, now seen corresponding path program 1 times [2024-11-14 03:39:00,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:39:00,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607318083] [2024-11-14 03:39:00,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:39:00,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:39:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:39:01,143 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:39:01,144 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:39:01,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607318083] [2024-11-14 03:39:01,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607318083] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:39:01,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828720636] [2024-11-14 03:39:01,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:39:01,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:39:01,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:39:01,147 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:39:01,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 03:39:01,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:39:01,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-14 03:39:01,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:39:01,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-14 03:39:01,504 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 03:39:01,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-14 03:39:01,575 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 [2024-11-14 03:39:01,594 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 [2024-11-14 03:39:01,791 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-14 03:39:01,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-14 03:39:01,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-14 03:39:01,824 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 [2024-11-14 03:39:01,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 03:39:01,897 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:39:01,898 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:39:01,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828720636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:39:01,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:39:01,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 19 [2024-11-14 03:39:01,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886109895] [2024-11-14 03:39:01,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:39:01,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 03:39:01,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:39:01,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 03:39:01,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2024-11-14 03:39:01,900 INFO L87 Difference]: Start difference. First operand 67 states and 78 transitions. Second operand has 10 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:39:02,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:39:02,575 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2024-11-14 03:39:02,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 03:39:02,576 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2024-11-14 03:39:02,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:39:02,577 INFO L225 Difference]: With dead ends: 68 [2024-11-14 03:39:02,577 INFO L226 Difference]: Without dead ends: 68 [2024-11-14 03:39:02,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2024-11-14 03:39:02,578 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 14 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:39:02,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 119 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 03:39:02,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-14 03:39:02,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2024-11-14 03:39:02,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 61 states have internal predecessors, (71), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:39:02,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 77 transitions. [2024-11-14 03:39:02,582 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 77 transitions. Word has length 22 [2024-11-14 03:39:02,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:39:02,583 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 77 transitions. [2024-11-14 03:39:02,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:39:02,583 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 77 transitions. [2024-11-14 03:39:02,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-14 03:39:02,584 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:39:02,584 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:39:02,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-14 03:39:02,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-14 03:39:02,788 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:39:02,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:39:02,789 INFO L85 PathProgramCache]: Analyzing trace with hash -695922637, now seen corresponding path program 1 times [2024-11-14 03:39:02,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:39:02,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758936072] [2024-11-14 03:39:02,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:39:02,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:39:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:39:03,546 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:39:03,546 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:39:03,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758936072] [2024-11-14 03:39:03,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758936072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:39:03,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:39:03,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-14 03:39:03,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284556269] [2024-11-14 03:39:03,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:39:03,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-14 03:39:03,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:39:03,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-14 03:39:03,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-11-14 03:39:03,548 INFO L87 Difference]: Start difference. First operand 67 states and 77 transitions. Second operand has 15 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:39:04,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:39:04,126 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2024-11-14 03:39:04,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 03:39:04,127 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2024-11-14 03:39:04,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:39:04,128 INFO L225 Difference]: With dead ends: 67 [2024-11-14 03:39:04,128 INFO L226 Difference]: Without dead ends: 67 [2024-11-14 03:39:04,128 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2024-11-14 03:39:04,130 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 14 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:39:04,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 136 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 03:39:04,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-14 03:39:04,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-11-14 03:39:04,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 48 states have (on average 1.4583333333333333) internal successors, (70), 61 states have internal predecessors, (70), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:39:04,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 76 transitions. [2024-11-14 03:39:04,137 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 76 transitions. Word has length 22 [2024-11-14 03:39:04,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:39:04,139 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 76 transitions. [2024-11-14 03:39:04,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:39:04,140 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 76 transitions. [2024-11-14 03:39:04,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-14 03:39:04,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:39:04,140 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:39:04,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-14 03:39:04,141 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:39:04,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:39:04,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1737400858, now seen corresponding path program 1 times [2024-11-14 03:39:04,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:39:04,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915160585] [2024-11-14 03:39:04,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:39:04,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:39:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:39:04,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:39:04,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:39:04,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915160585] [2024-11-14 03:39:04,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915160585] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:39:04,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861175999] [2024-11-14 03:39:04,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:39:04,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:39:04,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:39:04,424 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:39:04,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 03:39:04,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:39:04,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-14 03:39:04,578 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:39:04,997 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:39:04,997 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 15 treesize of output 15 [2024-11-14 03:39:05,021 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:39:05,021 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 15 treesize of output 15 [2024-11-14 03:39:05,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:39:05,137 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:39:05,375 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-14 03:39:05,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2024-11-14 03:39:05,402 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-11-14 03:39:05,403 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 20 treesize of output 12 [2024-11-14 03:39:05,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:39:05,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861175999] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:39:05,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [714116232] [2024-11-14 03:39:05,649 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2024-11-14 03:39:05,649 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:39:05,650 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:39:05,650 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:39:05,650 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:39:06,277 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 22 for LOIs [2024-11-14 03:39:06,311 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:39:13,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [714116232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:39:13,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:39:13,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [7, 12, 12] total 34 [2024-11-14 03:39:13,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590607407] [2024-11-14 03:39:13,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:39:13,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-14 03:39:13,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:39:13,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-14 03:39:13,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1023, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 03:39:13,666 INFO L87 Difference]: Start difference. First operand 67 states and 76 transitions. Second operand has 18 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:39:17,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:39:17,048 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2024-11-14 03:39:17,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-14 03:39:17,048 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2024-11-14 03:39:17,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:39:17,049 INFO L225 Difference]: With dead ends: 73 [2024-11-14 03:39:17,049 INFO L226 Difference]: Without dead ends: 73 [2024-11-14 03:39:17,050 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=99, Invalid=1023, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 03:39:17,050 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:39:17,051 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-14 03:39:17,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-14 03:39:17,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2024-11-14 03:39:17,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 51 states have (on average 1.4509803921568627) internal successors, (74), 64 states have internal predecessors, (74), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:39:17,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 80 transitions. [2024-11-14 03:39:17,055 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 80 transitions. Word has length 22 [2024-11-14 03:39:17,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:39:17,056 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 80 transitions. [2024-11-14 03:39:17,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:39:17,056 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 80 transitions. [2024-11-14 03:39:17,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-14 03:39:17,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:39:17,057 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:39:17,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-14 03:39:17,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-14 03:39:17,261 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:39:17,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:39:17,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1737402112, now seen corresponding path program 1 times [2024-11-14 03:39:17,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:39:17,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953619212] [2024-11-14 03:39:17,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:39:17,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:39:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:39:17,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:39:17,611 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:39:17,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953619212] [2024-11-14 03:39:17,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953619212] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:39:17,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031008429] [2024-11-14 03:39:17,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:39:17,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:39:17,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:39:17,614 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:39:17,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 03:39:17,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:39:17,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-14 03:39:17,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:39:17,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-14 03:39:17,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:39:17,985 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:39:18,149 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_create_#t~ret4#1.base_28| Int)) (or (= |c_ULTIMATE.start_main_old_#valid#1| (store |c_#valid| |v_ULTIMATE.start_create_#t~ret4#1.base_28| 0)) (not (= (select |c_#valid| |v_ULTIMATE.start_create_#t~ret4#1.base_28|) 0)))) is different from false [2024-11-14 03:39:18,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031008429] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:39:18,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1538578836] [2024-11-14 03:39:18,154 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-14 03:39:18,154 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:39:18,154 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:39:18,155 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:39:18,155 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:39:18,661 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 22 for LOIs [2024-11-14 03:39:18,690 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:39:27,238 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3055#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_old_#valid#1_10| (Array Int Int))) (and (= (select |v_ULTIMATE.start_main_old_#valid#1_10| 0) 0) (not (= |v_ULTIMATE.start_main_old_#valid#1_10| |#valid|)))) (exists ((|v_#memory_$Pointer$.offset_128| (Array Int (Array Int Int))) (|v_#valid_103| (Array Int Int)) (|v_ULTIMATE.start_destroy_~l#1.base_32| Int) (|v_#memory_$Pointer$.base_128| (Array Int (Array Int Int))) (|v_#memory_int_111| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_131| (Array Int (Array Int Int))) (|v_#memory_int_112| (Array Int (Array Int Int))) (|v_#memory_int_113| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_131| (Array Int (Array Int Int))) (|v_#length_84| (Array Int Int))) (and (= |v_#memory_$Pointer$.offset_131| (store |v_#memory_$Pointer$.offset_128| |v_ULTIMATE.start_destroy_~l#1.base_32| (store (store (store (select |v_#memory_$Pointer$.offset_128| |v_ULTIMATE.start_destroy_~l#1.base_32|) 0 0) 8 0) 16 (select (select |v_#memory_$Pointer$.offset_131| |v_ULTIMATE.start_destroy_~l#1.base_32|) 16)))) (<= 0 (+ (select (select |#memory_int| |v_ULTIMATE.start_destroy_~l#1.base_32|) 16) 2147483648)) (= (select |v_#valid_103| |v_ULTIMATE.start_destroy_~l#1.base_32|) 0) (= |#memory_$Pointer$.base| (store |v_#memory_$Pointer$.base_131| |v_ULTIMATE.start_destroy_~l#1.base_32| (store (select |v_#memory_$Pointer$.base_131| |v_ULTIMATE.start_destroy_~l#1.base_32|) 16 (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_destroy_~l#1.base_32|) 16)))) (= (store |v_#memory_int_112| |v_ULTIMATE.start_destroy_~l#1.base_32| (store (select |v_#memory_int_112| |v_ULTIMATE.start_destroy_~l#1.base_32|) 8 (select (select |v_#memory_int_113| |v_ULTIMATE.start_destroy_~l#1.base_32|) 8))) |v_#memory_int_113|) (= |#memory_int| (store |v_#memory_int_113| |v_ULTIMATE.start_destroy_~l#1.base_32| (store (select |v_#memory_int_113| |v_ULTIMATE.start_destroy_~l#1.base_32|) 16 (select (select |#memory_int| |v_ULTIMATE.start_destroy_~l#1.base_32|) 16)))) (<= (select (select |#memory_int| |v_ULTIMATE.start_destroy_~l#1.base_32|) 16) 2147483647) (= (store |v_#memory_$Pointer$.base_128| |v_ULTIMATE.start_destroy_~l#1.base_32| (store (store (store (select |v_#memory_$Pointer$.base_128| |v_ULTIMATE.start_destroy_~l#1.base_32|) 0 0) 8 0) 16 (select (select |v_#memory_$Pointer$.base_131| |v_ULTIMATE.start_destroy_~l#1.base_32|) 16))) |v_#memory_$Pointer$.base_131|) (= |#length| (store |v_#length_84| |v_ULTIMATE.start_destroy_~l#1.base_32| 20)) (= |#valid| (store |v_#valid_103| |v_ULTIMATE.start_destroy_~l#1.base_32| 0)) (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_131| |v_ULTIMATE.start_destroy_~l#1.base_32| (store (select |v_#memory_$Pointer$.offset_131| |v_ULTIMATE.start_destroy_~l#1.base_32|) 16 (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_destroy_~l#1.base_32|) 16)))) (not (= |v_ULTIMATE.start_destroy_~l#1.base_32| 0)) (<= (+ |v_ULTIMATE.start_destroy_~l#1.base_32| 1) |#StackHeapBarrier|) (= (store |v_#memory_int_111| |v_ULTIMATE.start_destroy_~l#1.base_32| (store (select |v_#memory_int_111| |v_ULTIMATE.start_destroy_~l#1.base_32|) 0 (select (select |v_#memory_int_112| |v_ULTIMATE.start_destroy_~l#1.base_32|) 0))) |v_#memory_int_112|))) (= |ULTIMATE.start_main_#res#1| 0))' at error location [2024-11-14 03:39:27,239 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:39:27,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 03:39:27,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 9 [2024-11-14 03:39:27,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873502082] [2024-11-14 03:39:27,239 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 03:39:27,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 03:39:27,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:39:27,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 03:39:27,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=742, Unknown=2, NotChecked=54, Total=870 [2024-11-14 03:39:27,241 INFO L87 Difference]: Start difference. First operand 70 states and 80 transitions. Second operand has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:39:27,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:39:27,783 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2024-11-14 03:39:27,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 03:39:27,783 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2024-11-14 03:39:27,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:39:27,784 INFO L225 Difference]: With dead ends: 80 [2024-11-14 03:39:27,784 INFO L226 Difference]: Without dead ends: 79 [2024-11-14 03:39:27,785 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=72, Invalid=742, Unknown=2, NotChecked=54, Total=870 [2024-11-14 03:39:27,785 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 5 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:39:27,786 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 157 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 03:39:27,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-14 03:39:27,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2024-11-14 03:39:27,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 56 states have (on average 1.4107142857142858) internal successors, (79), 69 states have internal predecessors, (79), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:39:27,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2024-11-14 03:39:27,790 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 22 [2024-11-14 03:39:27,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:39:27,790 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2024-11-14 03:39:27,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:39:27,790 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2024-11-14 03:39:27,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-14 03:39:27,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:39:27,791 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:39:27,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-14 03:39:27,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:39:27,992 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:39:27,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:39:27,992 INFO L85 PathProgramCache]: Analyzing trace with hash -150727091, now seen corresponding path program 2 times [2024-11-14 03:39:27,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:39:27,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942789837] [2024-11-14 03:39:27,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:39:27,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:39:28,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:39:28,258 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:39:28,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:39:28,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942789837] [2024-11-14 03:39:28,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942789837] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:39:28,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463039051] [2024-11-14 03:39:28,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:39:28,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:39:28,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:39:28,263 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:39:28,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 03:39:28,456 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 03:39:28,456 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:39:28,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-14 03:39:28,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:39:28,682 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 [2024-11-14 03:39:28,994 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:39:28,995 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 15 treesize of output 15 [2024-11-14 03:39:29,199 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:39:29,199 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:39:29,836 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-14 03:39:29,836 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 66 treesize of output 61 [2024-11-14 03:39:30,084 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:39:30,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463039051] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:39:30,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2095467934] [2024-11-14 03:39:30,087 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-14 03:39:30,087 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:39:30,087 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:39:30,088 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:39:30,088 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:39:30,590 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 22 for LOIs [2024-11-14 03:39:30,621 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:39:39,821 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3407#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_old_#valid#1_11| (Array Int Int))) (and (= (select |v_ULTIMATE.start_main_old_#valid#1_11| 0) 0) (not (= |v_ULTIMATE.start_main_old_#valid#1_11| |#valid|)))) (exists ((|v_#memory_int_129| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_148| (Array Int (Array Int Int))) (|v_ULTIMATE.start_destroy_~l#1.base_38| Int) (|v_#length_91| (Array Int Int)) (|v_#valid_114| (Array Int Int)) (|v_#memory_int_128| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_149| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_146| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_145| (Array Int (Array Int Int))) (|v_#memory_int_130| (Array Int (Array Int Int)))) (and (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_148| |v_ULTIMATE.start_destroy_~l#1.base_38| (store (select |v_#memory_$Pointer$.offset_148| |v_ULTIMATE.start_destroy_~l#1.base_38|) 16 (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_destroy_~l#1.base_38|) 16)))) (= (store |v_#memory_int_128| |v_ULTIMATE.start_destroy_~l#1.base_38| (store (select |v_#memory_int_128| |v_ULTIMATE.start_destroy_~l#1.base_38|) 0 (select (select |v_#memory_int_129| |v_ULTIMATE.start_destroy_~l#1.base_38|) 0))) |v_#memory_int_129|) (= |#length| (store |v_#length_91| |v_ULTIMATE.start_destroy_~l#1.base_38| 20)) (= (store |v_#memory_int_129| |v_ULTIMATE.start_destroy_~l#1.base_38| (store (select |v_#memory_int_129| |v_ULTIMATE.start_destroy_~l#1.base_38|) 8 (select (select |v_#memory_int_130| |v_ULTIMATE.start_destroy_~l#1.base_38|) 8))) |v_#memory_int_130|) (= |v_#memory_$Pointer$.base_149| (store |v_#memory_$Pointer$.base_146| |v_ULTIMATE.start_destroy_~l#1.base_38| (store (store (store (select |v_#memory_$Pointer$.base_146| |v_ULTIMATE.start_destroy_~l#1.base_38|) 0 0) 8 0) 16 (select (select |v_#memory_$Pointer$.base_149| |v_ULTIMATE.start_destroy_~l#1.base_38|) 16)))) (= |#memory_int| (store |v_#memory_int_130| |v_ULTIMATE.start_destroy_~l#1.base_38| (store (select |v_#memory_int_130| |v_ULTIMATE.start_destroy_~l#1.base_38|) 16 (select (select |#memory_int| |v_ULTIMATE.start_destroy_~l#1.base_38|) 16)))) (<= (+ |v_ULTIMATE.start_destroy_~l#1.base_38| 1) |#StackHeapBarrier|) (= (store |v_#valid_114| |v_ULTIMATE.start_destroy_~l#1.base_38| 0) |#valid|) (<= (select (select |#memory_int| |v_ULTIMATE.start_destroy_~l#1.base_38|) 16) 2147483647) (not (= |v_ULTIMATE.start_destroy_~l#1.base_38| 0)) (= (store |v_#memory_$Pointer$.offset_145| |v_ULTIMATE.start_destroy_~l#1.base_38| (store (store (store (select |v_#memory_$Pointer$.offset_145| |v_ULTIMATE.start_destroy_~l#1.base_38|) 0 0) 8 0) 16 (select (select |v_#memory_$Pointer$.offset_148| |v_ULTIMATE.start_destroy_~l#1.base_38|) 16))) |v_#memory_$Pointer$.offset_148|) (= (store |v_#memory_$Pointer$.base_149| |v_ULTIMATE.start_destroy_~l#1.base_38| (store (select |v_#memory_$Pointer$.base_149| |v_ULTIMATE.start_destroy_~l#1.base_38|) 16 (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_destroy_~l#1.base_38|) 16))) |#memory_$Pointer$.base|) (= 0 (select |v_#valid_114| |v_ULTIMATE.start_destroy_~l#1.base_38|)) (<= 0 (+ (select (select |#memory_int| |v_ULTIMATE.start_destroy_~l#1.base_38|) 16) 2147483648)))) (= |ULTIMATE.start_main_#res#1| 0))' at error location [2024-11-14 03:39:39,821 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:39:39,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:39:39,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15, 15] total 23 [2024-11-14 03:39:39,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261082154] [2024-11-14 03:39:39,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:39:39,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-14 03:39:39,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:39:39,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-14 03:39:39,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1509, Unknown=1, NotChecked=0, Total=1640 [2024-11-14 03:39:39,823 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 03:39:41,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:39:41,659 INFO L93 Difference]: Finished difference Result 100 states and 119 transitions. [2024-11-14 03:39:41,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-14 03:39:41,660 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2024-11-14 03:39:41,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:39:41,661 INFO L225 Difference]: With dead ends: 100 [2024-11-14 03:39:41,661 INFO L226 Difference]: Without dead ends: 92 [2024-11-14 03:39:41,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=176, Invalid=2079, Unknown=1, NotChecked=0, Total=2256 [2024-11-14 03:39:41,663 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 42 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:39:41,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 307 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-14 03:39:41,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-14 03:39:41,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 87. [2024-11-14 03:39:41,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 68 states have (on average 1.4852941176470589) internal successors, (101), 81 states have internal predecessors, (101), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:39:41,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 107 transitions. [2024-11-14 03:39:41,669 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 107 transitions. Word has length 27 [2024-11-14 03:39:41,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:39:41,669 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 107 transitions. [2024-11-14 03:39:41,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 03:39:41,669 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 107 transitions. [2024-11-14 03:39:41,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-14 03:39:41,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:39:41,670 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:39:41,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-14 03:39:41,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:39:41,871 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:39:41,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:39:41,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1411278043, now seen corresponding path program 1 times [2024-11-14 03:39:41,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:39:41,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524517781] [2024-11-14 03:39:41,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:39:41,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:39:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:39:42,057 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 03:39:42,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:39:42,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524517781] [2024-11-14 03:39:42,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524517781] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:39:42,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690328294] [2024-11-14 03:39:42,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:39:42,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:39:42,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:39:42,062 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:39:42,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-14 03:39:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:39:42,257 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-14 03:39:42,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:39:42,337 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 03:39:42,338 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:39:42,411 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-14 03:39:42,411 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 [2024-11-14 03:39:42,477 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 03:39:42,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690328294] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:39:42,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [145150202] [2024-11-14 03:39:42,484 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2024-11-14 03:39:42,484 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:39:42,484 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:39:42,485 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:39:42,486 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:39:50,680 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 24 for LOIs [2024-11-14 03:39:50,736 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:40:02,503 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3794#(and (not (= (select |#valid| |ULTIMATE.start_loop_~l#1.base|) 1)) (= |ULTIMATE.start_main_~l~0#1.offset| |ULTIMATE.start_loop_~l#1.offset|) (exists ((|v_ULTIMATE.start_create_#t~mem9#1.base_26| Int) (|v_#memory_int_165| (Array Int (Array Int Int))) (|v_ULTIMATE.start_create_#t~mem9#1.offset_25| Int) (|v_#memory_$Pointer$.base_179| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_178| (Array Int (Array Int Int)))) (and (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_178| |v_ULTIMATE.start_create_#t~mem9#1.base_26| (store (select |v_#memory_$Pointer$.offset_178| |v_ULTIMATE.start_create_#t~mem9#1.base_26|) (+ 16 |v_ULTIMATE.start_create_#t~mem9#1.offset_25|) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_#t~mem9#1.base_26|) (+ 16 |v_ULTIMATE.start_create_#t~mem9#1.offset_25|))))) (<= 0 (+ 16 |v_ULTIMATE.start_create_#t~mem9#1.offset_25|)) (= (select |#valid| |v_ULTIMATE.start_create_#t~mem9#1.base_26|) 1) (= |#memory_int| (store |v_#memory_int_165| |v_ULTIMATE.start_create_#t~mem9#1.base_26| (store (select |v_#memory_int_165| |v_ULTIMATE.start_create_#t~mem9#1.base_26|) (+ 16 |v_ULTIMATE.start_create_#t~mem9#1.offset_25|) (select (select |#memory_int| |v_ULTIMATE.start_create_#t~mem9#1.base_26|) (+ 16 |v_ULTIMATE.start_create_#t~mem9#1.offset_25|))))) (<= (+ 20 |v_ULTIMATE.start_create_#t~mem9#1.offset_25|) (select |#length| |v_ULTIMATE.start_create_#t~mem9#1.base_26|)) (= (store |v_#memory_$Pointer$.base_179| |v_ULTIMATE.start_create_#t~mem9#1.base_26| (store (select |v_#memory_$Pointer$.base_179| |v_ULTIMATE.start_create_#t~mem9#1.base_26|) (+ 16 |v_ULTIMATE.start_create_#t~mem9#1.offset_25|) (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_#t~mem9#1.base_26|) (+ 16 |v_ULTIMATE.start_create_#t~mem9#1.offset_25|)))) |#memory_$Pointer$.base|))) (= |ULTIMATE.start_loop_~l#1.base| |ULTIMATE.start_main_~l~0#1.base|) (or (not (= |ULTIMATE.start_loop_~l#1.base| 0)) (not (= |ULTIMATE.start_loop_~node~0#1.offset| 0))) (= |ULTIMATE.start_loop_~node~0#1.offset| |ULTIMATE.start_loop_~l#1.offset|) (exists ((|v_ULTIMATE.start_create_~now~0#1.base_56| Int)) (and (= (select |#valid| |v_ULTIMATE.start_create_~now~0#1.base_56|) 1) (<= 8 (select |#length| |v_ULTIMATE.start_create_~now~0#1.base_56|)))))' at error location [2024-11-14 03:40:02,503 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:40:02,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:40:02,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2024-11-14 03:40:02,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69304018] [2024-11-14 03:40:02,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:40:02,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 03:40:02,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:40:02,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 03:40:02,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=479, Unknown=17, NotChecked=0, Total=552 [2024-11-14 03:40:02,505 INFO L87 Difference]: Start difference. First operand 87 states and 107 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:40:02,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:40:02,705 INFO L93 Difference]: Finished difference Result 93 states and 116 transitions. [2024-11-14 03:40:02,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:40:02,706 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2024-11-14 03:40:02,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:40:02,707 INFO L225 Difference]: With dead ends: 93 [2024-11-14 03:40:02,707 INFO L226 Difference]: Without dead ends: 93 [2024-11-14 03:40:02,707 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=56, Invalid=479, Unknown=17, NotChecked=0, Total=552 [2024-11-14 03:40:02,708 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 6 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:40:02,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 83 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:40:02,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-14 03:40:02,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2024-11-14 03:40:02,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 73 states have (on average 1.4794520547945205) internal successors, (108), 86 states have internal predecessors, (108), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:40:02,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 114 transitions. [2024-11-14 03:40:02,713 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 114 transitions. Word has length 28 [2024-11-14 03:40:02,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:40:02,714 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 114 transitions. [2024-11-14 03:40:02,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:40:02,714 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 114 transitions. [2024-11-14 03:40:02,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-14 03:40:02,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:40:02,715 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:40:02,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-14 03:40:02,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:40:02,920 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:40:02,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:40:02,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1411278042, now seen corresponding path program 1 times [2024-11-14 03:40:02,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:40:02,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272676383] [2024-11-14 03:40:02,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:40:02,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:40:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:40:03,385 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:40:03,386 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:40:03,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272676383] [2024-11-14 03:40:03,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272676383] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:40:03,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088858359] [2024-11-14 03:40:03,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:40:03,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:40:03,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:40:03,389 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:40:03,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-14 03:40:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:40:03,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-14 03:40:03,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:40:03,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-14 03:40:04,290 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 03:40:04,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-14 03:40:04,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-14 03:40:04,414 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 [2024-11-14 03:40:04,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-14 03:40:04,748 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:40:04,748 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:40:05,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088858359] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:40:05,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [653856607] [2024-11-14 03:40:05,321 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2024-11-14 03:40:05,322 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:40:05,322 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:40:05,322 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:40:05,322 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:40:13,043 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 24 for LOIs [2024-11-14 03:40:13,089 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:40:30,390 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4139#(and (or (< (select |#length| |ULTIMATE.start_loop_~l#1.base|) (+ 8 |ULTIMATE.start_loop_~l#1.offset|)) (< |ULTIMATE.start_loop_~l#1.offset| 0)) (= |ULTIMATE.start_main_~l~0#1.offset| |ULTIMATE.start_loop_~l#1.offset|) (= |ULTIMATE.start_loop_~l#1.base| |ULTIMATE.start_main_~l~0#1.base|) (exists ((|v_ULTIMATE.start_create_~now~0#1.base_61| Int)) (and (= (select |#valid| |v_ULTIMATE.start_create_~now~0#1.base_61|) 1) (<= 8 (select |#length| |v_ULTIMATE.start_create_~now~0#1.base_61|)))) (exists ((|v_#memory_$Pointer$.offset_204| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_206| (Array Int (Array Int Int))) (|v_ULTIMATE.start_create_#t~mem9#1.offset_29| Int) (|v_ULTIMATE.start_create_#t~mem9#1.base_30| Int) (|v_#memory_int_195| (Array Int (Array Int Int)))) (and (<= (+ 20 |v_ULTIMATE.start_create_#t~mem9#1.offset_29|) (select |#length| |v_ULTIMATE.start_create_#t~mem9#1.base_30|)) (= (select |#valid| |v_ULTIMATE.start_create_#t~mem9#1.base_30|) 1) (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_204| |v_ULTIMATE.start_create_#t~mem9#1.base_30| (store (select |v_#memory_$Pointer$.offset_204| |v_ULTIMATE.start_create_#t~mem9#1.base_30|) (+ 16 |v_ULTIMATE.start_create_#t~mem9#1.offset_29|) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_#t~mem9#1.base_30|) (+ 16 |v_ULTIMATE.start_create_#t~mem9#1.offset_29|))))) (<= 0 (+ 16 |v_ULTIMATE.start_create_#t~mem9#1.offset_29|)) (= |#memory_int| (store |v_#memory_int_195| |v_ULTIMATE.start_create_#t~mem9#1.base_30| (store (select |v_#memory_int_195| |v_ULTIMATE.start_create_#t~mem9#1.base_30|) (+ 16 |v_ULTIMATE.start_create_#t~mem9#1.offset_29|) (select (select |#memory_int| |v_ULTIMATE.start_create_#t~mem9#1.base_30|) (+ 16 |v_ULTIMATE.start_create_#t~mem9#1.offset_29|))))) (= |#memory_$Pointer$.base| (store |v_#memory_$Pointer$.base_206| |v_ULTIMATE.start_create_#t~mem9#1.base_30| (store (select |v_#memory_$Pointer$.base_206| |v_ULTIMATE.start_create_#t~mem9#1.base_30|) (+ 16 |v_ULTIMATE.start_create_#t~mem9#1.offset_29|) (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_#t~mem9#1.base_30|) (+ 16 |v_ULTIMATE.start_create_#t~mem9#1.offset_29|))))))) (or (not (= |ULTIMATE.start_loop_~l#1.base| 0)) (not (= |ULTIMATE.start_loop_~l#1.offset| 0))))' at error location [2024-11-14 03:40:30,391 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:40:30,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 03:40:30,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13] total 20 [2024-11-14 03:40:30,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957347935] [2024-11-14 03:40:30,391 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 03:40:30,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-14 03:40:30,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:40:30,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-14 03:40:30,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1647, Unknown=19, NotChecked=0, Total=1806 [2024-11-14 03:40:30,392 INFO L87 Difference]: Start difference. First operand 92 states and 114 transitions. Second operand has 21 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 03:40:32,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:40:32,017 INFO L93 Difference]: Finished difference Result 92 states and 112 transitions. [2024-11-14 03:40:32,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 03:40:32,017 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 28 [2024-11-14 03:40:32,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:40:32,018 INFO L225 Difference]: With dead ends: 92 [2024-11-14 03:40:32,018 INFO L226 Difference]: Without dead ends: 92 [2024-11-14 03:40:32,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=209, Invalid=2220, Unknown=21, NotChecked=0, Total=2450 [2024-11-14 03:40:32,021 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 27 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 03:40:32,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 256 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 03:40:32,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-14 03:40:32,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-11-14 03:40:32,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 73 states have (on average 1.452054794520548) internal successors, (106), 86 states have internal predecessors, (106), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:40:32,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 112 transitions. [2024-11-14 03:40:32,028 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 112 transitions. Word has length 28 [2024-11-14 03:40:32,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:40:32,029 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 112 transitions. [2024-11-14 03:40:32,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 03:40:32,029 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 112 transitions. [2024-11-14 03:40:32,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-14 03:40:32,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:40:32,030 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:40:32,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-14 03:40:32,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-14 03:40:32,230 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:40:32,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:40:32,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1443206484, now seen corresponding path program 3 times [2024-11-14 03:40:32,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:40:32,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759094943] [2024-11-14 03:40:32,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:40:32,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:40:32,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:40:32,851 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 03:40:32,851 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:40:32,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759094943] [2024-11-14 03:40:32,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759094943] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:40:32,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468937546] [2024-11-14 03:40:32,851 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 03:40:32,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:40:32,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:40:32,854 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:40:32,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-14 03:40:33,024 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 03:40:33,024 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:40:33,026 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-14 03:40:33,032 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:40:33,078 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 [2024-11-14 03:40:33,092 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 [2024-11-14 03:40:33,161 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:40:33,161 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 1 case distinctions, treesize of input 30 treesize of output 21 [2024-11-14 03:40:33,439 INFO L349 Elim1Store]: treesize reduction 40, result has 40.3 percent of original size [2024-11-14 03:40:33,440 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 3 case distinctions, treesize of input 34 treesize of output 33 [2024-11-14 03:40:33,974 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:40:33,975 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 22 treesize of output 26 [2024-11-14 03:40:34,182 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:40:34,182 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:40:35,453 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 18 [2024-11-14 03:40:35,460 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 03:40:35,461 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 03:40:35,465 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 14 treesize of output 12 [2024-11-14 03:40:35,511 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:40:35,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468937546] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:40:35,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [503730111] [2024-11-14 03:40:35,513 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-14 03:40:35,513 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:40:35,513 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:40:35,513 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:40:35,513 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:40:36,011 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 22 for LOIs [2024-11-14 03:40:36,032 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:40:46,428 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4557#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_#memory_int_213| (Array Int (Array Int Int))) (|v_ULTIMATE.start_destroy_~l#1.base_44| Int) (|v_#valid_146| (Array Int Int)) (|v_#memory_$Pointer$.base_228| (Array Int (Array Int Int))) (|v_#memory_int_211| (Array Int (Array Int Int))) (|v_#memory_int_212| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_220| (Array Int (Array Int Int))) (|v_#length_121| (Array Int Int)) (|v_#memory_$Pointer$.offset_223| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_231| (Array Int (Array Int Int)))) (and (= (store |v_#memory_$Pointer$.offset_220| |v_ULTIMATE.start_destroy_~l#1.base_44| (store (store (store (select |v_#memory_$Pointer$.offset_220| |v_ULTIMATE.start_destroy_~l#1.base_44|) 0 0) 8 0) 16 (select (select |v_#memory_$Pointer$.offset_223| |v_ULTIMATE.start_destroy_~l#1.base_44|) 16))) |v_#memory_$Pointer$.offset_223|) (<= (select (select |#memory_int| |v_ULTIMATE.start_destroy_~l#1.base_44|) 16) 2147483647) (= (store |v_#memory_$Pointer$.base_228| |v_ULTIMATE.start_destroy_~l#1.base_44| (store (store (store (select |v_#memory_$Pointer$.base_228| |v_ULTIMATE.start_destroy_~l#1.base_44|) 0 0) 8 0) 16 (select (select |v_#memory_$Pointer$.base_231| |v_ULTIMATE.start_destroy_~l#1.base_44|) 16))) |v_#memory_$Pointer$.base_231|) (= (store |v_#memory_int_211| |v_ULTIMATE.start_destroy_~l#1.base_44| (store (select |v_#memory_int_211| |v_ULTIMATE.start_destroy_~l#1.base_44|) 0 (select (select |v_#memory_int_212| |v_ULTIMATE.start_destroy_~l#1.base_44|) 0))) |v_#memory_int_212|) (= |#length| (store |v_#length_121| |v_ULTIMATE.start_destroy_~l#1.base_44| 20)) (<= 0 (+ (select (select |#memory_int| |v_ULTIMATE.start_destroy_~l#1.base_44|) 16) 2147483648)) (= |#memory_$Pointer$.base| (store |v_#memory_$Pointer$.base_231| |v_ULTIMATE.start_destroy_~l#1.base_44| (store (select |v_#memory_$Pointer$.base_231| |v_ULTIMATE.start_destroy_~l#1.base_44|) 16 (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_destroy_~l#1.base_44|) 16)))) (= |#memory_int| (store |v_#memory_int_213| |v_ULTIMATE.start_destroy_~l#1.base_44| (store (select |v_#memory_int_213| |v_ULTIMATE.start_destroy_~l#1.base_44|) 16 (select (select |#memory_int| |v_ULTIMATE.start_destroy_~l#1.base_44|) 16)))) (= (store |v_#valid_146| |v_ULTIMATE.start_destroy_~l#1.base_44| 0) |#valid|) (= 0 (select |v_#valid_146| |v_ULTIMATE.start_destroy_~l#1.base_44|)) (<= (+ |v_ULTIMATE.start_destroy_~l#1.base_44| 1) |#StackHeapBarrier|) (not (= |v_ULTIMATE.start_destroy_~l#1.base_44| 0)) (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_223| |v_ULTIMATE.start_destroy_~l#1.base_44| (store (select |v_#memory_$Pointer$.offset_223| |v_ULTIMATE.start_destroy_~l#1.base_44|) 16 (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_destroy_~l#1.base_44|) 16)))) (= (store |v_#memory_int_212| |v_ULTIMATE.start_destroy_~l#1.base_44| (store (select |v_#memory_int_212| |v_ULTIMATE.start_destroy_~l#1.base_44|) 8 (select (select |v_#memory_int_213| |v_ULTIMATE.start_destroy_~l#1.base_44|) 8))) |v_#memory_int_213|))) (exists ((|v_ULTIMATE.start_main_old_#valid#1_12| (Array Int Int))) (and (not (= |v_ULTIMATE.start_main_old_#valid#1_12| |#valid|)) (= (select |v_ULTIMATE.start_main_old_#valid#1_12| 0) 0))) (= |ULTIMATE.start_main_#res#1| 0))' at error location [2024-11-14 03:40:46,428 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:40:46,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:40:46,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 17] total 34 [2024-11-14 03:40:46,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584939293] [2024-11-14 03:40:46,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:40:46,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 03:40:46,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:40:46,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 03:40:46,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=2449, Unknown=1, NotChecked=0, Total=2652 [2024-11-14 03:40:46,430 INFO L87 Difference]: Start difference. First operand 92 states and 112 transitions. Second operand has 34 states, 31 states have (on average 1.935483870967742) internal successors, (60), 31 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 03:40:48,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:40:48,703 INFO L93 Difference]: Finished difference Result 89 states and 107 transitions. [2024-11-14 03:40:48,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-14 03:40:48,704 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 31 states have (on average 1.935483870967742) internal successors, (60), 31 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-11-14 03:40:48,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:40:48,705 INFO L225 Difference]: With dead ends: 89 [2024-11-14 03:40:48,705 INFO L226 Difference]: Without dead ends: 75 [2024-11-14 03:40:48,706 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 846 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=288, Invalid=3617, Unknown=1, NotChecked=0, Total=3906 [2024-11-14 03:40:48,707 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 10 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:40:48,707 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 420 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-14 03:40:48,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-14 03:40:48,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-14 03:40:48,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 56 states have (on average 1.5357142857142858) internal successors, (86), 69 states have internal predecessors, (86), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:40:48,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2024-11-14 03:40:48,711 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 29 [2024-11-14 03:40:48,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:40:48,712 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2024-11-14 03:40:48,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 31 states have (on average 1.935483870967742) internal successors, (60), 31 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 03:40:48,712 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2024-11-14 03:40:48,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-14 03:40:48,712 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:40:48,713 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:40:48,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-14 03:40:48,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-14 03:40:48,913 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:40:48,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:40:48,914 INFO L85 PathProgramCache]: Analyzing trace with hash 971511358, now seen corresponding path program 1 times [2024-11-14 03:40:48,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:40:48,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337003434] [2024-11-14 03:40:48,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:40:48,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:40:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:40:50,180 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:40:50,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:40:50,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337003434] [2024-11-14 03:40:50,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337003434] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:40:50,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541196057] [2024-11-14 03:40:50,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:40:50,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:40:50,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:40:50,183 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:40:50,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-14 03:40:50,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:40:50,365 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-14 03:40:50,367 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:40:51,006 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 03:40:51,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-14 03:40:51,142 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 [2024-11-14 03:40:51,163 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 [2024-11-14 03:40:51,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-14 03:40:51,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:40:51,454 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 29 [2024-11-14 03:40:51,821 INFO L349 Elim1Store]: treesize reduction 27, result has 15.6 percent of original size [2024-11-14 03:40:51,821 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 40 [2024-11-14 03:40:51,837 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 [2024-11-14 03:40:52,141 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 [2024-11-14 03:40:52,149 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:40:52,149 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:40:52,642 INFO L349 Elim1Store]: treesize reduction 5, result has 87.2 percent of original size [2024-11-14 03:40:52,642 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 43 treesize of output 42 [2024-11-14 03:40:53,077 INFO L349 Elim1Store]: treesize reduction 15, result has 64.3 percent of original size [2024-11-14 03:40:53,078 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 2 case distinctions, treesize of input 184 treesize of output 178 [2024-11-14 03:40:53,150 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:40:53,151 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 125 treesize of output 141 [2024-11-14 03:40:53,162 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 95 treesize of output 89 [2024-11-14 03:40:53,275 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 [2024-11-14 03:40:53,357 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:40:53,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 25 [2024-11-14 03:40:53,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541196057] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:40:53,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1633779292] [2024-11-14 03:40:53,752 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2024-11-14 03:40:53,752 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:40:53,753 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:40:53,753 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:40:53,753 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:41:01,284 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 24 for LOIs [2024-11-14 03:41:01,319 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:41:40,075 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4930#(exists ((|v_ULTIMATE.start_loop_~node~0#1.base_68| Int)) (and (or (not (= |ULTIMATE.start_loop_~node~0#1.offset| 0)) (not (= |v_ULTIMATE.start_loop_~node~0#1.base_68| 0))) (not (= (select |#valid| |v_ULTIMATE.start_loop_~node~0#1.base_68|) 1))))' at error location [2024-11-14 03:41:40,075 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:41:40,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 03:41:40,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2024-11-14 03:41:40,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942661905] [2024-11-14 03:41:40,076 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 03:41:40,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-14 03:41:40,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:41:40,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-14 03:41:40,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=2962, Unknown=36, NotChecked=0, Total=3192 [2024-11-14 03:41:40,078 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand has 32 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 27 states have internal predecessors, (49), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 03:41:42,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:41:42,336 INFO L93 Difference]: Finished difference Result 78 states and 98 transitions. [2024-11-14 03:41:42,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-14 03:41:42,336 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 27 states have internal predecessors, (49), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 30 [2024-11-14 03:41:42,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:41:42,337 INFO L225 Difference]: With dead ends: 78 [2024-11-14 03:41:42,337 INFO L226 Difference]: Without dead ends: 78 [2024-11-14 03:41:42,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 931 ImplicationChecksByTransitivity, 42.7s TimeCoverageRelationStatistics Valid=290, Invalid=3829, Unknown=41, NotChecked=0, Total=4160 [2024-11-14 03:41:42,340 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 13 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:41:42,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 375 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-14 03:41:42,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-14 03:41:42,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2024-11-14 03:41:42,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 58 states have (on average 1.5517241379310345) internal successors, (90), 71 states have internal predecessors, (90), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:41:42,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 96 transitions. [2024-11-14 03:41:42,346 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 96 transitions. Word has length 30 [2024-11-14 03:41:42,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:41:42,346 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 96 transitions. [2024-11-14 03:41:42,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 27 states have internal predecessors, (49), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 03:41:42,347 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 96 transitions. [2024-11-14 03:41:42,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-14 03:41:42,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:41:42,347 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:41:42,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-14 03:41:42,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:41:42,548 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:41:42,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:41:42,548 INFO L85 PathProgramCache]: Analyzing trace with hash 971511359, now seen corresponding path program 1 times [2024-11-14 03:41:42,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:41:42,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628553599] [2024-11-14 03:41:42,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:41:42,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:41:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:41:43,981 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:41:43,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:41:43,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628553599] [2024-11-14 03:41:43,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628553599] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:41:43,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259359750] [2024-11-14 03:41:43,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:41:43,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:41:43,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:41:43,985 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:41:43,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-14 03:41:44,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:41:44,186 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-14 03:41:44,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:41:44,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-14 03:41:44,861 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 03:41:44,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-14 03:41:44,996 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 [2024-11-14 03:41:45,017 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 [2024-11-14 03:41:45,331 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-14 03:41:45,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-14 03:41:45,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-14 03:41:45,511 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-14 03:41:45,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-14 03:41:45,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-14 03:41:45,841 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 [2024-11-14 03:41:45,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 03:41:45,953 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:41:45,953 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:41:47,091 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:41:47,091 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 73 treesize of output 74 [2024-11-14 03:41:47,105 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:41:47,105 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 65 treesize of output 50 [2024-11-14 03:41:47,134 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:41:47,134 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 632 treesize of output 567 [2024-11-14 03:41:47,184 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:41:47,184 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 1831 treesize of output 1742 [2024-11-14 03:41:47,218 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 547 treesize of output 523 [2024-11-14 03:41:47,233 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 523 treesize of output 499 [2024-11-14 03:41:47,246 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 499 treesize of output 491 [2024-11-14 03:41:47,276 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:41:47,276 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 491 treesize of output 447 [2024-11-14 03:41:47,684 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:41:47,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2024-11-14 03:41:47,698 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:41:47,698 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 30 treesize of output 31 [2024-11-14 03:41:47,702 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 03:41:47,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2024-11-14 03:41:47,716 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 03:41:47,720 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 18 treesize of output 10 [2024-11-14 03:41:48,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259359750] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:41:48,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [396402063] [2024-11-14 03:41:48,145 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2024-11-14 03:41:48,145 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:41:48,146 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:41:48,146 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:41:48,146 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:41:55,606 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 24 for LOIs [2024-11-14 03:41:55,641 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:42:08,424 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5119#true' at error location [2024-11-14 03:42:08,424 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:42:08,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 03:42:08,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2024-11-14 03:42:08,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684002264] [2024-11-14 03:42:08,424 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 03:42:08,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-14 03:42:08,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:42:08,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-14 03:42:08,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=2866, Unknown=23, NotChecked=0, Total=3080 [2024-11-14 03:42:08,427 INFO L87 Difference]: Start difference. First operand 77 states and 96 transitions. Second operand has 31 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 26 states have internal predecessors, (51), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 03:42:10,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:42:10,755 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2024-11-14 03:42:10,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-14 03:42:10,756 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 26 states have internal predecessors, (51), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 30 [2024-11-14 03:42:10,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:42:10,756 INFO L225 Difference]: With dead ends: 78 [2024-11-14 03:42:10,756 INFO L226 Difference]: Without dead ends: 78 [2024-11-14 03:42:10,758 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 987 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=292, Invalid=3972, Unknown=26, NotChecked=0, Total=4290 [2024-11-14 03:42:10,758 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 8 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:42:10,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 405 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-14 03:42:10,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-14 03:42:10,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2024-11-14 03:42:10,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 58 states have (on average 1.5344827586206897) internal successors, (89), 71 states have internal predecessors, (89), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:42:10,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 95 transitions. [2024-11-14 03:42:10,763 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 95 transitions. Word has length 30 [2024-11-14 03:42:10,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:42:10,763 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 95 transitions. [2024-11-14 03:42:10,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 26 states have internal predecessors, (51), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 03:42:10,764 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 95 transitions. [2024-11-14 03:42:10,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-14 03:42:10,764 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:42:10,764 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:42:10,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-14 03:42:10,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:42:10,965 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:42:10,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:42:10,965 INFO L85 PathProgramCache]: Analyzing trace with hash 52083469, now seen corresponding path program 1 times [2024-11-14 03:42:10,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:42:10,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103490554] [2024-11-14 03:42:10,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:42:10,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:42:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:42:11,084 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-14 03:42:11,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:42:11,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103490554] [2024-11-14 03:42:11,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103490554] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:42:11,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154267728] [2024-11-14 03:42:11,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:42:11,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:42:11,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:42:11,087 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:42:11,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-14 03:42:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:42:11,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-14 03:42:11,284 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:42:11,704 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 03:42:11,705 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 11 treesize of output 11 [2024-11-14 03:42:11,798 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 15 treesize of output 1 [2024-11-14 03:42:11,823 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 [2024-11-14 03:42:11,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-14 03:42:12,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:42:12,045 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2024-11-14 03:42:12,324 INFO L349 Elim1Store]: treesize reduction 27, result has 15.6 percent of original size [2024-11-14 03:42:12,324 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 39 [2024-11-14 03:42:12,329 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 [2024-11-14 03:42:12,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-14 03:42:12,596 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:42:12,596 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:42:12,870 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1684 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_1684) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|) 0))) is different from false [2024-11-14 03:42:13,199 INFO L349 Elim1Store]: treesize reduction 15, result has 64.3 percent of original size [2024-11-14 03:42:13,200 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 2 case distinctions, treesize of input 112 treesize of output 119 [2024-11-14 03:42:13,244 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:42:13,244 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 132 treesize of output 148 [2024-11-14 03:42:13,254 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 101 treesize of output 95 [2024-11-14 03:42:13,412 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 [2024-11-14 03:42:13,427 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:42:13,427 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 22 treesize of output 26 [2024-11-14 03:42:13,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154267728] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:42:13,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [533195607] [2024-11-14 03:42:13,775 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2024-11-14 03:42:13,775 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:42:13,775 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:42:13,776 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:42:13,776 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:42:20,074 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 24 for LOIs [2024-11-14 03:42:20,138 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:43:05,627 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5644#(exists ((|v_ULTIMATE.start_destroy_~l#1.base_47| Int)) (and (or (not (= |v_ULTIMATE.start_destroy_~l#1.base_47| 0)) (not (= |ULTIMATE.start_destroy_~l#1.offset| 0))) (not (= (select |#valid| |v_ULTIMATE.start_destroy_~l#1.base_47|) 1))))' at error location [2024-11-14 03:43:05,627 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:43:05,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 03:43:05,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 18] total 21 [2024-11-14 03:43:05,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438801578] [2024-11-14 03:43:05,628 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 03:43:05,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-14 03:43:05,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:43:05,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-14 03:43:05,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1986, Unknown=44, NotChecked=90, Total=2256 [2024-11-14 03:43:05,629 INFO L87 Difference]: Start difference. First operand 77 states and 95 transitions. Second operand has 21 states, 19 states have (on average 2.526315789473684) internal successors, (48), 18 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 03:43:07,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:43:07,420 INFO L93 Difference]: Finished difference Result 79 states and 94 transitions. [2024-11-14 03:43:07,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-14 03:43:07,421 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.526315789473684) internal successors, (48), 18 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 31 [2024-11-14 03:43:07,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:43:07,421 INFO L225 Difference]: With dead ends: 79 [2024-11-14 03:43:07,422 INFO L226 Difference]: Without dead ends: 79 [2024-11-14 03:43:07,422 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 47.8s TimeCoverageRelationStatistics Valid=200, Invalid=2619, Unknown=47, NotChecked=104, Total=2970 [2024-11-14 03:43:07,423 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 20 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:43:07,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 297 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 03:43:07,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-14 03:43:07,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2024-11-14 03:43:07,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 58 states have (on average 1.4827586206896552) internal successors, (86), 71 states have internal predecessors, (86), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:43:07,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 92 transitions. [2024-11-14 03:43:07,427 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 92 transitions. Word has length 31 [2024-11-14 03:43:07,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:43:07,427 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 92 transitions. [2024-11-14 03:43:07,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.526315789473684) internal successors, (48), 18 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 03:43:07,428 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 92 transitions. [2024-11-14 03:43:07,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-14 03:43:07,428 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:43:07,428 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:43:07,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-14 03:43:07,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-14 03:43:07,629 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:43:07,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:43:07,629 INFO L85 PathProgramCache]: Analyzing trace with hash -2021813072, now seen corresponding path program 1 times [2024-11-14 03:43:07,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:43:07,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774284476] [2024-11-14 03:43:07,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:43:07,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:43:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:43:08,543 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 03:43:08,543 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:43:08,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774284476] [2024-11-14 03:43:08,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774284476] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:43:08,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279961929] [2024-11-14 03:43:08,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:43:08,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:43:08,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:43:08,547 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:43:08,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-14 03:43:08,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:43:08,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-14 03:43:08,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:43:08,881 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 03:43:08,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-14 03:43:08,940 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 [2024-11-14 03:43:09,086 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-14 03:43:09,086 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 [2024-11-14 03:43:09,206 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-14 03:43:09,206 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 [2024-11-14 03:43:09,220 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 [2024-11-14 03:43:09,251 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_~pi~0.base (select |c_#valid| alloc_and_zero_~pi~0.base))))) is different from true [2024-11-14 03:43:09,319 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-14 03:43:09,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-14 03:43:09,326 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 4 not checked. [2024-11-14 03:43:09,326 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:43:09,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279961929] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:43:09,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2066322228] [2024-11-14 03:43:09,492 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2024-11-14 03:43:09,492 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:43:09,492 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:43:09,492 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:43:09,492 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:43:16,073 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 24 for LOIs [2024-11-14 03:43:16,122 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:43:31,934 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5956#(and (= |ULTIMATE.start_create_#t~ret7#1.offset| 0) (exists ((|v_ULTIMATE.start_create_~now~0#1.base_84| Int)) (not (= (select |#valid| |v_ULTIMATE.start_create_~now~0#1.base_84|) 1))))' at error location [2024-11-14 03:43:31,934 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:43:31,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 03:43:31,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11] total 23 [2024-11-14 03:43:31,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129897925] [2024-11-14 03:43:31,935 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 03:43:31,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-14 03:43:31,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:43:31,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-14 03:43:31,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1473, Unknown=24, NotChecked=78, Total=1722 [2024-11-14 03:43:31,936 INFO L87 Difference]: Start difference. First operand 77 states and 92 transitions. Second operand has 24 states, 19 states have (on average 2.210526315789474) internal successors, (42), 20 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 6 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-14 03:43:33,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:43:33,672 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2024-11-14 03:43:33,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 03:43:33,673 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 19 states have (on average 2.210526315789474) internal successors, (42), 20 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 6 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) Word has length 32 [2024-11-14 03:43:33,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:43:33,674 INFO L225 Difference]: With dead ends: 75 [2024-11-14 03:43:33,674 INFO L226 Difference]: Without dead ends: 75 [2024-11-14 03:43:33,675 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=198, Invalid=1943, Unknown=25, NotChecked=90, Total=2256 [2024-11-14 03:43:33,676 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 8 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:43:33,676 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 228 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 516 Invalid, 0 Unknown, 38 Unchecked, 1.2s Time] [2024-11-14 03:43:33,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-14 03:43:33,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-14 03:43:33,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 58 states have (on average 1.4482758620689655) internal successors, (84), 69 states have internal predecessors, (84), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:43:33,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 90 transitions. [2024-11-14 03:43:33,680 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 90 transitions. Word has length 32 [2024-11-14 03:43:33,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:43:33,680 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 90 transitions. [2024-11-14 03:43:33,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 19 states have (on average 2.210526315789474) internal successors, (42), 20 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 6 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-14 03:43:33,681 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 90 transitions. [2024-11-14 03:43:33,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-14 03:43:33,681 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:43:33,682 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:43:33,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-14 03:43:33,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-14 03:43:33,882 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:43:33,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:43:33,883 INFO L85 PathProgramCache]: Analyzing trace with hash -2021813071, now seen corresponding path program 1 times [2024-11-14 03:43:33,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:43:33,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838415982] [2024-11-14 03:43:33,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:43:33,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:43:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:43:35,326 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:43:35,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:43:35,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838415982] [2024-11-14 03:43:35,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838415982] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:43:35,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388116502] [2024-11-14 03:43:35,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:43:35,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:43:35,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:43:35,329 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:43:35,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-14 03:43:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:43:35,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-14 03:43:35,578 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:43:35,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-14 03:43:35,870 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 03:43:35,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-14 03:43:35,984 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 [2024-11-14 03:43:36,005 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 [2024-11-14 03:43:36,247 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-14 03:43:36,248 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 52 [2024-11-14 03:43:36,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-14 03:43:36,544 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-14 03:43:36,545 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 59 treesize of output 52 [2024-11-14 03:43:36,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-14 03:43:36,585 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 34 treesize of output 18 [2024-11-14 03:43:36,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 03:43:36,828 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= (store |c_old(#length)| alloc_and_zero_~pi~0.base (select |c_#length| alloc_and_zero_~pi~0.base)) |c_#length|))) is different from true [2024-11-14 03:43:36,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:43:36,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-14 03:43:36,899 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 03:43:36,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-14 03:43:36,993 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-11-14 03:43:36,993 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:43:37,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388116502] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:43:37,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1423252959] [2024-11-14 03:43:37,345 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2024-11-14 03:43:37,345 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:43:37,345 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:43:37,345 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:43:37,345 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:43:44,467 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 24 for LOIs [2024-11-14 03:43:44,504 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:44:21,844 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6265#(= |ULTIMATE.start_create_#t~ret7#1.offset| 0)' at error location [2024-11-14 03:44:21,844 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:44:21,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 03:44:21,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 28 [2024-11-14 03:44:21,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030358180] [2024-11-14 03:44:21,845 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 03:44:21,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-14 03:44:21,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:44:21,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-14 03:44:21,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1807, Unknown=18, NotChecked=86, Total=2070 [2024-11-14 03:44:21,847 INFO L87 Difference]: Start difference. First operand 75 states and 90 transitions. Second operand has 29 states, 24 states have (on average 2.0) internal successors, (48), 22 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-14 03:44:24,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:44:24,470 INFO L93 Difference]: Finished difference Result 71 states and 86 transitions. [2024-11-14 03:44:24,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-14 03:44:24,471 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 24 states have (on average 2.0) internal successors, (48), 22 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 32 [2024-11-14 03:44:24,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:44:24,472 INFO L225 Difference]: With dead ends: 71 [2024-11-14 03:44:24,472 INFO L226 Difference]: Without dead ends: 71 [2024-11-14 03:44:24,473 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 40.6s TimeCoverageRelationStatistics Valid=297, Invalid=2869, Unknown=30, NotChecked=110, Total=3306 [2024-11-14 03:44:24,474 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 22 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:44:24,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 237 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 526 Invalid, 0 Unknown, 44 Unchecked, 1.2s Time] [2024-11-14 03:44:24,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-14 03:44:24,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-14 03:44:24,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 58 states have (on average 1.3793103448275863) internal successors, (80), 65 states have internal predecessors, (80), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:44:24,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 86 transitions. [2024-11-14 03:44:24,479 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 86 transitions. Word has length 32 [2024-11-14 03:44:24,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:44:24,480 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 86 transitions. [2024-11-14 03:44:24,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 24 states have (on average 2.0) internal successors, (48), 22 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-14 03:44:24,480 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 86 transitions. [2024-11-14 03:44:24,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-14 03:44:24,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:44:24,481 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:44:24,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-14 03:44:24,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-14 03:44:24,682 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:44:24,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:44:24,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1614556951, now seen corresponding path program 2 times [2024-11-14 03:44:24,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:44:24,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693020845] [2024-11-14 03:44:24,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:44:24,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:44:24,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:44:27,320 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:44:27,321 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:44:27,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693020845] [2024-11-14 03:44:27,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693020845] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:44:27,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126679384] [2024-11-14 03:44:27,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:44:27,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:44:27,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:44:27,323 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:44:27,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-14 03:44:27,776 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 03:44:27,776 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:44:27,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 93 conjuncts are in the unsatisfiable core [2024-11-14 03:44:27,784 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:44:27,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 03:44:28,347 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 [2024-11-14 03:44:28,373 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 [2024-11-14 03:44:28,392 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 [2024-11-14 03:44:28,409 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 [2024-11-14 03:44:28,544 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 [2024-11-14 03:44:28,581 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 [2024-11-14 03:44:28,778 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 03:44:28,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-14 03:44:28,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2024-11-14 03:44:29,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2024-11-14 03:44:29,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:44:29,464 INFO L349 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2024-11-14 03:44:29,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 94 treesize of output 74 [2024-11-14 03:44:29,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:44:29,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 25 [2024-11-14 03:44:30,082 INFO L349 Elim1Store]: treesize reduction 59, result has 18.1 percent of original size [2024-11-14 03:44:30,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 125 treesize of output 92 [2024-11-14 03:44:30,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 25 [2024-11-14 03:44:31,528 INFO L349 Elim1Store]: treesize reduction 24, result has 73.0 percent of original size [2024-11-14 03:44:31,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 121 treesize of output 131 [2024-11-14 03:44:31,800 INFO L349 Elim1Store]: treesize reduction 24, result has 70.4 percent of original size [2024-11-14 03:44:31,801 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 65 treesize of output 101 [2024-11-14 03:44:33,555 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:44:33,555 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:44:34,949 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_#t~mem9#1.base|)) (.cse0 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem9#1.base|)) (.cse1 (+ 16 |c_ULTIMATE.start_create_#t~mem9#1.offset|))) (and (forall ((v_ArrVal_2189 (Array Int Int))) (or (not (= (store .cse0 .cse1 (select v_ArrVal_2189 .cse1)) v_ArrVal_2189)) (forall ((v_ArrVal_2188 Int) (|v_ULTIMATE.start_loop_~node~0#1.offset_76| Int)) (or (< |c_ULTIMATE.start_create_~dll~0#1.offset| |v_ULTIMATE.start_loop_~node~0#1.offset_76|) (< |v_ULTIMATE.start_loop_~node~0#1.offset_76| 0) (forall ((|v_ULTIMATE.start_loop_~node~0#1.offset_75| Int)) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_#t~mem9#1.base| (store .cse3 .cse1 v_ArrVal_2188)))) (or (< |v_ULTIMATE.start_loop_~node~0#1.offset_75| 0) (= (select (select .cse2 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_2189) |c_ULTIMATE.start_create_~dll~0#1.base|) |v_ULTIMATE.start_loop_~node~0#1.offset_76|)) |v_ULTIMATE.start_loop_~node~0#1.offset_75|) 0) (< (select (select .cse2 |c_ULTIMATE.start_create_~dll~0#1.base|) |v_ULTIMATE.start_loop_~node~0#1.offset_76|) |v_ULTIMATE.start_loop_~node~0#1.offset_75|)))))))) (forall ((v_ArrVal_2189 (Array Int Int))) (or (forall ((v_ArrVal_2188 Int) (|v_ULTIMATE.start_loop_~node~0#1.offset_76| Int)) (or (< |c_ULTIMATE.start_create_~dll~0#1.offset| |v_ULTIMATE.start_loop_~node~0#1.offset_76|) (< |v_ULTIMATE.start_loop_~node~0#1.offset_76| 0) (forall ((|v_ULTIMATE.start_loop_~node~0#1.offset_75| Int)) (or (< |v_ULTIMATE.start_loop_~node~0#1.offset_75| 0) (< (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_#t~mem9#1.base| (store .cse3 .cse1 v_ArrVal_2188)) |c_ULTIMATE.start_create_~dll~0#1.base|) |v_ULTIMATE.start_loop_~node~0#1.offset_76|) |v_ULTIMATE.start_loop_~node~0#1.offset_75|) (= (select (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_2189))) (select .cse4 (select (select .cse4 |c_ULTIMATE.start_create_~dll~0#1.base|) |v_ULTIMATE.start_loop_~node~0#1.offset_76|))) |v_ULTIMATE.start_loop_~node~0#1.offset_75|) 0))))) (not (= (store .cse0 .cse1 (select v_ArrVal_2189 .cse1)) v_ArrVal_2189)))))) is different from false [2024-11-14 03:44:35,108 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (let ((.cse0 (select |c_#memory_$Pointer$.base| .cse3)) (.cse4 (select |c_#memory_$Pointer$.offset| .cse3)) (.cse1 (+ 16 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|)))) (and (forall ((v_ArrVal_2189 (Array Int Int))) (or (not (= (store .cse0 .cse1 (select v_ArrVal_2189 .cse1)) v_ArrVal_2189)) (forall ((v_ArrVal_2188 Int) (|v_ULTIMATE.start_loop_~node~0#1.offset_76| Int)) (or (< |c_ULTIMATE.start_create_~dll~0#1.offset| |v_ULTIMATE.start_loop_~node~0#1.offset_76|) (< |v_ULTIMATE.start_loop_~node~0#1.offset_76| 0) (forall ((|v_ULTIMATE.start_loop_~node~0#1.offset_75| Int)) (or (< |v_ULTIMATE.start_loop_~node~0#1.offset_75| 0) (= (select (let ((.cse2 (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_2189))) (select .cse2 (select (select .cse2 |c_ULTIMATE.start_create_~dll~0#1.base|) |v_ULTIMATE.start_loop_~node~0#1.offset_76|))) |v_ULTIMATE.start_loop_~node~0#1.offset_75|) 0) (< (select (select (store |c_#memory_$Pointer$.offset| .cse3 (store .cse4 .cse1 v_ArrVal_2188)) |c_ULTIMATE.start_create_~dll~0#1.base|) |v_ULTIMATE.start_loop_~node~0#1.offset_76|) |v_ULTIMATE.start_loop_~node~0#1.offset_75|))))))) (forall ((v_ArrVal_2189 (Array Int Int))) (or (not (= (store .cse0 .cse1 (select v_ArrVal_2189 .cse1)) v_ArrVal_2189)) (forall ((v_ArrVal_2188 Int) (|v_ULTIMATE.start_loop_~node~0#1.offset_76| Int)) (or (< |c_ULTIMATE.start_create_~dll~0#1.offset| |v_ULTIMATE.start_loop_~node~0#1.offset_76|) (< |v_ULTIMATE.start_loop_~node~0#1.offset_76| 0) (forall ((|v_ULTIMATE.start_loop_~node~0#1.offset_75| Int)) (let ((.cse5 (store |c_#memory_$Pointer$.offset| .cse3 (store .cse4 .cse1 v_ArrVal_2188)))) (or (< |v_ULTIMATE.start_loop_~node~0#1.offset_75| 0) (= (select (select .cse5 (select (select (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_2189) |c_ULTIMATE.start_create_~dll~0#1.base|) |v_ULTIMATE.start_loop_~node~0#1.offset_76|)) |v_ULTIMATE.start_loop_~node~0#1.offset_75|) 0) (< (select (select .cse5 |c_ULTIMATE.start_create_~dll~0#1.base|) |v_ULTIMATE.start_loop_~node~0#1.offset_76|) |v_ULTIMATE.start_loop_~node~0#1.offset_75|))))))))))) is different from false [2024-11-14 03:44:35,313 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse7 (+ |c_ULTIMATE.start_create_#t~mem8#1.offset| 8))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem8#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem8#1.base|) .cse7 |c_ULTIMATE.start_create_~now~0#1.base|)))) (let ((.cse1 (select (select .cse4 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (let ((.cse5 (select .cse4 .cse1)) (.cse6 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_#t~mem8#1.base|))) (and (forall ((v_ArrVal_2186 Int) (v_ArrVal_2189 (Array Int Int))) (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_#t~mem8#1.base| (store .cse6 .cse7 v_ArrVal_2186)))) (let ((.cse2 (+ (select (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) 16))) (or (forall ((v_ArrVal_2188 Int) (|v_ULTIMATE.start_loop_~node~0#1.offset_76| Int)) (or (< |c_ULTIMATE.start_create_~dll~0#1.offset| |v_ULTIMATE.start_loop_~node~0#1.offset_76|) (< |v_ULTIMATE.start_loop_~node~0#1.offset_76| 0) (forall ((|v_ULTIMATE.start_loop_~node~0#1.offset_75| Int)) (or (< |v_ULTIMATE.start_loop_~node~0#1.offset_75| 0) (< (select (select (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 v_ArrVal_2188)) |c_ULTIMATE.start_create_~dll~0#1.base|) |v_ULTIMATE.start_loop_~node~0#1.offset_76|) |v_ULTIMATE.start_loop_~node~0#1.offset_75|) (= (select (let ((.cse3 (store .cse4 .cse1 v_ArrVal_2189))) (select .cse3 (select (select .cse3 |c_ULTIMATE.start_create_~dll~0#1.base|) |v_ULTIMATE.start_loop_~node~0#1.offset_76|))) |v_ULTIMATE.start_loop_~node~0#1.offset_75|) 0))))) (not (= (store .cse5 .cse2 (select v_ArrVal_2189 .cse2)) v_ArrVal_2189)))))) (forall ((v_ArrVal_2186 Int) (v_ArrVal_2189 (Array Int Int))) (let ((.cse9 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_#t~mem8#1.base| (store .cse6 .cse7 v_ArrVal_2186)))) (let ((.cse10 (+ (select (select .cse9 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) 16))) (or (forall ((v_ArrVal_2188 Int) (|v_ULTIMATE.start_loop_~node~0#1.offset_76| Int)) (or (< |c_ULTIMATE.start_create_~dll~0#1.offset| |v_ULTIMATE.start_loop_~node~0#1.offset_76|) (< |v_ULTIMATE.start_loop_~node~0#1.offset_76| 0) (forall ((|v_ULTIMATE.start_loop_~node~0#1.offset_75| Int)) (let ((.cse8 (store .cse9 .cse1 (store (select .cse9 .cse1) .cse10 v_ArrVal_2188)))) (or (= (select (select .cse8 (select (select (store .cse4 .cse1 v_ArrVal_2189) |c_ULTIMATE.start_create_~dll~0#1.base|) |v_ULTIMATE.start_loop_~node~0#1.offset_76|)) |v_ULTIMATE.start_loop_~node~0#1.offset_75|) 0) (< |v_ULTIMATE.start_loop_~node~0#1.offset_75| 0) (< (select (select .cse8 |c_ULTIMATE.start_create_~dll~0#1.base|) |v_ULTIMATE.start_loop_~node~0#1.offset_76|) |v_ULTIMATE.start_loop_~node~0#1.offset_75|)))))) (not (= (store .cse5 .cse10 (select v_ArrVal_2189 .cse10)) v_ArrVal_2189))))))))))) is different from false [2024-11-14 03:44:35,528 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse6 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (let ((.cse7 (select |c_#memory_$Pointer$.base| .cse6)) (.cse9 (select |c_#memory_$Pointer$.offset| .cse6)) (.cse0 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (and (forall ((|v_ULTIMATE.start_create_#t~mem8#1.offset_56| Int)) (or (< |v_ULTIMATE.start_create_#t~mem8#1.offset_56| .cse0) (forall ((v_ArrVal_2186 Int) (v_ArrVal_2189 (Array Int Int))) (let ((.cse8 (+ 8 |v_ULTIMATE.start_create_#t~mem8#1.offset_56|))) (let ((.cse4 (store |c_#memory_$Pointer$.offset| .cse6 (store .cse9 .cse8 v_ArrVal_2186))) (.cse2 (store |c_#memory_$Pointer$.base| .cse6 (store .cse7 .cse8 |c_ULTIMATE.start_create_~now~0#1.base|)))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|)) (.cse5 (+ (select (select .cse4 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) 16))) (or (forall ((v_ArrVal_2188 Int) (|v_ULTIMATE.start_loop_~node~0#1.offset_76| Int)) (or (forall ((|v_ULTIMATE.start_loop_~node~0#1.offset_75| Int)) (or (< |v_ULTIMATE.start_loop_~node~0#1.offset_75| 0) (= (select (let ((.cse1 (store .cse2 .cse3 v_ArrVal_2189))) (select .cse1 (select (select .cse1 |c_ULTIMATE.start_create_~dll~0#1.base|) |v_ULTIMATE.start_loop_~node~0#1.offset_76|))) |v_ULTIMATE.start_loop_~node~0#1.offset_75|) 0) (< (select (select (store .cse4 .cse3 (store (select .cse4 .cse3) .cse5 v_ArrVal_2188)) |c_ULTIMATE.start_create_~dll~0#1.base|) |v_ULTIMATE.start_loop_~node~0#1.offset_76|) |v_ULTIMATE.start_loop_~node~0#1.offset_75|))) (< |c_ULTIMATE.start_create_~dll~0#1.offset| |v_ULTIMATE.start_loop_~node~0#1.offset_76|) (< |v_ULTIMATE.start_loop_~node~0#1.offset_76| 0))) (not (= (store (select .cse2 .cse3) .cse5 (select v_ArrVal_2189 .cse5)) v_ArrVal_2189))))))))) (forall ((|v_ULTIMATE.start_create_#t~mem8#1.offset_56| Int)) (or (forall ((v_ArrVal_2186 Int) (v_ArrVal_2189 (Array Int Int))) (let ((.cse15 (+ 8 |v_ULTIMATE.start_create_#t~mem8#1.offset_56|))) (let ((.cse13 (store |c_#memory_$Pointer$.offset| .cse6 (store .cse9 .cse15 v_ArrVal_2186))) (.cse11 (store |c_#memory_$Pointer$.base| .cse6 (store .cse7 .cse15 |c_ULTIMATE.start_create_~now~0#1.base|)))) (let ((.cse12 (select (select .cse11 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|)) (.cse14 (+ (select (select .cse13 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) 16))) (or (forall ((v_ArrVal_2188 Int) (|v_ULTIMATE.start_loop_~node~0#1.offset_76| Int)) (or (forall ((|v_ULTIMATE.start_loop_~node~0#1.offset_75| Int)) (let ((.cse10 (store .cse13 .cse12 (store (select .cse13 .cse12) .cse14 v_ArrVal_2188)))) (or (< |v_ULTIMATE.start_loop_~node~0#1.offset_75| 0) (= (select (select .cse10 (select (select (store .cse11 .cse12 v_ArrVal_2189) |c_ULTIMATE.start_create_~dll~0#1.base|) |v_ULTIMATE.start_loop_~node~0#1.offset_76|)) |v_ULTIMATE.start_loop_~node~0#1.offset_75|) 0) (< (select (select .cse10 |c_ULTIMATE.start_create_~dll~0#1.base|) |v_ULTIMATE.start_loop_~node~0#1.offset_76|) |v_ULTIMATE.start_loop_~node~0#1.offset_75|)))) (< |c_ULTIMATE.start_create_~dll~0#1.offset| |v_ULTIMATE.start_loop_~node~0#1.offset_76|) (< |v_ULTIMATE.start_loop_~node~0#1.offset_76| 0))) (not (= (store (select .cse11 .cse12) .cse14 (select v_ArrVal_2189 .cse14)) v_ArrVal_2189))))))) (< |v_ULTIMATE.start_create_#t~mem8#1.offset_56| .cse0)))))) is different from false [2024-11-14 03:44:35,831 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse8 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_~now~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset| |c_ULTIMATE.start_create_#t~ret7#1.offset|))) (.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset| |c_ULTIMATE.start_create_#t~ret7#1.base|)))) (let ((.cse6 (select .cse5 |c_ULTIMATE.start_create_#t~ret7#1.base|)) (.cse9 (select .cse8 |c_ULTIMATE.start_create_#t~ret7#1.base|))) (and (forall ((|v_ULTIMATE.start_create_#t~mem8#1.offset_56| Int)) (or (forall ((v_ArrVal_2186 Int) (v_ArrVal_2189 (Array Int Int))) (let ((.cse7 (+ 8 |v_ULTIMATE.start_create_#t~mem8#1.offset_56|))) (let ((.cse3 (store .cse8 |c_ULTIMATE.start_create_#t~ret7#1.base| (store .cse9 .cse7 v_ArrVal_2186))) (.cse1 (store .cse5 |c_ULTIMATE.start_create_#t~ret7#1.base| (store .cse6 .cse7 |c_ULTIMATE.start_create_~now~0#1.base|)))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|)) (.cse4 (+ (select (select .cse3 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) 16))) (or (forall ((v_ArrVal_2188 Int) (|v_ULTIMATE.start_loop_~node~0#1.offset_76| Int)) (or (< |c_ULTIMATE.start_create_~dll~0#1.offset| |v_ULTIMATE.start_loop_~node~0#1.offset_76|) (< |v_ULTIMATE.start_loop_~node~0#1.offset_76| 0) (forall ((|v_ULTIMATE.start_loop_~node~0#1.offset_75| Int)) (let ((.cse0 (store .cse3 .cse2 (store (select .cse3 .cse2) .cse4 v_ArrVal_2188)))) (or (< |v_ULTIMATE.start_loop_~node~0#1.offset_75| 0) (= (select (select .cse0 (select (select (store .cse1 .cse2 v_ArrVal_2189) |c_ULTIMATE.start_create_~dll~0#1.base|) |v_ULTIMATE.start_loop_~node~0#1.offset_76|)) |v_ULTIMATE.start_loop_~node~0#1.offset_75|) 0) (< (select (select .cse0 |c_ULTIMATE.start_create_~dll~0#1.base|) |v_ULTIMATE.start_loop_~node~0#1.offset_76|) |v_ULTIMATE.start_loop_~node~0#1.offset_75|)))))) (not (= (store (select .cse1 .cse2) .cse4 (select v_ArrVal_2189 .cse4)) v_ArrVal_2189))))))) (< |v_ULTIMATE.start_create_#t~mem8#1.offset_56| |c_ULTIMATE.start_create_#t~ret7#1.offset|))) (forall ((|v_ULTIMATE.start_create_#t~mem8#1.offset_56| Int)) (or (forall ((v_ArrVal_2186 Int) (v_ArrVal_2189 (Array Int Int))) (let ((.cse15 (+ 8 |v_ULTIMATE.start_create_#t~mem8#1.offset_56|))) (let ((.cse13 (store .cse8 |c_ULTIMATE.start_create_#t~ret7#1.base| (store .cse9 .cse15 v_ArrVal_2186))) (.cse11 (store .cse5 |c_ULTIMATE.start_create_#t~ret7#1.base| (store .cse6 .cse15 |c_ULTIMATE.start_create_~now~0#1.base|)))) (let ((.cse12 (select (select .cse11 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|)) (.cse14 (+ (select (select .cse13 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) 16))) (or (forall ((v_ArrVal_2188 Int) (|v_ULTIMATE.start_loop_~node~0#1.offset_76| Int)) (or (< |c_ULTIMATE.start_create_~dll~0#1.offset| |v_ULTIMATE.start_loop_~node~0#1.offset_76|) (< |v_ULTIMATE.start_loop_~node~0#1.offset_76| 0) (forall ((|v_ULTIMATE.start_loop_~node~0#1.offset_75| Int)) (or (< |v_ULTIMATE.start_loop_~node~0#1.offset_75| 0) (= (select (let ((.cse10 (store .cse11 .cse12 v_ArrVal_2189))) (select .cse10 (select (select .cse10 |c_ULTIMATE.start_create_~dll~0#1.base|) |v_ULTIMATE.start_loop_~node~0#1.offset_76|))) |v_ULTIMATE.start_loop_~node~0#1.offset_75|) 0) (< (select (select (store .cse13 .cse12 (store (select .cse13 .cse12) .cse14 v_ArrVal_2188)) |c_ULTIMATE.start_create_~dll~0#1.base|) |v_ULTIMATE.start_loop_~node~0#1.offset_76|) |v_ULTIMATE.start_loop_~node~0#1.offset_75|))))) (not (= (store (select .cse11 .cse12) .cse14 (select v_ArrVal_2189 .cse14)) v_ArrVal_2189))))))) (< |v_ULTIMATE.start_create_#t~mem8#1.offset_56| |c_ULTIMATE.start_create_#t~ret7#1.offset|)))))) is different from false [2024-11-14 03:44:38,156 INFO L349 Elim1Store]: treesize reduction 919, result has 23.4 percent of original size [2024-11-14 03:44:38,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 16 case distinctions, treesize of input 46195 treesize of output 34474 [2024-11-14 03:44:42,780 INFO L349 Elim1Store]: treesize reduction 317, result has 32.8 percent of original size [2024-11-14 03:44:42,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 15 new quantified variables, introduced 37 case distinctions, treesize of input 213270 treesize of output 112990 [2024-11-14 03:44:50,590 INFO L349 Elim1Store]: treesize reduction 364, result has 32.3 percent of original size [2024-11-14 03:44:50,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 14 new quantified variables, introduced 46 case distinctions, treesize of input 54419 treesize of output 39388 [2024-11-14 03:44:56,880 INFO L349 Elim1Store]: treesize reduction 8, result has 97.5 percent of original size [2024-11-14 03:44:56,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 14 new quantified variables, introduced 36 case distinctions, treesize of input 52735 treesize of output 38953 [2024-11-14 03:44:58,757 INFO L224 Elim1Store]: Index analysis took 219 ms [2024-11-14 03:45:01,580 INFO L349 Elim1Store]: treesize reduction 475, result has 32.0 percent of original size [2024-11-14 03:45:01,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 9 new quantified variables, introduced 37 case distinctions, treesize of input 37912 treesize of output 37033 [2024-11-14 03:45:02,858 INFO L224 Elim1Store]: Index analysis took 262 ms [2024-11-14 03:45:06,169 INFO L349 Elim1Store]: treesize reduction 10, result has 97.6 percent of original size [2024-11-14 03:45:06,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 36417 treesize of output 36297 [2024-11-14 03:49:09,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2024-11-14 03:49:09,348 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-14 03:49:09,349 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2024-11-14 03:49:09,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1019655495] [2024-11-14 03:49:09,351 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2024-11-14 03:49:09,351 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:49:09,352 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:49:09,352 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:49:09,352 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:49:09,361 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:132) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.checkSatTerm(SmtUtils.java:326) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.isFalse(SymbolicTools.java:220) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.RelationCheckUtil.isEqBottom_SolverAlphaSolver(RelationCheckUtil.java:56) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.ExplicitValueDomain.isEqBottom(ExplicitValueDomain.java:73) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.CompoundDomain.isEqBottom(CompoundDomain.java:84) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.StatsWrapperDomain.isEqBottom(StatsWrapperDomain.java:69) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.earlyExitAfterStep(DagInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:276) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:447) at java.base/java.io.OutputStream.write(OutputStream.java:167) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:125) at java.base/java.io.BufferedOutputStream.implFlush(BufferedOutputStream.java:252) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:246) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:412) at java.base/sun.nio.cs.StreamEncoder.lockedFlush(StreamEncoder.java:214) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:201) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:262) at java.base/java.io.BufferedWriter.implFlush(BufferedWriter.java:372) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:359) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 44 more [2024-11-14 03:49:09,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:49:09,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2024-11-14 03:49:09,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004309120] [2024-11-14 03:49:09,368 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-14 03:49:09,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-14 03:49:09,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:49:09,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-14 03:49:09,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1154, Unknown=5, NotChecked=360, Total=1640 [2024-11-14 03:49:09,375 INFO L87 Difference]: Start difference. First operand 71 states and 86 transitions. Second operand has 19 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:49:09,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=121, Invalid=1154, Unknown=5, NotChecked=360, Total=1640 [2024-11-14 03:49:09,376 INFO L432 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:49:09,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:49:09,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-14 03:49:09,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-14 03:49:09,578 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_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertCodeBlock(IncrementalHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:278) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1708) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:762) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:385) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:276) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:447) at java.base/java.io.OutputStream.write(OutputStream.java:167) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:125) at java.base/java.io.BufferedOutputStream.implFlush(BufferedOutputStream.java:252) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:246) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:412) at java.base/sun.nio.cs.StreamEncoder.lockedFlush(StreamEncoder.java:214) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:201) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:262) at java.base/java.io.BufferedWriter.implFlush(BufferedWriter.java:372) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:359) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 36 more [2024-11-14 03:49:09,588 INFO L158 Benchmark]: Toolchain (without parser) took 662877.12ms. Allocated memory was 142.6MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 115.8MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 542.3MB. Max. memory is 16.1GB. [2024-11-14 03:49:09,588 INFO L158 Benchmark]: CDTParser took 1.29ms. Allocated memory is still 117.4MB. Free memory is still 74.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:49:09,590 INFO L158 Benchmark]: CACSL2BoogieTranslator took 572.41ms. Allocated memory is still 142.6MB. Free memory was 115.6MB in the beginning and 96.8MB in the end (delta: 18.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 03:49:09,595 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.00ms. Allocated memory is still 142.6MB. Free memory was 96.8MB in the beginning and 95.2MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 03:49:09,595 INFO L158 Benchmark]: Boogie Preprocessor took 31.97ms. Allocated memory is still 142.6MB. Free memory was 95.2MB in the beginning and 93.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:49:09,595 INFO L158 Benchmark]: RCFGBuilder took 728.17ms. Allocated memory is still 142.6MB. Free memory was 93.9MB in the beginning and 72.7MB in the end (delta: 21.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 03:49:09,595 INFO L158 Benchmark]: TraceAbstraction took 661483.76ms. Allocated memory was 142.6MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 72.1MB in the beginning and 1.1GB in the end (delta: -1.1GB). Peak memory consumption was 508.8MB. Max. memory is 16.1GB. [2024-11-14 03:49:09,597 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.29ms. Allocated memory is still 117.4MB. Free memory is still 74.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 572.41ms. Allocated memory is still 142.6MB. Free memory was 115.6MB in the beginning and 96.8MB in the end (delta: 18.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.00ms. Allocated memory is still 142.6MB. Free memory was 96.8MB in the beginning and 95.2MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.97ms. Allocated memory is still 142.6MB. Free memory was 95.2MB in the beginning and 93.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 728.17ms. Allocated memory is still 142.6MB. Free memory was 93.9MB in the beginning and 72.7MB in the end (delta: 21.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 661483.76ms. Allocated memory was 142.6MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 72.1MB in the beginning and 1.1GB in the end (delta: -1.1GB). Peak memory consumption was 508.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-broom/dll-fst-data.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0c43b1e86d53f0a623ddcdf970bae6b5fd24ed69ec4a9688050aa705dc6cf897 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:49:12,940 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:49:13,093 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf [2024-11-14 03:49:13,103 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:49:13,104 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:49:13,176 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:49:13,183 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:49:13,183 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:49:13,184 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:49:13,184 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:49:13,184 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:49:13,184 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:49:13,184 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:49:13,185 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:49:13,185 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:49:13,185 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:49:13,185 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 03:49:13,191 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 03:49:13,191 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:49:13,191 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:49:13,191 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:49:13,191 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 03:49:13,191 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 03:49:13,191 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 03:49:13,192 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:49:13,192 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 03:49:13,192 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-14 03:49:13,192 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:49:13,192 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-14 03:49:13,192 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 03:49:13,192 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:49:13,192 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:49:13,192 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-14 03:49:13,193 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:49:13,193 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:49:13,193 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:49:13,193 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:49:13,193 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:49:13,193 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-14 03:49:13,193 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-14 03:49:13,193 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:49:13,193 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:49:13,194 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c43b1e86d53f0a623ddcdf970bae6b5fd24ed69ec4a9688050aa705dc6cf897 [2024-11-14 03:49:13,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:49:13,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:49:13,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:49:13,631 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:49:13,632 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:49:13,633 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/memsafety-broom/dll-fst-data.i Unable to find full path for "g++" [2024-11-14 03:49:16,075 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:49:16,554 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:49:16,557 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/sv-benchmarks/c/memsafety-broom/dll-fst-data.i [2024-11-14 03:49:16,616 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/data/84fdef9d6/5e609ea383f1494db4b78152a728f294/FLAG830126eb1 [2024-11-14 03:49:16,650 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/data/84fdef9d6/5e609ea383f1494db4b78152a728f294 [2024-11-14 03:49:16,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:49:16,655 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:49:16,657 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:49:16,659 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:49:16,666 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:49:16,667 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:49:16" (1/1) ... [2024-11-14 03:49:16,668 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@203448e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:16, skipping insertion in model container [2024-11-14 03:49:16,670 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:49:16" (1/1) ... [2024-11-14 03:49:16,749 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:49:17,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:49:17,199 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:49:17,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:49:17,339 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:49:17,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:17 WrapperNode [2024-11-14 03:49:17,340 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:49:17,342 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:49:17,342 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:49:17,343 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:49:17,354 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:17" (1/1) ... [2024-11-14 03:49:17,382 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:17" (1/1) ... [2024-11-14 03:49:17,414 INFO L138 Inliner]: procedures = 122, calls = 22, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 64 [2024-11-14 03:49:17,418 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:49:17,419 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:49:17,419 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:49:17,419 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:49:17,431 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:17" (1/1) ... [2024-11-14 03:49:17,432 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:17" (1/1) ... [2024-11-14 03:49:17,440 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:17" (1/1) ... [2024-11-14 03:49:17,440 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:17" (1/1) ... [2024-11-14 03:49:17,460 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:17" (1/1) ... [2024-11-14 03:49:17,468 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:17" (1/1) ... [2024-11-14 03:49:17,471 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:17" (1/1) ... [2024-11-14 03:49:17,475 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:17" (1/1) ... [2024-11-14 03:49:17,481 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:49:17,482 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:49:17,483 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:49:17,483 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:49:17,485 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:17" (1/1) ... [2024-11-14 03:49:17,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:49:17,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:49:17,536 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:49:17,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:49:17,573 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero [2024-11-14 03:49:17,573 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero [2024-11-14 03:49:17,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 03:49:17,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 03:49:17,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 03:49:17,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 03:49:17,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-11-14 03:49:17,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:49:17,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:49:17,746 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:49:17,748 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:49:18,388 INFO L? ?]: Removed 76 outVars from TransFormulas that were not future-live. [2024-11-14 03:49:18,389 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:49:18,403 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:49:18,403 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-14 03:49:18,404 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:49:18 BoogieIcfgContainer [2024-11-14 03:49:18,404 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:49:18,407 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:49:18,407 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:49:18,414 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:49:18,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:49:16" (1/3) ... [2024-11-14 03:49:18,416 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b88b2b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:49:18, skipping insertion in model container [2024-11-14 03:49:18,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:17" (2/3) ... [2024-11-14 03:49:18,416 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b88b2b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:49:18, skipping insertion in model container [2024-11-14 03:49:18,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:49:18" (3/3) ... [2024-11-14 03:49:18,419 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-fst-data.i [2024-11-14 03:49:18,453 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:49:18,455 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG dll-fst-data.i that has 2 procedures, 72 locations, 1 initial locations, 3 loop locations, and 28 error locations. [2024-11-14 03:49:18,505 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:49:18,521 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2c5edbde, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:49:18,521 INFO L334 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2024-11-14 03:49:18,527 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 40 states have (on average 1.85) internal successors, (74), 68 states have internal predecessors, (74), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:49:18,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-14 03:49:18,535 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:49:18,536 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-14 03:49:18,536 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:49:18,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:49:18,543 INFO L85 PathProgramCache]: Analyzing trace with hash 40228423, now seen corresponding path program 1 times [2024-11-14 03:49:18,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:49:18,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1278807274] [2024-11-14 03:49:18,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:18,559 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:49:18,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:49:18,564 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:49:18,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-14 03:49:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:18,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 03:49:18,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:49:18,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 03:49:18,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:49:18,802 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:49:18,803 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:49:18,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1278807274] [2024-11-14 03:49:18,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1278807274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:49:18,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:49:18,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:49:18,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025554296] [2024-11-14 03:49:18,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:49:18,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:49:18,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:49:18,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:49:18,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:49:18,856 INFO L87 Difference]: Start difference. First operand has 72 states, 40 states have (on average 1.85) internal successors, (74), 68 states have internal predecessors, (74), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:49:19,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:49:19,147 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2024-11-14 03:49:19,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:49:19,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-14 03:49:19,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:49:19,159 INFO L225 Difference]: With dead ends: 69 [2024-11-14 03:49:19,160 INFO L226 Difference]: Without dead ends: 67 [2024-11-14 03:49:19,162 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:49:19,168 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 3 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:49:19,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 105 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 03:49:19,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-14 03:49:19,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-11-14 03:49:19,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 63 states have internal predecessors, (66), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:49:19,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2024-11-14 03:49:19,232 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 5 [2024-11-14 03:49:19,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:49:19,233 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2024-11-14 03:49:19,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:49:19,233 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2024-11-14 03:49:19,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-14 03:49:19,234 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:49:19,235 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-14 03:49:19,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 03:49:19,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:49:19,436 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:49:19,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:49:19,437 INFO L85 PathProgramCache]: Analyzing trace with hash 40228424, now seen corresponding path program 1 times [2024-11-14 03:49:19,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:49:19,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2058975938] [2024-11-14 03:49:19,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:19,437 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:49:19,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:49:19,442 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:49:19,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-14 03:49:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:19,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:49:19,540 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:49:19,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 03:49:19,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:49:19,577 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:49:19,577 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:49:19,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2058975938] [2024-11-14 03:49:19,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2058975938] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:49:19,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:49:19,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:49:19,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072271157] [2024-11-14 03:49:19,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:49:19,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:49:19,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:49:19,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:49:19,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:49:19,580 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:49:19,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:49:19,837 INFO L93 Difference]: Finished difference Result 64 states and 67 transitions. [2024-11-14 03:49:19,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:49:19,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-14 03:49:19,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:49:19,839 INFO L225 Difference]: With dead ends: 64 [2024-11-14 03:49:19,840 INFO L226 Difference]: Without dead ends: 64 [2024-11-14 03:49:19,840 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:49:19,841 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 3 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:49:19,841 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 107 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:49:19,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-14 03:49:19,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-14 03:49:19,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 39 states have (on average 1.6153846153846154) internal successors, (63), 60 states have internal predecessors, (63), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:49:19,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2024-11-14 03:49:19,847 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 5 [2024-11-14 03:49:19,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:49:19,847 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2024-11-14 03:49:19,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:49:19,848 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2024-11-14 03:49:19,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-14 03:49:19,848 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:49:19,848 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:49:19,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 03:49:20,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:49:20,049 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:49:20,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:49:20,050 INFO L85 PathProgramCache]: Analyzing trace with hash -181534815, now seen corresponding path program 1 times [2024-11-14 03:49:20,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:49:20,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651453114] [2024-11-14 03:49:20,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:20,051 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:49:20,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:49:20,057 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:49:20,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-14 03:49:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:20,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 03:49:20,198 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:49:20,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 03:49:20,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:49:20,348 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:49:20,349 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:49:20,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651453114] [2024-11-14 03:49:20,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651453114] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:49:20,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:49:20,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:49:20,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899786665] [2024-11-14 03:49:20,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:49:20,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 03:49:20,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:49:20,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 03:49:20,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:49:20,356 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:49:20,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:49:20,921 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2024-11-14 03:49:20,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:49:20,922 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-14 03:49:20,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:49:20,924 INFO L225 Difference]: With dead ends: 65 [2024-11-14 03:49:20,924 INFO L226 Difference]: Without dead ends: 65 [2024-11-14 03:49:20,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:49:20,926 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 18 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:49:20,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 158 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 03:49:20,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-14 03:49:20,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2024-11-14 03:49:20,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.5128205128205128) internal successors, (59), 56 states have internal predecessors, (59), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:49:20,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2024-11-14 03:49:20,941 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 12 [2024-11-14 03:49:20,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:49:20,941 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2024-11-14 03:49:20,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:49:20,944 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2024-11-14 03:49:20,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-14 03:49:20,945 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:49:20,945 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:49:20,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-14 03:49:21,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:49:21,149 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:49:21,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:49:21,153 INFO L85 PathProgramCache]: Analyzing trace with hash -181534814, now seen corresponding path program 1 times [2024-11-14 03:49:21,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:49:21,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203457628] [2024-11-14 03:49:21,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:21,154 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:49:21,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:49:21,157 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:49:21,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-14 03:49:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:21,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 03:49:21,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:49:21,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 03:49:21,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:49:21,564 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:49:21,564 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:49:21,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203457628] [2024-11-14 03:49:21,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203457628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:49:21,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:49:21,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:49:21,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732134038] [2024-11-14 03:49:21,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:49:21,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 03:49:21,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:49:21,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 03:49:21,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:49:21,568 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:49:22,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:49:22,136 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2024-11-14 03:49:22,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:49:22,139 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-14 03:49:22,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:49:22,140 INFO L225 Difference]: With dead ends: 64 [2024-11-14 03:49:22,140 INFO L226 Difference]: Without dead ends: 64 [2024-11-14 03:49:22,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:49:22,141 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 03:49:22,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 192 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 03:49:22,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-14 03:49:22,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2024-11-14 03:49:22,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 55 states have internal predecessors, (58), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:49:22,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2024-11-14 03:49:22,155 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 12 [2024-11-14 03:49:22,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:49:22,155 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2024-11-14 03:49:22,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:49:22,155 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2024-11-14 03:49:22,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-14 03:49:22,156 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:49:22,156 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:49:22,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-11-14 03:49:22,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:49:22,357 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:49:22,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:49:22,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1845274196, now seen corresponding path program 1 times [2024-11-14 03:49:22,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:49:22,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1979069130] [2024-11-14 03:49:22,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:22,359 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:49:22,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:49:22,362 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:49:22,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-14 03:49:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:22,529 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 03:49:22,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:49:22,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 03:49:22,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:49:22,685 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:49:22,685 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:49:22,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1979069130] [2024-11-14 03:49:22,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1979069130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:49:22,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:49:22,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 03:49:22,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588920954] [2024-11-14 03:49:22,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:49:22,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 03:49:22,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:49:22,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 03:49:22,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:49:22,687 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:49:23,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:49:23,211 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2024-11-14 03:49:23,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 03:49:23,212 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-11-14 03:49:23,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:49:23,213 INFO L225 Difference]: With dead ends: 67 [2024-11-14 03:49:23,213 INFO L226 Difference]: Without dead ends: 67 [2024-11-14 03:49:23,214 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:49:23,214 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 1 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:49:23,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 220 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 03:49:23,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-14 03:49:23,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2024-11-14 03:49:23,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 46 states have (on average 1.4782608695652173) internal successors, (68), 62 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:49:23,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2024-11-14 03:49:23,222 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 20 [2024-11-14 03:49:23,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:49:23,223 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2024-11-14 03:49:23,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:49:23,223 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2024-11-14 03:49:23,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-14 03:49:23,224 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:49:23,224 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:49:23,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-11-14 03:49:23,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:49:23,428 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:49:23,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:49:23,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1845274195, now seen corresponding path program 1 times [2024-11-14 03:49:23,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:49:23,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1062352534] [2024-11-14 03:49:23,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:23,430 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:49:23,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:49:23,432 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:49:23,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-14 03:49:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:23,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 03:49:23,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:49:23,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 03:49:24,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:49:24,000 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:49:24,000 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:49:24,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1062352534] [2024-11-14 03:49:24,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1062352534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:49:24,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:49:24,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 03:49:24,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501969901] [2024-11-14 03:49:24,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:49:24,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 03:49:24,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:49:24,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 03:49:24,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:49:24,005 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:49:24,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:49:24,785 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2024-11-14 03:49:24,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 03:49:24,786 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-11-14 03:49:24,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:49:24,787 INFO L225 Difference]: With dead ends: 67 [2024-11-14 03:49:24,787 INFO L226 Difference]: Without dead ends: 67 [2024-11-14 03:49:24,787 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:49:24,788 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 1 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 03:49:24,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 235 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-14 03:49:24,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-14 03:49:24,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2024-11-14 03:49:24,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 46 states have (on average 1.4565217391304348) internal successors, (67), 62 states have internal predecessors, (67), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:49:24,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2024-11-14 03:49:24,796 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 20 [2024-11-14 03:49:24,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:49:24,797 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2024-11-14 03:49:24,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:49:24,797 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2024-11-14 03:49:24,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 03:49:24,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:49:24,798 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:49:24,808 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 03:49:25,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:49:25,003 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:49:25,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:49:25,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1368976601, now seen corresponding path program 1 times [2024-11-14 03:49:25,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:49:25,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1368291152] [2024-11-14 03:49:25,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:25,004 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:49:25,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:49:25,006 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:49:25,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 03:49:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:25,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 03:49:25,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:49:25,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:49:25,303 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:49:25,303 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:49:25,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1368291152] [2024-11-14 03:49:25,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1368291152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:49:25,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:49:25,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 03:49:25,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879402982] [2024-11-14 03:49:25,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:49:25,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 03:49:25,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:49:25,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 03:49:25,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:49:25,306 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:49:25,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:49:25,573 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2024-11-14 03:49:25,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 03:49:25,575 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2024-11-14 03:49:25,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:49:25,576 INFO L225 Difference]: With dead ends: 69 [2024-11-14 03:49:25,576 INFO L226 Difference]: Without dead ends: 69 [2024-11-14 03:49:25,576 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:49:25,577 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 23 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:49:25,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 334 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 03:49:25,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-14 03:49:25,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2024-11-14 03:49:25,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 47 states have (on average 1.425531914893617) internal successors, (67), 63 states have internal predecessors, (67), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:49:25,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2024-11-14 03:49:25,589 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 21 [2024-11-14 03:49:25,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:49:25,590 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2024-11-14 03:49:25,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:49:25,590 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2024-11-14 03:49:25,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 03:49:25,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:49:25,594 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:49:25,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-11-14 03:49:25,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:49:25,795 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:49:25,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:49:25,796 INFO L85 PathProgramCache]: Analyzing trace with hash 187041899, now seen corresponding path program 1 times [2024-11-14 03:49:25,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:49:25,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1072484365] [2024-11-14 03:49:25,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:25,797 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:49:25,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:49:25,799 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:49:25,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-11-14 03:49:26,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:26,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 03:49:26,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:49:26,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 03:49:26,179 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base (_ BitVec 64))) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_~pi~0.base (_ bv1 1)))) is different from true [2024-11-14 03:49:26,248 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-14 03:49:26,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-14 03:49:26,280 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2024-11-14 03:49:26,281 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:49:26,665 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:49:26,666 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:49:26,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1072484365] [2024-11-14 03:49:26,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1072484365] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:49:26,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1961976556] [2024-11-14 03:49:26,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:26,667 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:49:26,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:49:26,677 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:49:26,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-11-14 03:49:27,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:27,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 03:49:27,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:49:27,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 03:49:27,153 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-14 03:49:27,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-14 03:49:27,185 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2024-11-14 03:49:27,185 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:49:27,532 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:49:27,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1961976556] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:49:27,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462091012] [2024-11-14 03:49:27,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:27,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:49:27,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:49:27,536 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:49:27,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-14 03:49:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:27,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 03:49:27,720 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:49:27,943 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-14 03:49:27,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-14 03:49:27,956 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:49:27,956 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:49:28,296 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:49:28,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462091012] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:49:28,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 03:49:28,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7, 6, 7, 6] total 9 [2024-11-14 03:49:28,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29617459] [2024-11-14 03:49:28,297 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 03:49:28,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 03:49:28,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:49:28,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 03:49:28,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=56, Unknown=1, NotChecked=14, Total=90 [2024-11-14 03:49:28,300 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 8 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 03:49:29,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:49:29,082 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2024-11-14 03:49:29,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 03:49:29,083 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 8 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2024-11-14 03:49:29,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:49:29,084 INFO L225 Difference]: With dead ends: 69 [2024-11-14 03:49:29,084 INFO L226 Difference]: Without dead ends: 69 [2024-11-14 03:49:29,084 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 121 SyntacticMatches, 10 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=84, Unknown=1, NotChecked=18, Total=132 [2024-11-14 03:49:29,085 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 15 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 03:49:29,085 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 208 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 195 Invalid, 0 Unknown, 65 Unchecked, 0.7s Time] [2024-11-14 03:49:29,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-14 03:49:29,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-14 03:49:29,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 48 states have (on average 1.4375) internal successors, (69), 64 states have internal predecessors, (69), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:49:29,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2024-11-14 03:49:29,096 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 24 [2024-11-14 03:49:29,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:49:29,096 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2024-11-14 03:49:29,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 8 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 03:49:29,097 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2024-11-14 03:49:29,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 03:49:29,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:49:29,101 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:49:29,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-14 03:49:29,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2024-11-14 03:49:29,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 03:49:29,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:49:29,703 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:49:29,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:49:29,703 INFO L85 PathProgramCache]: Analyzing trace with hash 187041900, now seen corresponding path program 1 times [2024-11-14 03:49:29,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:49:29,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [323094466] [2024-11-14 03:49:29,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:29,704 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:49:29,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:49:29,707 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:49:29,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-11-14 03:49:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:29,923 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 03:49:29,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:49:29,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 03:49:29,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 03:49:30,319 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base (_ BitVec 64))) (and (= (store |c_old(#length)| alloc_and_zero_~pi~0.base (select |c_#length| alloc_and_zero_~pi~0.base)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| alloc_and_zero_~pi~0.base)))) is different from true [2024-11-14 03:49:30,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:49:30,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-14 03:49:30,439 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:49:30,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-14 03:49:30,478 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2024-11-14 03:49:30,479 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:49:31,009 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:49:31,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [323094466] [2024-11-14 03:49:31,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [323094466] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:49:31,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2019560299] [2024-11-14 03:49:31,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:31,010 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:49:31,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:49:31,013 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:49:31,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2024-11-14 03:49:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:31,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 03:49:31,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:49:31,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 03:49:31,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 03:49:31,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:49:31,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-14 03:49:31,816 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:49:31,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-14 03:49:31,818 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2024-11-14 03:49:31,818 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:49:32,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2019560299] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:49:32,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758604995] [2024-11-14 03:49:32,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:32,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:49:32,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:49:32,100 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:49:32,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-14 03:49:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:32,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-14 03:49:32,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:49:32,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 03:49:32,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:49:32,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-14 03:49:32,651 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:49:32,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-14 03:49:32,657 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2024-11-14 03:49:32,657 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:49:33,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758604995] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:49:33,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:49:33,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 9 [2024-11-14 03:49:33,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347241440] [2024-11-14 03:49:33,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:49:33,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 03:49:33,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:49:33,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 03:49:33,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=87, Unknown=1, NotChecked=18, Total=132 [2024-11-14 03:49:33,006 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 7 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:49:33,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:49:33,958 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2024-11-14 03:49:33,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 03:49:33,959 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 7 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2024-11-14 03:49:33,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:49:33,960 INFO L225 Difference]: With dead ends: 82 [2024-11-14 03:49:33,960 INFO L226 Difference]: Without dead ends: 82 [2024-11-14 03:49:33,960 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=33, Invalid=126, Unknown=1, NotChecked=22, Total=182 [2024-11-14 03:49:33,961 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 14 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 03:49:33,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 207 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 212 Invalid, 0 Unknown, 77 Unchecked, 0.8s Time] [2024-11-14 03:49:33,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-14 03:49:33,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2024-11-14 03:49:33,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 73 states have internal predecessors, (81), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:49:33,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2024-11-14 03:49:33,968 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 24 [2024-11-14 03:49:33,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:49:33,969 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2024-11-14 03:49:33,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 7 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:49:33,969 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2024-11-14 03:49:33,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 03:49:33,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:49:33,970 INFO L215 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] [2024-11-14 03:49:33,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2024-11-14 03:49:34,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-14 03:49:34,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 03:49:34,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:49:34,571 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:49:34,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:49:34,572 INFO L85 PathProgramCache]: Analyzing trace with hash -935674009, now seen corresponding path program 1 times [2024-11-14 03:49:34,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:49:34,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1677517393] [2024-11-14 03:49:34,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:34,572 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:49:34,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:49:34,574 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:49:34,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-11-14 03:49:34,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:34,767 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-14 03:49:34,770 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:49:34,785 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 [2024-11-14 03:49:34,794 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 [2024-11-14 03:49:34,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-14 03:49:34,871 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 [2024-11-14 03:49:34,934 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:49:34,934 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 1 case distinctions, treesize of input 30 treesize of output 21 [2024-11-14 03:49:34,959 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 [2024-11-14 03:49:35,225 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 23 treesize of output 11 [2024-11-14 03:49:35,236 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 [2024-11-14 03:49:35,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:49:35,673 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:49:36,066 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_ULTIMATE.start_create_~now~0#1.offset| (_ bv16 64)))) (and (forall ((v_ArrVal_467 (_ BitVec 64))) (= (_ bv0 64) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) .cse0 v_ArrVal_467)) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))) (forall ((v_ArrVal_469 (Array (_ BitVec 64) (_ BitVec 64)))) (or (= (_ bv0 64) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_~now~0#1.base| v_ArrVal_469) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)) (not (= (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_~now~0#1.base|) .cse0 (select v_ArrVal_469 .cse0)) v_ArrVal_469)))))) is different from false [2024-11-14 03:49:38,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:49:38,723 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:49:38,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1677517393] [2024-11-14 03:49:38,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1677517393] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:49:38,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1797863441] [2024-11-14 03:49:38,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:38,723 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:49:38,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:49:38,729 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:49:38,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2024-11-14 03:49:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:39,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-14 03:49:39,108 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:49:39,128 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 [2024-11-14 03:49:39,143 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 [2024-11-14 03:49:39,160 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 [2024-11-14 03:49:39,172 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 [2024-11-14 03:49:39,202 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 [2024-11-14 03:49:39,214 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 [2024-11-14 03:49:39,355 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:49:39,355 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 1 case distinctions, treesize of input 30 treesize of output 21 [2024-11-14 03:49:39,372 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 [2024-11-14 03:49:39,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:49:39,561 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:49:39,795 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_ULTIMATE.start_create_~now~0#1.offset| (_ bv16 64)))) (and (forall ((v_ArrVal_512 (_ BitVec 64))) (= (_ bv0 64) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) .cse0 v_ArrVal_512)) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))) (forall ((v_ArrVal_514 (Array (_ BitVec 64) (_ BitVec 64)))) (or (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_~now~0#1.base| v_ArrVal_514) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|) (_ bv0 64)) (not (= v_ArrVal_514 (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_~now~0#1.base|) .cse0 (select v_ArrVal_514 .cse0)))))))) is different from false [2024-11-14 03:49:42,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:49:42,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1797863441] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:49:42,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74827009] [2024-11-14 03:49:42,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:42,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:49:42,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:49:42,624 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:49:42,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-14 03:49:42,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:42,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-14 03:49:42,766 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:49:42,772 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 [2024-11-14 03:49:42,783 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 [2024-11-14 03:49:42,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-14 03:49:42,813 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 [2024-11-14 03:49:42,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-14 03:49:42,965 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 36 treesize of output 23 [2024-11-14 03:49:43,438 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:49:43,438 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 23 [2024-11-14 03:49:43,460 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 [2024-11-14 03:49:43,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:49:43,877 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:49:44,057 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_ULTIMATE.start_create_~now~0#1.offset| (_ bv16 64)))) (and (forall ((v_ArrVal_559 (_ BitVec 64))) (= (_ bv0 64) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) .cse0 v_ArrVal_559)) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))) (forall ((v_ArrVal_558 (Array (_ BitVec 64) (_ BitVec 64)))) (or (= (_ bv0 64) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_~now~0#1.base| v_ArrVal_558) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)) (not (= v_ArrVal_558 (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_~now~0#1.base|) .cse0 (select v_ArrVal_558 .cse0)))))))) is different from false [2024-11-14 03:49:46,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:49:46,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74827009] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:49:46,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 03:49:46,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 13, 11, 12, 11] total 29 [2024-11-14 03:49:46,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613808410] [2024-11-14 03:49:46,461 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 03:49:46,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-14 03:49:46,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:49:46,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-14 03:49:46,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=576, Unknown=3, NotChecked=150, Total=812 [2024-11-14 03:49:46,464 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 29 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 26 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 03:49:47,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:49:47,886 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2024-11-14 03:49:47,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 03:49:47,887 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 26 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2024-11-14 03:49:47,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:49:47,887 INFO L225 Difference]: With dead ends: 80 [2024-11-14 03:49:47,887 INFO L226 Difference]: Without dead ends: 80 [2024-11-14 03:49:47,888 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=83, Invalid=576, Unknown=3, NotChecked=150, Total=812 [2024-11-14 03:49:47,889 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 9 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:49:47,889 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 760 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 320 Invalid, 0 Unknown, 114 Unchecked, 1.3s Time] [2024-11-14 03:49:47,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-14 03:49:47,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-11-14 03:49:47,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 59 states have (on average 1.4067796610169492) internal successors, (83), 75 states have internal predecessors, (83), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:49:47,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2024-11-14 03:49:47,896 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 24 [2024-11-14 03:49:47,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:49:47,896 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2024-11-14 03:49:47,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 26 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 03:49:47,897 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2024-11-14 03:49:47,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-14 03:49:47,897 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:49:47,898 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:49:47,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2024-11-14 03:49:48,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-11-14 03:49:48,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-14 03:49:48,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:49:48,499 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:49:48,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:49:48,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1058825420, now seen corresponding path program 1 times [2024-11-14 03:49:48,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:49:48,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [742200671] [2024-11-14 03:49:48,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:48,501 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:49:48,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:49:48,503 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:49:48,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-11-14 03:49:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:48,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 03:49:48,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:49:48,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 03:49:48,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:49:48,890 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:49:48,890 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:49:48,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [742200671] [2024-11-14 03:49:48,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [742200671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:49:48,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:49:48,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 03:49:48,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707609397] [2024-11-14 03:49:48,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:49:48,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 03:49:48,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:49:48,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 03:49:48,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-14 03:49:48,892 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:49:49,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:49:49,689 INFO L93 Difference]: Finished difference Result 82 states and 93 transitions. [2024-11-14 03:49:49,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 03:49:49,690 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2024-11-14 03:49:49,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:49:49,691 INFO L225 Difference]: With dead ends: 82 [2024-11-14 03:49:49,691 INFO L226 Difference]: Without dead ends: 82 [2024-11-14 03:49:49,691 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-14 03:49:49,692 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 03:49:49,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 220 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-14 03:49:49,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-14 03:49:49,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-14 03:49:49,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 62 states have (on average 1.403225806451613) internal successors, (87), 77 states have internal predecessors, (87), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:49:49,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2024-11-14 03:49:49,704 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 25 [2024-11-14 03:49:49,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:49:49,704 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 93 transitions. [2024-11-14 03:49:49,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:49:49,707 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions. [2024-11-14 03:49:49,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-14 03:49:49,707 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:49:49,707 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:49:49,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2024-11-14 03:49:49,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:49:49,908 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:49:49,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:49:49,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1058825421, now seen corresponding path program 1 times [2024-11-14 03:49:49,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:49:49,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665264265] [2024-11-14 03:49:49,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:49,909 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:49:49,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:49:49,911 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:49:49,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 03:49:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:50,101 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 03:49:50,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:49:50,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 03:49:50,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:49:50,440 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:49:50,441 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:49:50,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665264265] [2024-11-14 03:49:50,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665264265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:49:50,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:49:50,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 03:49:50,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591317607] [2024-11-14 03:49:50,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:49:50,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 03:49:50,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:49:50,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 03:49:50,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-14 03:49:50,442 INFO L87 Difference]: Start difference. First operand 82 states and 93 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:49:51,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:49:51,462 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2024-11-14 03:49:51,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 03:49:51,463 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2024-11-14 03:49:51,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:49:51,464 INFO L225 Difference]: With dead ends: 84 [2024-11-14 03:49:51,464 INFO L226 Difference]: Without dead ends: 84 [2024-11-14 03:49:51,464 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-14 03:49:51,466 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 3 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:49:51,466 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 238 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 03:49:51,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-14 03:49:51,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-14 03:49:51,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 64 states have (on average 1.375) internal successors, (88), 79 states have internal predecessors, (88), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:49:51,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2024-11-14 03:49:51,472 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 25 [2024-11-14 03:49:51,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:49:51,472 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2024-11-14 03:49:51,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:49:51,473 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2024-11-14 03:49:51,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-14 03:49:51,474 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:49:51,474 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:49:51,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 03:49:51,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:49:51,675 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:49:51,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:49:51,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1536151797, now seen corresponding path program 1 times [2024-11-14 03:49:51,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:49:51,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [66753885] [2024-11-14 03:49:51,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:51,676 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:49:51,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:49:51,678 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:49:51,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 03:49:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:51,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 03:49:51,839 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:49:51,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:49:51,982 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:49:51,982 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:49:51,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [66753885] [2024-11-14 03:49:51,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [66753885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:49:51,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:49:51,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-14 03:49:51,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152181229] [2024-11-14 03:49:51,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:49:51,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 03:49:51,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:49:51,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 03:49:51,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-14 03:49:51,984 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:49:52,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:49:52,317 INFO L93 Difference]: Finished difference Result 91 states and 103 transitions. [2024-11-14 03:49:52,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 03:49:52,319 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2024-11-14 03:49:52,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:49:52,319 INFO L225 Difference]: With dead ends: 91 [2024-11-14 03:49:52,320 INFO L226 Difference]: Without dead ends: 91 [2024-11-14 03:49:52,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-14 03:49:52,320 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 29 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:49:52,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 347 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 03:49:52,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-14 03:49:52,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 85. [2024-11-14 03:49:52,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 65 states have (on average 1.353846153846154) internal successors, (88), 80 states have internal predecessors, (88), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:49:52,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2024-11-14 03:49:52,327 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 26 [2024-11-14 03:49:52,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:49:52,327 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2024-11-14 03:49:52,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:49:52,327 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2024-11-14 03:49:52,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-14 03:49:52,328 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:49:52,328 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:49:52,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 03:49:52,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:49:52,529 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:49:52,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:49:52,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1592634204, now seen corresponding path program 1 times [2024-11-14 03:49:52,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:49:52,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310434978] [2024-11-14 03:49:52,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:52,531 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:49:52,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:49:52,540 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:49:52,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2024-11-14 03:49:52,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:52,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 03:49:52,720 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:49:52,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 03:49:52,774 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 [2024-11-14 03:49:52,806 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 [2024-11-14 03:49:52,825 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:49:52,825 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:49:52,825 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:49:52,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310434978] [2024-11-14 03:49:52,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310434978] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:49:52,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:49:52,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 03:49:52,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145571000] [2024-11-14 03:49:52,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:49:52,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 03:49:52,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:49:52,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 03:49:52,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:49:52,827 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 03:49:53,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:49:53,362 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2024-11-14 03:49:53,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 03:49:53,363 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2024-11-14 03:49:53,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:49:53,364 INFO L225 Difference]: With dead ends: 84 [2024-11-14 03:49:53,364 INFO L226 Difference]: Without dead ends: 84 [2024-11-14 03:49:53,364 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:49:53,365 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 9 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:49:53,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 196 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 03:49:53,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-14 03:49:53,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-14 03:49:53,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 65 states have (on average 1.323076923076923) internal successors, (86), 79 states have internal predecessors, (86), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:49:53,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2024-11-14 03:49:53,370 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 27 [2024-11-14 03:49:53,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:49:53,370 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2024-11-14 03:49:53,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 03:49:53,370 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2024-11-14 03:49:53,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-14 03:49:53,371 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:49:53,371 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:49:53,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 03:49:53,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:49:53,572 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:49:53,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:49:53,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1592634205, now seen corresponding path program 1 times [2024-11-14 03:49:53,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:49:53,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [469721304] [2024-11-14 03:49:53,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:53,574 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 [2024-11-14 03:49:53,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:49:53,578 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:49:53,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 03:49:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:53,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 03:49:53,803 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:49:53,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 03:49:53,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-14 03:49:53,938 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 [2024-11-14 03:49:53,987 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 17 treesize of output 9 [2024-11-14 03:49:54,018 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:49:54,018 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:49:54,018 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:49:54,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [469721304] [2024-11-14 03:49:54,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [469721304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:49:54,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:49:54,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 03:49:54,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342527160] [2024-11-14 03:49:54,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:49:54,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 03:49:54,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:49:54,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 03:49:54,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:49:54,020 INFO L87 Difference]: Start difference. First operand 84 states and 92 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 03:49:54,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:49:54,603 INFO L93 Difference]: Finished difference Result 83 states and 90 transitions. [2024-11-14 03:49:54,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 03:49:54,604 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2024-11-14 03:49:54,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:49:54,605 INFO L225 Difference]: With dead ends: 83 [2024-11-14 03:49:54,605 INFO L226 Difference]: Without dead ends: 83 [2024-11-14 03:49:54,605 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:49:54,606 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 3 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:49:54,606 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 216 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 03:49:54,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-14 03:49:54,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-11-14 03:49:54,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.2923076923076924) internal successors, (84), 78 states have internal predecessors, (84), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:49:54,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 90 transitions. [2024-11-14 03:49:54,611 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 90 transitions. Word has length 27 [2024-11-14 03:49:54,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:49:54,611 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 90 transitions. [2024-11-14 03:49:54,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 03:49:54,612 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 90 transitions. [2024-11-14 03:49:54,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-14 03:49:54,613 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:49:54,613 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:49:54,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -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)] Forceful destruction successful, exit code 0 [2024-11-14 03:49:54,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:49:54,814 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:49:54,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:49:54,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1228324047, now seen corresponding path program 1 times [2024-11-14 03:49:54,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:49:54,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [198434973] [2024-11-14 03:49:54,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:54,815 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:49:54,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:49:54,817 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:49:54,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 03:49:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:55,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 03:49:55,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:49:55,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:49:55,545 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:49:55,546 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:49:55,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [198434973] [2024-11-14 03:49:55,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [198434973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:49:55,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:49:55,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 03:49:55,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112747614] [2024-11-14 03:49:55,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:49:55,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 03:49:55,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:49:55,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 03:49:55,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-14 03:49:55,547 INFO L87 Difference]: Start difference. First operand 83 states and 90 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:49:56,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:49:56,065 INFO L93 Difference]: Finished difference Result 89 states and 98 transitions. [2024-11-14 03:49:56,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 03:49:56,066 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2024-11-14 03:49:56,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:49:56,067 INFO L225 Difference]: With dead ends: 89 [2024-11-14 03:49:56,067 INFO L226 Difference]: Without dead ends: 89 [2024-11-14 03:49:56,067 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-14 03:49:56,068 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 59 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:49:56,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 292 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 03:49:56,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-14 03:49:56,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2024-11-14 03:49:56,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 69 states have (on average 1.318840579710145) internal successors, (91), 82 states have internal predecessors, (91), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:49:56,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 97 transitions. [2024-11-14 03:49:56,073 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 97 transitions. Word has length 28 [2024-11-14 03:49:56,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:49:56,073 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 97 transitions. [2024-11-14 03:49:56,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:49:56,074 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 97 transitions. [2024-11-14 03:49:56,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-14 03:49:56,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:49:56,075 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:49:56,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 03:49:56,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:49:56,279 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:49:56,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:49:56,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1892299681, now seen corresponding path program 1 times [2024-11-14 03:49:56,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:49:56,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342247283] [2024-11-14 03:49:56,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:56,280 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:49:56,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:49:56,282 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:49:56,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2024-11-14 03:49:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:56,579 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-14 03:49:56,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:49:56,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 03:49:56,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 03:49:56,836 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:49:56,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-14 03:49:56,900 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 [2024-11-14 03:49:56,918 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 [2024-11-14 03:49:57,106 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-14 03:49:57,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-14 03:49:57,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-14 03:49:57,157 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 [2024-11-14 03:49:57,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 03:49:57,229 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:49:57,229 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:49:57,670 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_848 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_848) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (bvule (bvadd .cse0 (_ bv16 64)) (bvadd .cse0 (_ bv20 64))))) (forall ((v_ArrVal_849 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_848 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_848) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) (_ bv20 64)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_849) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))))) is different from false [2024-11-14 03:49:57,758 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (and (forall ((v_ArrVal_849 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_848 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_848) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) (_ bv20 64)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_849) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|)))) (forall ((v_ArrVal_848 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_848) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (bvule (bvadd .cse1 (_ bv16 64)) (bvadd .cse1 (_ bv20 64))))))) is different from false [2024-11-14 03:49:57,821 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:49:57,821 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 37 treesize of output 38 [2024-11-14 03:49:57,837 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:49:57,838 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 29 treesize of output 30 [2024-11-14 03:49:57,846 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 52 treesize of output 44 [2024-11-14 03:49:57,852 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 82 treesize of output 70 [2024-11-14 03:49:57,885 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 9 [2024-11-14 03:49:57,895 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 7 [2024-11-14 03:49:57,925 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:49:57,926 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 37 treesize of output 30 [2024-11-14 03:49:57,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2024-11-14 03:49:59,157 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:49:59,158 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:49:59,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342247283] [2024-11-14 03:49:59,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [342247283] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:49:59,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [517649263] [2024-11-14 03:49:59,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:59,158 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:49:59,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:49:59,163 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:49:59,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2024-11-14 03:49:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:59,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-14 03:49:59,776 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:49:59,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 03:49:59,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 03:49:59,938 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:49:59,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-14 03:49:59,967 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 [2024-11-14 03:49:59,975 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 [2024-11-14 03:50:00,076 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-14 03:50:00,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-14 03:50:00,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-14 03:50:00,125 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 [2024-11-14 03:50:00,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 03:50:00,157 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:50:00,157 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:50:00,295 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_915 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_916 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (_ bv20 64) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_916) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_915) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|)))) (forall ((v_ArrVal_916 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_916) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (bvule (bvadd (_ bv16 64) .cse0) (bvadd (_ bv20 64) .cse0))))) is different from false [2024-11-14 03:50:00,352 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (and (forall ((v_ArrVal_916 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_916) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (bvule (bvadd (_ bv16 64) .cse0) (bvadd (_ bv20 64) .cse0)))) (forall ((v_ArrVal_915 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_916 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (_ bv20 64) (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_916) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_915) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|)))))) is different from false [2024-11-14 03:50:00,406 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:50:00,407 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 37 treesize of output 38 [2024-11-14 03:50:00,421 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:50:00,422 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 29 treesize of output 30 [2024-11-14 03:50:00,428 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 52 treesize of output 44 [2024-11-14 03:50:00,433 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 82 treesize of output 70 [2024-11-14 03:50:00,442 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 9 [2024-11-14 03:50:00,446 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 9 treesize of output 7 [2024-11-14 03:50:00,489 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:50:00,489 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 37 treesize of output 30 [2024-11-14 03:50:00,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2024-11-14 03:50:01,277 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:50:01,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [517649263] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:50:01,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464890416] [2024-11-14 03:50:01,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:50:01,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:50:01,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:50:01,281 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:50:01,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-14 03:50:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:50:01,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-14 03:50:01,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:50:01,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 03:50:01,660 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:50:01,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-14 03:50:01,685 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 [2024-11-14 03:50:01,691 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 [2024-11-14 03:50:01,779 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-14 03:50:01,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-14 03:50:01,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-14 03:50:01,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-14 03:50:01,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 03:50:01,857 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:50:01,857 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:50:01,988 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_982 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_981 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (_ bv20 64) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_982) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_981) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|)))) (forall ((v_ArrVal_982 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_982) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (bvule (bvadd (_ bv16 64) .cse0) (bvadd (_ bv20 64) .cse0))))) is different from false [2024-11-14 03:50:02,040 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (and (forall ((v_ArrVal_982 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_982) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (bvule (bvadd .cse0 (_ bv16 64)) (bvadd .cse0 (_ bv20 64))))) (forall ((v_ArrVal_982 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_981 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_982) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) (_ bv20 64)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_981) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|)))))) is different from false [2024-11-14 03:50:02,091 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:50:02,091 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 37 treesize of output 30 [2024-11-14 03:50:02,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2024-11-14 03:50:02,140 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:50:02,140 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 37 treesize of output 38 [2024-11-14 03:50:02,159 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:50:02,159 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 29 treesize of output 30 [2024-11-14 03:50:02,169 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 03:50:02,181 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 27 treesize of output 19 [2024-11-14 03:50:02,189 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 03:50:02,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2024-11-14 03:50:03,016 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:50:03,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464890416] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:50:03,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 03:50:03,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12, 13, 12, 13] total 24 [2024-11-14 03:50:03,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722150062] [2024-11-14 03:50:03,017 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 03:50:03,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-14 03:50:03,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:50:03,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-14 03:50:03,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=305, Unknown=6, NotChecked=234, Total=600 [2024-11-14 03:50:03,019 INFO L87 Difference]: Start difference. First operand 87 states and 97 transitions. Second operand has 25 states, 24 states have (on average 2.125) internal successors, (51), 20 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 03:50:05,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:50:05,979 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2024-11-14 03:50:05,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 03:50:05,980 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.125) internal successors, (51), 20 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2024-11-14 03:50:05,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:50:05,981 INFO L225 Difference]: With dead ends: 88 [2024-11-14 03:50:05,981 INFO L226 Difference]: Without dead ends: 88 [2024-11-14 03:50:05,982 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 152 SyntacticMatches, 7 SemanticMatches, 29 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=92, Invalid=526, Unknown=6, NotChecked=306, Total=930 [2024-11-14 03:50:05,982 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 29 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 291 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:50:05,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 594 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 396 Invalid, 0 Unknown, 291 Unchecked, 2.1s Time] [2024-11-14 03:50:05,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-14 03:50:05,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2024-11-14 03:50:05,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 69 states have (on average 1.3043478260869565) internal successors, (90), 82 states have internal predecessors, (90), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:50:05,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 96 transitions. [2024-11-14 03:50:05,987 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 96 transitions. Word has length 31 [2024-11-14 03:50:05,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:50:05,988 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 96 transitions. [2024-11-14 03:50:05,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.125) internal successors, (51), 20 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 03:50:05,988 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 96 transitions. [2024-11-14 03:50:05,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-14 03:50:05,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:50:05,989 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:50:06,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2024-11-14 03:50:06,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-14 03:50:06,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 03:50:06,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:50:06,591 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:50:06,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:50:06,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1892299682, now seen corresponding path program 1 times [2024-11-14 03:50:06,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:50:06,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206420429] [2024-11-14 03:50:06,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:50:06,593 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:50:06,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:50:06,595 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:50:06,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2024-11-14 03:50:06,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:50:06,862 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-14 03:50:06,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:50:06,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 03:50:07,090 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-14 03:50:07,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-14 03:50:07,161 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 [2024-11-14 03:50:07,389 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-14 03:50:07,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2024-11-14 03:50:07,425 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 [2024-11-14 03:50:07,504 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:50:07,504 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:50:07,505 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:50:07,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206420429] [2024-11-14 03:50:07,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1206420429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:50:07,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:50:07,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-14 03:50:07,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14543132] [2024-11-14 03:50:07,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:50:07,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 03:50:07,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:50:07,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 03:50:07,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-14 03:50:07,506 INFO L87 Difference]: Start difference. First operand 87 states and 96 transitions. Second operand has 13 states, 12 states have (on average 2.25) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:50:08,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:50:08,454 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2024-11-14 03:50:08,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 03:50:08,455 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.25) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2024-11-14 03:50:08,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:50:08,456 INFO L225 Difference]: With dead ends: 87 [2024-11-14 03:50:08,456 INFO L226 Difference]: Without dead ends: 87 [2024-11-14 03:50:08,456 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-14 03:50:08,457 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 15 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 03:50:08,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 261 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 03:50:08,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-14 03:50:08,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-11-14 03:50:08,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 69 states have (on average 1.289855072463768) internal successors, (89), 82 states have internal predecessors, (89), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:50:08,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2024-11-14 03:50:08,461 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 31 [2024-11-14 03:50:08,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:50:08,462 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2024-11-14 03:50:08,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.25) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:50:08,462 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2024-11-14 03:50:08,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-14 03:50:08,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:50:08,463 INFO L215 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, 1, 1, 1, 1, 1, 1] [2024-11-14 03:50:08,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2024-11-14 03:50:08,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:50:08,664 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:50:08,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:50:08,664 INFO L85 PathProgramCache]: Analyzing trace with hash -119553935, now seen corresponding path program 1 times [2024-11-14 03:50:08,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:50:08,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699631755] [2024-11-14 03:50:08,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:50:08,665 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:50:08,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:50:08,667 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:50:08,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2024-11-14 03:50:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:50:08,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-14 03:50:08,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:50:09,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:50:09,254 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:50:09,585 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-14 03:50:09,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2024-11-14 03:50:09,623 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-11-14 03:50:09,623 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 20 treesize of output 12 [2024-11-14 03:50:09,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:50:09,662 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:50:09,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1699631755] [2024-11-14 03:50:09,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1699631755] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:50:09,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [958352944] [2024-11-14 03:50:09,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:50:09,662 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:50:09,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:50:09,665 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:50:09,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2024-11-14 03:50:10,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:50:10,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-14 03:50:10,084 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:50:10,897 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:50:10,897 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:50:11,041 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-14 03:50:11,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2024-11-14 03:50:11,061 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-11-14 03:50:11,062 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 20 treesize of output 12 [2024-11-14 03:50:11,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:50:11,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [958352944] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:50:11,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343273798] [2024-11-14 03:50:11,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:50:11,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:50:11,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:50:11,123 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:50:11,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-14 03:50:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:50:11,308 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-14 03:50:11,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:50:11,389 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 [2024-11-14 03:50:11,391 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 [2024-11-14 03:50:11,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:50:11,505 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:50:11,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:50:11,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343273798] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:50:11,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 03:50:11,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 15, 10, 11, 10] total 24 [2024-11-14 03:50:11,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760383447] [2024-11-14 03:50:11,815 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 03:50:11,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-14 03:50:11,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:50:11,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-14 03:50:11,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2024-11-14 03:50:11,817 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand has 24 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 23 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 03:50:13,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:50:13,820 INFO L93 Difference]: Finished difference Result 101 states and 116 transitions. [2024-11-14 03:50:13,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-14 03:50:13,821 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 23 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2024-11-14 03:50:13,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:50:13,822 INFO L225 Difference]: With dead ends: 101 [2024-11-14 03:50:13,822 INFO L226 Difference]: Without dead ends: 101 [2024-11-14 03:50:13,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=674, Unknown=0, NotChecked=0, Total=756 [2024-11-14 03:50:13,823 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 54 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-14 03:50:13,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 489 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-14 03:50:13,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-14 03:50:13,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2024-11-14 03:50:13,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 79 states have (on average 1.3164556962025316) internal successors, (104), 92 states have internal predecessors, (104), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:50:13,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 110 transitions. [2024-11-14 03:50:13,829 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 110 transitions. Word has length 31 [2024-11-14 03:50:13,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:50:13,829 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 110 transitions. [2024-11-14 03:50:13,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 23 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 03:50:13,830 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 110 transitions. [2024-11-14 03:50:13,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-14 03:50:13,830 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:50:13,830 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:50:13,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2024-11-14 03:50:14,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2024-11-14 03:50:14,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-14 03:50:14,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:50:14,432 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:50:14,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:50:14,432 INFO L85 PathProgramCache]: Analyzing trace with hash 588793862, now seen corresponding path program 1 times [2024-11-14 03:50:14,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:50:14,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771075070] [2024-11-14 03:50:14,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:50:14,432 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:50:14,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:50:14,435 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:50:14,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2024-11-14 03:50:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:50:14,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 03:50:14,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:50:15,159 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_destroy_~l#1.base_21| (_ BitVec 64))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_destroy_~l#1.base_21| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_destroy_~l#1.base_21|)))) is different from true [2024-11-14 03:50:15,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2024-11-14 03:50:15,175 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:50:15,632 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:50:15,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771075070] [2024-11-14 03:50:15,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1771075070] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:50:15,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2132518005] [2024-11-14 03:50:15,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:50:15,633 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:50:15,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:50:15,637 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:50:15,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2024-11-14 03:50:16,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:50:16,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-14 03:50:16,093 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:50:16,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:50:16,877 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:50:17,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2132518005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:50:17,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034828454] [2024-11-14 03:50:17,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:50:17,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:50:17,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:50:17,226 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:50:17,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-14 03:50:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:50:17,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 03:50:17,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:50:17,647 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_destroy_~l#1.base_27| (_ BitVec 64))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_destroy_~l#1.base_27| (_ bv0 1))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_destroy_~l#1.base_27|) (_ bv0 1)))) is different from true [2024-11-14 03:50:17,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2024-11-14 03:50:17,668 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:50:18,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034828454] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:50:18,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:50:18,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11] total 19 [2024-11-14 03:50:18,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683063524] [2024-11-14 03:50:18,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:50:18,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-14 03:50:18,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:50:18,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-14 03:50:18,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=300, Unknown=2, NotChecked=70, Total=420 [2024-11-14 03:50:18,045 INFO L87 Difference]: Start difference. First operand 97 states and 110 transitions. Second operand has 20 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 17 states have internal predecessors, (58), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:50:19,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:50:19,936 INFO L93 Difference]: Finished difference Result 104 states and 116 transitions. [2024-11-14 03:50:19,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 03:50:19,937 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 17 states have internal predecessors, (58), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2024-11-14 03:50:19,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:50:19,938 INFO L225 Difference]: With dead ends: 104 [2024-11-14 03:50:19,938 INFO L226 Difference]: Without dead ends: 87 [2024-11-14 03:50:19,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 137 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=85, Invalid=623, Unknown=2, NotChecked=102, Total=812 [2024-11-14 03:50:19,939 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 69 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 154 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-14 03:50:19,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 374 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 434 Invalid, 0 Unknown, 154 Unchecked, 1.6s Time] [2024-11-14 03:50:19,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-14 03:50:19,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-11-14 03:50:19,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 69 states have (on average 1.3478260869565217) internal successors, (93), 82 states have internal predecessors, (93), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:50:19,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 99 transitions. [2024-11-14 03:50:19,945 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 99 transitions. Word has length 32 [2024-11-14 03:50:19,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:50:19,946 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 99 transitions. [2024-11-14 03:50:19,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 17 states have internal predecessors, (58), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:50:19,946 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 99 transitions. [2024-11-14 03:50:19,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-14 03:50:19,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:50:19,947 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:50:19,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2024-11-14 03:50:20,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-14 03:50:20,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2024-11-14 03:50:20,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:50:20,549 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:50:20,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:50:20,549 INFO L85 PathProgramCache]: Analyzing trace with hash -2039622647, now seen corresponding path program 1 times [2024-11-14 03:50:20,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:50:20,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1628703997] [2024-11-14 03:50:20,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:50:20,550 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:50:20,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:50:20,552 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:50:20,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2024-11-14 03:50:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:50:20,830 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 03:50:20,832 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:50:20,945 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-14 03:50:20,945 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:50:21,007 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-14 03:50:21,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-14 03:50:21,062 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-14 03:50:21,063 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:50:21,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1628703997] [2024-11-14 03:50:21,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1628703997] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:50:21,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1067169721] [2024-11-14 03:50:21,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:50:21,063 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:50:21,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:50:21,065 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:50:21,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2024-11-14 03:50:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:50:21,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-14 03:50:21,578 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:50:21,753 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-14 03:50:21,753 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:50:21,928 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-14 03:50:21,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-14 03:50:21,980 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-14 03:50:21,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1067169721] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:50:21,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211878630] [2024-11-14 03:50:21,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:50:21,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:50:21,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:50:21,984 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:50:21,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-14 03:50:22,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:50:22,233 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 03:50:22,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:50:22,307 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-14 03:50:22,307 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:50:22,375 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-14 03:50:22,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-14 03:50:22,407 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-14 03:50:22,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211878630] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:50:22,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 03:50:22,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6, 6, 5, 5] total 7 [2024-11-14 03:50:22,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066363907] [2024-11-14 03:50:22,408 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 03:50:22,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 03:50:22,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:50:22,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 03:50:22,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:50:22,409 INFO L87 Difference]: Start difference. First operand 87 states and 99 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:50:22,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:50:22,959 INFO L93 Difference]: Finished difference Result 96 states and 111 transitions. [2024-11-14 03:50:22,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 03:50:22,960 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2024-11-14 03:50:22,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:50:22,961 INFO L225 Difference]: With dead ends: 96 [2024-11-14 03:50:22,961 INFO L226 Difference]: Without dead ends: 96 [2024-11-14 03:50:22,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:50:22,962 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 5 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:50:22,962 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 173 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 03:50:22,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-14 03:50:22,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2024-11-14 03:50:22,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 77 states have (on average 1.3376623376623376) internal successors, (103), 90 states have internal predecessors, (103), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:50:22,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 109 transitions. [2024-11-14 03:50:22,967 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 109 transitions. Word has length 41 [2024-11-14 03:50:22,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:50:22,968 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 109 transitions. [2024-11-14 03:50:22,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:50:22,968 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 109 transitions. [2024-11-14 03:50:22,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-14 03:50:22,969 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:50:22,969 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:50:22,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2024-11-14 03:50:23,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (35)] Ended with exit code 0 [2024-11-14 03:50:23,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-14 03:50:23,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:50:23,571 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:50:23,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:50:23,571 INFO L85 PathProgramCache]: Analyzing trace with hash -2039622646, now seen corresponding path program 1 times [2024-11-14 03:50:23,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:50:23,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326818979] [2024-11-14 03:50:23,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:50:23,572 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:50:23,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:50:23,574 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:50:23,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2024-11-14 03:50:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:50:23,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 03:50:23,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:50:24,237 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:50:24,238 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:50:24,846 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:50:24,847 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 22 treesize of output 26 [2024-11-14 03:50:25,652 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:50:25,652 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:50:25,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326818979] [2024-11-14 03:50:25,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326818979] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:50:25,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1832105503] [2024-11-14 03:50:25,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:50:25,653 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:50:25,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:50:25,655 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:50:25,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2024-11-14 03:50:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:50:26,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-14 03:50:26,224 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:50:26,494 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:50:26,494 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:50:26,647 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:50:26,647 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 22 treesize of output 26 [2024-11-14 03:50:27,252 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:50:27,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1832105503] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:50:27,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248319199] [2024-11-14 03:50:27,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:50:27,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:50:27,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:50:27,255 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:50:27,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-14 03:50:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:50:27,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 03:50:27,539 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:50:27,861 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:50:27,862 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:50:28,202 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:50:28,203 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 22 treesize of output 26 [2024-11-14 03:50:28,471 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:50:28,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248319199] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:50:28,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 03:50:28,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 15 [2024-11-14 03:50:28,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116647964] [2024-11-14 03:50:28,472 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 03:50:28,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-14 03:50:28,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:50:28,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-14 03:50:28,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-14 03:50:28,473 INFO L87 Difference]: Start difference. First operand 95 states and 109 transitions. Second operand has 16 states, 15 states have (on average 5.866666666666666) internal successors, (88), 14 states have internal predecessors, (88), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 03:50:30,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:50:30,528 INFO L93 Difference]: Finished difference Result 96 states and 110 transitions. [2024-11-14 03:50:30,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 03:50:30,533 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.866666666666666) internal successors, (88), 14 states have internal predecessors, (88), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 41 [2024-11-14 03:50:30,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:50:30,534 INFO L225 Difference]: With dead ends: 96 [2024-11-14 03:50:30,534 INFO L226 Difference]: Without dead ends: 96 [2024-11-14 03:50:30,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 225 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-11-14 03:50:30,536 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 3 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:50:30,536 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 356 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-14 03:50:30,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-14 03:50:30,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2024-11-14 03:50:30,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 77 states have (on average 1.3246753246753247) internal successors, (102), 90 states have internal predecessors, (102), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:50:30,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 108 transitions. [2024-11-14 03:50:30,541 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 108 transitions. Word has length 41 [2024-11-14 03:50:30,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:50:30,541 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 108 transitions. [2024-11-14 03:50:30,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.866666666666666) internal successors, (88), 14 states have internal predecessors, (88), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 03:50:30,541 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 108 transitions. [2024-11-14 03:50:30,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-14 03:50:30,542 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:50:30,542 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:50:30,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (38)] Ended with exit code 0 [2024-11-14 03:50:30,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-14 03:50:30,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Ended with exit code 0 [2024-11-14 03:50:31,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:50:31,143 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:50:31,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:50:31,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1994525768, now seen corresponding path program 1 times [2024-11-14 03:50:31,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:50:31,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [825056999] [2024-11-14 03:50:31,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:50:31,144 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:50:31,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:50:31,146 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:50:31,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2024-11-14 03:50:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:50:31,658 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-14 03:50:31,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:50:31,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 03:50:31,890 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-14 03:50:31,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-14 03:50:31,951 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 [2024-11-14 03:50:32,126 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-14 03:50:32,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2024-11-14 03:50:32,288 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-14 03:50:32,288 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 36 treesize of output 35 [2024-11-14 03:50:32,327 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 [2024-11-14 03:50:32,716 INFO L349 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2024-11-14 03:50:32,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 36 [2024-11-14 03:50:32,731 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:50:32,731 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:50:36,061 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1699 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_1699) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))))) is different from false [2024-11-14 03:50:36,079 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1699 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_1699) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))))) is different from false [2024-11-14 03:50:36,098 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1699 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1698 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_1698))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_1699)) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|)) (_ bv1 1)))) is different from false [2024-11-14 03:50:36,114 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1699 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1698 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_1698))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_1699)) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|)) (_ bv1 1)))) is different from false [2024-11-14 03:50:36,141 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:50:36,141 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 40 treesize of output 33 [2024-11-14 03:50:36,147 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 268 treesize of output 232 [2024-11-14 03:50:36,159 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 75 treesize of output 67 [2024-11-14 03:50:36,165 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 67 treesize of output 63 [2024-11-14 03:50:39,053 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:50:39,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [825056999] [2024-11-14 03:50:39,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [825056999] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:50:39,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [720465219] [2024-11-14 03:50:39,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:50:39,055 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:50:39,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:50:39,057 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:50:39,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2024-11-14 03:50:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:50:39,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-14 03:50:39,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:50:39,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 03:50:40,146 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-14 03:50:40,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-14 03:50:40,175 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 [2024-11-14 03:50:40,279 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-14 03:50:40,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2024-11-14 03:50:40,416 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-14 03:50:40,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2024-11-14 03:50:40,451 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 [2024-11-14 03:50:40,692 INFO L349 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2024-11-14 03:50:40,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 36 [2024-11-14 03:50:40,704 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:50:40,705 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:50:42,887 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1793 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_1793) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))))) is different from false [2024-11-14 03:50:42,904 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1793 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_1793) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))))) is different from false [2024-11-14 03:50:42,923 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1792 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1793 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_1792))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_1793)) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))))) is different from false [2024-11-14 03:50:42,938 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1792 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1793 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_1792))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_1793)) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))))) is different from false [2024-11-14 03:50:42,960 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:50:42,960 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 40 treesize of output 33 [2024-11-14 03:50:42,964 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 152 treesize of output 128 [2024-11-14 03:50:42,984 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 13 [2024-11-14 03:50:42,989 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 30 treesize of output 24 [2024-11-14 03:50:43,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [720465219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:50:43,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763581647] [2024-11-14 03:50:43,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:50:43,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:50:43,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:50:43,203 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:50:43,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-14 03:50:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:50:43,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-14 03:50:43,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:50:43,767 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:50:43,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-14 03:50:43,880 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 [2024-11-14 03:50:44,069 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-14 03:50:44,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2024-11-14 03:50:44,224 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-14 03:50:44,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2024-11-14 03:50:44,247 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 [2024-11-14 03:50:44,350 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-14 03:50:44,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-14 03:50:44,354 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 03:50:44,354 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:50:47,890 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1885 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_1885) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))))) is different from false [2024-11-14 03:50:47,913 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1885 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_1885) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))))) is different from false [2024-11-14 03:50:47,939 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1884 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1885 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_1884))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_1885)) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))))) is different from false [2024-11-14 03:50:47,960 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1884 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1885 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_1884))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_1885)) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))))) is different from false [2024-11-14 03:50:47,991 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:50:47,991 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 40 treesize of output 33 [2024-11-14 03:50:47,997 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 268 treesize of output 232 [2024-11-14 03:50:48,008 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 75 treesize of output 65 [2024-11-14 03:50:48,017 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 14 [2024-11-14 03:50:48,493 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:50:48,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 54 treesize of output 144 [2024-11-14 03:50:51,436 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:50:51,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 62 treesize of output 152 [2024-11-14 03:50:53,981 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 03:50:53,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763581647] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:50:53,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2024-11-14 03:50:53,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15, 16] total 32 [2024-11-14 03:50:53,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409099705] [2024-11-14 03:50:53,981 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2024-11-14 03:50:53,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-14 03:50:53,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:50:53,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-14 03:50:53,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=772, Unknown=13, NotChecked=804, Total=1722 [2024-11-14 03:50:53,983 INFO L87 Difference]: Start difference. First operand 95 states and 108 transitions. Second operand has 33 states, 32 states have (on average 2.53125) internal successors, (81), 28 states have internal predecessors, (81), 3 states have call successors, (4), 3 states have call predecessors, (4), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-14 03:50:55,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:50:55,797 INFO L93 Difference]: Finished difference Result 93 states and 106 transitions. [2024-11-14 03:50:55,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-14 03:50:55,798 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.53125) internal successors, (81), 28 states have internal predecessors, (81), 3 states have call successors, (4), 3 states have call predecessors, (4), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) Word has length 45 [2024-11-14 03:50:55,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:50:55,799 INFO L225 Difference]: With dead ends: 93 [2024-11-14 03:50:55,799 INFO L226 Difference]: Without dead ends: 93 [2024-11-14 03:50:55,799 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 168 SyntacticMatches, 18 SemanticMatches, 40 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=133, Invalid=772, Unknown=13, NotChecked=804, Total=1722 [2024-11-14 03:50:55,800 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 5 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 173 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-14 03:50:55,800 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 454 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 402 Invalid, 0 Unknown, 173 Unchecked, 1.7s Time] [2024-11-14 03:50:55,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-14 03:50:55,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-14 03:50:55,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 77 states have (on average 1.2987012987012987) internal successors, (100), 88 states have internal predecessors, (100), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:50:55,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 106 transitions. [2024-11-14 03:50:55,805 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 106 transitions. Word has length 45 [2024-11-14 03:50:55,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:50:55,806 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 106 transitions. [2024-11-14 03:50:55,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.53125) internal successors, (81), 28 states have internal predecessors, (81), 3 states have call successors, (4), 3 states have call predecessors, (4), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-14 03:50:55,806 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 106 transitions. [2024-11-14 03:50:55,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-14 03:50:55,808 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:50:55,808 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:50:55,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (41)] Ended with exit code 0 [2024-11-14 03:50:56,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-14 03:50:56,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Ended with exit code 0 [2024-11-14 03:50:56,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:50:56,409 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:50:56,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:50:56,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1994525769, now seen corresponding path program 1 times [2024-11-14 03:50:56,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:50:56,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [115963944] [2024-11-14 03:50:56,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:50:56,411 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:50:56,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:50:56,415 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:50:56,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2024-11-14 03:50:56,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:50:56,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-14 03:50:56,982 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:50:56,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 03:50:57,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 03:50:57,394 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-14 03:50:57,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-14 03:50:57,521 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 [2024-11-14 03:50:57,541 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 [2024-11-14 03:50:57,832 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-14 03:50:57,832 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 54 [2024-11-14 03:50:57,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-14 03:50:58,161 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-14 03:50:58,161 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 54 [2024-11-14 03:50:58,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-14 03:50:58,287 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 36 treesize of output 20 [2024-11-14 03:50:58,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 03:50:58,700 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base (_ BitVec 64))) (and (= (store |c_old(#length)| alloc_and_zero_~pi~0.base (select |c_#length| alloc_and_zero_~pi~0.base)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| alloc_and_zero_~pi~0.base)))) is different from true [2024-11-14 03:50:58,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:50:58,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-14 03:50:58,870 INFO L349 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2024-11-14 03:50:58,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2024-11-14 03:50:58,964 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 12 not checked. [2024-11-14 03:50:58,964 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:50:59,780 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:50:59,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [115963944] [2024-11-14 03:50:59,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [115963944] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:50:59,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [237784503] [2024-11-14 03:50:59,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:50:59,781 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:50:59,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:50:59,783 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:50:59,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (44)] Waiting until timeout for monitored process [2024-11-14 03:51:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:51:00,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-14 03:51:00,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:51:00,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 03:51:00,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 03:51:00,953 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-14 03:51:00,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-14 03:51:01,021 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 [2024-11-14 03:51:01,041 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 [2024-11-14 03:51:01,165 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-14 03:51:01,165 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 54 [2024-11-14 03:51:01,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-14 03:51:01,374 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-14 03:51:01,374 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 54 [2024-11-14 03:51:01,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-14 03:51:01,468 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 36 treesize of output 20 [2024-11-14 03:51:01,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 03:51:01,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:51:01,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-14 03:51:01,805 INFO L349 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2024-11-14 03:51:01,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2024-11-14 03:51:01,812 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 12 not checked. [2024-11-14 03:51:01,812 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:51:04,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [237784503] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:51:04,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144048828] [2024-11-14 03:51:04,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:51:04,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:51:04,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:51:04,297 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:51:04,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-14 03:51:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:51:04,676 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-14 03:51:04,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:51:04,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 03:51:05,151 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:51:05,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-14 03:51:05,288 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 [2024-11-14 03:51:05,314 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 [2024-11-14 03:51:05,629 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-14 03:51:05,630 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 54 [2024-11-14 03:51:05,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-14 03:51:05,914 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-14 03:51:05,914 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 54 [2024-11-14 03:51:05,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-14 03:51:05,988 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 36 treesize of output 20 [2024-11-14 03:51:06,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 03:51:06,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:51:06,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-14 03:51:06,391 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:51:06,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-14 03:51:06,401 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 11 not checked. [2024-11-14 03:51:06,402 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:51:06,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144048828] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:51:06,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:51:06,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 18] total 26 [2024-11-14 03:51:06,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143567433] [2024-11-14 03:51:06,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:51:06,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-14 03:51:06,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:51:06,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-14 03:51:06,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=669, Unknown=1, NotChecked=52, Total=812 [2024-11-14 03:51:06,883 INFO L87 Difference]: Start difference. First operand 93 states and 106 transitions. Second operand has 27 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 21 states have internal predecessors, (60), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-14 03:51:09,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:51:09,511 INFO L93 Difference]: Finished difference Result 89 states and 102 transitions. [2024-11-14 03:51:09,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-14 03:51:09,513 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 21 states have internal predecessors, (60), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 45 [2024-11-14 03:51:09,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:51:09,513 INFO L225 Difference]: With dead ends: 89 [2024-11-14 03:51:09,513 INFO L226 Difference]: Without dead ends: 89 [2024-11-14 03:51:09,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 109 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=147, Invalid=978, Unknown=1, NotChecked=64, Total=1190 [2024-11-14 03:51:09,515 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 26 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-14 03:51:09,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 416 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 433 Invalid, 0 Unknown, 61 Unchecked, 1.9s Time] [2024-11-14 03:51:09,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-14 03:51:09,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-14 03:51:09,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 77 states have (on average 1.2467532467532467) internal successors, (96), 84 states have internal predecessors, (96), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:51:09,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 102 transitions. [2024-11-14 03:51:09,518 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 102 transitions. Word has length 45 [2024-11-14 03:51:09,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:51:09,518 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 102 transitions. [2024-11-14 03:51:09,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 21 states have internal predecessors, (60), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-14 03:51:09,519 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 102 transitions. [2024-11-14 03:51:09,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-14 03:51:09,519 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:51:09,519 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:51:09,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-11-14 03:51:09,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (44)] Forceful destruction successful, exit code 0 [2024-11-14 03:51:09,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Ended with exit code 0 [2024-11-14 03:51:10,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:51:10,121 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:51:10,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:51:10,121 INFO L85 PathProgramCache]: Analyzing trace with hash 871809860, now seen corresponding path program 1 times [2024-11-14 03:51:10,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:51:10,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [458721646] [2024-11-14 03:51:10,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:51:10,122 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:51:10,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:51:10,124 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:51:10,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2024-11-14 03:51:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:51:10,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-14 03:51:10,550 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:51:10,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 03:51:10,964 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-14 03:51:10,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-14 03:51:11,097 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 [2024-11-14 03:51:11,417 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-14 03:51:11,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2024-11-14 03:51:11,631 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-14 03:51:11,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2024-11-14 03:51:12,022 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 [2024-11-14 03:51:12,264 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:51:12,264 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:51:13,021 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2250 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_2251 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_2250))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_2251)) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))))) is different from false [2024-11-14 03:51:13,041 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2250 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_2251 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_2250))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_2251)) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))))) is different from false [2024-11-14 03:51:13,075 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:51:13,075 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 40 treesize of output 33 [2024-11-14 03:51:13,115 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:51:13,115 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 268 treesize of output 243 [2024-11-14 03:51:13,133 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 187 treesize of output 179 [2024-11-14 03:51:13,175 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:51:13,176 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 179 treesize of output 175 [2024-11-14 03:51:17,438 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:51:17,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [458721646] [2024-11-14 03:51:17,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [458721646] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:51:17,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [577551691] [2024-11-14 03:51:17,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:51:17,439 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:51:17,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:51:17,442 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:51:17,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (47)] Waiting until timeout for monitored process [2024-11-14 03:51:18,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:51:18,307 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-14 03:51:18,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:51:18,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 03:51:19,100 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-14 03:51:19,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-14 03:51:19,319 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 [2024-11-14 03:51:19,901 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-14 03:51:19,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2024-11-14 03:51:20,250 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-14 03:51:20,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2024-11-14 03:51:20,956 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 [2024-11-14 03:51:21,102 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:51:21,103 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:51:21,386 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2320 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_2251 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_2320))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_2251)) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)) (_ bv1 1)))) is different from false [2024-11-14 03:51:21,411 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2320 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_2251 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_2320))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_2251)) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))))) is different from false [2024-11-14 03:51:21,438 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:51:21,438 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 40 treesize of output 33 [2024-11-14 03:51:21,473 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:51:21,473 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 152 treesize of output 139 [2024-11-14 03:51:21,486 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 88 treesize of output 84 [2024-11-14 03:51:21,523 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:51:21,524 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 84 treesize of output 82 [2024-11-14 03:51:25,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [577551691] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:51:25,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164069820] [2024-11-14 03:51:25,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:51:25,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:51:25,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:51:25,443 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:51:25,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-14 03:51:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:51:25,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-14 03:51:25,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:51:26,560 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:51:26,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-14 03:51:26,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-14 03:51:27,230 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-14 03:51:27,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2024-11-14 03:51:27,518 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-14 03:51:27,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2024-11-14 03:51:28,105 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 [2024-11-14 03:51:28,125 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:51:28,126 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:51:28,400 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2388 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_2251 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_2388))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_2251)) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))))) is different from false [2024-11-14 03:51:28,420 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2388 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_2251 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_2388))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_2251)) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))))) is different from false [2024-11-14 03:51:28,447 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:51:28,447 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 40 treesize of output 33 [2024-11-14 03:51:28,485 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:51:28,485 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 152 treesize of output 139 [2024-11-14 03:51:28,498 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 88 treesize of output 84 [2024-11-14 03:51:28,537 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:51:28,537 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 84 treesize of output 82 [2024-11-14 03:51:31,798 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:51:31,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 131 treesize of output 473 [2024-11-14 03:51:34,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164069820] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:51:34,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:51:34,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 18] total 40 [2024-11-14 03:51:34,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238052727] [2024-11-14 03:51:34,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:51:34,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-14 03:51:34,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:51:34,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-14 03:51:34,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=2122, Unknown=28, NotChecked=594, Total=2970 [2024-11-14 03:51:34,242 INFO L87 Difference]: Start difference. First operand 89 states and 102 transitions. Second operand has 41 states, 40 states have (on average 2.5) internal successors, (100), 35 states have internal predecessors, (100), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 03:51:37,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:51:37,643 INFO L93 Difference]: Finished difference Result 94 states and 110 transitions. [2024-11-14 03:51:37,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-14 03:51:37,644 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.5) internal successors, (100), 35 states have internal predecessors, (100), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 45 [2024-11-14 03:51:37,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:51:37,645 INFO L225 Difference]: With dead ends: 94 [2024-11-14 03:51:37,645 INFO L226 Difference]: Without dead ends: 94 [2024-11-14 03:51:37,645 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 143 SyntacticMatches, 6 SemanticMatches, 56 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1028 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=257, Invalid=2391, Unknown=28, NotChecked=630, Total=3306 [2024-11-14 03:51:37,646 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 12 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:51:37,647 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 644 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-14 03:51:37,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-14 03:51:37,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2024-11-14 03:51:37,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 81 states have (on average 1.2592592592592593) internal successors, (102), 88 states have internal predecessors, (102), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:51:37,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 108 transitions. [2024-11-14 03:51:37,651 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 108 transitions. Word has length 45 [2024-11-14 03:51:37,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:51:37,651 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 108 transitions. [2024-11-14 03:51:37,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.5) internal successors, (100), 35 states have internal predecessors, (100), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 03:51:37,652 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 108 transitions. [2024-11-14 03:51:37,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-14 03:51:37,652 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:51:37,653 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:51:37,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (47)] Ended with exit code 0 [2024-11-14 03:51:37,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-11-14 03:51:38,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Ended with exit code 0 [2024-11-14 03:51:38,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:51:38,254 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-14 03:51:38,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:51:38,254 INFO L85 PathProgramCache]: Analyzing trace with hash 871809861, now seen corresponding path program 1 times [2024-11-14 03:51:38,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:51:38,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572605085] [2024-11-14 03:51:38,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:51:38,255 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:51:38,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:51:38,257 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:51:38,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2024-11-14 03:51:38,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:51:38,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-14 03:51:38,716 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:51:38,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 03:51:38,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 03:51:39,185 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:51:39,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-14 03:51:39,308 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 [2024-11-14 03:51:39,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-14 03:51:39,721 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-14 03:51:39,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-14 03:51:39,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-14 03:51:39,985 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-14 03:51:39,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-14 03:51:40,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-14 03:51:40,495 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 [2024-11-14 03:51:40,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 03:51:40,720 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:51:40,721 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:51:42,441 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2462 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_2461 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (_ bv8 64) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_2461) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_2462) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)))) (forall ((v_ArrVal_2461 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_2461) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))) (bvule .cse0 (bvadd (_ bv8 64) .cse0))))) is different from false [2024-11-14 03:51:43,358 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2459 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_2462 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_2461 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_2460 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_2459))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (bvule (bvadd (_ bv8 64) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_2460) .cse0 v_ArrVal_2461) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)) (select |c_#length| (select (select (store .cse1 .cse0 v_ArrVal_2462) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)))))) (forall ((v_ArrVal_2459 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_2461 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_2460 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse2 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_2460) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_2459) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_2461) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))) (bvule .cse2 (bvadd (_ bv8 64) .cse2))))) is different from false [2024-11-14 03:51:43,426 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (and (forall ((v_ArrVal_2459 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_2461 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_2460 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_2460) (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_2459) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_2461) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))) (bvule .cse0 (bvadd .cse0 (_ bv8 64))))) (forall ((v_ArrVal_2459 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_2462 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_2461 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_2460 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_2459))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_2460) .cse2 v_ArrVal_2461) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|) (_ bv8 64)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_2462) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)))))))) is different from false [2024-11-14 03:51:43,499 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:51:43,499 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 73 treesize of output 74 [2024-11-14 03:51:43,521 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:51:43,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 50 [2024-11-14 03:51:43,572 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:51:43,573 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 632 treesize of output 567 [2024-11-14 03:51:43,690 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:51:43,691 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 1127 treesize of output 1070 [2024-11-14 03:51:43,735 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 547 treesize of output 523 [2024-11-14 03:51:43,755 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 523 treesize of output 515 [2024-11-14 03:51:43,782 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 515 treesize of output 491 [2024-11-14 03:51:43,866 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:51:43,866 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 491 treesize of output 447 [2024-11-14 03:51:48,242 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:51:48,242 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 71 treesize of output 64 [2024-11-14 03:51:48,268 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:51:48,268 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 55 treesize of output 48 [2024-11-14 03:51:48,285 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 80 treesize of output 68 [2024-11-14 03:51:48,354 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:51:48,355 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 128 treesize of output 119 [2024-11-14 03:51:48,392 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 74 treesize of output 66 [2024-11-14 03:51:48,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 84 [2024-11-14 03:51:48,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 54 [2024-11-14 03:51:49,541 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:51:49,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572605085] [2024-11-14 03:51:49,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572605085] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:51:49,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [59739086] [2024-11-14 03:51:49,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:51:49,542 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:51:49,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:51:49,546 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:51:49,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bf01b4-91ee-42fd-8d0b-6108a2e05c67/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (50)] Waiting until timeout for monitored process [2024-11-14 03:51:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:51:50,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-14 03:51:50,456 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:51:50,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 03:51:51,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 03:51:51,441 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:51:51,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-14 03:51:51,702 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 [2024-11-14 03:51:51,719 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 [2024-11-14 03:51:52,392 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-14 03:51:52,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-14 03:51:52,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-14 03:51:52,824 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-14 03:51:52,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-14 03:51:52,840 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 24 treesize of output 11 [2024-11-14 03:51:53,725 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 [2024-11-14 03:51:53,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 03:51:53,772 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:51:53,772 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:51:54,074 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2536 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_2535 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_2536) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|) (_ bv8 64)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_2535) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)))) (forall ((v_ArrVal_2536 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_2536) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))) (bvule .cse0 (bvadd .cse0 (_ bv8 64)))))) is different from false [2024-11-14 03:51:54,150 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (and (forall ((v_ArrVal_2536 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_2535 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_2536) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|) (_ bv8 64)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_2535) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)))) (forall ((v_ArrVal_2536 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_2536) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))) (bvule .cse1 (bvadd .cse1 (_ bv8 64))))))) is different from false [2024-11-14 03:51:54,531 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2536 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_2533 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_2534 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_2533) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_2534) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_2536) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))) (bvule .cse0 (bvadd (_ bv8 64) .cse0)))) (forall ((v_ArrVal_2536 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_2533 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_2535 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_2534 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_2534))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (bvule (bvadd (_ bv8 64) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_2533) .cse1 v_ArrVal_2536) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_2535) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))))))) is different from false [2024-11-14 03:51:55,403 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (and (forall ((v_ArrVal_2536 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_2533 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_2534 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_2533) (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_2534) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_2536) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))) (bvule .cse0 (bvadd (_ bv8 64) .cse0)))) (forall ((v_ArrVal_2536 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_2533 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_2535 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_2534 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_2534))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (bvule (bvadd (_ bv8 64) (select (select (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_2533) .cse2 v_ArrVal_2536) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_2535) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)))))))) is different from false [2024-11-14 03:51:55,498 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:51:55,498 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 73 treesize of output 74 [2024-11-14 03:51:55,523 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:51:55,523 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 65 treesize of output 50 [2024-11-14 03:51:55,596 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:51:55,596 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 632 treesize of output 567 [2024-11-14 03:51:55,691 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:51:55,692 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 1127 treesize of output 1070 [2024-11-14 03:51:55,735 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 547 treesize of output 523 [2024-11-14 03:51:55,753 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 523 treesize of output 499 [2024-11-14 03:51:55,768 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 499 treesize of output 491 [2024-11-14 03:51:55,836 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:51:55,836 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 491 treesize of output 447