./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/lockfree-3.3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/lockfree-3.3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 32bit --witnessprinter.graph.data.programhash 1db117ae3c729419255b5da4a7f4ecd64b2d99a167d11f22266a773c4ff13cdb --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:46:04,816 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:46:04,889 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-14 05:46:04,900 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:46:04,901 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:46:04,928 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:46:04,928 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:46:04,928 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:46:04,929 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:46:04,929 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:46:04,929 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:46:04,929 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:46:04,930 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:46:04,930 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:46:04,930 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:46:04,930 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:46:04,930 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:46:04,930 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:46:04,930 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:46:04,931 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:46:04,931 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:46:04,931 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:46:04,931 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 05:46:04,932 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 05:46:04,932 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:46:04,932 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:46:04,932 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:46:04,932 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:46:04,933 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:46:04,933 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 05:46:04,933 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 05:46:04,933 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 05:46:04,933 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:46:04,933 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 05:46:04,934 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:46:04,934 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 05:46:04,934 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:46:04,934 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:46:04,934 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:46:04,934 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:46:04,935 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:46:04,935 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:46:04,935 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:46:04,935 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:46:04,935 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:46:04,935 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:46:04,935 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:46:04,935 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:46:04,936 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:46:04,936 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_98e1f814-1550-4967-875a-623f48c46852/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1db117ae3c729419255b5da4a7f4ecd64b2d99a167d11f22266a773c4ff13cdb [2024-11-14 05:46:05,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:46:05,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:46:05,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:46:05,306 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:46:05,307 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:46:05,308 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/memsafety/lockfree-3.3.i Unable to find full path for "g++" [2024-11-14 05:46:07,219 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:46:07,599 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:46:07,600 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/sv-benchmarks/c/memsafety/lockfree-3.3.i [2024-11-14 05:46:07,614 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/data/e637d7f5e/5a8b20596d72410997e56aa29ac3332a/FLAG5adbcc30e [2024-11-14 05:46:07,811 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/data/e637d7f5e/5a8b20596d72410997e56aa29ac3332a [2024-11-14 05:46:07,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:46:07,819 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:46:07,821 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:46:07,821 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:46:07,830 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:46:07,832 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:46:07" (1/1) ... [2024-11-14 05:46:07,834 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1febe734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:07, skipping insertion in model container [2024-11-14 05:46:07,837 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:46:07" (1/1) ... [2024-11-14 05:46:07,883 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:46:08,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:46:08,287 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:46:08,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:46:08,375 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:46:08,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:08 WrapperNode [2024-11-14 05:46:08,376 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:46:08,377 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:46:08,377 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:46:08,378 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:46:08,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:08" (1/1) ... [2024-11-14 05:46:08,397 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:08" (1/1) ... [2024-11-14 05:46:08,420 INFO L138 Inliner]: procedures = 125, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 132 [2024-11-14 05:46:08,420 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:46:08,421 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:46:08,421 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:46:08,421 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:46:08,427 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:08" (1/1) ... [2024-11-14 05:46:08,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:08" (1/1) ... [2024-11-14 05:46:08,431 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:08" (1/1) ... [2024-11-14 05:46:08,431 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:08" (1/1) ... [2024-11-14 05:46:08,439 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:08" (1/1) ... [2024-11-14 05:46:08,443 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:08" (1/1) ... [2024-11-14 05:46:08,445 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:08" (1/1) ... [2024-11-14 05:46:08,446 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:08" (1/1) ... [2024-11-14 05:46:08,448 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:46:08,449 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:46:08,450 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:46:08,450 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:46:08,451 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:08" (1/1) ... [2024-11-14 05:46:08,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:46:08,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:46:08,495 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:46:08,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:46:08,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 05:46:08,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 05:46:08,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 05:46:08,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:46:08,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 05:46:08,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 05:46:08,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 05:46:08,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 05:46:08,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:46:08,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:46:08,667 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:46:08,669 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:46:09,037 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2024-11-14 05:46:09,037 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:46:09,148 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:46:09,148 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-14 05:46:09,149 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:46:09 BoogieIcfgContainer [2024-11-14 05:46:09,149 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:46:09,152 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:46:09,152 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:46:09,157 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:46:09,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:46:07" (1/3) ... [2024-11-14 05:46:09,158 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a61ab17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:46:09, skipping insertion in model container [2024-11-14 05:46:09,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:08" (2/3) ... [2024-11-14 05:46:09,159 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a61ab17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:46:09, skipping insertion in model container [2024-11-14 05:46:09,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:46:09" (3/3) ... [2024-11-14 05:46:09,160 INFO L112 eAbstractionObserver]: Analyzing ICFG lockfree-3.3.i [2024-11-14 05:46:09,179 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:46:09,180 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG lockfree-3.3.i that has 1 procedures, 49 locations, 1 initial locations, 2 loop locations, and 20 error locations. [2024-11-14 05:46:09,239 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:46:09,257 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;@251b8962, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:46:09,258 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-14 05:46:09,262 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 48 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:09,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 05:46:09,275 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:46:09,276 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 05:46:09,276 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:46:09,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:46:09,284 INFO L85 PathProgramCache]: Analyzing trace with hash 5909994, now seen corresponding path program 1 times [2024-11-14 05:46:09,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:46:09,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822445087] [2024-11-14 05:46:09,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:46:09,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:46:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:46:09,433 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 05:46:09,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:46:09,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822445087] [2024-11-14 05:46:09,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822445087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:46:09,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:46:09,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:46:09,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256706386] [2024-11-14 05:46:09,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:46:09,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 05:46:09,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:46:09,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 05:46:09,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 05:46:09,483 INFO L87 Difference]: Start difference. First operand has 49 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 48 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:09,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:46:09,542 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2024-11-14 05:46:09,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 05:46:09,546 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-14 05:46:09,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:46:09,554 INFO L225 Difference]: With dead ends: 49 [2024-11-14 05:46:09,554 INFO L226 Difference]: Without dead ends: 48 [2024-11-14 05:46:09,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 05:46:09,562 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:46:09,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:46:09,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-14 05:46:09,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-11-14 05:46:09,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 28 states have (on average 2.107142857142857) internal successors, (59), 47 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:09,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2024-11-14 05:46:09,606 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 59 transitions. Word has length 4 [2024-11-14 05:46:09,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:46:09,607 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 59 transitions. [2024-11-14 05:46:09,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:09,607 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2024-11-14 05:46:09,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-14 05:46:09,607 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:46:09,607 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-14 05:46:09,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 05:46:09,608 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:46:09,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:46:09,609 INFO L85 PathProgramCache]: Analyzing trace with hash 184247569, now seen corresponding path program 1 times [2024-11-14 05:46:09,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:46:09,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855141995] [2024-11-14 05:46:09,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:46:09,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:46:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:46:09,684 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 05:46:09,684 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:46:09,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855141995] [2024-11-14 05:46:09,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855141995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:46:09,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:46:09,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-14 05:46:09,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456914236] [2024-11-14 05:46:09,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:46:09,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:46:09,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:46:09,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:46:09,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:46:09,687 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:09,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:46:09,865 INFO L93 Difference]: Finished difference Result 88 states and 110 transitions. [2024-11-14 05:46:09,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:46:09,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-14 05:46:09,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:46:09,868 INFO L225 Difference]: With dead ends: 88 [2024-11-14 05:46:09,869 INFO L226 Difference]: Without dead ends: 87 [2024-11-14 05:46:09,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:46:09,871 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 46 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:46:09,873 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 70 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:46:09,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-14 05:46:09,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 68. [2024-11-14 05:46:09,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 67 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:09,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 100 transitions. [2024-11-14 05:46:09,903 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 100 transitions. Word has length 5 [2024-11-14 05:46:09,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:46:09,903 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 100 transitions. [2024-11-14 05:46:09,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:09,905 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 100 transitions. [2024-11-14 05:46:09,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-14 05:46:09,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:46:09,906 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-14 05:46:09,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 05:46:09,907 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:46:09,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:46:09,908 INFO L85 PathProgramCache]: Analyzing trace with hash 184246377, now seen corresponding path program 1 times [2024-11-14 05:46:09,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:46:09,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971526881] [2024-11-14 05:46:09,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:46:09,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:46:09,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:46:10,023 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 05:46:10,023 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:46:10,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971526881] [2024-11-14 05:46:10,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971526881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:46:10,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:46:10,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:46:10,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597976689] [2024-11-14 05:46:10,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:46:10,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:46:10,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:46:10,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:46:10,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:46:10,025 INFO L87 Difference]: Start difference. First operand 68 states and 100 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:10,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:46:10,096 INFO L93 Difference]: Finished difference Result 124 states and 187 transitions. [2024-11-14 05:46:10,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:46:10,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-14 05:46:10,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:46:10,098 INFO L225 Difference]: With dead ends: 124 [2024-11-14 05:46:10,098 INFO L226 Difference]: Without dead ends: 123 [2024-11-14 05:46:10,099 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 05:46:10,100 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 45 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:46:10,100 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 86 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:46:10,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-14 05:46:10,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 105. [2024-11-14 05:46:10,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 85 states have (on average 2.0470588235294116) internal successors, (174), 104 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:10,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 174 transitions. [2024-11-14 05:46:10,110 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 174 transitions. Word has length 5 [2024-11-14 05:46:10,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:46:10,110 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 174 transitions. [2024-11-14 05:46:10,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:10,110 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 174 transitions. [2024-11-14 05:46:10,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-14 05:46:10,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:46:10,111 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-14 05:46:10,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 05:46:10,111 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:46:10,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:46:10,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1416612973, now seen corresponding path program 1 times [2024-11-14 05:46:10,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:46:10,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787324920] [2024-11-14 05:46:10,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:46:10,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:46:10,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:46:10,264 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 05:46:10,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:46:10,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787324920] [2024-11-14 05:46:10,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787324920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:46:10,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:46:10,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:46:10,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312118976] [2024-11-14 05:46:10,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:46:10,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:46:10,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:46:10,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:46:10,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:46:10,267 INFO L87 Difference]: Start difference. First operand 105 states and 174 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:10,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:46:10,427 INFO L93 Difference]: Finished difference Result 158 states and 247 transitions. [2024-11-14 05:46:10,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:46:10,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-14 05:46:10,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:46:10,429 INFO L225 Difference]: With dead ends: 158 [2024-11-14 05:46:10,432 INFO L226 Difference]: Without dead ends: 158 [2024-11-14 05:46:10,433 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 05:46:10,434 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 48 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:46:10,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 96 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:46:10,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-14 05:46:10,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 139. [2024-11-14 05:46:10,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 121 states have (on average 1.9421487603305785) internal successors, (235), 138 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:10,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 235 transitions. [2024-11-14 05:46:10,455 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 235 transitions. Word has length 6 [2024-11-14 05:46:10,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:46:10,455 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 235 transitions. [2024-11-14 05:46:10,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:10,456 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 235 transitions. [2024-11-14 05:46:10,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-14 05:46:10,456 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:46:10,456 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-14 05:46:10,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 05:46:10,459 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:46:10,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:46:10,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1416612974, now seen corresponding path program 1 times [2024-11-14 05:46:10,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:46:10,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861299139] [2024-11-14 05:46:10,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:46:10,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:46:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:46:10,652 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 05:46:10,652 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:46:10,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861299139] [2024-11-14 05:46:10,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861299139] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:46:10,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:46:10,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:46:10,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739997914] [2024-11-14 05:46:10,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:46:10,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:46:10,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:46:10,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:46:10,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:46:10,654 INFO L87 Difference]: Start difference. First operand 139 states and 235 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:10,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:46:10,762 INFO L93 Difference]: Finished difference Result 153 states and 238 transitions. [2024-11-14 05:46:10,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:46:10,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-14 05:46:10,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:46:10,764 INFO L225 Difference]: With dead ends: 153 [2024-11-14 05:46:10,764 INFO L226 Difference]: Without dead ends: 153 [2024-11-14 05:46:10,764 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 05:46:10,765 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 47 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:46:10,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 101 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:46:10,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-14 05:46:10,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 137. [2024-11-14 05:46:10,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 121 states have (on average 1.8760330578512396) internal successors, (227), 136 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:10,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 227 transitions. [2024-11-14 05:46:10,776 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 227 transitions. Word has length 6 [2024-11-14 05:46:10,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:46:10,776 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 227 transitions. [2024-11-14 05:46:10,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:10,776 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 227 transitions. [2024-11-14 05:46:10,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-14 05:46:10,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:46:10,777 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:46:10,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 05:46:10,777 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:46:10,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:46:10,777 INFO L85 PathProgramCache]: Analyzing trace with hash 965337206, now seen corresponding path program 1 times [2024-11-14 05:46:10,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:46:10,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556722131] [2024-11-14 05:46:10,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:46:10,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:46:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:46:10,878 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 05:46:10,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:46:10,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556722131] [2024-11-14 05:46:10,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556722131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:46:10,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:46:10,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:46:10,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346503066] [2024-11-14 05:46:10,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:46:10,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:46:10,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:46:10,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:46:10,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:46:10,883 INFO L87 Difference]: Start difference. First operand 137 states and 227 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:10,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:46:10,999 INFO L93 Difference]: Finished difference Result 192 states and 299 transitions. [2024-11-14 05:46:11,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:46:11,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-14 05:46:11,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:46:11,002 INFO L225 Difference]: With dead ends: 192 [2024-11-14 05:46:11,002 INFO L226 Difference]: Without dead ends: 192 [2024-11-14 05:46:11,007 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:46:11,007 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 40 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:46:11,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 160 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:46:11,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-14 05:46:11,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 167. [2024-11-14 05:46:11,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 151 states have (on average 1.8543046357615893) internal successors, (280), 166 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:11,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 280 transitions. [2024-11-14 05:46:11,030 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 280 transitions. Word has length 7 [2024-11-14 05:46:11,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:46:11,030 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 280 transitions. [2024-11-14 05:46:11,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:11,031 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 280 transitions. [2024-11-14 05:46:11,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-14 05:46:11,031 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:46:11,031 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:46:11,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 05:46:11,031 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:46:11,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:46:11,032 INFO L85 PathProgramCache]: Analyzing trace with hash -87961905, now seen corresponding path program 1 times [2024-11-14 05:46:11,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:46:11,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206930499] [2024-11-14 05:46:11,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:46:11,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:46:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:46:11,135 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 05:46:11,135 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:46:11,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206930499] [2024-11-14 05:46:11,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206930499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:46:11,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:46:11,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:46:11,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841444947] [2024-11-14 05:46:11,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:46:11,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:46:11,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:46:11,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:46:11,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:46:11,137 INFO L87 Difference]: Start difference. First operand 167 states and 280 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:11,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:46:11,202 INFO L93 Difference]: Finished difference Result 275 states and 435 transitions. [2024-11-14 05:46:11,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:46:11,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-14 05:46:11,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:46:11,207 INFO L225 Difference]: With dead ends: 275 [2024-11-14 05:46:11,207 INFO L226 Difference]: Without dead ends: 275 [2024-11-14 05:46:11,207 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:46:11,208 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 32 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:46:11,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 120 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:46:11,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-11-14 05:46:11,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 257. [2024-11-14 05:46:11,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 241 states have (on average 1.7468879668049793) internal successors, (421), 256 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:11,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 421 transitions. [2024-11-14 05:46:11,225 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 421 transitions. Word has length 8 [2024-11-14 05:46:11,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:46:11,225 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 421 transitions. [2024-11-14 05:46:11,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:11,226 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 421 transitions. [2024-11-14 05:46:11,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-14 05:46:11,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:46:11,226 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:46:11,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-14 05:46:11,227 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:46:11,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:46:11,227 INFO L85 PathProgramCache]: Analyzing trace with hash -2173496, now seen corresponding path program 1 times [2024-11-14 05:46:11,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:46:11,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986941683] [2024-11-14 05:46:11,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:46:11,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:46:11,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:46:11,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:46:11,439 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:46:11,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986941683] [2024-11-14 05:46:11,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986941683] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:46:11,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805581516] [2024-11-14 05:46:11,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:46:11,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:46:11,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:46:11,443 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:46:11,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 05:46:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:46:11,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 05:46:11,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:46:11,643 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 05:46:11,644 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:46:11,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:46:11,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805581516] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:46:11,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [707483149] [2024-11-14 05:46:11,737 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:46:11,737 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:46:11,741 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:46:11,746 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:46:11,747 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:46:13,512 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:46:23,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [707483149] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:46:23,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:46:23,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 4, 4] total 15 [2024-11-14 05:46:23,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910328100] [2024-11-14 05:46:23,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:46:23,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 05:46:23,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:46:23,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 05:46:23,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=174, Unknown=4, NotChecked=0, Total=240 [2024-11-14 05:46:23,263 INFO L87 Difference]: Start difference. First operand 257 states and 421 transitions. Second operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:25,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:46:27,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:46:28,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:46:28,190 INFO L93 Difference]: Finished difference Result 266 states and 432 transitions. [2024-11-14 05:46:28,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 05:46:28,192 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-14 05:46:28,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:46:28,194 INFO L225 Difference]: With dead ends: 266 [2024-11-14 05:46:28,194 INFO L226 Difference]: Without dead ends: 264 [2024-11-14 05:46:28,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=70, Invalid=198, Unknown=4, NotChecked=0, Total=272 [2024-11-14 05:46:28,195 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 2 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:46:28,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 74 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 174 Invalid, 5 Unknown, 0 Unchecked, 4.7s Time] [2024-11-14 05:46:28,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-14 05:46:28,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2024-11-14 05:46:28,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 248 states have (on average 1.7338709677419355) internal successors, (430), 263 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:28,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 430 transitions. [2024-11-14 05:46:28,221 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 430 transitions. Word has length 12 [2024-11-14 05:46:28,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:46:28,221 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 430 transitions. [2024-11-14 05:46:28,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:28,222 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 430 transitions. [2024-11-14 05:46:28,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 05:46:28,222 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:46:28,222 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:46:28,244 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 05:46:28,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:46:28,427 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:46:28,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:46:28,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1089092514, now seen corresponding path program 1 times [2024-11-14 05:46:28,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:46:28,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191698642] [2024-11-14 05:46:28,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:46:28,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:46:28,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:46:28,589 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:46:28,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:46:28,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191698642] [2024-11-14 05:46:28,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191698642] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:46:28,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141619044] [2024-11-14 05:46:28,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:46:28,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:46:28,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:46:28,593 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:46:28,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 05:46:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:46:28,676 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:46:28,677 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:46:28,727 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:46:28,727 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:46:28,798 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:46:28,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141619044] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:46:28,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [405744984] [2024-11-14 05:46:28,801 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2024-11-14 05:46:28,801 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:46:28,801 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:46:28,801 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:46:28,801 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:46:29,287 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:46:30,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [405744984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:46:30,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:46:30,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 5, 5] total 12 [2024-11-14 05:46:30,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418796960] [2024-11-14 05:46:30,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:46:30,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 05:46:30,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:46:30,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 05:46:30,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-14 05:46:30,940 INFO L87 Difference]: Start difference. First operand 264 states and 430 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:31,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:46:31,374 INFO L93 Difference]: Finished difference Result 236 states and 379 transitions. [2024-11-14 05:46:31,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 05:46:31,374 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-14 05:46:31,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:46:31,376 INFO L225 Difference]: With dead ends: 236 [2024-11-14 05:46:31,376 INFO L226 Difference]: Without dead ends: 236 [2024-11-14 05:46:31,377 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-14 05:46:31,377 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 1 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:46:31,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 72 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 05:46:31,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2024-11-14 05:46:31,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 235. [2024-11-14 05:46:31,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 219 states have (on average 1.726027397260274) internal successors, (378), 234 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:31,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 378 transitions. [2024-11-14 05:46:31,394 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 378 transitions. Word has length 13 [2024-11-14 05:46:31,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:46:31,394 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 378 transitions. [2024-11-14 05:46:31,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:31,395 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 378 transitions. [2024-11-14 05:46:31,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-14 05:46:31,395 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:46:31,396 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:46:31,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 05:46:31,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:46:31,596 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:46:31,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:46:31,597 INFO L85 PathProgramCache]: Analyzing trace with hash 2133495459, now seen corresponding path program 1 times [2024-11-14 05:46:31,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:46:31,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946045036] [2024-11-14 05:46:31,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:46:31,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:46:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:46:31,677 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 05:46:31,677 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:46:31,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946045036] [2024-11-14 05:46:31,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946045036] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:46:31,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:46:31,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:46:31,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899035217] [2024-11-14 05:46:31,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:46:31,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:46:31,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:46:31,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:46:31,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:46:31,680 INFO L87 Difference]: Start difference. First operand 235 states and 378 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:31,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:46:31,781 INFO L93 Difference]: Finished difference Result 106 states and 147 transitions. [2024-11-14 05:46:31,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:46:31,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-14 05:46:31,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:46:31,782 INFO L225 Difference]: With dead ends: 106 [2024-11-14 05:46:31,782 INFO L226 Difference]: Without dead ends: 106 [2024-11-14 05:46:31,783 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:46:31,783 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 5 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:46:31,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 107 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:46:31,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-14 05:46:31,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2024-11-14 05:46:31,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 94 states have (on average 1.5638297872340425) internal successors, (147), 105 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:31,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 147 transitions. [2024-11-14 05:46:31,789 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 147 transitions. Word has length 15 [2024-11-14 05:46:31,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:46:31,790 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 147 transitions. [2024-11-14 05:46:31,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:31,790 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 147 transitions. [2024-11-14 05:46:31,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-14 05:46:31,794 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:46:31,794 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:46:31,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-14 05:46:31,794 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:46:31,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:46:31,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1213488011, now seen corresponding path program 1 times [2024-11-14 05:46:31,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:46:31,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218451877] [2024-11-14 05:46:31,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:46:31,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:46:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:46:31,971 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 05:46:31,971 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:46:31,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218451877] [2024-11-14 05:46:31,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218451877] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:46:31,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129754618] [2024-11-14 05:46:31,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:46:31,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:46:31,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:46:31,974 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:46:31,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 05:46:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:46:32,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 05:46:32,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:46:32,131 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:46:32,134 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:46:32,283 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 05:46:32,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129754618] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:46:32,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1889397049] [2024-11-14 05:46:32,286 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-14 05:46:32,286 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:46:32,287 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:46:32,287 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:46:32,287 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:46:35,389 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:46:37,892 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3526#(and (= ~x4~0.offset 0) (= ~x4~0.base 0) (= ~S~0.base 0) (= ~x1~0.offset 0) (= ~t1~0.base 0) (= ~S~0.offset 0) (= ~garbage~0.offset 0) (exists ((|v_ULTIMATE.start_main_old_#valid#1_11| (Array Int Int))) (not (= |v_ULTIMATE.start_main_old_#valid#1_11| |#valid|))) (<= 1 ~pc4~0) (= ~x1~0.base 0) (= ~t1~0.offset 0) (= 0 ~garbage~0.base) (= ~t4~0.base 0) (= |ULTIMATE.start_main_#res#1| 0) (= ~t4~0.offset 0))' at error location [2024-11-14 05:46:37,892 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:46:37,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:46:37,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-14 05:46:37,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237376441] [2024-11-14 05:46:37,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:46:37,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 05:46:37,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:46:37,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 05:46:37,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=191, Unknown=3, NotChecked=0, Total=240 [2024-11-14 05:46:37,893 INFO L87 Difference]: Start difference. First operand 106 states and 147 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:37,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:46:37,985 INFO L93 Difference]: Finished difference Result 147 states and 204 transitions. [2024-11-14 05:46:37,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:46:37,986 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-14 05:46:37,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:46:37,987 INFO L225 Difference]: With dead ends: 147 [2024-11-14 05:46:37,987 INFO L226 Difference]: Without dead ends: 147 [2024-11-14 05:46:37,988 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=52, Invalid=217, Unknown=3, NotChecked=0, Total=272 [2024-11-14 05:46:37,988 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 123 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:46:37,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 150 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:46:37,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-14 05:46:37,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 134. [2024-11-14 05:46:37,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 122 states have (on average 1.598360655737705) internal successors, (195), 133 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:37,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 195 transitions. [2024-11-14 05:46:37,994 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 195 transitions. Word has length 17 [2024-11-14 05:46:37,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:46:37,994 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 195 transitions. [2024-11-14 05:46:37,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:37,994 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 195 transitions. [2024-11-14 05:46:37,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-14 05:46:37,995 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:46:37,995 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:46:38,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 05:46:38,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-14 05:46:38,196 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:46:38,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:46:38,196 INFO L85 PathProgramCache]: Analyzing trace with hash 918193205, now seen corresponding path program 1 times [2024-11-14 05:46:38,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:46:38,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468569020] [2024-11-14 05:46:38,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:46:38,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:46:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:46:38,407 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 05:46:38,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:46:38,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468569020] [2024-11-14 05:46:38,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468569020] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:46:38,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257091033] [2024-11-14 05:46:38,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:46:38,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:46:38,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:46:38,414 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:46:38,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 05:46:38,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:46:38,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 05:46:38,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:46:38,564 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 05:46:38,564 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:46:38,609 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 05:46:38,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257091033] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:46:38,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [157181480] [2024-11-14 05:46:38,611 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2024-11-14 05:46:38,611 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:46:38,611 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:46:38,611 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:46:38,611 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:46:39,579 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:46:48,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [157181480] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:46:48,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:46:48,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5, 5, 5] total 15 [2024-11-14 05:46:48,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261408328] [2024-11-14 05:46:48,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:46:48,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-14 05:46:48,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:46:48,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-14 05:46:48,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=191, Unknown=2, NotChecked=0, Total=240 [2024-11-14 05:46:48,429 INFO L87 Difference]: Start difference. First operand 134 states and 195 transitions. Second operand has 12 states, 12 states have (on average 1.25) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:50,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:46:52,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:46:53,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:46:53,723 INFO L93 Difference]: Finished difference Result 142 states and 205 transitions. [2024-11-14 05:46:53,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 05:46:53,724 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.25) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-14 05:46:53,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:46:53,725 INFO L225 Difference]: With dead ends: 142 [2024-11-14 05:46:53,725 INFO L226 Difference]: Without dead ends: 142 [2024-11-14 05:46:53,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=54, Invalid=216, Unknown=2, NotChecked=0, Total=272 [2024-11-14 05:46:53,726 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 2 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:46:53,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 111 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 301 Invalid, 4 Unknown, 0 Unchecked, 5.1s Time] [2024-11-14 05:46:53,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-14 05:46:53,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2024-11-14 05:46:53,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 130 states have (on average 1.5769230769230769) internal successors, (205), 141 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:53,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 205 transitions. [2024-11-14 05:46:53,732 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 205 transitions. Word has length 20 [2024-11-14 05:46:53,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:46:53,732 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 205 transitions. [2024-11-14 05:46:53,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.25) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:53,733 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 205 transitions. [2024-11-14 05:46:53,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-14 05:46:53,733 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:46:53,733 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:46:53,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 05:46:53,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-14 05:46:53,938 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:46:53,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:46:53,938 INFO L85 PathProgramCache]: Analyzing trace with hash 242519573, now seen corresponding path program 1 times [2024-11-14 05:46:53,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:46:53,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621632735] [2024-11-14 05:46:53,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:46:53,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:46:53,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:46:54,082 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:46:54,082 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:46:54,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621632735] [2024-11-14 05:46:54,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621632735] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:46:54,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350902103] [2024-11-14 05:46:54,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:46:54,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:46:54,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:46:54,086 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:46:54,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 05:46:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:46:54,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:46:54,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:46:54,236 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:46:54,236 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:46:54,309 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:46:54,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350902103] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:46:54,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1177283787] [2024-11-14 05:46:54,311 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2024-11-14 05:46:54,311 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:46:54,311 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:46:54,311 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:46:54,312 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:46:56,303 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:46:58,870 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4356#(and (or (< (+ ~t4~0.offset 4) 0) (< (select |#length| ~t4~0.base) (+ ~t4~0.offset 8))) (= |ULTIMATE.start_pop_#t~post6#1| 3) (<= 2 ~pc4~0))' at error location [2024-11-14 05:46:58,871 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:46:58,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:46:58,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-14 05:46:58,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736059924] [2024-11-14 05:46:58,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:46:58,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 05:46:58,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:46:58,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 05:46:58,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=280, Unknown=3, NotChecked=0, Total=342 [2024-11-14 05:46:58,872 INFO L87 Difference]: Start difference. First operand 142 states and 205 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:59,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:46:59,080 INFO L93 Difference]: Finished difference Result 236 states and 323 transitions. [2024-11-14 05:46:59,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 05:46:59,081 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-14 05:46:59,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:46:59,082 INFO L225 Difference]: With dead ends: 236 [2024-11-14 05:46:59,082 INFO L226 Difference]: Without dead ends: 236 [2024-11-14 05:46:59,083 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=69, Invalid=348, Unknown=3, NotChecked=0, Total=420 [2024-11-14 05:46:59,083 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 91 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:46:59,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 225 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:46:59,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2024-11-14 05:46:59,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 203. [2024-11-14 05:46:59,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 191 states have (on average 1.513089005235602) internal successors, (289), 202 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:59,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 289 transitions. [2024-11-14 05:46:59,095 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 289 transitions. Word has length 20 [2024-11-14 05:46:59,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:46:59,095 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 289 transitions. [2024-11-14 05:46:59,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:59,096 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 289 transitions. [2024-11-14 05:46:59,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-14 05:46:59,097 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:46:59,097 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:46:59,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-14 05:46:59,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-14 05:46:59,298 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:46:59,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:46:59,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1208248584, now seen corresponding path program 1 times [2024-11-14 05:46:59,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:46:59,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383305331] [2024-11-14 05:46:59,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:46:59,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:46:59,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:46:59,501 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:46:59,501 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:46:59,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383305331] [2024-11-14 05:46:59,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383305331] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:46:59,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6685611] [2024-11-14 05:46:59,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:46:59,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:46:59,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:46:59,504 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:46:59,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 05:46:59,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:46:59,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 05:46:59,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:46:59,639 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:46:59,639 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:46:59,690 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:46:59,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6685611] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:46:59,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1859256571] [2024-11-14 05:46:59,692 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2024-11-14 05:46:59,692 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:46:59,692 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:46:59,693 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:46:59,693 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:47:02,940 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:47:03,489 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4960#(and (= ~x4~0.offset 0) (= ~x4~0.base 0) (= ~S~0.base 0) (= ~x1~0.offset 0) (= ~t1~0.base 0) (= ~S~0.offset 0) (= ~garbage~0.offset 0) (<= 1 ~pc4~0) (= ~x1~0.base 0) (= ~t1~0.offset 0) (= 0 ~garbage~0.base) (= ~t4~0.base 0) (exists ((|v_ULTIMATE.start_main_old_#valid#1_13| (Array Int Int))) (not (= |v_ULTIMATE.start_main_old_#valid#1_13| |#valid|))) (= |ULTIMATE.start_main_#res#1| 0) (= ~t4~0.offset 0))' at error location [2024-11-14 05:47:03,489 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:47:03,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:47:03,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-11-14 05:47:03,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329876405] [2024-11-14 05:47:03,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:47:03,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:47:03,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:03,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:47:03,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=226, Unknown=1, NotChecked=0, Total=272 [2024-11-14 05:47:03,490 INFO L87 Difference]: Start difference. First operand 203 states and 289 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:03,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:03,613 INFO L93 Difference]: Finished difference Result 304 states and 418 transitions. [2024-11-14 05:47:03,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 05:47:03,613 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-14 05:47:03,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:03,615 INFO L225 Difference]: With dead ends: 304 [2024-11-14 05:47:03,615 INFO L226 Difference]: Without dead ends: 304 [2024-11-14 05:47:03,615 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=53, Invalid=288, Unknown=1, NotChecked=0, Total=342 [2024-11-14 05:47:03,616 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 29 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:47:03,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 199 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:47:03,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-11-14 05:47:03,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 271. [2024-11-14 05:47:03,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 259 states have (on average 1.505791505791506) internal successors, (390), 270 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:03,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 390 transitions. [2024-11-14 05:47:03,624 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 390 transitions. Word has length 25 [2024-11-14 05:47:03,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:03,625 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 390 transitions. [2024-11-14 05:47:03,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:03,625 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 390 transitions. [2024-11-14 05:47:03,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-14 05:47:03,626 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:03,626 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:03,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-14 05:47:03,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:03,827 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:47:03,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:03,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1883922216, now seen corresponding path program 2 times [2024-11-14 05:47:03,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:03,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588435495] [2024-11-14 05:47:03,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:03,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:03,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:03,972 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:47:03,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:03,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588435495] [2024-11-14 05:47:03,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588435495] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:47:03,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166811670] [2024-11-14 05:47:03,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:47:03,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:03,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:47:03,976 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:47:03,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 05:47:04,067 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-14 05:47:04,067 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:47:04,068 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:47:04,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:47:04,156 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:47:04,156 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:47:04,216 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:47:04,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166811670] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:47:04,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [592969061] [2024-11-14 05:47:04,218 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2024-11-14 05:47:04,220 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:47:04,220 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:47:04,221 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:47:04,221 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:47:05,742 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:47:08,174 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5703#(and (or (< (+ ~t4~0.offset 4) 0) (< (select |#length| ~t4~0.base) (+ ~t4~0.offset 8))) (= |ULTIMATE.start_pop_#t~post6#1| 3) (<= 2 ~pc4~0))' at error location [2024-11-14 05:47:08,174 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:47:08,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:47:08,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 9 [2024-11-14 05:47:08,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609530087] [2024-11-14 05:47:08,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:47:08,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 05:47:08,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:08,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 05:47:08,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=309, Unknown=3, NotChecked=0, Total=380 [2024-11-14 05:47:08,175 INFO L87 Difference]: Start difference. First operand 271 states and 390 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:08,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:08,457 INFO L93 Difference]: Finished difference Result 413 states and 558 transitions. [2024-11-14 05:47:08,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 05:47:08,458 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-14 05:47:08,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:08,460 INFO L225 Difference]: With dead ends: 413 [2024-11-14 05:47:08,460 INFO L226 Difference]: Without dead ends: 413 [2024-11-14 05:47:08,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=102, Invalid=495, Unknown=3, NotChecked=0, Total=600 [2024-11-14 05:47:08,460 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 131 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:47:08,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 362 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:47:08,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2024-11-14 05:47:08,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 334. [2024-11-14 05:47:08,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 322 states have (on average 1.4658385093167703) internal successors, (472), 333 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:08,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 472 transitions. [2024-11-14 05:47:08,470 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 472 transitions. Word has length 25 [2024-11-14 05:47:08,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:08,470 INFO L471 AbstractCegarLoop]: Abstraction has 334 states and 472 transitions. [2024-11-14 05:47:08,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:08,471 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 472 transitions. [2024-11-14 05:47:08,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-14 05:47:08,471 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:08,472 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:08,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-14 05:47:08,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:08,672 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:47:08,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:08,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1364779448, now seen corresponding path program 1 times [2024-11-14 05:47:08,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:08,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822879304] [2024-11-14 05:47:08,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:08,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:08,938 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:47:08,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:08,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822879304] [2024-11-14 05:47:08,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822879304] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:47:08,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431189265] [2024-11-14 05:47:08,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:08,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:08,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:47:08,942 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:47:08,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 05:47:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:09,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-14 05:47:09,054 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:47:09,196 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:47:09,196 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:47:09,407 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:47:09,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431189265] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:47:09,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [235868873] [2024-11-14 05:47:09,410 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2024-11-14 05:47:09,410 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:47:09,410 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:47:09,410 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:47:09,410 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:47:11,196 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:47:13,653 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6634#(and (or (< (+ ~t4~0.offset 4) 0) (< (select |#length| ~t4~0.base) (+ ~t4~0.offset 8))) (= |ULTIMATE.start_pop_#t~post6#1| 3))' at error location [2024-11-14 05:47:13,653 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:47:13,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:47:13,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 7] total 10 [2024-11-14 05:47:13,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055874033] [2024-11-14 05:47:13,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:47:13,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 05:47:13,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:13,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 05:47:13,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=294, Unknown=2, NotChecked=0, Total=342 [2024-11-14 05:47:13,655 INFO L87 Difference]: Start difference. First operand 334 states and 472 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:14,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:14,407 INFO L93 Difference]: Finished difference Result 1101 states and 1551 transitions. [2024-11-14 05:47:14,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-14 05:47:14,408 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-14 05:47:14,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:14,412 INFO L225 Difference]: With dead ends: 1101 [2024-11-14 05:47:14,412 INFO L226 Difference]: Without dead ends: 1101 [2024-11-14 05:47:14,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=225, Invalid=1179, Unknown=2, NotChecked=0, Total=1406 [2024-11-14 05:47:14,413 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 387 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:47:14,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 318 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 05:47:14,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2024-11-14 05:47:14,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 796. [2024-11-14 05:47:14,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 784 states have (on average 1.4770408163265305) internal successors, (1158), 795 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:14,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1158 transitions. [2024-11-14 05:47:14,441 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1158 transitions. Word has length 26 [2024-11-14 05:47:14,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:14,442 INFO L471 AbstractCegarLoop]: Abstraction has 796 states and 1158 transitions. [2024-11-14 05:47:14,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:14,442 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1158 transitions. [2024-11-14 05:47:14,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-14 05:47:14,443 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:14,443 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:14,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-14 05:47:14,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:14,647 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:47:14,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:14,647 INFO L85 PathProgramCache]: Analyzing trace with hash 769528088, now seen corresponding path program 1 times [2024-11-14 05:47:14,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:14,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149085373] [2024-11-14 05:47:14,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:14,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:14,819 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:47:14,819 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:14,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149085373] [2024-11-14 05:47:14,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149085373] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:47:14,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412239927] [2024-11-14 05:47:14,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:14,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:14,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:47:14,822 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:47:14,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-14 05:47:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:14,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-14 05:47:14,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:47:15,019 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:47:15,019 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:47:15,058 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:47:15,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412239927] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:47:15,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1232280836] [2024-11-14 05:47:15,060 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 05:47:15,060 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:47:15,060 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:47:15,060 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:47:15,061 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:47:15,918 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:47:17,044 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8742#(and (= ~x4~0.offset 0) (= ~x4~0.base 0) (exists ((|v_ULTIMATE.start_main_old_#valid#1_14| (Array Int Int))) (not (= |v_ULTIMATE.start_main_old_#valid#1_14| |#valid|))) (= ~pc1~0 1) (= ~S~0.base 0) (= ~x1~0.offset 0) (= ~t1~0.base 0) (= ~S~0.offset 0) (= ~garbage~0.offset 0) (= ~x1~0.base 0) (= ~t1~0.offset 0) (= 0 ~garbage~0.base) (= ~t4~0.base 0) (= |ULTIMATE.start_main_#res#1| 0) (= ~t4~0.offset 0))' at error location [2024-11-14 05:47:17,044 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:47:17,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:47:17,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 9 [2024-11-14 05:47:17,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178120257] [2024-11-14 05:47:17,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:47:17,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 05:47:17,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:17,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 05:47:17,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=330, Unknown=1, NotChecked=0, Total=380 [2024-11-14 05:47:17,045 INFO L87 Difference]: Start difference. First operand 796 states and 1158 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:17,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:17,421 INFO L93 Difference]: Finished difference Result 1160 states and 1597 transitions. [2024-11-14 05:47:17,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-14 05:47:17,422 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-14 05:47:17,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:17,426 INFO L225 Difference]: With dead ends: 1160 [2024-11-14 05:47:17,426 INFO L226 Difference]: Without dead ends: 1158 [2024-11-14 05:47:17,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=99, Invalid=656, Unknown=1, NotChecked=0, Total=756 [2024-11-14 05:47:17,428 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 74 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:47:17,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 385 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:47:17,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2024-11-14 05:47:17,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1120. [2024-11-14 05:47:17,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1108 states have (on average 1.4160649819494584) internal successors, (1569), 1119 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:17,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 1569 transitions. [2024-11-14 05:47:17,456 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 1569 transitions. Word has length 27 [2024-11-14 05:47:17,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:17,458 INFO L471 AbstractCegarLoop]: Abstraction has 1120 states and 1569 transitions. [2024-11-14 05:47:17,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:17,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 1569 transitions. [2024-11-14 05:47:17,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-14 05:47:17,462 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:17,462 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:17,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-14 05:47:17,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-14 05:47:17,663 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:47:17,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:17,663 INFO L85 PathProgramCache]: Analyzing trace with hash -515805997, now seen corresponding path program 1 times [2024-11-14 05:47:17,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:17,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001652817] [2024-11-14 05:47:17,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:17,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:17,807 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:47:17,807 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:17,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001652817] [2024-11-14 05:47:17,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001652817] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:47:17,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181230703] [2024-11-14 05:47:17,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:17,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:17,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:47:17,810 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:47:17,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-14 05:47:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:17,927 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 05:47:17,929 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:47:17,974 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:47:17,974 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:47:18,020 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:47:18,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181230703] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:47:18,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [485322382] [2024-11-14 05:47:18,022 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2024-11-14 05:47:18,025 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:47:18,025 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:47:18,025 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:47:18,025 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:47:19,834 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:47:22,456 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11225#(and (or (< (+ ~t4~0.offset 4) 0) (< (select |#length| ~t4~0.base) (+ ~t4~0.offset 8))) (= |ULTIMATE.start_pop_#t~post6#1| 3) (<= 2 ~pc4~0))' at error location [2024-11-14 05:47:22,456 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:47:22,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:47:22,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-11-14 05:47:22,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421921757] [2024-11-14 05:47:22,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:47:22,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:47:22,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:22,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:47:22,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=242, Unknown=2, NotChecked=0, Total=306 [2024-11-14 05:47:22,457 INFO L87 Difference]: Start difference. First operand 1120 states and 1569 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:22,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:22,629 INFO L93 Difference]: Finished difference Result 1186 states and 1635 transitions. [2024-11-14 05:47:22,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 05:47:22,630 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-14 05:47:22,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:22,635 INFO L225 Difference]: With dead ends: 1186 [2024-11-14 05:47:22,635 INFO L226 Difference]: Without dead ends: 1186 [2024-11-14 05:47:22,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=72, Invalid=306, Unknown=2, NotChecked=0, Total=380 [2024-11-14 05:47:22,636 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 52 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:47:22,637 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 255 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:47:22,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2024-11-14 05:47:22,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1139. [2024-11-14 05:47:22,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1127 states have (on average 1.4090505767524402) internal successors, (1588), 1138 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:22,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1588 transitions. [2024-11-14 05:47:22,666 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1588 transitions. Word has length 29 [2024-11-14 05:47:22,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:22,666 INFO L471 AbstractCegarLoop]: Abstraction has 1139 states and 1588 transitions. [2024-11-14 05:47:22,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:22,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1588 transitions. [2024-11-14 05:47:22,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-14 05:47:22,667 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:22,667 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:22,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-14 05:47:22,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-14 05:47:22,871 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:47:22,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:22,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1461099149, now seen corresponding path program 1 times [2024-11-14 05:47:22,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:22,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131981623] [2024-11-14 05:47:22,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:22,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:23,051 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-14 05:47:23,051 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:23,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131981623] [2024-11-14 05:47:23,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131981623] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:47:23,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258630393] [2024-11-14 05:47:23,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:23,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:23,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:47:23,054 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:47:23,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-14 05:47:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:23,178 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 05:47:23,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:47:23,230 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-14 05:47:23,230 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:47:23,270 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-14 05:47:23,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258630393] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:47:23,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1454672194] [2024-11-14 05:47:23,272 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 05:47:23,272 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:47:23,272 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:47:23,272 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:47:23,272 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:47:24,066 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:47:25,269 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13773#(and (= ~x4~0.offset 0) (= ~x4~0.base 0) (= ~pc1~0 1) (= ~S~0.base 0) (= ~x1~0.offset 0) (exists ((|v_ULTIMATE.start_main_old_#valid#1_15| (Array Int Int))) (not (= |v_ULTIMATE.start_main_old_#valid#1_15| |#valid|))) (= ~t1~0.base 0) (= ~S~0.offset 0) (= ~garbage~0.offset 0) (= ~x1~0.base 0) (= ~t1~0.offset 0) (= 0 ~garbage~0.base) (= ~t4~0.base 0) (= |ULTIMATE.start_main_#res#1| 0) (= ~t4~0.offset 0))' at error location [2024-11-14 05:47:25,269 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:47:25,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:47:25,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2024-11-14 05:47:25,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897544394] [2024-11-14 05:47:25,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:47:25,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 05:47:25,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:25,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 05:47:25,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=327, Unknown=1, NotChecked=0, Total=380 [2024-11-14 05:47:25,271 INFO L87 Difference]: Start difference. First operand 1139 states and 1588 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:25,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:25,557 INFO L93 Difference]: Finished difference Result 1515 states and 2046 transitions. [2024-11-14 05:47:25,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 05:47:25,558 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-14 05:47:25,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:25,563 INFO L225 Difference]: With dead ends: 1515 [2024-11-14 05:47:25,564 INFO L226 Difference]: Without dead ends: 1515 [2024-11-14 05:47:25,564 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=88, Invalid=511, Unknown=1, NotChecked=0, Total=600 [2024-11-14 05:47:25,565 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 91 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:47:25,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 244 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:47:25,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2024-11-14 05:47:25,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1457. [2024-11-14 05:47:25,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1457 states, 1445 states have (on average 1.379930795847751) internal successors, (1994), 1456 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:25,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 1994 transitions. [2024-11-14 05:47:25,600 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 1994 transitions. Word has length 34 [2024-11-14 05:47:25,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:25,600 INFO L471 AbstractCegarLoop]: Abstraction has 1457 states and 1994 transitions. [2024-11-14 05:47:25,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:25,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 1994 transitions. [2024-11-14 05:47:25,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-14 05:47:25,601 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:25,601 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:25,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-14 05:47:25,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:25,802 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:47:25,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:25,804 INFO L85 PathProgramCache]: Analyzing trace with hash 890339283, now seen corresponding path program 1 times [2024-11-14 05:47:25,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:25,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391780066] [2024-11-14 05:47:25,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:25,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:25,971 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-14 05:47:25,971 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:25,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391780066] [2024-11-14 05:47:25,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391780066] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:47:25,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591345847] [2024-11-14 05:47:25,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:25,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:25,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:47:25,974 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:47:25,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-14 05:47:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:26,115 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:47:26,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:47:26,175 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-14 05:47:26,176 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:47:26,201 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-14 05:47:26,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591345847] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:47:26,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1091100624] [2024-11-14 05:47:26,202 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2024-11-14 05:47:26,205 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:47:26,205 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:47:26,206 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:47:26,206 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:47:28,037 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:47:30,435 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17008#(and (or (< (+ ~t4~0.offset 4) 0) (< (select |#length| ~t4~0.base) (+ ~t4~0.offset 8))) (= |ULTIMATE.start_pop_#t~post6#1| 3))' at error location [2024-11-14 05:47:30,435 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:47:30,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:47:30,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2024-11-14 05:47:30,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193721698] [2024-11-14 05:47:30,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:47:30,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 05:47:30,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:30,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 05:47:30,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=202, Unknown=3, NotChecked=0, Total=240 [2024-11-14 05:47:30,436 INFO L87 Difference]: Start difference. First operand 1457 states and 1994 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:30,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:30,620 INFO L93 Difference]: Finished difference Result 755 states and 977 transitions. [2024-11-14 05:47:30,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 05:47:30,620 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-14 05:47:30,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:30,623 INFO L225 Difference]: With dead ends: 755 [2024-11-14 05:47:30,623 INFO L226 Difference]: Without dead ends: 755 [2024-11-14 05:47:30,623 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=50, Invalid=289, Unknown=3, NotChecked=0, Total=342 [2024-11-14 05:47:30,624 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 30 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:47:30,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 303 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:47:30,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2024-11-14 05:47:30,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 705. [2024-11-14 05:47:30,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 693 states have (on average 1.3376623376623376) internal successors, (927), 704 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:30,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 927 transitions. [2024-11-14 05:47:30,642 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 927 transitions. Word has length 40 [2024-11-14 05:47:30,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:30,642 INFO L471 AbstractCegarLoop]: Abstraction has 705 states and 927 transitions. [2024-11-14 05:47:30,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:30,643 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 927 transitions. [2024-11-14 05:47:30,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-14 05:47:30,643 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:30,644 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:30,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-14 05:47:30,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:30,844 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:47:30,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:30,845 INFO L85 PathProgramCache]: Analyzing trace with hash -254119115, now seen corresponding path program 1 times [2024-11-14 05:47:30,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:30,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388943792] [2024-11-14 05:47:30,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:30,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:31,313 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 46 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-14 05:47:31,314 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:31,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388943792] [2024-11-14 05:47:31,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388943792] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:47:31,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195698729] [2024-11-14 05:47:31,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:31,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:31,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:47:31,318 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:47:31,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-14 05:47:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:31,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-14 05:47:31,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:47:31,979 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 40 proven. 26 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:47:31,979 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:47:32,617 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 48 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:47:32,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195698729] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:47:32,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [811796658] [2024-11-14 05:47:32,619 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2024-11-14 05:47:32,619 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:47:32,619 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:47:32,619 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:47:32,619 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:47:33,461 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:47:34,871 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18757#(and (= ~x4~0.offset 0) (= ~x4~0.base 0) (= ~pc1~0 1) (= ~S~0.base 0) (= ~x1~0.offset 0) (= ~t1~0.base 0) (= ~S~0.offset 0) (= ~garbage~0.offset 0) (exists ((|v_ULTIMATE.start_main_old_#valid#1_16| (Array Int Int))) (not (= |v_ULTIMATE.start_main_old_#valid#1_16| |#valid|))) (= ~x1~0.base 0) (= ~t1~0.offset 0) (= 0 ~garbage~0.base) (= ~t4~0.base 0) (= |ULTIMATE.start_main_#res#1| 0) (= ~t4~0.offset 0))' at error location [2024-11-14 05:47:34,871 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:47:34,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:47:34,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 22 [2024-11-14 05:47:34,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614881491] [2024-11-14 05:47:34,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:47:34,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-14 05:47:34,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:34,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-14 05:47:34,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1008, Unknown=1, NotChecked=0, Total=1122 [2024-11-14 05:47:34,873 INFO L87 Difference]: Start difference. First operand 705 states and 927 transitions. Second operand has 22 states, 22 states have (on average 4.136363636363637) internal successors, (91), 22 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:38,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:38,192 INFO L93 Difference]: Finished difference Result 2012 states and 2611 transitions. [2024-11-14 05:47:38,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-14 05:47:38,193 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.136363636363637) internal successors, (91), 22 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-14 05:47:38,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:38,198 INFO L225 Difference]: With dead ends: 2012 [2024-11-14 05:47:38,198 INFO L226 Difference]: Without dead ends: 2012 [2024-11-14 05:47:38,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1898 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1007, Invalid=5798, Unknown=1, NotChecked=0, Total=6806 [2024-11-14 05:47:38,200 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 862 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:47:38,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 1093 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 05:47:38,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2012 states. [2024-11-14 05:47:38,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2012 to 1412. [2024-11-14 05:47:38,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1400 states have (on average 1.362142857142857) internal successors, (1907), 1411 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:38,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 1907 transitions. [2024-11-14 05:47:38,231 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 1907 transitions. Word has length 43 [2024-11-14 05:47:38,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:38,231 INFO L471 AbstractCegarLoop]: Abstraction has 1412 states and 1907 transitions. [2024-11-14 05:47:38,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.136363636363637) internal successors, (91), 22 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:38,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 1907 transitions. [2024-11-14 05:47:38,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-14 05:47:38,233 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:38,233 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 5, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:38,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-14 05:47:38,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:38,437 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:47:38,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:38,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1101659237, now seen corresponding path program 1 times [2024-11-14 05:47:38,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:38,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113309654] [2024-11-14 05:47:38,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:38,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:39,271 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 55 proven. 52 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 05:47:39,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:39,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113309654] [2024-11-14 05:47:39,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113309654] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:47:39,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367778976] [2024-11-14 05:47:39,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:39,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:39,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:47:39,275 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:47:39,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-14 05:47:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:39,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-14 05:47:39,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:47:39,477 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 05:47:40,217 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 47 proven. 62 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 05:47:40,217 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:47:41,717 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 25 proven. 84 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 05:47:41,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367778976] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:47:41,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [645451115] [2024-11-14 05:47:41,719 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2024-11-14 05:47:41,720 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:47:41,720 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:47:41,720 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:47:41,720 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:47:43,166 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:47:44,380 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22670#(and (= ~pc4~0 4) (exists ((|v_ULTIMATE.start_main_#t~short11#1_16| Bool) (|v_ULTIMATE.start_main_#t~nondet10#1_13| Int)) (and (or (and (or (not (= ~S~0.offset 0)) (not (= ~pc1~0 1)) (not (= ~S~0.base 0))) |v_ULTIMATE.start_main_#t~short11#1_16|) (and (= ~pc1~0 1) (= ~S~0.base 0) (= ~S~0.offset 0) (not |v_ULTIMATE.start_main_#t~short11#1_16|))) (or |v_ULTIMATE.start_main_#t~short11#1_16| (and (not (= |v_ULTIMATE.start_main_#t~nondet10#1_13| 0)) (<= 0 (+ 2147483648 |v_ULTIMATE.start_main_#t~nondet10#1_13|)) (<= |v_ULTIMATE.start_main_#t~nondet10#1_13| 2147483647))))) (or (< (+ ~t4~0.offset 4) 0) (< (select |#length| ~t4~0.base) (+ ~t4~0.offset 8))) (= |ULTIMATE.start_pop_#t~post6#1| 3))' at error location [2024-11-14 05:47:44,381 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:47:44,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:47:44,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 22 [2024-11-14 05:47:44,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246426182] [2024-11-14 05:47:44,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:47:44,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-14 05:47:44,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:44,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-14 05:47:44,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1192, Unknown=1, NotChecked=0, Total=1332 [2024-11-14 05:47:44,382 INFO L87 Difference]: Start difference. First operand 1412 states and 1907 transitions. Second operand has 23 states, 22 states have (on average 4.818181818181818) internal successors, (106), 23 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:49,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:49,826 INFO L93 Difference]: Finished difference Result 3178 states and 4339 transitions. [2024-11-14 05:47:49,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-14 05:47:49,827 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 4.818181818181818) internal successors, (106), 23 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-14 05:47:49,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:49,835 INFO L225 Difference]: With dead ends: 3178 [2024-11-14 05:47:49,835 INFO L226 Difference]: Without dead ends: 3178 [2024-11-14 05:47:49,837 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1925 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1350, Invalid=6659, Unknown=1, NotChecked=0, Total=8010 [2024-11-14 05:47:49,838 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 734 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 1508 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 1545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-14 05:47:49,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 875 Invalid, 1545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1508 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-14 05:47:49,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3178 states. [2024-11-14 05:47:49,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3178 to 2750. [2024-11-14 05:47:49,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2750 states, 2738 states have (on average 1.4349890430971513) internal successors, (3929), 2749 states have internal predecessors, (3929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:49,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2750 states to 2750 states and 3929 transitions. [2024-11-14 05:47:49,898 INFO L78 Accepts]: Start accepts. Automaton has 2750 states and 3929 transitions. Word has length 57 [2024-11-14 05:47:49,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:49,899 INFO L471 AbstractCegarLoop]: Abstraction has 2750 states and 3929 transitions. [2024-11-14 05:47:49,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 4.818181818181818) internal successors, (106), 23 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:49,899 INFO L276 IsEmpty]: Start isEmpty. Operand 2750 states and 3929 transitions. [2024-11-14 05:47:49,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-14 05:47:49,900 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:49,900 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 5, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:49,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-14 05:47:50,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:50,101 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:47:50,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:50,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1101659236, now seen corresponding path program 1 times [2024-11-14 05:47:50,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:50,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348828135] [2024-11-14 05:47:50,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:50,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:50,573 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 55 proven. 52 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 05:47:50,573 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:50,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348828135] [2024-11-14 05:47:50,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348828135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:47:50,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159699929] [2024-11-14 05:47:50,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:50,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:50,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:47:50,576 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:47:50,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-14 05:47:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:50,744 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-14 05:47:50,747 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:47:51,211 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 47 proven. 62 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 05:47:51,211 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:47:52,144 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 25 proven. 84 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 05:47:52,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159699929] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:47:52,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1357867442] [2024-11-14 05:47:52,146 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2024-11-14 05:47:52,146 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:47:52,146 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:47:52,146 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:47:52,146 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:47:53,849 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:47:55,002 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '29107#(and (= ~pc4~0 4) (exists ((|v_ULTIMATE.start_main_#t~short11#1_16| Bool) (|v_ULTIMATE.start_main_#t~nondet10#1_13| Int)) (and (or (and (or (not (= ~S~0.offset 0)) (not (= ~pc1~0 1)) (not (= ~S~0.base 0))) |v_ULTIMATE.start_main_#t~short11#1_16|) (and (= ~pc1~0 1) (= ~S~0.base 0) (= ~S~0.offset 0) (not |v_ULTIMATE.start_main_#t~short11#1_16|))) (or |v_ULTIMATE.start_main_#t~short11#1_16| (and (not (= |v_ULTIMATE.start_main_#t~nondet10#1_13| 0)) (<= 0 (+ 2147483648 |v_ULTIMATE.start_main_#t~nondet10#1_13|)) (<= |v_ULTIMATE.start_main_#t~nondet10#1_13| 2147483647))))) (not (= (select |#valid| ~t4~0.base) 1)) (= |ULTIMATE.start_pop_#t~post6#1| 3))' at error location [2024-11-14 05:47:55,002 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:47:55,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:47:55,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-14 05:47:55,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006426952] [2024-11-14 05:47:55,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:47:55,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-14 05:47:55,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:55,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-14 05:47:55,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=899, Unknown=1, NotChecked=0, Total=992 [2024-11-14 05:47:55,004 INFO L87 Difference]: Start difference. First operand 2750 states and 3929 transitions. Second operand has 18 states, 17 states have (on average 4.705882352941177) internal successors, (80), 18 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:58,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:58,195 INFO L93 Difference]: Finished difference Result 3354 states and 4630 transitions. [2024-11-14 05:47:58,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-14 05:47:58,196 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.705882352941177) internal successors, (80), 18 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-14 05:47:58,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:58,202 INFO L225 Difference]: With dead ends: 3354 [2024-11-14 05:47:58,202 INFO L226 Difference]: Without dead ends: 3354 [2024-11-14 05:47:58,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=654, Invalid=3635, Unknown=1, NotChecked=0, Total=4290 [2024-11-14 05:47:58,204 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 445 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 1487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:47:58,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 962 Invalid, 1487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1449 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-14 05:47:58,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3354 states. [2024-11-14 05:47:58,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3354 to 3225. [2024-11-14 05:47:58,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3225 states, 3214 states have (on average 1.413503422526447) internal successors, (4543), 3224 states have internal predecessors, (4543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:58,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3225 states to 3225 states and 4543 transitions. [2024-11-14 05:47:58,264 INFO L78 Accepts]: Start accepts. Automaton has 3225 states and 4543 transitions. Word has length 57 [2024-11-14 05:47:58,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:58,264 INFO L471 AbstractCegarLoop]: Abstraction has 3225 states and 4543 transitions. [2024-11-14 05:47:58,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.705882352941177) internal successors, (80), 18 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:58,264 INFO L276 IsEmpty]: Start isEmpty. Operand 3225 states and 4543 transitions. [2024-11-14 05:47:58,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-14 05:47:58,266 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:58,266 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 6, 6, 5, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:58,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-14 05:47:58,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:58,471 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:47:58,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:58,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1021231430, now seen corresponding path program 1 times [2024-11-14 05:47:58,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:58,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601736735] [2024-11-14 05:47:58,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:58,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:58,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:58,830 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2024-11-14 05:47:58,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:58,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601736735] [2024-11-14 05:47:58,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601736735] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:47:58,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239630197] [2024-11-14 05:47:58,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:58,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:58,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:47:58,834 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:47:58,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-14 05:47:59,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:59,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:47:59,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:47:59,464 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 26 proven. 56 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-14 05:47:59,465 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:47:59,862 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 28 proven. 56 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-14 05:47:59,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239630197] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:47:59,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1784983177] [2024-11-14 05:47:59,864 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-14 05:47:59,864 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:47:59,864 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:47:59,865 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:47:59,865 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:48:01,398 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:48:03,109 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '36227#(and (= ~x4~0.offset 0) (= ~x4~0.base 0) (= ~pc1~0 1) (= ~S~0.base 0) (= ~x1~0.offset 0) (= ~t1~0.base 0) (exists ((|v_ULTIMATE.start_main_old_#valid#1_17| (Array Int Int))) (not (= |v_ULTIMATE.start_main_old_#valid#1_17| |#valid|))) (= ~S~0.offset 0) (= ~garbage~0.offset 0) (= ~x1~0.base 0) (= ~t1~0.offset 0) (= 0 ~garbage~0.base) (= ~t4~0.base 0) (= |ULTIMATE.start_main_#res#1| 0) (= ~t4~0.offset 0))' at error location [2024-11-14 05:48:03,109 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:48:03,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:48:03,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 9] total 23 [2024-11-14 05:48:03,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565639211] [2024-11-14 05:48:03,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:48:03,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-14 05:48:03,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:48:03,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-14 05:48:03,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1378, Unknown=1, NotChecked=0, Total=1560 [2024-11-14 05:48:03,111 INFO L87 Difference]: Start difference. First operand 3225 states and 4543 transitions. Second operand has 23 states, 23 states have (on average 4.695652173913044) internal successors, (108), 23 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:04,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:48:04,623 INFO L93 Difference]: Finished difference Result 8482 states and 11669 transitions. [2024-11-14 05:48:04,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-14 05:48:04,624 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.695652173913044) internal successors, (108), 23 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-14 05:48:04,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:48:04,646 INFO L225 Difference]: With dead ends: 8482 [2024-11-14 05:48:04,646 INFO L226 Difference]: Without dead ends: 8482 [2024-11-14 05:48:04,647 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1425 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=585, Invalid=4106, Unknown=1, NotChecked=0, Total=4692 [2024-11-14 05:48:04,648 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 421 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:48:04,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 777 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 05:48:04,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8482 states. [2024-11-14 05:48:04,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8482 to 7096. [2024-11-14 05:48:04,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7096 states, 7085 states have (on average 1.4052223006351447) internal successors, (9956), 7095 states have internal predecessors, (9956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:04,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7096 states to 7096 states and 9956 transitions. [2024-11-14 05:48:04,770 INFO L78 Accepts]: Start accepts. Automaton has 7096 states and 9956 transitions. Word has length 70 [2024-11-14 05:48:04,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:48:04,770 INFO L471 AbstractCegarLoop]: Abstraction has 7096 states and 9956 transitions. [2024-11-14 05:48:04,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.695652173913044) internal successors, (108), 23 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:04,771 INFO L276 IsEmpty]: Start isEmpty. Operand 7096 states and 9956 transitions. [2024-11-14 05:48:04,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-14 05:48:04,772 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:48:04,773 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 6, 6, 5, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:48:04,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-14 05:48:04,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:48:04,974 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:48:04,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:48:04,975 INFO L85 PathProgramCache]: Analyzing trace with hash -680446551, now seen corresponding path program 1 times [2024-11-14 05:48:04,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:48:04,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887448606] [2024-11-14 05:48:04,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:04,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:48:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 05:48:05,026 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 05:48:05,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 05:48:05,129 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-14 05:48:05,129 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-14 05:48:05,131 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK (19 of 20 remaining) [2024-11-14 05:48:05,132 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 20 remaining) [2024-11-14 05:48:05,133 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 20 remaining) [2024-11-14 05:48:05,133 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 20 remaining) [2024-11-14 05:48:05,133 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 20 remaining) [2024-11-14 05:48:05,133 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 20 remaining) [2024-11-14 05:48:05,133 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 20 remaining) [2024-11-14 05:48:05,133 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 20 remaining) [2024-11-14 05:48:05,134 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 20 remaining) [2024-11-14 05:48:05,134 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 20 remaining) [2024-11-14 05:48:05,134 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 20 remaining) [2024-11-14 05:48:05,134 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 20 remaining) [2024-11-14 05:48:05,134 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 20 remaining) [2024-11-14 05:48:05,135 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 20 remaining) [2024-11-14 05:48:05,135 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 20 remaining) [2024-11-14 05:48:05,135 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 20 remaining) [2024-11-14 05:48:05,135 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 20 remaining) [2024-11-14 05:48:05,135 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE (2 of 20 remaining) [2024-11-14 05:48:05,135 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE (1 of 20 remaining) [2024-11-14 05:48:05,135 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE (0 of 20 remaining) [2024-11-14 05:48:05,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-14 05:48:05,139 INFO L407 BasicCegarLoop]: Path program 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] [2024-11-14 05:48:05,211 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 05:48:05,218 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 05:48:05 BoogieIcfgContainer [2024-11-14 05:48:05,219 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 05:48:05,220 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 05:48:05,220 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 05:48:05,221 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 05:48:05,221 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:46:09" (3/4) ... [2024-11-14 05:48:05,226 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-14 05:48:05,227 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 05:48:05,228 INFO L158 Benchmark]: Toolchain (without parser) took 117410.39ms. Allocated memory was 142.6MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 118.1MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 168.0MB. Max. memory is 16.1GB. [2024-11-14 05:48:05,228 INFO L158 Benchmark]: CDTParser took 1.90ms. Allocated memory is still 142.6MB. Free memory is still 81.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:48:05,228 INFO L158 Benchmark]: CACSL2BoogieTranslator took 556.01ms. Allocated memory is still 142.6MB. Free memory was 117.8MB in the beginning and 100.3MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 05:48:05,228 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.14ms. Allocated memory is still 142.6MB. Free memory was 100.1MB in the beginning and 98.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:48:05,229 INFO L158 Benchmark]: Boogie Preprocessor took 27.99ms. Allocated memory is still 142.6MB. Free memory was 98.4MB in the beginning and 97.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:48:05,229 INFO L158 Benchmark]: RCFGBuilder took 699.81ms. Allocated memory is still 142.6MB. Free memory was 97.2MB in the beginning and 72.6MB in the end (delta: 24.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-14 05:48:05,229 INFO L158 Benchmark]: TraceAbstraction took 116067.51ms. Allocated memory was 142.6MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 71.9MB in the beginning and 1.3GB in the end (delta: -1.3GB). Peak memory consumption was 126.1MB. Max. memory is 16.1GB. [2024-11-14 05:48:05,229 INFO L158 Benchmark]: Witness Printer took 6.76ms. Allocated memory is still 1.5GB. Free memory was 1.3GB in the beginning and 1.3GB in the end (delta: 208.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:48:05,231 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.90ms. Allocated memory is still 142.6MB. Free memory is still 81.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 556.01ms. Allocated memory is still 142.6MB. Free memory was 117.8MB in the beginning and 100.3MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.14ms. Allocated memory is still 142.6MB. Free memory was 100.1MB in the beginning and 98.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.99ms. Allocated memory is still 142.6MB. Free memory was 98.4MB in the beginning and 97.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 699.81ms. Allocated memory is still 142.6MB. Free memory was 97.2MB in the beginning and 72.6MB in the end (delta: 24.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 116067.51ms. Allocated memory was 142.6MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 71.9MB in the beginning and 1.3GB in the end (delta: -1.3GB). Peak memory consumption was 126.1MB. Max. memory is 16.1GB. * Witness Printer took 6.76ms. Allocated memory is still 1.5GB. Free memory was 1.3GB in the beginning and 1.3GB in the end (delta: 208.6kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 592]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 592. Possible FailurePath: [L528] struct cell *S; [L529] int pc1 = 1; [L530] int pc4 = 1; [L531] static struct cell *t1 = ((void *)0); [L532] static struct cell *x1 = ((void *)0); [L561] struct cell* garbage; [L562] static struct cell *t4 = ((void *)0); [L563] static struct cell *x4 = ((void *)0); [L566] static int res4; [L594] S || 1 != pc1 || __VERIFIER_nondet_int() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={0:0}, garbage={0:0}, pc1=1, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L537] x1 = malloc(sizeof(*x1)) VAL [S={0:0}, garbage={0:0}, pc1=2, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L538] x1->data = 0 VAL [S={0:0}, garbage={0:0}, pc1=2, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L539] x1->next = ((void *)0) VAL [S={0:0}, garbage={0:0}, pc1=2, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={0:0}, garbage={0:0}, pc1=2, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L541] case 2: VAL [S={0:0}, garbage={0:0}, pc1=3, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L542] x1->data = 4 VAL [S={0:0}, garbage={0:0}, pc1=3, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={0:0}, garbage={0:0}, pc1=3, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L541] case 2: [L544] case 3: [L545] t1 = S VAL [S={0:0}, garbage={0:0}, pc1=4, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={0:0}, garbage={0:0}, pc1=4, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L541] case 2: [L544] case 3: [L547] case 4: VAL [S={0:0}, garbage={0:0}, pc1=5, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L548] x1->next = t1 VAL [S={0:0}, garbage={0:0}, pc1=5, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={0:0}, garbage={0:0}, pc1=5, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L541] case 2: [L544] case 3: [L547] case 4: [L550] case 5: [L552] S = x1 VAL [S={-1:0}, garbage={0:0}, pc1=6, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={-1:0}, garbage={0:0}, pc1=6, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L541] case 2: [L544] case 3: [L547] case 4: [L550] case 5: [L556] case 6: [L557] pc1 = 1 VAL [S={-1:0}, garbage={0:0}, pc1=1, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={-1:0}, garbage={0:0}, pc1=1, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND FALSE !(__VERIFIER_nondet_int()) [L598] CALL pop() [L567] pc4++ [L568] case 1: [L569] t4 = S VAL [S={-1:0}, garbage={0:0}, pc1=1, pc4=2, res4=0, t1={0:0}, t4={-1:0}, x1={-1:0}, x4={0:0}] [L598] RET pop() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={-1:0}, garbage={0:0}, pc1=1, pc4=2, res4=0, t1={0:0}, t4={-1:0}, x1={-1:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND FALSE !(__VERIFIER_nondet_int()) [L598] CALL pop() [L567] pc4++ [L568] case 1: [L571] case 2: VAL [S={-1:0}, garbage={0:0}, pc1=1, pc4=3, res4=0, t1={0:0}, t4={-1:0}, x1={-1:0}, x4={0:0}] [L598] RET pop() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={-1:0}, garbage={0:0}, pc1=1, pc4=3, res4=0, t1={0:0}, t4={-1:0}, x1={-1:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND FALSE !(__VERIFIER_nondet_int()) [L598] CALL pop() [L567] pc4++ [L568] case 1: [L571] case 2: [L575] case 3: VAL [S={-1:0}, garbage={0:0}, pc1=1, pc4=4, res4=0, t1={0:0}, t4={-1:0}, x1={-1:0}, x4={0:0}] [L576] EXPR t4->next [L576] x4 = t4->next VAL [S={-1:0}, garbage={0:0}, pc1=1, pc4=4, res4=0, t1={0:0}, t4={-1:0}, x1={-1:0}, x4={0:0}] [L598] RET pop() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={-1:0}, garbage={0:0}, pc1=1, pc4=4, res4=0, t1={0:0}, t4={-1:0}, x1={-1:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND FALSE !(__VERIFIER_nondet_int()) [L598] CALL pop() [L567] pc4++ [L568] case 1: [L571] case 2: [L575] case 3: [L578] case 4: [L580] S = x4 VAL [S={0:0}, garbage={0:0}, pc1=1, pc4=5, res4=0, t1={0:0}, t4={-1:0}, x1={-1:0}, x4={0:0}] [L598] RET pop() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={0:0}, garbage={0:0}, pc1=1, pc4=5, res4=0, t1={0:0}, t4={-1:0}, x1={-1:0}, x4={0:0}] [L594] COND FALSE !(S || 1 != pc1 || __VERIFIER_nondet_int()) [L600] COND FALSE !(\read(*garbage)) [L605] S = ((void *)0) [L606] t1 = ((void *)0) [L607] x1 = ((void *)0) [L608] t4 = ((void *)0) [L609] x4 = ((void *)0) [L610] return !!garbage; VAL [S={0:0}, \result=0, garbage={0:0}, pc1=1, pc4=5, res4=0, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 49 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 115.9s, OverallIterations: 25, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 27.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9 mSolverCounterUnknown, 3738 SdHoareTripleChecker+Valid, 17.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3738 mSDsluCounter, 7193 SdHoareTripleChecker+Invalid, 16.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5882 mSDsCounter, 271 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6624 IncrementalHoareTripleChecker+Invalid, 6904 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 271 mSolverCounterUnsat, 1311 mSDtfsCounter, 6624 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1938 GetRequests, 1378 SyntacticMatches, 13 SemanticMatches, 547 ConstructedPredicates, 0 IntricatePredicates, 6 DeprecatedPredicates, 7156 ImplicationChecksByTransitivity, 55.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7096occurred in iteration=24, InterpolantAutomatonStates: 354, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 24 MinimizatonAttempts, 3315 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 12.1s InterpolantComputationTime, 1164 NumberOfCodeBlocks, 1152 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 1545 ConstructedInterpolants, 3 QuantifiedInterpolants, 8434 SizeOfPredicates, 95 NumberOfNonLiveVariables, 2992 ConjunctsInSsa, 208 ConjunctsInUnsatCore, 56 InterpolantComputations, 8 PerfectInterpolantSequences, 1409/2216 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 3.2s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 3, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 39, DAG_INTERPRETER_EARLY_EXITS: 2, TOOLS_POST_APPLICATIONS: 78, TOOLS_POST_TIME: 2.2s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 73, TOOLS_QUANTIFIERELIM_TIME: 2.2s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 126, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 14, DOMAIN_JOIN_TIME: 0.5s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 5, DOMAIN_ISSUBSETEQ_TIME: 0.2s, DOMAIN_ISBOTTOM_APPLICATIONS: 39, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 3, LOOP_SUMMARIZER_CACHE_MISSES: 3, LOOP_SUMMARIZER_OVERALL_TIME: 1.4s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 1.4s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 5, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 480, DAG_COMPRESSION_RETAINED_NODES: 120, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-14 05:48:05,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 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_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/lockfree-3.3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 32bit --witnessprinter.graph.data.programhash 1db117ae3c729419255b5da4a7f4ecd64b2d99a167d11f22266a773c4ff13cdb --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:48:08,083 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:48:08,204 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2024-11-14 05:48:08,216 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:48:08,219 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:48:08,270 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:48:08,273 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:48:08,273 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:48:08,274 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:48:08,274 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:48:08,275 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:48:08,276 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:48:08,276 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:48:08,276 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:48:08,276 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:48:08,276 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:48:08,276 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 05:48:08,276 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 05:48:08,277 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:48:08,277 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:48:08,277 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:48:08,277 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:48:08,277 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:48:08,277 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 05:48:08,277 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 05:48:08,277 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 05:48:08,277 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:48:08,277 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 05:48:08,278 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-14 05:48:08,278 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:48:08,278 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-14 05:48:08,278 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 05:48:08,278 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:48:08,278 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:48:08,278 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:48:08,278 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-14 05:48:08,278 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:48:08,280 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:48:08,280 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:48:08,280 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:48:08,280 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:48:08,280 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-14 05:48:08,280 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-14 05:48:08,281 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:48:08,281 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:48:08,281 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_98e1f814-1550-4967-875a-623f48c46852/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1db117ae3c729419255b5da4a7f4ecd64b2d99a167d11f22266a773c4ff13cdb [2024-11-14 05:48:08,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:48:08,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:48:08,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:48:08,695 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:48:08,695 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:48:08,701 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/memsafety/lockfree-3.3.i Unable to find full path for "g++" [2024-11-14 05:48:10,717 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:48:11,115 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:48:11,119 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/sv-benchmarks/c/memsafety/lockfree-3.3.i [2024-11-14 05:48:11,139 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/data/f618cba05/e1ace6808c6243188773cf6d35990396/FLAGeeb320724 [2024-11-14 05:48:11,169 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/data/f618cba05/e1ace6808c6243188773cf6d35990396 [2024-11-14 05:48:11,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:48:11,175 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:48:11,177 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:48:11,177 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:48:11,182 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:48:11,182 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:48:11" (1/1) ... [2024-11-14 05:48:11,183 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66ddad10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:11, skipping insertion in model container [2024-11-14 05:48:11,183 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:48:11" (1/1) ... [2024-11-14 05:48:11,215 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:48:11,548 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:48:11,563 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:48:11,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:48:11,664 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:48:11,665 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:11 WrapperNode [2024-11-14 05:48:11,666 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:48:11,668 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:48:11,668 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:48:11,668 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:48:11,675 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:11" (1/1) ... [2024-11-14 05:48:11,702 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:11" (1/1) ... [2024-11-14 05:48:11,735 INFO L138 Inliner]: procedures = 128, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 131 [2024-11-14 05:48:11,738 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:48:11,739 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:48:11,739 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:48:11,739 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:48:11,746 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:11" (1/1) ... [2024-11-14 05:48:11,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:11" (1/1) ... [2024-11-14 05:48:11,754 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:11" (1/1) ... [2024-11-14 05:48:11,754 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:11" (1/1) ... [2024-11-14 05:48:11,768 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:11" (1/1) ... [2024-11-14 05:48:11,771 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:11" (1/1) ... [2024-11-14 05:48:11,773 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:11" (1/1) ... [2024-11-14 05:48:11,779 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:11" (1/1) ... [2024-11-14 05:48:11,786 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:48:11,787 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:48:11,788 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:48:11,789 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:48:11,790 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:11" (1/1) ... [2024-11-14 05:48:11,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:48:11,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:48:11,829 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:48:11,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:48:11,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-11-14 05:48:11,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 05:48:11,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:48:11,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 05:48:11,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 05:48:11,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 05:48:11,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-11-14 05:48:11,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-14 05:48:11,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:48:11,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:48:12,058 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:48:12,061 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:48:12,479 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2024-11-14 05:48:12,479 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:48:12,491 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:48:12,493 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-14 05:48:12,494 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:48:12 BoogieIcfgContainer [2024-11-14 05:48:12,494 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:48:12,497 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:48:12,497 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:48:12,506 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:48:12,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:48:11" (1/3) ... [2024-11-14 05:48:12,508 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@80277d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:48:12, skipping insertion in model container [2024-11-14 05:48:12,508 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:11" (2/3) ... [2024-11-14 05:48:12,509 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@80277d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:48:12, skipping insertion in model container [2024-11-14 05:48:12,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:48:12" (3/3) ... [2024-11-14 05:48:12,510 INFO L112 eAbstractionObserver]: Analyzing ICFG lockfree-3.3.i [2024-11-14 05:48:12,532 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:48:12,535 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG lockfree-3.3.i that has 1 procedures, 64 locations, 1 initial locations, 2 loop locations, and 20 error locations. [2024-11-14 05:48:12,609 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:48:12,633 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;@1fb6ebd5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:48:12,633 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-14 05:48:12,639 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 43 states have (on average 1.930232558139535) internal successors, (83), 63 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:12,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-14 05:48:12,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:48:12,647 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-14 05:48:12,648 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:48:12,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:48:12,655 INFO L85 PathProgramCache]: Analyzing trace with hash 28818081, now seen corresponding path program 1 times [2024-11-14 05:48:12,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:48:12,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1820931584] [2024-11-14 05:48:12,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:12,669 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 05:48:12,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:48:12,676 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:12,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:12,769 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-14 05:48:12,772 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:12,792 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 05:48:12,792 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:48:12,793 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:48:12,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1820931584] [2024-11-14 05:48:12,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1820931584] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:48:12,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:48:12,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:48:12,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64004693] [2024-11-14 05:48:12,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:48:12,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 05:48:12,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:48:12,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 05:48:12,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 05:48:12,837 INFO L87 Difference]: Start difference. First operand has 64 states, 43 states have (on average 1.930232558139535) internal successors, (83), 63 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:12,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:48:12,856 INFO L93 Difference]: Finished difference Result 64 states and 81 transitions. [2024-11-14 05:48:12,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 05:48:12,858 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-14 05:48:12,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:48:12,867 INFO L225 Difference]: With dead ends: 64 [2024-11-14 05:48:12,867 INFO L226 Difference]: Without dead ends: 62 [2024-11-14 05:48:12,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 05:48:12,873 INFO L432 NwaCegarLoop]: 81 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, 81 SdHoareTripleChecker+Invalid, 0 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 05:48:12,875 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:48:12,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-14 05:48:12,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-11-14 05:48:12,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 42 states have (on average 1.880952380952381) internal successors, (79), 61 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:12,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 79 transitions. [2024-11-14 05:48:12,922 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 79 transitions. Word has length 5 [2024-11-14 05:48:12,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:48:12,922 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 79 transitions. [2024-11-14 05:48:12,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:12,922 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 79 transitions. [2024-11-14 05:48:12,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-14 05:48:12,923 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:48:12,923 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:48:12,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:13,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:13,124 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:48:13,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:48:13,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1805896715, now seen corresponding path program 1 times [2024-11-14 05:48:13,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:48:13,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1538520080] [2024-11-14 05:48:13,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:13,125 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 05:48:13,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:48:13,131 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:13,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:13,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:13,223 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 05:48:13,224 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:13,369 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 05:48:13,369 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:48:13,369 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:48:13,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1538520080] [2024-11-14 05:48:13,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1538520080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:48:13,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:48:13,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:48:13,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319300091] [2024-11-14 05:48:13,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:48:13,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:48:13,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:48:13,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:48:13,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:48:13,378 INFO L87 Difference]: Start difference. First operand 62 states and 79 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:13,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:48:13,518 INFO L93 Difference]: Finished difference Result 101 states and 127 transitions. [2024-11-14 05:48:13,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:48:13,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-14 05:48:13,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:48:13,520 INFO L225 Difference]: With dead ends: 101 [2024-11-14 05:48:13,521 INFO L226 Difference]: Without dead ends: 101 [2024-11-14 05:48:13,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:48:13,523 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 45 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:48:13,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 209 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:48:13,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-14 05:48:13,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 81. [2024-11-14 05:48:13,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 61 states have (on average 1.8524590163934427) internal successors, (113), 80 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:13,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 113 transitions. [2024-11-14 05:48:13,545 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 113 transitions. Word has length 7 [2024-11-14 05:48:13,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:48:13,545 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 113 transitions. [2024-11-14 05:48:13,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:13,546 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 113 transitions. [2024-11-14 05:48:13,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-14 05:48:13,546 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:48:13,546 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:48:13,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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)] Forceful destruction successful, exit code 0 [2024-11-14 05:48:13,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:13,747 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:48:13,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:48:13,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1805956297, now seen corresponding path program 1 times [2024-11-14 05:48:13,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:48:13,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1905865290] [2024-11-14 05:48:13,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:13,749 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 05:48:13,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:48:13,751 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:13,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:13,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 05:48:13,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:13,906 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 05:48:13,907 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:48:13,907 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:48:13,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1905865290] [2024-11-14 05:48:13,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1905865290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:48:13,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:48:13,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:48:13,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732293362] [2024-11-14 05:48:13,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:48:13,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:48:13,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:48:13,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:48:13,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:48:13,913 INFO L87 Difference]: Start difference. First operand 81 states and 113 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:13,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:48:13,982 INFO L93 Difference]: Finished difference Result 147 states and 211 transitions. [2024-11-14 05:48:13,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:48:13,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-14 05:48:13,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:48:13,985 INFO L225 Difference]: With dead ends: 147 [2024-11-14 05:48:13,985 INFO L226 Difference]: Without dead ends: 147 [2024-11-14 05:48:13,985 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 05:48:13,986 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 62 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:48:13,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 138 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:48:13,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-14 05:48:13,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 125. [2024-11-14 05:48:13,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 105 states have (on average 1.8571428571428572) internal successors, (195), 124 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:13,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 195 transitions. [2024-11-14 05:48:13,997 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 195 transitions. Word has length 7 [2024-11-14 05:48:13,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:48:13,998 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 195 transitions. [2024-11-14 05:48:13,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:13,998 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 195 transitions. [2024-11-14 05:48:13,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-14 05:48:13,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:48:13,998 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:48:14,002 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:14,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:14,201 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:48:14,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:48:14,202 INFO L85 PathProgramCache]: Analyzing trace with hash 150012941, now seen corresponding path program 1 times [2024-11-14 05:48:14,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:48:14,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [68149798] [2024-11-14 05:48:14,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:14,202 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 05:48:14,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:48:14,207 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:14,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:14,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 05:48:14,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:14,313 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 05:48:14,323 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 05:48:14,324 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:48:14,324 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:48:14,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [68149798] [2024-11-14 05:48:14,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [68149798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:48:14,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:48:14,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:48:14,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181327874] [2024-11-14 05:48:14,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:48:14,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:48:14,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:48:14,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:48:14,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:48:14,328 INFO L87 Difference]: Start difference. First operand 125 states and 195 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:14,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:48:14,541 INFO L93 Difference]: Finished difference Result 200 states and 307 transitions. [2024-11-14 05:48:14,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:48:14,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-14 05:48:14,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:48:14,545 INFO L225 Difference]: With dead ends: 200 [2024-11-14 05:48:14,548 INFO L226 Difference]: Without dead ends: 200 [2024-11-14 05:48:14,548 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 05:48:14,549 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 67 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:48:14,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 174 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:48:14,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-11-14 05:48:14,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 179. [2024-11-14 05:48:14,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 161 states have (on average 1.8198757763975155) internal successors, (293), 178 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:14,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 293 transitions. [2024-11-14 05:48:14,576 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 293 transitions. Word has length 8 [2024-11-14 05:48:14,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:48:14,577 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 293 transitions. [2024-11-14 05:48:14,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:14,577 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 293 transitions. [2024-11-14 05:48:14,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-14 05:48:14,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:48:14,578 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:48:14,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:14,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:14,780 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:48:14,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:48:14,781 INFO L85 PathProgramCache]: Analyzing trace with hash 150012942, now seen corresponding path program 1 times [2024-11-14 05:48:14,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:48:14,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [416411437] [2024-11-14 05:48:14,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:14,781 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 05:48:14,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:48:14,785 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:14,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:14,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 05:48:14,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:14,909 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 6 treesize of output 5 [2024-11-14 05:48:14,925 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 05:48:14,925 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:48:14,925 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:48:14,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [416411437] [2024-11-14 05:48:14,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [416411437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:48:14,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:48:14,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:48:14,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602642493] [2024-11-14 05:48:14,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:48:14,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:48:14,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:48:14,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:48:14,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:48:14,928 INFO L87 Difference]: Start difference. First operand 179 states and 293 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:15,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:48:15,097 INFO L93 Difference]: Finished difference Result 252 states and 401 transitions. [2024-11-14 05:48:15,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:48:15,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-14 05:48:15,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:48:15,101 INFO L225 Difference]: With dead ends: 252 [2024-11-14 05:48:15,101 INFO L226 Difference]: Without dead ends: 252 [2024-11-14 05:48:15,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 05:48:15,102 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 66 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:48:15,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 180 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:48:15,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-11-14 05:48:15,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 233. [2024-11-14 05:48:15,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 217 states have (on average 1.7834101382488479) internal successors, (387), 232 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:15,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 387 transitions. [2024-11-14 05:48:15,129 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 387 transitions. Word has length 8 [2024-11-14 05:48:15,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:48:15,129 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 387 transitions. [2024-11-14 05:48:15,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:15,130 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 387 transitions. [2024-11-14 05:48:15,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-14 05:48:15,130 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:48:15,130 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:48:15,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:15,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:15,331 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:48:15,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:48:15,331 INFO L85 PathProgramCache]: Analyzing trace with hash 150068963, now seen corresponding path program 1 times [2024-11-14 05:48:15,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:48:15,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [808241182] [2024-11-14 05:48:15,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:15,332 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:48:15,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:48:15,334 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:15,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:15,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 05:48:15,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:15,407 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 05:48:15,408 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:48:15,408 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:48:15,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [808241182] [2024-11-14 05:48:15,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [808241182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:48:15,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:48:15,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:48:15,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599673697] [2024-11-14 05:48:15,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:48:15,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:48:15,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:48:15,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:48:15,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:48:15,410 INFO L87 Difference]: Start difference. First operand 233 states and 387 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:15,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:48:15,545 INFO L93 Difference]: Finished difference Result 253 states and 401 transitions. [2024-11-14 05:48:15,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:48:15,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-14 05:48:15,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:48:15,548 INFO L225 Difference]: With dead ends: 253 [2024-11-14 05:48:15,548 INFO L226 Difference]: Without dead ends: 250 [2024-11-14 05:48:15,548 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 05:48:15,550 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 63 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:48:15,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 115 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:48:15,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-11-14 05:48:15,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 234. [2024-11-14 05:48:15,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 218 states have (on average 1.7660550458715596) internal successors, (385), 233 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:15,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 385 transitions. [2024-11-14 05:48:15,575 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 385 transitions. Word has length 8 [2024-11-14 05:48:15,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:48:15,575 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 385 transitions. [2024-11-14 05:48:15,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:15,576 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 385 transitions. [2024-11-14 05:48:15,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-14 05:48:15,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:48:15,576 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:48:15,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:15,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:15,778 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:48:15,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:48:15,778 INFO L85 PathProgramCache]: Analyzing trace with hash 355441878, now seen corresponding path program 1 times [2024-11-14 05:48:15,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:48:15,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [543762220] [2024-11-14 05:48:15,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:15,779 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 05:48:15,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:48:15,783 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:15,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:15,834 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 05:48:15,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:15,866 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 05:48:15,866 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:48:15,866 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:48:15,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [543762220] [2024-11-14 05:48:15,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [543762220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:48:15,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:48:15,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:48:15,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580871359] [2024-11-14 05:48:15,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:48:15,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:48:15,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:48:15,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:48:15,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:48:15,869 INFO L87 Difference]: Start difference. First operand 234 states and 385 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:15,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:48:15,916 INFO L93 Difference]: Finished difference Result 213 states and 323 transitions. [2024-11-14 05:48:15,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:48:15,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-14 05:48:15,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:48:15,918 INFO L225 Difference]: With dead ends: 213 [2024-11-14 05:48:15,918 INFO L226 Difference]: Without dead ends: 213 [2024-11-14 05:48:15,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:48:15,919 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 46 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:48:15,920 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 198 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:48:15,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-14 05:48:15,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 190. [2024-11-14 05:48:15,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 178 states have (on average 1.7191011235955056) internal successors, (306), 189 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:15,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 306 transitions. [2024-11-14 05:48:15,928 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 306 transitions. Word has length 9 [2024-11-14 05:48:15,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:48:15,928 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 306 transitions. [2024-11-14 05:48:15,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:15,929 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 306 transitions. [2024-11-14 05:48:15,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-14 05:48:15,929 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:48:15,929 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:48:15,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:16,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:16,130 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:48:16,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:48:16,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1814847889, now seen corresponding path program 1 times [2024-11-14 05:48:16,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:48:16,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [361319690] [2024-11-14 05:48:16,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:16,132 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 05:48:16,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:48:16,134 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:16,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:16,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 05:48:16,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:16,216 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 05:48:16,217 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:48:16,217 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:48:16,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [361319690] [2024-11-14 05:48:16,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [361319690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:48:16,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:48:16,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:48:16,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447156116] [2024-11-14 05:48:16,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:48:16,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:48:16,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:48:16,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:48:16,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:48:16,218 INFO L87 Difference]: Start difference. First operand 190 states and 306 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:16,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:48:16,255 INFO L93 Difference]: Finished difference Result 284 states and 434 transitions. [2024-11-14 05:48:16,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:48:16,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-14 05:48:16,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:48:16,257 INFO L225 Difference]: With dead ends: 284 [2024-11-14 05:48:16,258 INFO L226 Difference]: Without dead ends: 284 [2024-11-14 05:48:16,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:48:16,258 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 38 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:48:16,259 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 192 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:48:16,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2024-11-14 05:48:16,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 268. [2024-11-14 05:48:16,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 256 states have (on average 1.6328125) internal successors, (418), 267 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:16,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 418 transitions. [2024-11-14 05:48:16,269 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 418 transitions. Word has length 10 [2024-11-14 05:48:16,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:48:16,269 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 418 transitions. [2024-11-14 05:48:16,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:16,269 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 418 transitions. [2024-11-14 05:48:16,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-14 05:48:16,270 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:48:16,270 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:48:16,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:16,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:16,473 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:48:16,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:48:16,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1831299127, now seen corresponding path program 1 times [2024-11-14 05:48:16,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:48:16,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854150900] [2024-11-14 05:48:16,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:16,474 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 05:48:16,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:48:16,475 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:16,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 (10)] Waiting until timeout for monitored process [2024-11-14 05:48:16,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:16,565 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 05:48:16,567 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:16,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:48:16,625 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:16,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:48:16,716 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:48:16,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854150900] [2024-11-14 05:48:16,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [854150900] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:16,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2023904284] [2024-11-14 05:48:16,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:16,717 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:48:16,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:48:16,722 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:48:16,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2024-11-14 05:48:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:16,839 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 05:48:16,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:16,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:48:16,844 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:48:16,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2023904284] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:48:16,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-14 05:48:16,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-11-14 05:48:16,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732119060] [2024-11-14 05:48:16,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:48:16,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:48:16,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:48:16,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:48:16,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-14 05:48:16,847 INFO L87 Difference]: Start difference. First operand 268 states and 418 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:16,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:48:16,860 INFO L93 Difference]: Finished difference Result 280 states and 430 transitions. [2024-11-14 05:48:16,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:48:16,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-14 05:48:16,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:48:16,863 INFO L225 Difference]: With dead ends: 280 [2024-11-14 05:48:16,863 INFO L226 Difference]: Without dead ends: 280 [2024-11-14 05:48:16,863 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-14 05:48:16,864 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 0 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:48:16,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:48:16,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-11-14 05:48:16,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 278. [2024-11-14 05:48:16,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 266 states have (on average 1.6090225563909775) internal successors, (428), 277 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:16,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 428 transitions. [2024-11-14 05:48:16,883 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 428 transitions. Word has length 16 [2024-11-14 05:48:16,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:48:16,883 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 428 transitions. [2024-11-14 05:48:16,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:16,884 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 428 transitions. [2024-11-14 05:48:16,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-14 05:48:16,886 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:48:16,886 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:48:16,889 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2024-11-14 05:48:17,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 (10)] Forceful destruction successful, exit code 0 [2024-11-14 05:48:17,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:17,289 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:48:17,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:48:17,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1833146169, now seen corresponding path program 1 times [2024-11-14 05:48:17,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:48:17,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281435585] [2024-11-14 05:48:17,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:17,290 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 05:48:17,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:48:17,295 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:17,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:17,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 05:48:17,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:17,446 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 05:48:17,447 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:17,516 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 05:48:17,516 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:48:17,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281435585] [2024-11-14 05:48:17,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281435585] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:17,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [261463019] [2024-11-14 05:48:17,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:17,517 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:48:17,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:48:17,521 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:48:17,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2024-11-14 05:48:17,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:17,663 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 05:48:17,665 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:17,710 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 05:48:17,712 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:17,752 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 05:48:17,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [261463019] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:17,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734956622] [2024-11-14 05:48:17,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:17,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:48:17,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:48:17,757 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:48:17,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-14 05:48:17,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:17,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 05:48:17,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:17,906 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 05:48:17,906 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:17,948 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 05:48:17,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734956622] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:17,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:48:17,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2024-11-14 05:48:17,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407872995] [2024-11-14 05:48:17,949 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:48:17,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 05:48:17,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:48:17,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 05:48:17,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-14 05:48:17,951 INFO L87 Difference]: Start difference. First operand 278 states and 428 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:18,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:48:18,088 INFO L93 Difference]: Finished difference Result 573 states and 833 transitions. [2024-11-14 05:48:18,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 05:48:18,089 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-14 05:48:18,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:48:18,092 INFO L225 Difference]: With dead ends: 573 [2024-11-14 05:48:18,092 INFO L226 Difference]: Without dead ends: 573 [2024-11-14 05:48:18,092 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-14 05:48:18,093 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 329 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:48:18,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 416 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:48:18,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2024-11-14 05:48:18,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 532. [2024-11-14 05:48:18,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 520 states have (on average 1.5692307692307692) internal successors, (816), 531 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:18,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 816 transitions. [2024-11-14 05:48:18,114 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 816 transitions. Word has length 16 [2024-11-14 05:48:18,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:48:18,114 INFO L471 AbstractCegarLoop]: Abstraction has 532 states and 816 transitions. [2024-11-14 05:48:18,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:18,115 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 816 transitions. [2024-11-14 05:48:18,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-14 05:48:18,115 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:48:18,116 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:48:18,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2024-11-14 05:48:18,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-14 05:48:18,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:18,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:18,717 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:48:18,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:48:18,718 INFO L85 PathProgramCache]: Analyzing trace with hash -91455393, now seen corresponding path program 1 times [2024-11-14 05:48:18,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:48:18,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1838999111] [2024-11-14 05:48:18,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:18,718 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 05:48:18,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:48:18,720 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:18,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:18,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:18,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 05:48:18,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:18,856 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:48:18,857 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:18,907 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:48:18,907 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:48:18,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1838999111] [2024-11-14 05:48:18,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1838999111] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:18,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [848989290] [2024-11-14 05:48:18,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:18,908 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:48:18,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:48:18,910 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:48:18,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2024-11-14 05:48:19,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:19,034 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 05:48:19,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:19,077 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:48:19,077 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:19,114 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:48:19,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [848989290] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:19,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760443501] [2024-11-14 05:48:19,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:19,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:48:19,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:48:19,117 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:48:19,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-14 05:48:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:19,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:48:19,202 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:19,258 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:48:19,258 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:19,337 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:48:19,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760443501] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:19,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:48:19,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2024-11-14 05:48:19,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392723620] [2024-11-14 05:48:19,338 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:48:19,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 05:48:19,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:48:19,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 05:48:19,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-14 05:48:19,340 INFO L87 Difference]: Start difference. First operand 532 states and 816 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:19,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:48:19,619 INFO L93 Difference]: Finished difference Result 1427 states and 2147 transitions. [2024-11-14 05:48:19,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-14 05:48:19,620 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-14 05:48:19,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:48:19,627 INFO L225 Difference]: With dead ends: 1427 [2024-11-14 05:48:19,627 INFO L226 Difference]: Without dead ends: 1427 [2024-11-14 05:48:19,628 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2024-11-14 05:48:19,629 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 303 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:48:19,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 726 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:48:19,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2024-11-14 05:48:19,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1245. [2024-11-14 05:48:19,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1245 states, 1233 states have (on average 1.5417680454176805) internal successors, (1901), 1244 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:19,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 1901 transitions. [2024-11-14 05:48:19,704 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 1901 transitions. Word has length 16 [2024-11-14 05:48:19,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:48:19,705 INFO L471 AbstractCegarLoop]: Abstraction has 1245 states and 1901 transitions. [2024-11-14 05:48:19,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:19,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 1901 transitions. [2024-11-14 05:48:19,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:48:19,707 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:48:19,708 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:48:19,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2024-11-14 05:48:19,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:20,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-14 05:48:20,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:48:20,309 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:48:20,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:48:20,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1430451048, now seen corresponding path program 1 times [2024-11-14 05:48:20,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:48:20,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196495849] [2024-11-14 05:48:20,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:20,310 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 05:48:20,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:48:20,311 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:20,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:20,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 05:48:20,373 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:20,485 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:48:20,485 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:20,588 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:48:20,588 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:48:20,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196495849] [2024-11-14 05:48:20,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196495849] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:20,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [894534652] [2024-11-14 05:48:20,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:20,588 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:48:20,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:48:20,591 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:48:20,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2024-11-14 05:48:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:20,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 05:48:20,728 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:20,816 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:48:20,816 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:20,909 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:48:20,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [894534652] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:20,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842473756] [2024-11-14 05:48:20,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:20,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:48:20,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:48:20,912 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:48:20,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-14 05:48:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:20,992 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 05:48:20,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:21,094 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:48:21,095 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:21,184 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:48:21,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842473756] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:21,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:48:21,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3, 3, 3, 3] total 3 [2024-11-14 05:48:21,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207435267] [2024-11-14 05:48:21,185 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:48:21,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:48:21,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:48:21,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:48:21,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:48:21,186 INFO L87 Difference]: Start difference. First operand 1245 states and 1901 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:21,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:48:21,304 INFO L93 Difference]: Finished difference Result 1447 states and 2124 transitions. [2024-11-14 05:48:21,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:48:21,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:48:21,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:48:21,311 INFO L225 Difference]: With dead ends: 1447 [2024-11-14 05:48:21,311 INFO L226 Difference]: Without dead ends: 1447 [2024-11-14 05:48:21,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:48:21,312 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 91 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:48:21,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 202 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:48:21,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2024-11-14 05:48:21,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 1280. [2024-11-14 05:48:21,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 1268 states have (on average 1.4952681388012619) internal successors, (1896), 1279 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:21,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1896 transitions. [2024-11-14 05:48:21,349 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1896 transitions. Word has length 24 [2024-11-14 05:48:21,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:48:21,349 INFO L471 AbstractCegarLoop]: Abstraction has 1280 states and 1896 transitions. [2024-11-14 05:48:21,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:21,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1896 transitions. [2024-11-14 05:48:21,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-14 05:48:21,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:48:21,356 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:48:21,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-14 05:48:21,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2024-11-14 05:48:21,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:21,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:21,957 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:48:21,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:48:21,958 INFO L85 PathProgramCache]: Analyzing trace with hash 135165206, now seen corresponding path program 1 times [2024-11-14 05:48:21,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:48:21,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [291477283] [2024-11-14 05:48:21,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:21,958 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 05:48:21,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:48:21,962 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:21,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:22,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:22,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 05:48:22,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:22,108 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 05:48:22,108 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:22,144 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 05:48:22,145 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:48:22,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [291477283] [2024-11-14 05:48:22,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [291477283] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:22,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [285541228] [2024-11-14 05:48:22,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:22,145 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:48:22,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:48:22,147 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:48:22,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2024-11-14 05:48:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:22,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 05:48:22,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:22,335 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 05:48:22,335 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:22,372 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 05:48:22,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [285541228] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:22,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740033068] [2024-11-14 05:48:22,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:22,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:48:22,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:48:22,376 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:48:22,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-14 05:48:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:22,474 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:48:22,476 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:22,530 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 05:48:22,530 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:22,622 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 05:48:22,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740033068] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:22,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:48:22,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2024-11-14 05:48:22,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197979944] [2024-11-14 05:48:22,622 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:48:22,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 05:48:22,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:48:22,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 05:48:22,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-14 05:48:22,624 INFO L87 Difference]: Start difference. First operand 1280 states and 1896 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:22,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:48:22,910 INFO L93 Difference]: Finished difference Result 1397 states and 1963 transitions. [2024-11-14 05:48:22,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-14 05:48:22,910 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-14 05:48:22,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:48:22,916 INFO L225 Difference]: With dead ends: 1397 [2024-11-14 05:48:22,916 INFO L226 Difference]: Without dead ends: 1397 [2024-11-14 05:48:22,916 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2024-11-14 05:48:22,918 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 192 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:48:22,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 956 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:48:22,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1397 states. [2024-11-14 05:48:22,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1397 to 1241. [2024-11-14 05:48:22,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1241 states, 1229 states have (on average 1.4792514239218877) internal successors, (1818), 1240 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:22,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1818 transitions. [2024-11-14 05:48:22,966 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1818 transitions. Word has length 27 [2024-11-14 05:48:22,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:48:22,968 INFO L471 AbstractCegarLoop]: Abstraction has 1241 states and 1818 transitions. [2024-11-14 05:48:22,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:22,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1818 transitions. [2024-11-14 05:48:22,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-14 05:48:22,969 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:48:22,969 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:48:22,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2024-11-14 05:48:23,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-14 05:48:23,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:23,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:23,572 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:48:23,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:48:23,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1930612015, now seen corresponding path program 1 times [2024-11-14 05:48:23,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:48:23,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [891590017] [2024-11-14 05:48:23,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:23,573 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 05:48:23,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:48:23,577 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:23,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:23,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:23,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:48:23,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:23,791 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 32 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 05:48:23,792 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:23,883 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 32 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 05:48:23,883 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:48:23,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [891590017] [2024-11-14 05:48:23,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [891590017] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:23,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [969669168] [2024-11-14 05:48:23,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:23,884 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:48:23,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:48:23,886 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:48:23,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2024-11-14 05:48:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:24,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:48:24,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:24,288 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 32 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-14 05:48:24,289 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:24,426 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 32 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-14 05:48:24,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [969669168] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:24,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169284980] [2024-11-14 05:48:24,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:24,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:48:24,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:48:24,429 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:48:24,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-14 05:48:24,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:24,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:48:24,569 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:24,692 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 32 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-14 05:48:24,692 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:24,800 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 32 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-14 05:48:24,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169284980] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:24,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:48:24,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2024-11-14 05:48:24,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264397415] [2024-11-14 05:48:24,801 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:48:24,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-14 05:48:24,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:48:24,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-14 05:48:24,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-14 05:48:24,802 INFO L87 Difference]: Start difference. First operand 1241 states and 1818 transitions. Second operand has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:25,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:48:25,779 INFO L93 Difference]: Finished difference Result 2520 states and 3652 transitions. [2024-11-14 05:48:25,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-14 05:48:25,780 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-14 05:48:25,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:48:25,791 INFO L225 Difference]: With dead ends: 2520 [2024-11-14 05:48:25,791 INFO L226 Difference]: Without dead ends: 2520 [2024-11-14 05:48:25,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=364, Invalid=1276, Unknown=0, NotChecked=0, Total=1640 [2024-11-14 05:48:25,793 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 656 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:48:25,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 1217 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 05:48:25,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2520 states. [2024-11-14 05:48:25,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2520 to 2467. [2024-11-14 05:48:25,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2467 states, 2455 states have (on average 1.4806517311608962) internal successors, (3635), 2466 states have internal predecessors, (3635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:25,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 3635 transitions. [2024-11-14 05:48:25,858 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 3635 transitions. Word has length 40 [2024-11-14 05:48:25,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:48:25,859 INFO L471 AbstractCegarLoop]: Abstraction has 2467 states and 3635 transitions. [2024-11-14 05:48:25,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:25,860 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 3635 transitions. [2024-11-14 05:48:25,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-14 05:48:25,861 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:48:25,861 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:48:25,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2024-11-14 05:48:26,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:26,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-14 05:48:26,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:48:26,465 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:48:26,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:48:26,466 INFO L85 PathProgramCache]: Analyzing trace with hash 577771244, now seen corresponding path program 1 times [2024-11-14 05:48:26,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:48:26,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [916678271] [2024-11-14 05:48:26,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:26,467 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 05:48:26,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:48:26,469 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:26,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:26,588 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 05:48:26,590 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:26,678 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 51 proven. 17 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-14 05:48:26,678 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:26,877 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 51 proven. 17 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-14 05:48:26,877 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:48:26,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [916678271] [2024-11-14 05:48:26,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [916678271] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:26,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1508965861] [2024-11-14 05:48:26,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:26,878 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:48:26,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:48:26,881 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:48:26,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2024-11-14 05:48:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:27,092 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 05:48:27,093 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:27,165 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 51 proven. 17 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-14 05:48:27,165 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:27,278 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 51 proven. 17 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-14 05:48:27,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1508965861] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:27,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106146035] [2024-11-14 05:48:27,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:27,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:48:27,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:48:27,281 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:48:27,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-14 05:48:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:27,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:48:27,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:27,506 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 62 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-14 05:48:27,506 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:27,592 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-14 05:48:27,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106146035] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:48:27,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2024-11-14 05:48:27,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6, 6, 6, 6, 7] total 20 [2024-11-14 05:48:27,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118956397] [2024-11-14 05:48:27,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:48:27,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 05:48:27,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:48:27,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 05:48:27,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2024-11-14 05:48:27,594 INFO L87 Difference]: Start difference. First operand 2467 states and 3635 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:27,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:48:27,753 INFO L93 Difference]: Finished difference Result 3798 states and 5507 transitions. [2024-11-14 05:48:27,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 05:48:27,753 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-14 05:48:27,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:48:27,769 INFO L225 Difference]: With dead ends: 3798 [2024-11-14 05:48:27,769 INFO L226 Difference]: Without dead ends: 3798 [2024-11-14 05:48:27,769 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2024-11-14 05:48:27,770 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 175 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:48:27,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 299 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:48:27,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3798 states. [2024-11-14 05:48:27,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3798 to 3318. [2024-11-14 05:48:27,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3318 states, 3306 states have (on average 1.4546279491833032) internal successors, (4809), 3317 states have internal predecessors, (4809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:27,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3318 states to 3318 states and 4809 transitions. [2024-11-14 05:48:27,862 INFO L78 Accepts]: Start accepts. Automaton has 3318 states and 4809 transitions. Word has length 51 [2024-11-14 05:48:27,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:48:27,862 INFO L471 AbstractCegarLoop]: Abstraction has 3318 states and 4809 transitions. [2024-11-14 05:48:27,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:27,863 INFO L276 IsEmpty]: Start isEmpty. Operand 3318 states and 4809 transitions. [2024-11-14 05:48:27,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-14 05:48:27,864 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:48:27,864 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:48:27,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-14 05:48:28,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (28)] Ended with exit code 0 [2024-11-14 05:48:28,268 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:28,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:28,468 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:48:28,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:48:28,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1740419342, now seen corresponding path program 1 times [2024-11-14 05:48:28,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:48:28,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169618090] [2024-11-14 05:48:28,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:28,469 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 05:48:28,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:48:28,473 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:28,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 (30)] Waiting until timeout for monitored process [2024-11-14 05:48:28,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:28,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 05:48:28,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:28,699 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 43 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:48:28,700 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:28,947 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 43 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:48:28,947 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:48:28,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169618090] [2024-11-14 05:48:28,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [169618090] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:28,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1365598303] [2024-11-14 05:48:28,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:28,947 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:48:28,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:48:28,950 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:48:28,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2024-11-14 05:48:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:29,164 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 05:48:29,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:29,257 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 43 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:48:29,257 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:29,408 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 43 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:48:29,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1365598303] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:29,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235724247] [2024-11-14 05:48:29,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:29,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:48:29,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:48:29,411 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:48:29,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-14 05:48:29,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:29,532 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 05:48:29,534 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:29,672 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 19 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:48:29,673 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:29,909 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 19 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:48:29,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235724247] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:29,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:48:29,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 8, 8] total 25 [2024-11-14 05:48:29,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521223268] [2024-11-14 05:48:29,910 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:48:29,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-14 05:48:29,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:48:29,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-14 05:48:29,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=531, Unknown=0, NotChecked=0, Total=650 [2024-11-14 05:48:29,912 INFO L87 Difference]: Start difference. First operand 3318 states and 4809 transitions. Second operand has 26 states, 26 states have (on average 6.5) internal successors, (169), 25 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:31,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:48:31,771 INFO L93 Difference]: Finished difference Result 16068 states and 22775 transitions. [2024-11-14 05:48:31,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-14 05:48:31,771 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.5) internal successors, (169), 25 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-14 05:48:31,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:48:31,832 INFO L225 Difference]: With dead ends: 16068 [2024-11-14 05:48:31,832 INFO L226 Difference]: Without dead ends: 16068 [2024-11-14 05:48:31,833 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1170 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=884, Invalid=3808, Unknown=0, NotChecked=0, Total=4692 [2024-11-14 05:48:31,834 INFO L432 NwaCegarLoop]: 295 mSDtfsCounter, 3470 mSDsluCounter, 2514 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3470 SdHoareTripleChecker+Valid, 2809 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:48:31,834 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3470 Valid, 2809 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 05:48:31,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16068 states. [2024-11-14 05:48:32,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16068 to 15045. [2024-11-14 05:48:32,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15045 states, 15033 states have (on average 1.4480808887115013) internal successors, (21769), 15044 states have internal predecessors, (21769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:32,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15045 states to 15045 states and 21769 transitions. [2024-11-14 05:48:32,202 INFO L78 Accepts]: Start accepts. Automaton has 15045 states and 21769 transitions. Word has length 51 [2024-11-14 05:48:32,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:48:32,203 INFO L471 AbstractCegarLoop]: Abstraction has 15045 states and 21769 transitions. [2024-11-14 05:48:32,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.5) internal successors, (169), 25 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:32,203 INFO L276 IsEmpty]: Start isEmpty. Operand 15045 states and 21769 transitions. [2024-11-14 05:48:32,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-14 05:48:32,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:48:32,204 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 3, 3, 3, 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 05:48:32,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-14 05:48:32,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2024-11-14 05:48:32,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 (30)] Ended with exit code 0 [2024-11-14 05:48:32,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:32,806 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:48:32,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:48:32,806 INFO L85 PathProgramCache]: Analyzing trace with hash 504877703, now seen corresponding path program 1 times [2024-11-14 05:48:32,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:48:32,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329817644] [2024-11-14 05:48:32,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:32,807 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 05:48:32,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:48:32,810 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:32,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 (33)] Waiting until timeout for monitored process [2024-11-14 05:48:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:32,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:48:32,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:32,984 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 38 proven. 17 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-14 05:48:32,985 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:33,038 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 38 proven. 17 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-14 05:48:33,039 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:48:33,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1329817644] [2024-11-14 05:48:33,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1329817644] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:33,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [367839565] [2024-11-14 05:48:33,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:33,039 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:48:33,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:48:33,043 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:48:33,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2024-11-14 05:48:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:33,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:48:33,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:33,311 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 38 proven. 17 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-14 05:48:33,312 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:33,358 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 38 proven. 17 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-14 05:48:33,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [367839565] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:33,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187153105] [2024-11-14 05:48:33,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:33,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:48:33,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:48:33,361 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:48:33,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-14 05:48:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:33,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:48:33,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:33,574 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 38 proven. 17 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-14 05:48:33,574 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:33,652 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-14 05:48:33,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187153105] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:33,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:48:33,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 8, 7] total 14 [2024-11-14 05:48:33,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298165082] [2024-11-14 05:48:33,652 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:48:33,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-14 05:48:33,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:48:33,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-14 05:48:33,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-14 05:48:33,654 INFO L87 Difference]: Start difference. First operand 15045 states and 21769 transitions. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:33,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:48:33,953 INFO L93 Difference]: Finished difference Result 17699 states and 25346 transitions. [2024-11-14 05:48:33,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-14 05:48:33,954 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-14 05:48:33,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:48:33,996 INFO L225 Difference]: With dead ends: 17699 [2024-11-14 05:48:33,996 INFO L226 Difference]: Without dead ends: 17699 [2024-11-14 05:48:33,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2024-11-14 05:48:33,997 INFO L432 NwaCegarLoop]: 164 mSDtfsCounter, 406 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:48:33,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 1146 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:48:34,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17699 states. [2024-11-14 05:48:34,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17699 to 16573. [2024-11-14 05:48:34,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16573 states, 16561 states have (on average 1.4639212607934304) internal successors, (24244), 16572 states have internal predecessors, (24244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:34,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16573 states to 16573 states and 24244 transitions. [2024-11-14 05:48:34,381 INFO L78 Accepts]: Start accepts. Automaton has 16573 states and 24244 transitions. Word has length 51 [2024-11-14 05:48:34,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:48:34,382 INFO L471 AbstractCegarLoop]: Abstraction has 16573 states and 24244 transitions. [2024-11-14 05:48:34,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:34,383 INFO L276 IsEmpty]: Start isEmpty. Operand 16573 states and 24244 transitions. [2024-11-14 05:48:34,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-14 05:48:34,386 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:48:34,386 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:48:34,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 (33)] Ended with exit code 0 [2024-11-14 05:48:34,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (34)] Ended with exit code 0 [2024-11-14 05:48:34,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-14 05:48:34,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:48:34,987 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:48:34,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:48:34,988 INFO L85 PathProgramCache]: Analyzing trace with hash -950757121, now seen corresponding path program 1 times [2024-11-14 05:48:34,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:48:34,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1404148957] [2024-11-14 05:48:34,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:34,988 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 05:48:34,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:48:34,990 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:34,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 (36)] Waiting until timeout for monitored process [2024-11-14 05:48:35,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:35,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-14 05:48:35,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:35,288 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 23 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:48:35,288 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:35,887 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 23 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:48:35,887 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:48:35,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1404148957] [2024-11-14 05:48:35,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1404148957] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:35,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [25762385] [2024-11-14 05:48:35,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:35,888 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:48:35,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:48:35,893 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:48:35,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2024-11-14 05:48:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:36,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 05:48:36,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:36,229 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 33 proven. 44 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-14 05:48:36,229 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:36,356 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 33 proven. 44 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-14 05:48:36,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [25762385] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:36,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19100714] [2024-11-14 05:48:36,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:36,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:48:36,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:48:36,360 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:48:36,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-14 05:48:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:36,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 05:48:36,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:36,573 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 33 proven. 44 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-14 05:48:36,573 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:36,654 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 33 proven. 44 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-14 05:48:36,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19100714] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:36,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:48:36,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 5, 5, 5, 5] total 21 [2024-11-14 05:48:36,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482485477] [2024-11-14 05:48:36,655 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:48:36,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-14 05:48:36,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:48:36,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-14 05:48:36,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2024-11-14 05:48:36,657 INFO L87 Difference]: Start difference. First operand 16573 states and 24244 transitions. Second operand has 21 states, 21 states have (on average 7.095238095238095) internal successors, (149), 21 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:40,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:48:40,280 INFO L93 Difference]: Finished difference Result 12431 states and 17778 transitions. [2024-11-14 05:48:40,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-11-14 05:48:40,281 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.095238095238095) internal successors, (149), 21 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-14 05:48:40,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:48:40,309 INFO L225 Difference]: With dead ends: 12431 [2024-11-14 05:48:40,309 INFO L226 Difference]: Without dead ends: 12431 [2024-11-14 05:48:40,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2915 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1412, Invalid=7330, Unknown=0, NotChecked=0, Total=8742 [2024-11-14 05:48:40,312 INFO L432 NwaCegarLoop]: 249 mSDtfsCounter, 3568 mSDsluCounter, 2183 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3568 SdHoareTripleChecker+Valid, 2432 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:48:40,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3568 Valid, 2432 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-14 05:48:40,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12431 states. [2024-11-14 05:48:40,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12431 to 12240. [2024-11-14 05:48:40,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12240 states, 12228 states have (on average 1.4505233889434086) internal successors, (17737), 12239 states have internal predecessors, (17737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:40,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12240 states to 12240 states and 17737 transitions. [2024-11-14 05:48:40,504 INFO L78 Accepts]: Start accepts. Automaton has 12240 states and 17737 transitions. Word has length 61 [2024-11-14 05:48:40,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:48:40,505 INFO L471 AbstractCegarLoop]: Abstraction has 12240 states and 17737 transitions. [2024-11-14 05:48:40,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.095238095238095) internal successors, (149), 21 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:40,506 INFO L276 IsEmpty]: Start isEmpty. Operand 12240 states and 17737 transitions. [2024-11-14 05:48:40,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-14 05:48:40,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:48:40,507 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:48:40,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (37)] Ended with exit code 0 [2024-11-14 05:48:40,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-11-14 05:48:40,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 (36)] Ended with exit code 0 [2024-11-14 05:48:41,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:41,108 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:48:41,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:48:41,109 INFO L85 PathProgramCache]: Analyzing trace with hash -766989770, now seen corresponding path program 1 times [2024-11-14 05:48:41,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:48:41,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [993925852] [2024-11-14 05:48:41,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:41,110 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 05:48:41,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:48:41,112 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:41,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 (39)] Waiting until timeout for monitored process [2024-11-14 05:48:41,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:41,254 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:48:41,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:41,374 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 58 proven. 66 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 05:48:41,374 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:41,442 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 58 proven. 66 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 05:48:41,442 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:48:41,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [993925852] [2024-11-14 05:48:41,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [993925852] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:41,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2058554626] [2024-11-14 05:48:41,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:41,444 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:48:41,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:48:41,446 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:48:41,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2024-11-14 05:48:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:41,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:48:41,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:41,713 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 58 proven. 66 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 05:48:41,713 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:41,785 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 58 proven. 66 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 05:48:41,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2058554626] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:41,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526868381] [2024-11-14 05:48:41,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:41,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:48:41,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:48:41,787 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:48:41,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-14 05:48:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:41,929 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 05:48:41,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:42,058 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 58 proven. 66 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 05:48:42,059 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:42,128 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-14 05:48:42,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526868381] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:42,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:48:42,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 10, 7] total 13 [2024-11-14 05:48:42,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99388865] [2024-11-14 05:48:42,129 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:48:42,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 05:48:42,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:48:42,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 05:48:42,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-14 05:48:42,130 INFO L87 Difference]: Start difference. First operand 12240 states and 17737 transitions. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:42,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:48:42,495 INFO L93 Difference]: Finished difference Result 12460 states and 17919 transitions. [2024-11-14 05:48:42,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-14 05:48:42,496 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-14 05:48:42,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:48:42,528 INFO L225 Difference]: With dead ends: 12460 [2024-11-14 05:48:42,528 INFO L226 Difference]: Without dead ends: 12418 [2024-11-14 05:48:42,528 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2024-11-14 05:48:42,529 INFO L432 NwaCegarLoop]: 235 mSDtfsCounter, 216 mSDsluCounter, 1617 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:48:42,529 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 1852 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:48:42,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12418 states. [2024-11-14 05:48:42,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12418 to 9789. [2024-11-14 05:48:42,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9789 states, 9777 states have (on average 1.457502301319423) internal successors, (14250), 9788 states have internal predecessors, (14250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:42,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9789 states to 9789 states and 14250 transitions. [2024-11-14 05:48:42,679 INFO L78 Accepts]: Start accepts. Automaton has 9789 states and 14250 transitions. Word has length 65 [2024-11-14 05:48:42,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:48:42,679 INFO L471 AbstractCegarLoop]: Abstraction has 9789 states and 14250 transitions. [2024-11-14 05:48:42,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:42,680 INFO L276 IsEmpty]: Start isEmpty. Operand 9789 states and 14250 transitions. [2024-11-14 05:48:42,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-14 05:48:42,681 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:48:42,681 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 5, 5, 4, 3, 3, 2, 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 05:48:42,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (40)] Forceful destruction successful, exit code 0 [2024-11-14 05:48:42,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 (39)] Ended with exit code 0 [2024-11-14 05:48:43,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-11-14 05:48:43,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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=3,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:48:43,284 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:48:43,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:48:43,285 INFO L85 PathProgramCache]: Analyzing trace with hash -870420206, now seen corresponding path program 1 times [2024-11-14 05:48:43,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:48:43,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173976936] [2024-11-14 05:48:43,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:43,285 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 05:48:43,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:48:43,287 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:43,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 (42)] Waiting until timeout for monitored process [2024-11-14 05:48:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:43,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 05:48:43,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:43,449 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 05:48:43,812 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-14 05:48:43,812 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:44,364 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-14 05:48:44,365 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:48:44,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173976936] [2024-11-14 05:48:44,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1173976936] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:44,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1831879144] [2024-11-14 05:48:44,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:44,365 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:48:44,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:48:44,367 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:48:44,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (43)] Waiting until timeout for monitored process [2024-11-14 05:48:44,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:44,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 05:48:44,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:44,640 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 05:48:44,955 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-14 05:48:44,955 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:45,459 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-14 05:48:45,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1831879144] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:45,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249207833] [2024-11-14 05:48:45,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:45,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:48:45,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:48:45,461 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:48:45,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-14 05:48:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:45,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 05:48:45,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:45,630 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 05:48:45,924 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-14 05:48:45,924 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:46,360 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-14 05:48:46,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249207833] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:46,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:48:46,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 7 [2024-11-14 05:48:46,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353797555] [2024-11-14 05:48:46,360 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:48:46,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 05:48:46,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:48:46,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 05:48:46,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-14 05:48:46,361 INFO L87 Difference]: Start difference. First operand 9789 states and 14250 transitions. Second operand has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:47,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:48:47,247 INFO L93 Difference]: Finished difference Result 24141 states and 34814 transitions. [2024-11-14 05:48:47,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 05:48:47,248 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-14 05:48:47,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:48:47,295 INFO L225 Difference]: With dead ends: 24141 [2024-11-14 05:48:47,295 INFO L226 Difference]: Without dead ends: 24141 [2024-11-14 05:48:47,295 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2024-11-14 05:48:47,299 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 419 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:48:47,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 400 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 05:48:47,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24141 states. [2024-11-14 05:48:47,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24141 to 20843. [2024-11-14 05:48:47,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20843 states, 20831 states have (on average 1.4627238250684076) internal successors, (30470), 20842 states have internal predecessors, (30470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:47,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20843 states to 20843 states and 30470 transitions. [2024-11-14 05:48:47,661 INFO L78 Accepts]: Start accepts. Automaton has 20843 states and 30470 transitions. Word has length 69 [2024-11-14 05:48:47,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:48:47,662 INFO L471 AbstractCegarLoop]: Abstraction has 20843 states and 30470 transitions. [2024-11-14 05:48:47,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:47,662 INFO L276 IsEmpty]: Start isEmpty. Operand 20843 states and 30470 transitions. [2024-11-14 05:48:47,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-14 05:48:47,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:48:47,663 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 5, 5, 4, 3, 3, 2, 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 05:48:47,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 (42)] Ended with exit code 0 [2024-11-14 05:48:47,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-11-14 05:48:48,067 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (43)] Ended with exit code 0 [2024-11-14 05:48:48,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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=3,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 05:48:48,265 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:48:48,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:48:48,266 INFO L85 PathProgramCache]: Analyzing trace with hash -870420207, now seen corresponding path program 1 times [2024-11-14 05:48:48,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:48:48,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281788658] [2024-11-14 05:48:48,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:48,266 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 05:48:48,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:48:48,268 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:48,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 (45)] Waiting until timeout for monitored process [2024-11-14 05:48:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:48,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 05:48:48,405 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:48,408 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 05:48:48,532 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-14 05:48:48,532 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:48,677 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-14 05:48:48,678 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:48:48,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281788658] [2024-11-14 05:48:48,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281788658] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:48,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [232599720] [2024-11-14 05:48:48,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:48,678 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:48:48,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:48:48,682 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:48:48,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (46)] Waiting until timeout for monitored process [2024-11-14 05:48:48,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:49,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:48:49,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:49,039 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-14 05:48:49,039 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 05:48:49,430 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-14 05:48:49,431 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:49,608 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-14 05:48:49,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [232599720] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:49,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691897615] [2024-11-14 05:48:49,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:49,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:48:49,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:48:49,610 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:48:49,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-14 05:48:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:49,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 05:48:49,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:49,912 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-14 05:48:49,912 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:50,017 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-14 05:48:50,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691897615] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:50,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:48:50,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 8 [2024-11-14 05:48:50,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524604271] [2024-11-14 05:48:50,018 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:48:50,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 05:48:50,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:48:50,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 05:48:50,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-14 05:48:50,019 INFO L87 Difference]: Start difference. First operand 20843 states and 30470 transitions. Second operand has 9 states, 8 states have (on average 10.75) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:50,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:48:50,576 INFO L93 Difference]: Finished difference Result 25240 states and 36256 transitions. [2024-11-14 05:48:50,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 05:48:50,577 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-14 05:48:50,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:48:50,617 INFO L225 Difference]: With dead ends: 25240 [2024-11-14 05:48:50,617 INFO L226 Difference]: Without dead ends: 25240 [2024-11-14 05:48:50,617 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-14 05:48:50,618 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 351 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:48:50,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 390 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 05:48:50,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25240 states. [2024-11-14 05:48:50,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25240 to 23614. [2024-11-14 05:48:50,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23614 states, 23603 states have (on average 1.4449858068889547) internal successors, (34106), 23613 states have internal predecessors, (34106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:50,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23614 states to 23614 states and 34106 transitions. [2024-11-14 05:48:50,976 INFO L78 Accepts]: Start accepts. Automaton has 23614 states and 34106 transitions. Word has length 69 [2024-11-14 05:48:50,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:48:50,977 INFO L471 AbstractCegarLoop]: Abstraction has 23614 states and 34106 transitions. [2024-11-14 05:48:50,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:50,977 INFO L276 IsEmpty]: Start isEmpty. Operand 23614 states and 34106 transitions. [2024-11-14 05:48:50,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-14 05:48:50,982 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:48:50,982 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 5, 5, 5, 4, 4, 3, 3, 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 05:48:50,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (46)] Forceful destruction successful, exit code 0 [2024-11-14 05:48:51,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-11-14 05:48:51,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 (45)] Ended with exit code 0 [2024-11-14 05:48:51,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:51,583 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:48:51,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:48:51,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1099198752, now seen corresponding path program 1 times [2024-11-14 05:48:51,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:48:51,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301633067] [2024-11-14 05:48:51,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:51,584 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 05:48:51,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:48:51,588 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:51,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 (48)] Waiting until timeout for monitored process [2024-11-14 05:48:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:51,736 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:48:51,737 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:51,891 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 77 proven. 57 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-14 05:48:51,891 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:51,989 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 77 proven. 57 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-14 05:48:51,989 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:48:51,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301633067] [2024-11-14 05:48:51,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301633067] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:51,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1022746290] [2024-11-14 05:48:51,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:51,990 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:48:51,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:48:51,992 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:48:52,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (49)] Waiting until timeout for monitored process [2024-11-14 05:48:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:52,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 05:48:52,279 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:52,430 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 77 proven. 101 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-14 05:48:52,430 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:52,530 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 77 proven. 57 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-14 05:48:52,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1022746290] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:52,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914195871] [2024-11-14 05:48:52,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:52,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:48:52,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:48:52,532 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:48:52,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-14 05:48:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:52,689 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 05:48:52,690 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:52,827 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 46 proven. 94 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-14 05:48:52,827 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:52,981 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 46 proven. 94 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-14 05:48:52,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914195871] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:52,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:48:52,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8, 6, 6, 6] total 14 [2024-11-14 05:48:52,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344190983] [2024-11-14 05:48:52,982 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:48:52,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-14 05:48:52,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:48:52,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-14 05:48:52,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-14 05:48:52,984 INFO L87 Difference]: Start difference. First operand 23614 states and 34106 transitions. Second operand has 15 states, 15 states have (on average 8.333333333333334) internal successors, (125), 14 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:53,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:48:53,394 INFO L93 Difference]: Finished difference Result 46560 states and 66023 transitions. [2024-11-14 05:48:53,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-14 05:48:53,395 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.333333333333334) internal successors, (125), 14 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-11-14 05:48:53,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:48:53,490 INFO L225 Difference]: With dead ends: 46560 [2024-11-14 05:48:53,491 INFO L226 Difference]: Without dead ends: 46560 [2024-11-14 05:48:53,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=178, Invalid=524, Unknown=0, NotChecked=0, Total=702 [2024-11-14 05:48:53,493 INFO L432 NwaCegarLoop]: 209 mSDtfsCounter, 846 mSDsluCounter, 1487 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:48:53,493 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 1696 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:48:53,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46560 states. [2024-11-14 05:48:54,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46560 to 44778. [2024-11-14 05:48:54,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44778 states, 44767 states have (on average 1.4228337838139702) internal successors, (63696), 44777 states have internal predecessors, (63696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:54,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44778 states to 44778 states and 63696 transitions. [2024-11-14 05:48:54,237 INFO L78 Accepts]: Start accepts. Automaton has 44778 states and 63696 transitions. Word has length 85 [2024-11-14 05:48:54,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:48:54,237 INFO L471 AbstractCegarLoop]: Abstraction has 44778 states and 63696 transitions. [2024-11-14 05:48:54,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.333333333333334) internal successors, (125), 14 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:54,237 INFO L276 IsEmpty]: Start isEmpty. Operand 44778 states and 63696 transitions. [2024-11-14 05:48:54,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-14 05:48:54,239 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:48:54,239 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 9, 6, 6, 5, 4, 4, 4, 3, 3, 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 05:48:54,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-11-14 05:48:54,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 (48)] Ended with exit code 0 [2024-11-14 05:48:54,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (49)] Ended with exit code 0 [2024-11-14 05:48:54,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 05:48:54,840 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-14 05:48:54,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:48:54,841 INFO L85 PathProgramCache]: Analyzing trace with hash 679830007, now seen corresponding path program 1 times [2024-11-14 05:48:54,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:48:54,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1130558539] [2024-11-14 05:48:54,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:54,841 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 05:48:54,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:48:54,843 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:54,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 (51)] Waiting until timeout for monitored process [2024-11-14 05:48:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 05:48:55,046 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 05:48:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 05:48:55,220 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2024-11-14 05:48:55,220 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-14 05:48:55,222 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK (19 of 20 remaining) [2024-11-14 05:48:55,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 20 remaining) [2024-11-14 05:48:55,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 20 remaining) [2024-11-14 05:48:55,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 20 remaining) [2024-11-14 05:48:55,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 20 remaining) [2024-11-14 05:48:55,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 20 remaining) [2024-11-14 05:48:55,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 20 remaining) [2024-11-14 05:48:55,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 20 remaining) [2024-11-14 05:48:55,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 20 remaining) [2024-11-14 05:48:55,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 20 remaining) [2024-11-14 05:48:55,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 20 remaining) [2024-11-14 05:48:55,226 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 20 remaining) [2024-11-14 05:48:55,226 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 20 remaining) [2024-11-14 05:48:55,226 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 20 remaining) [2024-11-14 05:48:55,226 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 20 remaining) [2024-11-14 05:48:55,226 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 20 remaining) [2024-11-14 05:48:55,226 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 20 remaining) [2024-11-14 05:48:55,226 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE (2 of 20 remaining) [2024-11-14 05:48:55,227 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE (1 of 20 remaining) [2024-11-14 05:48:55,227 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE (0 of 20 remaining) [2024-11-14 05:48:55,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 (51)] Forceful destruction successful, exit code 0 [2024-11-14 05:48:55,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/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 05:48:55,434 INFO L407 BasicCegarLoop]: Path program histogram: [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 05:48:55,507 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 05:48:55,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 05:48:55 BoogieIcfgContainer [2024-11-14 05:48:55,510 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 05:48:55,511 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 05:48:55,511 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 05:48:55,511 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 05:48:55,512 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:48:12" (3/4) ... [2024-11-14 05:48:55,515 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-14 05:48:55,516 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 05:48:55,517 INFO L158 Benchmark]: Toolchain (without parser) took 44342.11ms. Allocated memory was 117.4MB in the beginning and 620.8MB in the end (delta: 503.3MB). Free memory was 91.6MB in the beginning and 162.2MB in the end (delta: -70.6MB). Peak memory consumption was 433.1MB. Max. memory is 16.1GB. [2024-11-14 05:48:55,517 INFO L158 Benchmark]: CDTParser took 4.49ms. Allocated memory is still 117.4MB. Free memory is still 84.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:48:55,517 INFO L158 Benchmark]: CACSL2BoogieTranslator took 489.65ms. Allocated memory is still 117.4MB. Free memory was 91.4MB in the beginning and 72.6MB in the end (delta: 18.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 05:48:55,517 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.60ms. Allocated memory is still 117.4MB. Free memory was 72.6MB in the beginning and 70.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:48:55,517 INFO L158 Benchmark]: Boogie Preprocessor took 47.20ms. Allocated memory is still 117.4MB. Free memory was 70.9MB in the beginning and 69.3MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 05:48:55,518 INFO L158 Benchmark]: RCFGBuilder took 707.62ms. Allocated memory is still 117.4MB. Free memory was 69.3MB in the beginning and 48.5MB in the end (delta: 20.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 05:48:55,518 INFO L158 Benchmark]: TraceAbstraction took 43013.25ms. Allocated memory was 117.4MB in the beginning and 620.8MB in the end (delta: 503.3MB). Free memory was 47.9MB in the beginning and 162.3MB in the end (delta: -114.4MB). Peak memory consumption was 391.1MB. Max. memory is 16.1GB. [2024-11-14 05:48:55,518 INFO L158 Benchmark]: Witness Printer took 4.80ms. Allocated memory is still 620.8MB. Free memory was 162.3MB in the beginning and 162.2MB in the end (delta: 100.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:48:55,520 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 4.49ms. Allocated memory is still 117.4MB. Free memory is still 84.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 489.65ms. Allocated memory is still 117.4MB. Free memory was 91.4MB in the beginning and 72.6MB in the end (delta: 18.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.60ms. Allocated memory is still 117.4MB. Free memory was 72.6MB in the beginning and 70.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 47.20ms. Allocated memory is still 117.4MB. Free memory was 70.9MB in the beginning and 69.3MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 707.62ms. Allocated memory is still 117.4MB. Free memory was 69.3MB in the beginning and 48.5MB in the end (delta: 20.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 43013.25ms. Allocated memory was 117.4MB in the beginning and 620.8MB in the end (delta: 503.3MB). Free memory was 47.9MB in the beginning and 162.3MB in the end (delta: -114.4MB). Peak memory consumption was 391.1MB. Max. memory is 16.1GB. * Witness Printer took 4.80ms. Allocated memory is still 620.8MB. Free memory was 162.3MB in the beginning and 162.2MB in the end (delta: 100.5kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 592]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 592. Possible FailurePath: [L528] struct cell *S; [L529] int pc1 = 1; [L530] int pc4 = 1; [L531] static struct cell *t1 = ((void *)0); [L532] static struct cell *x1 = ((void *)0); [L561] struct cell* garbage; [L562] static struct cell *t4 = ((void *)0); [L563] static struct cell *x4 = ((void *)0); [L566] static int res4; VAL [S={0:0}, garbage={0:0}, pc1=1, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L594] S || 1 != pc1 || __VERIFIER_nondet_int() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={0:0}, garbage={0:0}, pc1=1, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L537] x1 = malloc(sizeof(*x1)) VAL [S={0:0}, garbage={0:0}, pc1=2, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L538] x1->data = 0 VAL [S={0:0}, garbage={0:0}, pc1=2, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L539] x1->next = ((void *)0) VAL [S={0:0}, garbage={0:0}, pc1=2, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={0:0}, garbage={0:0}, pc1=2, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L541] case 2: VAL [S={0:0}, garbage={0:0}, pc1=3, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L542] x1->data = 4 VAL [S={0:0}, garbage={0:0}, pc1=3, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={0:0}, garbage={0:0}, pc1=3, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L541] case 2: [L544] case 3: [L545] t1 = S VAL [S={0:0}, garbage={0:0}, pc1=4, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={0:0}, garbage={0:0}, pc1=4, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L541] case 2: [L544] case 3: [L547] case 4: VAL [S={0:0}, garbage={0:0}, pc1=5, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L548] x1->next = t1 VAL [S={0:0}, garbage={0:0}, pc1=5, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={0:0}, garbage={0:0}, pc1=5, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L541] case 2: [L544] case 3: [L547] case 4: [L550] case 5: [L552] S = x1 VAL [S={6:0}, garbage={0:0}, pc1=6, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={6:0}, garbage={0:0}, pc1=6, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L541] case 2: [L544] case 3: [L547] case 4: [L550] case 5: [L556] case 6: [L557] pc1 = 1 VAL [S={6:0}, garbage={0:0}, pc1=1, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={6:0}, garbage={0:0}, pc1=1, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND FALSE !(__VERIFIER_nondet_int()) [L598] CALL pop() [L567] pc4++ [L568] case 1: [L569] t4 = S VAL [S={6:0}, garbage={0:0}, pc1=1, pc4=2, res4=0, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L598] RET pop() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={6:0}, garbage={0:0}, pc1=1, pc4=2, res4=0, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND FALSE !(__VERIFIER_nondet_int()) [L598] CALL pop() [L567] pc4++ [L568] case 1: [L571] case 2: VAL [S={6:0}, garbage={0:0}, pc1=1, pc4=3, res4=0, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L598] RET pop() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={6:0}, garbage={0:0}, pc1=1, pc4=3, res4=0, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND FALSE !(__VERIFIER_nondet_int()) [L598] CALL pop() [L567] pc4++ [L568] case 1: [L571] case 2: [L575] case 3: VAL [S={6:0}, garbage={0:0}, pc1=1, pc4=4, res4=0, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L576] EXPR t4->next VAL [S={6:0}, garbage={0:0}, pc1=1, pc4=4, res4=0, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L576] x4 = t4->next VAL [S={6:0}, garbage={0:0}, pc1=1, pc4=4, res4=0, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L598] RET pop() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={6:0}, garbage={0:0}, pc1=1, pc4=4, res4=0, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND FALSE !(__VERIFIER_nondet_int()) [L598] CALL pop() [L567] pc4++ [L568] case 1: [L571] case 2: [L575] case 3: [L578] case 4: [L580] S = x4 VAL [S={0:0}, garbage={0:0}, pc1=1, pc4=5, res4=0, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L598] RET pop() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={0:0}, garbage={0:0}, pc1=1, pc4=5, res4=0, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L594] COND FALSE !(S || 1 != pc1 || __VERIFIER_nondet_int()) [L600] COND FALSE !(\read(*garbage)) VAL [S={0:0}, garbage={0:0}, pc1=1, pc4=5, res4=0, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L605] S = ((void *)0) [L606] t1 = ((void *)0) [L607] x1 = ((void *)0) [L608] t4 = ((void *)0) [L609] x4 = ((void *)0) [L610] return !!garbage; VAL [S={0:0}, \result=0, garbage={0:0}, pc1=1, pc4=5, res4=0, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 64 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 42.9s, OverallIterations: 23, TraceHistogramMax: 11, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 11.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11409 SdHoareTripleChecker+Valid, 5.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11409 mSDsluCounter, 15964 SdHoareTripleChecker+Invalid, 4.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13173 mSDsCounter, 427 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3297 IncrementalHoareTripleChecker+Invalid, 3724 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 427 mSolverCounterUnsat, 2791 mSDtfsCounter, 3297 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4068 GetRequests, 3695 SyntacticMatches, 0 SemanticMatches, 373 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5012 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44778occurred in iteration=22, InterpolantAutomatonStates: 330, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.1s AutomataMinimizationTime, 22 MinimizatonAttempts, 12893 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 11.2s InterpolantComputationTime, 2067 NumberOfCodeBlocks, 2067 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 3771 ConstructedInterpolants, 0 QuantifiedInterpolants, 16813 SizeOfPredicates, 160 NumberOfNonLiveVariables, 6644 ConjunctsInSsa, 358 ConjunctsInUnsatCore, 89 InterpolantComputations, 10 PerfectInterpolantSequences, 4141/6657 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-14 05:48:55,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e1f814-1550-4967-875a-623f48c46852/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample