./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration_-read.c --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_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration_-read.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9aaf3ef5b6218ff6658a67703b1e3ffb0d16a40e5e7c9a13354b853d6f63747b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:27:27,024 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:27:27,112 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 13:27:27,118 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:27:27,119 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:27:27,169 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:27:27,172 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:27:27,172 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:27:27,172 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:27:27,172 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:27:27,172 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:27:27,173 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:27:27,173 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:27:27,173 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:27:27,173 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:27:27,173 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:27:27,173 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:27:27,174 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:27:27,174 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:27:27,174 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:27:27,174 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 13:27:27,174 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 13:27:27,174 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 13:27:27,174 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:27:27,174 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 13:27:27,174 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:27:27,175 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 13:27:27,175 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:27:27,175 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:27:27,175 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:27:27,175 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:27:27,175 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:27:27,175 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:27:27,175 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:27:27,179 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:27:27,179 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:27:27,179 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:27:27,179 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:27:27,179 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:27:27,179 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:27:27,180 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:27:27,180 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:27:27,180 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9aaf3ef5b6218ff6658a67703b1e3ffb0d16a40e5e7c9a13354b853d6f63747b [2024-11-13 13:27:27,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:27:27,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:27:27,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:27:27,632 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:27:27,632 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:27:27,634 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration_-read.c Unable to find full path for "g++" [2024-11-13 13:27:29,659 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:27:30,026 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:27:30,027 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration_-read.c [2024-11-13 13:27:30,034 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/data/82e5caeb5/449232e5c7c94b6b930ea5e855e7142b/FLAGa6d7f9ccd [2024-11-13 13:27:30,056 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/data/82e5caeb5/449232e5c7c94b6b930ea5e855e7142b [2024-11-13 13:27:30,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:27:30,061 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:27:30,062 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:27:30,062 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:27:30,067 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:27:30,068 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:27:30" (1/1) ... [2024-11-13 13:27:30,069 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55211b34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:30, skipping insertion in model container [2024-11-13 13:27:30,071 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:27:30" (1/1) ... [2024-11-13 13:27:30,085 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:27:30,268 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:27:30,283 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:27:30,303 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:27:30,320 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:27:30,320 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:30 WrapperNode [2024-11-13 13:27:30,321 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:27:30,322 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:27:30,322 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:27:30,322 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:27:30,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:30" (1/1) ... [2024-11-13 13:27:30,338 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:30" (1/1) ... [2024-11-13 13:27:30,356 INFO L138 Inliner]: procedures = 8, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 63 [2024-11-13 13:27:30,357 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:27:30,358 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:27:30,358 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:27:30,358 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:27:30,368 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:30" (1/1) ... [2024-11-13 13:27:30,368 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:30" (1/1) ... [2024-11-13 13:27:30,369 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:30" (1/1) ... [2024-11-13 13:27:30,388 INFO L175 MemorySlicer]: Split 3 memory accesses to 2 slices as follows [1, 2]. 67 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 1 writes are split as follows [0, 1]. [2024-11-13 13:27:30,390 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:30" (1/1) ... [2024-11-13 13:27:30,391 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:30" (1/1) ... [2024-11-13 13:27:30,398 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:30" (1/1) ... [2024-11-13 13:27:30,406 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:30" (1/1) ... [2024-11-13 13:27:30,406 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:30" (1/1) ... [2024-11-13 13:27:30,407 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:30" (1/1) ... [2024-11-13 13:27:30,411 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:27:30,412 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:27:30,412 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:27:30,412 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:27:30,416 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:30" (1/1) ... [2024-11-13 13:27:30,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:27:30,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:27:30,455 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:27:30,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:27:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 13:27:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 13:27:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:27:30,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:27:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 13:27:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 13:27:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 13:27:30,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 13:27:30,555 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:27:30,557 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:27:30,724 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2024-11-13 13:27:30,725 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:27:30,741 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:27:30,741 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-13 13:27:30,742 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:27:30 BoogieIcfgContainer [2024-11-13 13:27:30,742 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:27:30,746 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:27:30,746 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:27:30,751 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:27:30,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:27:30" (1/3) ... [2024-11-13 13:27:30,753 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177a9736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:27:30, skipping insertion in model container [2024-11-13 13:27:30,753 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:30" (2/3) ... [2024-11-13 13:27:30,754 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177a9736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:27:30, skipping insertion in model container [2024-11-13 13:27:30,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:27:30" (3/3) ... [2024-11-13 13:27:30,756 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysWithLenghtAtDeclaration_-read.c [2024-11-13 13:27:30,773 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:27:30,776 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG ArraysWithLenghtAtDeclaration_-read.c that has 1 procedures, 28 locations, 1 initial locations, 3 loop locations, and 8 error locations. [2024-11-13 13:27:30,829 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:27:30,846 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=PETRI_NET, 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;@4c58d3c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:27:30,846 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-13 13:27:30,850 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 27 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) [2024-11-13 13:27:30,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-13 13:27:30,857 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:27:30,858 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-13 13:27:30,859 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:27:30,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:27:30,864 INFO L85 PathProgramCache]: Analyzing trace with hash 28698920, now seen corresponding path program 1 times [2024-11-13 13:27:30,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:27:30,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294026573] [2024-11-13 13:27:30,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:30,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:27:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:31,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:27:31,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:27:31,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294026573] [2024-11-13 13:27:31,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294026573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:27:31,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:27:31,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:27:31,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958866782] [2024-11-13 13:27:31,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:27:31,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:27:31,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:27:31,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:27:31,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:27:31,236 INFO L87 Difference]: Start difference. First operand has 28 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 27 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) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2024-11-13 13:27:31,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:27:31,309 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2024-11-13 13:27:31,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:27:31,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2024-11-13 13:27:31,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:27:31,325 INFO L225 Difference]: With dead ends: 34 [2024-11-13 13:27:31,325 INFO L226 Difference]: Without dead ends: 32 [2024-11-13 13:27:31,327 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 [2024-11-13 13:27:31,331 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:27:31,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 45 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:27:31,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-13 13:27:31,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2024-11-13 13:27:31,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.6) internal successors, (32), 27 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) [2024-11-13 13:27:31,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-11-13 13:27:31,374 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 5 [2024-11-13 13:27:31,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:27:31,375 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-11-13 13:27:31,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2024-11-13 13:27:31,376 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-11-13 13:27:31,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-13 13:27:31,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:27:31,379 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 13:27:31,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:27:31,379 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:27:31,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:27:31,380 INFO L85 PathProgramCache]: Analyzing trace with hash 889627043, now seen corresponding path program 1 times [2024-11-13 13:27:31,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:27:31,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514468595] [2024-11-13 13:27:31,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:31,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:27:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:31,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:27:31,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:27:31,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514468595] [2024-11-13 13:27:31,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514468595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:27:31,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:27:31,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:27:31,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441159635] [2024-11-13 13:27:31,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:27:31,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:27:31,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:27:31,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:27:31,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:27:31,510 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 3 states, 3 states have (on average 2.0) 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) [2024-11-13 13:27:31,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:27:31,565 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2024-11-13 13:27:31,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:27:31,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) 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 [2024-11-13 13:27:31,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:27:31,567 INFO L225 Difference]: With dead ends: 47 [2024-11-13 13:27:31,567 INFO L226 Difference]: Without dead ends: 47 [2024-11-13 13:27:31,568 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:27:31,569 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:27:31,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 36 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:27:31,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-13 13:27:31,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 30. [2024-11-13 13:27:31,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 29 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) [2024-11-13 13:27:31,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2024-11-13 13:27:31,575 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 6 [2024-11-13 13:27:31,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:27:31,575 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2024-11-13 13:27:31,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) 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) [2024-11-13 13:27:31,575 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2024-11-13 13:27:31,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-13 13:27:31,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:27:31,576 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 13:27:31,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:27:31,577 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:27:31,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:27:31,577 INFO L85 PathProgramCache]: Analyzing trace with hash 889666573, now seen corresponding path program 1 times [2024-11-13 13:27:31,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:27:31,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757323487] [2024-11-13 13:27:31,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:31,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:27:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:31,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:27:31,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:27:31,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757323487] [2024-11-13 13:27:31,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757323487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:27:31,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:27:31,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:27:31,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248249040] [2024-11-13 13:27:31,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:27:31,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:27:31,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:27:31,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:27:31,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:27:31,810 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2024-11-13 13:27:31,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:27:31,898 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2024-11-13 13:27:31,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:27:31,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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 [2024-11-13 13:27:31,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:27:31,901 INFO L225 Difference]: With dead ends: 29 [2024-11-13 13:27:31,901 INFO L226 Difference]: Without dead ends: 29 [2024-11-13 13:27:31,901 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:27:31,902 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 28 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:27:31,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 28 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:27:31,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-13 13:27:31,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-13 13:27:31,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 22 states have (on average 1.5) internal successors, (33), 28 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) [2024-11-13 13:27:31,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2024-11-13 13:27:31,913 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 6 [2024-11-13 13:27:31,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:27:31,913 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2024-11-13 13:27:31,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2024-11-13 13:27:31,914 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2024-11-13 13:27:31,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-13 13:27:31,914 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:27:31,914 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 13:27:31,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:27:31,915 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:27:31,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:27:31,915 INFO L85 PathProgramCache]: Analyzing trace with hash 889666574, now seen corresponding path program 1 times [2024-11-13 13:27:31,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:27:31,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381015768] [2024-11-13 13:27:31,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:31,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:27:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:32,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:27:32,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:27:32,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381015768] [2024-11-13 13:27:32,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381015768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:27:32,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:27:32,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:27:32,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242207147] [2024-11-13 13:27:32,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:27:32,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:27:32,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:27:32,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:27:32,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:27:32,095 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2024-11-13 13:27:32,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:27:32,203 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2024-11-13 13:27:32,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:27:32,204 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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 [2024-11-13 13:27:32,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:27:32,205 INFO L225 Difference]: With dead ends: 32 [2024-11-13 13:27:32,205 INFO L226 Difference]: Without dead ends: 32 [2024-11-13 13:27:32,205 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:27:32,208 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 31 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 27 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 [2024-11-13 13:27:32,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 27 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:27:32,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-13 13:27:32,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-11-13 13:27:32,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 29 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) [2024-11-13 13:27:32,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2024-11-13 13:27:32,219 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 6 [2024-11-13 13:27:32,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:27:32,219 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2024-11-13 13:27:32,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2024-11-13 13:27:32,222 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2024-11-13 13:27:32,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 13:27:32,223 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:27:32,223 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:27:32,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 13:27:32,223 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:27:32,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:27:32,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1809808373, now seen corresponding path program 1 times [2024-11-13 13:27:32,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:27:32,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291688965] [2024-11-13 13:27:32,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:32,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:27:32,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:32,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:27:32,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:27:32,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291688965] [2024-11-13 13:27:32,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291688965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:27:32,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:27:32,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:27:32,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748811245] [2024-11-13 13:27:32,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:27:32,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:27:32,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:27:32,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:27:32,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:27:32,361 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 4 states, 4 states have (on average 1.75) 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) [2024-11-13 13:27:32,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:27:32,462 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2024-11-13 13:27:32,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:27:32,463 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) 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 [2024-11-13 13:27:32,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:27:32,464 INFO L225 Difference]: With dead ends: 48 [2024-11-13 13:27:32,464 INFO L226 Difference]: Without dead ends: 48 [2024-11-13 13:27:32,465 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:27:32,466 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 22 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:27:32,466 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 40 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:27:32,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-13 13:27:32,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 31. [2024-11-13 13:27:32,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 30 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:32,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2024-11-13 13:27:32,471 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 7 [2024-11-13 13:27:32,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:27:32,472 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2024-11-13 13:27:32,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) 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) [2024-11-13 13:27:32,472 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2024-11-13 13:27:32,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 13:27:32,472 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:27:32,473 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:27:32,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 13:27:32,473 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:27:32,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:27:32,474 INFO L85 PathProgramCache]: Analyzing trace with hash -186313523, now seen corresponding path program 1 times [2024-11-13 13:27:32,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:27:32,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829278478] [2024-11-13 13:27:32,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:32,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:27:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:32,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:27:32,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:27:32,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829278478] [2024-11-13 13:27:32,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829278478] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:27:32,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489003973] [2024-11-13 13:27:32,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:32,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:27:32,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:27:32,612 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:27:32,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:27:32,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:32,694 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 13:27:32,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:27:32,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:27:32,760 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:27:32,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:27:32,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489003973] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:27:32,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:27:32,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-13 13:27:32,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635624630] [2024-11-13 13:27:32,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:27:32,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:27:32,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:27:32,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:27:32,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:27:32,838 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:32,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:27:32,957 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2024-11-13 13:27:32,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:27:32,958 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-13 13:27:32,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:27:32,962 INFO L225 Difference]: With dead ends: 46 [2024-11-13 13:27:32,963 INFO L226 Difference]: Without dead ends: 46 [2024-11-13 13:27:32,963 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:27:32,964 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 14 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:27:32,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 93 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:27:32,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-13 13:27:32,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2024-11-13 13:27:32,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 35 states have (on average 1.457142857142857) internal successors, (51), 41 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:32,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2024-11-13 13:27:32,975 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 9 [2024-11-13 13:27:32,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:27:32,975 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2024-11-13 13:27:32,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:32,976 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2024-11-13 13:27:32,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 13:27:32,976 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:27:32,976 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-13 13:27:32,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:27:33,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 13:27:33,177 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:27:33,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:27:33,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1480751863, now seen corresponding path program 1 times [2024-11-13 13:27:33,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:27:33,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549667592] [2024-11-13 13:27:33,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:33,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:27:33,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:33,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:27:33,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:27:33,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549667592] [2024-11-13 13:27:33,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549667592] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:27:33,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799726250] [2024-11-13 13:27:33,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:33,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:27:33,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:27:33,463 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:27:33,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:27:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:33,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 13:27:33,538 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:27:33,589 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 [2024-11-13 13:27:33,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:27:33,690 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:27:33,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:27:33,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799726250] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:27:33,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:27:33,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-13 13:27:33,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848917679] [2024-11-13 13:27:33,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:27:33,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 13:27:33,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:27:33,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 13:27:33,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:27:33,823 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 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) [2024-11-13 13:27:34,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:27:34,027 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2024-11-13 13:27:34,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:27:34,028 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 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 10 [2024-11-13 13:27:34,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:27:34,029 INFO L225 Difference]: With dead ends: 47 [2024-11-13 13:27:34,029 INFO L226 Difference]: Without dead ends: 47 [2024-11-13 13:27:34,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-13 13:27:34,030 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 57 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:27:34,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 40 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:27:34,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-13 13:27:34,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2024-11-13 13:27:34,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 36 states have (on average 1.3888888888888888) internal successors, (50), 42 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:34,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2024-11-13 13:27:34,035 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 10 [2024-11-13 13:27:34,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:27:34,035 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2024-11-13 13:27:34,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 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) [2024-11-13 13:27:34,036 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2024-11-13 13:27:34,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 13:27:34,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:27:34,036 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:27:34,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 13:27:34,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-13 13:27:34,241 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:27:34,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:27:34,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1341280858, now seen corresponding path program 1 times [2024-11-13 13:27:34,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:27:34,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538999125] [2024-11-13 13:27:34,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:34,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:27:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:34,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:27:34,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:27:34,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538999125] [2024-11-13 13:27:34,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538999125] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:27:34,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269334070] [2024-11-13 13:27:34,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:34,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:27:34,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:27:34,359 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:27:34,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:27:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:34,448 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 13:27:34,450 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:27:34,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:27:34,530 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:27:34,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:27:34,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269334070] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:27:34,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:27:34,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-13 13:27:34,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902082130] [2024-11-13 13:27:34,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:27:34,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:27:34,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:27:34,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:27:34,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:27:34,598 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 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) [2024-11-13 13:27:34,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:27:34,787 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2024-11-13 13:27:34,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 13:27:34,788 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 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 11 [2024-11-13 13:27:34,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:27:34,788 INFO L225 Difference]: With dead ends: 71 [2024-11-13 13:27:34,789 INFO L226 Difference]: Without dead ends: 71 [2024-11-13 13:27:34,789 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2024-11-13 13:27:34,790 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 65 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:27:34,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 32 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:27:34,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-13 13:27:34,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 42. [2024-11-13 13:27:34,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 41 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:34,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2024-11-13 13:27:34,798 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 11 [2024-11-13 13:27:34,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:27:34,798 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2024-11-13 13:27:34,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 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) [2024-11-13 13:27:34,798 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2024-11-13 13:27:34,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 13:27:34,799 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:27:34,799 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:27:34,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 13:27:34,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:27:35,000 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:27:35,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:27:35,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1472631233, now seen corresponding path program 2 times [2024-11-13 13:27:35,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:27:35,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323572869] [2024-11-13 13:27:35,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:35,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:27:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:35,123 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:27:35,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:27:35,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323572869] [2024-11-13 13:27:35,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323572869] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:27:35,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:27:35,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:27:35,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258593032] [2024-11-13 13:27:35,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:27:35,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:27:35,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:27:35,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:27:35,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:27:35,126 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:35,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:27:35,161 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2024-11-13 13:27:35,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:27:35,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-13 13:27:35,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:27:35,162 INFO L225 Difference]: With dead ends: 40 [2024-11-13 13:27:35,162 INFO L226 Difference]: Without dead ends: 40 [2024-11-13 13:27:35,162 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:27:35,163 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:27:35,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 19 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:27:35,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-13 13:27:35,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-13 13:27:35,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 39 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:35,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2024-11-13 13:27:35,167 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 15 [2024-11-13 13:27:35,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:27:35,168 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2024-11-13 13:27:35,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:35,168 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2024-11-13 13:27:35,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 13:27:35,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:27:35,169 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:27:35,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 13:27:35,169 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:27:35,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:27:35,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1472631232, now seen corresponding path program 1 times [2024-11-13 13:27:35,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:27:35,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169202765] [2024-11-13 13:27:35,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:35,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:27:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:35,306 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:27:35,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:27:35,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169202765] [2024-11-13 13:27:35,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169202765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:27:35,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:27:35,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:27:35,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284735436] [2024-11-13 13:27:35,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:27:35,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:27:35,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:27:35,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:27:35,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:27:35,308 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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) [2024-11-13 13:27:35,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:27:35,349 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2024-11-13 13:27:35,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:27:35,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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 15 [2024-11-13 13:27:35,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:27:35,350 INFO L225 Difference]: With dead ends: 65 [2024-11-13 13:27:35,351 INFO L226 Difference]: Without dead ends: 65 [2024-11-13 13:27:35,351 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:27:35,352 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:27:35,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 30 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:27:35,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-13 13:27:35,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2024-11-13 13:27:35,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.263157894736842) internal successors, (72), 61 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) [2024-11-13 13:27:35,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2024-11-13 13:27:35,357 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 15 [2024-11-13 13:27:35,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:27:35,357 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2024-11-13 13:27:35,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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) [2024-11-13 13:27:35,357 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2024-11-13 13:27:35,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 13:27:35,358 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:27:35,358 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:27:35,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 13:27:35,358 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:27:35,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:27:35,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1272242427, now seen corresponding path program 1 times [2024-11-13 13:27:35,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:27:35,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697283274] [2024-11-13 13:27:35,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:35,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:27:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:35,499 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:27:35,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:27:35,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697283274] [2024-11-13 13:27:35,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697283274] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:27:35,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54415202] [2024-11-13 13:27:35,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:35,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:27:35,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:27:35,502 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:27:35,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:27:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:35,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 13:27:35,578 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:27:35,718 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:27:35,719 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:27:35,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-11-13 13:27:35,854 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:27:35,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54415202] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:27:35,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:27:35,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-13 13:27:35,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694590069] [2024-11-13 13:27:35,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:27:35,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 13:27:35,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:27:35,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 13:27:35,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:27:35,856 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand has 9 states, 8 states have (on average 4.25) internal successors, (34), 9 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) [2024-11-13 13:27:35,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:27:35,981 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2024-11-13 13:27:35,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:27:35,982 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.25) internal successors, (34), 9 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 20 [2024-11-13 13:27:35,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:27:35,982 INFO L225 Difference]: With dead ends: 67 [2024-11-13 13:27:35,983 INFO L226 Difference]: Without dead ends: 67 [2024-11-13 13:27:35,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:27:35,983 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 35 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:27:35,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 44 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:27:35,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-13 13:27:35,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2024-11-13 13:27:35,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.2586206896551724) internal successors, (73), 62 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:35,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2024-11-13 13:27:35,988 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 20 [2024-11-13 13:27:35,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:27:35,988 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2024-11-13 13:27:35,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.25) internal successors, (34), 9 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) [2024-11-13 13:27:35,989 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2024-11-13 13:27:35,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 13:27:35,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:27:35,989 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1] [2024-11-13 13:27:36,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 13:27:36,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:27:36,190 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:27:36,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:27:36,192 INFO L85 PathProgramCache]: Analyzing trace with hash -473597764, now seen corresponding path program 2 times [2024-11-13 13:27:36,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:27:36,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672950993] [2024-11-13 13:27:36,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:36,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:27:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:36,419 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:27:36,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:27:36,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672950993] [2024-11-13 13:27:36,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672950993] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:27:36,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255463165] [2024-11-13 13:27:36,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:27:36,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:27:36,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:27:36,424 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:27:36,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:27:36,507 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:27:36,507 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:27:36,509 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 13:27:36,510 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:27:36,616 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:27:36,617 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:27:36,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255463165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:27:36,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:27:36,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2024-11-13 13:27:36,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552669233] [2024-11-13 13:27:36,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:27:36,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:27:36,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:27:36,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:27:36,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-13 13:27:36,620 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:36,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:27:36,727 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2024-11-13 13:27:36,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:27:36,728 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-13 13:27:36,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:27:36,728 INFO L225 Difference]: With dead ends: 55 [2024-11-13 13:27:36,728 INFO L226 Difference]: Without dead ends: 55 [2024-11-13 13:27:36,729 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2024-11-13 13:27:36,729 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:27:36,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 37 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:27:36,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-13 13:27:36,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2024-11-13 13:27:36,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:36,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2024-11-13 13:27:36,737 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 21 [2024-11-13 13:27:36,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:27:36,738 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2024-11-13 13:27:36,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:36,738 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2024-11-13 13:27:36,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-13 13:27:36,739 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:27:36,739 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:27:36,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 13:27:36,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 13:27:36,939 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:27:36,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:27:36,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1712236569, now seen corresponding path program 1 times [2024-11-13 13:27:36,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:27:36,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811698629] [2024-11-13 13:27:36,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:36,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:27:36,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:37,039 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:27:37,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:27:37,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811698629] [2024-11-13 13:27:37,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811698629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:27:37,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356995751] [2024-11-13 13:27:37,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:37,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:27:37,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:27:37,043 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:27:37,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 13:27:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:37,141 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 13:27:37,143 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:27:37,472 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#b~0#1.base_17| Int) (|v_ULTIMATE.start_main_~#mask~0#1.base_12| Int)) (and (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_17| 1) |v_ULTIMATE.start_main_~#mask~0#1.base_12|) 0) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_17|) 0) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_17| 0) |v_ULTIMATE.start_main_~#mask~0#1.base_12| 0)))) is different from true [2024-11-13 13:27:37,473 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 13:27:37,473 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:27:37,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356995751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:27:37,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:27:37,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-13 13:27:37,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8931267] [2024-11-13 13:27:37,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:27:37,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:27:37,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:27:37,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:27:37,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2024-11-13 13:27:37,475 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:37,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:27:37,521 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2024-11-13 13:27:37,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:27:37,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-13 13:27:37,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:27:37,523 INFO L225 Difference]: With dead ends: 54 [2024-11-13 13:27:37,523 INFO L226 Difference]: Without dead ends: 52 [2024-11-13 13:27:37,523 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2024-11-13 13:27:37,523 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:27:37,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 18 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 25 Unchecked, 0.0s Time] [2024-11-13 13:27:37,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-13 13:27:37,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-13 13:27:37,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 51 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:37,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2024-11-13 13:27:37,532 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 23 [2024-11-13 13:27:37,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:27:37,532 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2024-11-13 13:27:37,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:37,536 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2024-11-13 13:27:37,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-13 13:27:37,537 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:27:37,537 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:27:37,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 13:27:37,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 13:27:37,738 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:27:37,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:27:37,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1712240152, now seen corresponding path program 1 times [2024-11-13 13:27:37,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:27:37,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69317739] [2024-11-13 13:27:37,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:37,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:27:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:37,866 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 13:27:37,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:27:37,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69317739] [2024-11-13 13:27:37,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69317739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:27:37,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324387131] [2024-11-13 13:27:37,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:37,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:27:37,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:27:37,869 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:27:37,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 13:27:37,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:37,955 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 13:27:37,957 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:27:38,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 13:27:38,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 13:27:38,266 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:27:38,267 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:27:38,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-13 13:27:38,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-13 13:27:38,571 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:27:38,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324387131] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:27:38,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:27:38,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 11, 11] total 21 [2024-11-13 13:27:38,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063771981] [2024-11-13 13:27:38,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:27:38,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 13:27:38,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:27:38,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 13:27:38,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2024-11-13 13:27:38,574 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:38,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:27:38,807 INFO L93 Difference]: Finished difference Result 83 states and 92 transitions. [2024-11-13 13:27:38,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 13:27:38,808 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 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 23 [2024-11-13 13:27:38,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:27:38,809 INFO L225 Difference]: With dead ends: 83 [2024-11-13 13:27:38,809 INFO L226 Difference]: Without dead ends: 83 [2024-11-13 13:27:38,809 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2024-11-13 13:27:38,810 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 37 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:27:38,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 98 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:27:38,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-13 13:27:38,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 56. [2024-11-13 13:27:38,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 55 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:38,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2024-11-13 13:27:38,815 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 23 [2024-11-13 13:27:38,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:27:38,815 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2024-11-13 13:27:38,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:38,815 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2024-11-13 13:27:38,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 13:27:38,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:27:38,816 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-13 13:27:38,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-13 13:27:39,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 13:27:39,017 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:27:39,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:27:39,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1571122687, now seen corresponding path program 1 times [2024-11-13 13:27:39,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:27:39,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666793665] [2024-11-13 13:27:39,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:39,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:27:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:39,217 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 28 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:27:39,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:27:39,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666793665] [2024-11-13 13:27:39,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666793665] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:27:39,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6932018] [2024-11-13 13:27:39,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:39,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:27:39,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:27:39,220 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:27:39,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 13:27:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:39,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 13:27:39,312 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:27:39,436 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:27:39,436 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:27:39,548 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:27:39,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6932018] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:27:39,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:27:39,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-13 13:27:39,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873701681] [2024-11-13 13:27:39,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:27:39,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 13:27:39,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:27:39,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 13:27:39,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-13 13:27:39,550 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:39,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:27:39,855 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2024-11-13 13:27:39,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 13:27:39,856 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 0 states have call successors, (0), 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 [2024-11-13 13:27:39,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:27:39,857 INFO L225 Difference]: With dead ends: 56 [2024-11-13 13:27:39,857 INFO L226 Difference]: Without dead ends: 56 [2024-11-13 13:27:39,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2024-11-13 13:27:39,861 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 41 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:27:39,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 38 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:27:39,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-13 13:27:39,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-13 13:27:39,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.1568627450980393) internal successors, (59), 55 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) [2024-11-13 13:27:39,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2024-11-13 13:27:39,869 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 29 [2024-11-13 13:27:39,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:27:39,869 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2024-11-13 13:27:39,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:39,869 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2024-11-13 13:27:39,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-13 13:27:39,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:27:39,870 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-13 13:27:39,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 13:27:40,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-13 13:27:40,074 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:27:40,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:27:40,075 INFO L85 PathProgramCache]: Analyzing trace with hash 703469540, now seen corresponding path program 2 times [2024-11-13 13:27:40,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:27:40,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846944654] [2024-11-13 13:27:40,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:40,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:27:40,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:40,326 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 13:27:40,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:27:40,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846944654] [2024-11-13 13:27:40,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846944654] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:27:40,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559795689] [2024-11-13 13:27:40,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:27:40,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:27:40,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:27:40,329 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:27:40,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 13:27:40,435 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:27:40,435 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:27:40,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 13:27:40,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:27:40,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-13 13:27:40,482 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 [2024-11-13 13:27:40,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-13 13:27:40,804 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 13:27:40,805 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:27:41,061 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 13:27:41,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559795689] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:27:41,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:27:41,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 8 [2024-11-13 13:27:41,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063117622] [2024-11-13 13:27:41,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:27:41,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 13:27:41,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:27:41,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 13:27:41,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:27:41,064 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand has 9 states, 8 states have (on average 7.5) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:41,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:27:41,187 INFO L93 Difference]: Finished difference Result 132 states and 143 transitions. [2024-11-13 13:27:41,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:27:41,188 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-13 13:27:41,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:27:41,189 INFO L225 Difference]: With dead ends: 132 [2024-11-13 13:27:41,189 INFO L226 Difference]: Without dead ends: 132 [2024-11-13 13:27:41,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:27:41,190 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 25 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:27:41,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 64 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:27:41,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-13 13:27:41,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 126. [2024-11-13 13:27:41,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 121 states have (on average 1.1818181818181819) internal successors, (143), 125 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:41,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 143 transitions. [2024-11-13 13:27:41,200 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 143 transitions. Word has length 33 [2024-11-13 13:27:41,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:27:41,201 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 143 transitions. [2024-11-13 13:27:41,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:41,201 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 143 transitions. [2024-11-13 13:27:41,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 13:27:41,202 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:27:41,202 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:27:41,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 13:27:41,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 13:27:41,406 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:27:41,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:27:41,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1773956411, now seen corresponding path program 1 times [2024-11-13 13:27:41,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:27:41,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051743900] [2024-11-13 13:27:41,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:41,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:27:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:41,626 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 53 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:27:41,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:27:41,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051743900] [2024-11-13 13:27:41,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051743900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:27:41,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603235046] [2024-11-13 13:27:41,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:41,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:27:41,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:27:41,632 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:27:41,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 13:27:41,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:41,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 13:27:41,732 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:27:41,905 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 42 proven. 31 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 13:27:41,905 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:27:42,019 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 42 proven. 31 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 13:27:42,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603235046] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:27:42,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:27:42,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 15 [2024-11-13 13:27:42,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149279170] [2024-11-13 13:27:42,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:27:42,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 13:27:42,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:27:42,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 13:27:42,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-11-13 13:27:42,021 INFO L87 Difference]: Start difference. First operand 126 states and 143 transitions. Second operand has 15 states, 15 states have (on average 4.4) internal successors, (66), 15 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:42,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:27:42,273 INFO L93 Difference]: Finished difference Result 122 states and 136 transitions. [2024-11-13 13:27:42,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:27:42,275 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.4) internal successors, (66), 15 states have internal predecessors, (66), 0 states have call successors, (0), 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 35 [2024-11-13 13:27:42,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:27:42,276 INFO L225 Difference]: With dead ends: 122 [2024-11-13 13:27:42,277 INFO L226 Difference]: Without dead ends: 122 [2024-11-13 13:27:42,278 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2024-11-13 13:27:42,279 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 19 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:27:42,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 63 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:27:42,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-13 13:27:42,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2024-11-13 13:27:42,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 115 states have (on average 1.1565217391304348) internal successors, (133), 119 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:42,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 133 transitions. [2024-11-13 13:27:42,288 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 133 transitions. Word has length 35 [2024-11-13 13:27:42,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:27:42,288 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 133 transitions. [2024-11-13 13:27:42,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.4) internal successors, (66), 15 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:42,288 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 133 transitions. [2024-11-13 13:27:42,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-13 13:27:42,289 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:27:42,289 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:27:42,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-13 13:27:42,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 13:27:42,494 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:27:42,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:27:42,495 INFO L85 PathProgramCache]: Analyzing trace with hash 484539324, now seen corresponding path program 2 times [2024-11-13 13:27:42,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:27:42,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614106913] [2024-11-13 13:27:42,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:42,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:27:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:42,631 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-13 13:27:42,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:27:42,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614106913] [2024-11-13 13:27:42,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614106913] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:27:42,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032209313] [2024-11-13 13:27:42,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:27:42,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:27:42,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:27:42,634 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:27:42,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 13:27:42,742 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:27:42,742 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:27:42,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 13:27:42,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:27:43,024 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 34 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 13:27:43,024 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:27:43,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-13 13:27:43,309 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 34 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 13:27:43,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032209313] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:27:43,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:27:43,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2024-11-13 13:27:43,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539712306] [2024-11-13 13:27:43,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:27:43,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 13:27:43,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:27:43,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 13:27:43,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-13 13:27:43,312 INFO L87 Difference]: Start difference. First operand 120 states and 133 transitions. Second operand has 15 states, 15 states have (on average 5.6) internal successors, (84), 15 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:43,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:27:43,545 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2024-11-13 13:27:43,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 13:27:43,546 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.6) internal successors, (84), 15 states have internal predecessors, (84), 0 states have call successors, (0), 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 41 [2024-11-13 13:27:43,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:27:43,546 INFO L225 Difference]: With dead ends: 127 [2024-11-13 13:27:43,547 INFO L226 Difference]: Without dead ends: 127 [2024-11-13 13:27:43,547 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2024-11-13 13:27:43,548 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 119 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:27:43,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 92 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:27:43,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-13 13:27:43,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 123. [2024-11-13 13:27:43,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 118 states have (on average 1.1440677966101696) internal successors, (135), 122 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:43,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 135 transitions. [2024-11-13 13:27:43,553 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 135 transitions. Word has length 41 [2024-11-13 13:27:43,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:27:43,553 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 135 transitions. [2024-11-13 13:27:43,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.6) internal successors, (84), 15 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:43,554 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 135 transitions. [2024-11-13 13:27:43,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-13 13:27:43,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:27:43,555 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 3, 2, 2, 2, 2, 2, 1, 1, 1] [2024-11-13 13:27:43,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-13 13:27:43,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 13:27:43,759 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:27:43,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:27:43,759 INFO L85 PathProgramCache]: Analyzing trace with hash 360701151, now seen corresponding path program 2 times [2024-11-13 13:27:43,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:27:43,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545426333] [2024-11-13 13:27:43,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:43,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:27:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:44,029 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 24 proven. 145 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 13:27:44,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:27:44,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545426333] [2024-11-13 13:27:44,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545426333] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:27:44,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771537529] [2024-11-13 13:27:44,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:27:44,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:27:44,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:27:44,032 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:27:44,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 13:27:44,132 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:27:44,132 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:27:44,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 13:27:44,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:27:44,323 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 37 proven. 132 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 13:27:44,324 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:27:44,465 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 37 proven. 132 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 13:27:44,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771537529] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:27:44,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:27:44,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2024-11-13 13:27:44,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745945234] [2024-11-13 13:27:44,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:27:44,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 13:27:44,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:27:44,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 13:27:44,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2024-11-13 13:27:44,467 INFO L87 Difference]: Start difference. First operand 123 states and 135 transitions. Second operand has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:44,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:27:44,869 INFO L93 Difference]: Finished difference Result 123 states and 133 transitions. [2024-11-13 13:27:44,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 13:27:44,869 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 0 states have call successors, (0), 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 53 [2024-11-13 13:27:44,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:27:44,870 INFO L225 Difference]: With dead ends: 123 [2024-11-13 13:27:44,870 INFO L226 Difference]: Without dead ends: 123 [2024-11-13 13:27:44,871 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 92 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=223, Invalid=589, Unknown=0, NotChecked=0, Total=812 [2024-11-13 13:27:44,872 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 21 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:27:44,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 75 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:27:44,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-13 13:27:44,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2024-11-13 13:27:44,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 116 states have (on average 1.1206896551724137) internal successors, (130), 120 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:44,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 130 transitions. [2024-11-13 13:27:44,879 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 130 transitions. Word has length 53 [2024-11-13 13:27:44,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:27:44,880 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 130 transitions. [2024-11-13 13:27:44,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:44,880 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 130 transitions. [2024-11-13 13:27:44,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-13 13:27:44,885 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:27:44,885 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2024-11-13 13:27:44,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 13:27:45,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:27:45,086 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:27:45,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:27:45,087 INFO L85 PathProgramCache]: Analyzing trace with hash 443806429, now seen corresponding path program 3 times [2024-11-13 13:27:45,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:27:45,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503244709] [2024-11-13 13:27:45,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:45,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:27:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:45,388 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 12 proven. 124 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-13 13:27:45,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:27:45,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503244709] [2024-11-13 13:27:45,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503244709] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:27:45,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335155780] [2024-11-13 13:27:45,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:27:45,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:27:45,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:27:45,392 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:27:45,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 13:27:45,505 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 13:27:45,505 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:27:45,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 13:27:45,510 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:27:45,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:27:45,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-11-13 13:27:45,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-13 13:27:45,924 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-13 13:27:45,924 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:27:45,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335155780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:27:45,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:27:45,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2024-11-13 13:27:45,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102591652] [2024-11-13 13:27:45,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:27:45,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:27:45,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:27:45,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:27:45,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-13 13:27:45,928 INFO L87 Difference]: Start difference. First operand 121 states and 130 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 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) [2024-11-13 13:27:45,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:27:45,983 INFO L93 Difference]: Finished difference Result 119 states and 128 transitions. [2024-11-13 13:27:45,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:27:45,985 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 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 62 [2024-11-13 13:27:45,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:27:45,986 INFO L225 Difference]: With dead ends: 119 [2024-11-13 13:27:45,986 INFO L226 Difference]: Without dead ends: 119 [2024-11-13 13:27:45,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-13 13:27:45,987 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 35 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:27:45,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 27 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:27:45,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-13 13:27:45,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 92. [2024-11-13 13:27:45,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 89 states have (on average 1.0786516853932584) internal successors, (96), 91 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:45,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2024-11-13 13:27:45,994 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 62 [2024-11-13 13:27:45,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:27:45,995 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2024-11-13 13:27:45,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 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) [2024-11-13 13:27:45,995 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2024-11-13 13:27:45,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-13 13:27:45,996 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:27:45,996 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:27:46,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-13 13:27:46,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:27:46,197 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:27:46,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:27:46,197 INFO L85 PathProgramCache]: Analyzing trace with hash 122891985, now seen corresponding path program 1 times [2024-11-13 13:27:46,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:27:46,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376054646] [2024-11-13 13:27:46,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:46,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:27:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:46,499 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 25 proven. 111 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-13 13:27:46,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:27:46,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376054646] [2024-11-13 13:27:46,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376054646] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:27:46,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399257623] [2024-11-13 13:27:46,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:46,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:27:46,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:27:46,503 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:27:46,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 13:27:46,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:46,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 13:27:46,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:27:46,829 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 48 proven. 88 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-13 13:27:46,829 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:27:46,996 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 48 proven. 88 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-13 13:27:46,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399257623] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:27:46,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:27:46,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-11-13 13:27:46,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190915170] [2024-11-13 13:27:46,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:27:46,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 13:27:46,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:27:46,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 13:27:46,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2024-11-13 13:27:46,999 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:47,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:27:47,500 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2024-11-13 13:27:47,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 13:27:47,501 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 0 states have call successors, (0), 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 66 [2024-11-13 13:27:47,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:27:47,501 INFO L225 Difference]: With dead ends: 93 [2024-11-13 13:27:47,502 INFO L226 Difference]: Without dead ends: 93 [2024-11-13 13:27:47,502 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2024-11-13 13:27:47,503 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 40 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:27:47,503 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 75 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:27:47,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-13 13:27:47,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2024-11-13 13:27:47,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 89 states have (on average 1.0561797752808988) internal successors, (94), 91 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:47,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 94 transitions. [2024-11-13 13:27:47,507 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 94 transitions. Word has length 66 [2024-11-13 13:27:47,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:27:47,507 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 94 transitions. [2024-11-13 13:27:47,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:47,508 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 94 transitions. [2024-11-13 13:27:47,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-13 13:27:47,508 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:27:47,509 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:27:47,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-13 13:27:47,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:27:47,713 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:27:47,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:27:47,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1949050164, now seen corresponding path program 2 times [2024-11-13 13:27:47,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:27:47,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122120654] [2024-11-13 13:27:47,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:47,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:27:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:47,943 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 143 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-13 13:27:47,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:27:47,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122120654] [2024-11-13 13:27:47,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122120654] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:27:47,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531403961] [2024-11-13 13:27:47,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:27:47,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:27:47,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:27:47,947 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:27:47,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 13:27:48,042 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 13:27:48,042 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:27:48,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 13:27:48,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:27:48,651 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#b~0#1.base_25| Int) (|v_ULTIMATE.start_main_~#mask~0#1.base_20| Int) (v_DerPreprocessor_3 Int) (v_DerPreprocessor_2 Int)) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#mask~0#1.base_20|) 0) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_25|) 0) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_25| 0) |v_ULTIMATE.start_main_~#mask~0#1.base_20| 0)) (= v_DerPreprocessor_2 (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_25| v_DerPreprocessor_2) |v_ULTIMATE.start_main_~#mask~0#1.base_20| v_DerPreprocessor_3) |v_ULTIMATE.start_main_~#b~0#1.base_25|)))) is different from true [2024-11-13 13:27:48,652 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-11-13 13:27:48,652 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:27:48,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531403961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:27:48,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:27:48,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-13 13:27:48,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748930860] [2024-11-13 13:27:48,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:27:48,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:27:48,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:27:48,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:27:48,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=39, Unknown=1, NotChecked=12, Total=72 [2024-11-13 13:27:48,654 INFO L87 Difference]: Start difference. First operand 92 states and 94 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:48,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:27:48,675 INFO L93 Difference]: Finished difference Result 91 states and 93 transitions. [2024-11-13 13:27:48,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:27:48,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-13 13:27:48,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:27:48,677 INFO L225 Difference]: With dead ends: 91 [2024-11-13 13:27:48,677 INFO L226 Difference]: Without dead ends: 78 [2024-11-13 13:27:48,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=39, Unknown=1, NotChecked=12, Total=72 [2024-11-13 13:27:48,679 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:27:48,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 16 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 20 Unchecked, 0.0s Time] [2024-11-13 13:27:48,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-13 13:27:48,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-13 13:27:48,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 77 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) [2024-11-13 13:27:48,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2024-11-13 13:27:48,682 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 70 [2024-11-13 13:27:48,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:27:48,682 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2024-11-13 13:27:48,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:48,682 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2024-11-13 13:27:48,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-13 13:27:48,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:27:48,683 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 4, 3, 3, 3, 3, 3, 1, 1, 1] [2024-11-13 13:27:48,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-13 13:27:48,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-13 13:27:48,883 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:27:48,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:27:48,884 INFO L85 PathProgramCache]: Analyzing trace with hash -594623384, now seen corresponding path program 3 times [2024-11-13 13:27:48,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:27:48,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843734870] [2024-11-13 13:27:48,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:48,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:27:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:49,109 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 177 proven. 32 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-13 13:27:49,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:27:49,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843734870] [2024-11-13 13:27:49,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843734870] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:27:49,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735594532] [2024-11-13 13:27:49,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:27:49,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:27:49,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:27:49,113 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:27:49,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 13:27:49,223 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 13:27:49,223 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:27:49,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 13:27:49,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:27:49,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-13 13:27:49,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-13 13:27:49,582 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 0 proven. 188 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2024-11-13 13:27:49,583 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:27:50,297 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 0 proven. 188 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2024-11-13 13:27:50,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735594532] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:27:50,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:27:50,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2024-11-13 13:27:50,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169266928] [2024-11-13 13:27:50,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:27:50,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 13:27:50,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:27:50,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 13:27:50,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-11-13 13:27:50,300 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand has 15 states, 14 states have (on average 5.071428571428571) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:50,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:27:50,572 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2024-11-13 13:27:50,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:27:50,573 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.071428571428571) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 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 75 [2024-11-13 13:27:50,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:27:50,573 INFO L225 Difference]: With dead ends: 87 [2024-11-13 13:27:50,573 INFO L226 Difference]: Without dead ends: 87 [2024-11-13 13:27:50,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2024-11-13 13:27:50,574 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 41 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:27:50,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 18 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:27:50,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-13 13:27:50,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 77. [2024-11-13 13:27:50,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 76 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) [2024-11-13 13:27:50,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2024-11-13 13:27:50,578 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 75 [2024-11-13 13:27:50,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:27:50,578 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2024-11-13 13:27:50,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.071428571428571) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:50,578 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2024-11-13 13:27:50,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-13 13:27:50,579 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:27:50,579 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 4, 3, 3, 3, 3, 3, 1, 1, 1] [2024-11-13 13:27:50,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-13 13:27:50,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:27:50,780 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:27:50,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:27:50,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1253455666, now seen corresponding path program 1 times [2024-11-13 13:27:50,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:27:50,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640033944] [2024-11-13 13:27:50,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:50,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:27:50,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:51,161 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-13 13:27:51,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:27:51,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640033944] [2024-11-13 13:27:51,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640033944] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:27:51,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878731099] [2024-11-13 13:27:51,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:51,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:27:51,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:27:51,164 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:27:51,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 13:27:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:51,299 INFO L255 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-13 13:27:51,301 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:27:51,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-13 13:27:51,740 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-13 13:27:51,740 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:27:52,242 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-13 13:27:52,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878731099] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:27:52,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:27:52,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-11-13 13:27:52,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747333549] [2024-11-13 13:27:52,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:27:52,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 13:27:52,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:27:52,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 13:27:52,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-11-13 13:27:52,245 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand has 20 states, 19 states have (on average 4.947368421052632) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:52,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:27:52,682 INFO L93 Difference]: Finished difference Result 107 states and 114 transitions. [2024-11-13 13:27:52,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 13:27:52,682 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.947368421052632) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-13 13:27:52,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:27:52,683 INFO L225 Difference]: With dead ends: 107 [2024-11-13 13:27:52,683 INFO L226 Difference]: Without dead ends: 107 [2024-11-13 13:27:52,684 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=230, Invalid=640, Unknown=0, NotChecked=0, Total=870 [2024-11-13 13:27:52,684 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 35 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:27:52,684 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 15 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:27:52,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-13 13:27:52,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 101. [2024-11-13 13:27:52,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.08) internal successors, (108), 100 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) [2024-11-13 13:27:52,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 108 transitions. [2024-11-13 13:27:52,688 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 108 transitions. Word has length 76 [2024-11-13 13:27:52,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:27:52,688 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 108 transitions. [2024-11-13 13:27:52,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.947368421052632) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:52,689 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 108 transitions. [2024-11-13 13:27:52,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-13 13:27:52,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:27:52,690 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 4, 3, 3, 3, 3, 3, 1, 1, 1] [2024-11-13 13:27:52,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 13:27:52,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:27:52,890 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:27:52,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:27:52,891 INFO L85 PathProgramCache]: Analyzing trace with hash -68166608, now seen corresponding path program 2 times [2024-11-13 13:27:52,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:27:52,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543861250] [2024-11-13 13:27:52,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:52,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:27:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:53,373 INFO L134 CoverageAnalysis]: Checked inductivity of 822 backedges. 191 proven. 582 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-13 13:27:53,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:27:53,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543861250] [2024-11-13 13:27:53,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543861250] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:27:53,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654635537] [2024-11-13 13:27:53,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:27:53,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:27:53,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:27:53,376 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:27:53,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 13:27:53,531 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:27:53,531 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:27:53,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 13:27:53,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:27:53,812 INFO L134 CoverageAnalysis]: Checked inductivity of 822 backedges. 373 proven. 350 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-13 13:27:53,812 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:27:54,007 INFO L134 CoverageAnalysis]: Checked inductivity of 822 backedges. 373 proven. 350 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-13 13:27:54,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654635537] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:27:54,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:27:54,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 12] total 25 [2024-11-13 13:27:54,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250411114] [2024-11-13 13:27:54,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:27:54,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 13:27:54,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:27:54,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 13:27:54,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2024-11-13 13:27:54,010 INFO L87 Difference]: Start difference. First operand 101 states and 108 transitions. Second operand has 25 states, 25 states have (on average 4.72) internal successors, (118), 25 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:54,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:27:54,507 INFO L93 Difference]: Finished difference Result 131 states and 139 transitions. [2024-11-13 13:27:54,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-13 13:27:54,507 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.72) internal successors, (118), 25 states have internal predecessors, (118), 0 states have call successors, (0), 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 100 [2024-11-13 13:27:54,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:27:54,508 INFO L225 Difference]: With dead ends: 131 [2024-11-13 13:27:54,508 INFO L226 Difference]: Without dead ends: 131 [2024-11-13 13:27:54,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 183 SyntacticMatches, 9 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=416, Invalid=1390, Unknown=0, NotChecked=0, Total=1806 [2024-11-13 13:27:54,510 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 13 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:27:54,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 30 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:27:54,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-13 13:27:54,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2024-11-13 13:27:54,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.0714285714285714) internal successors, (135), 126 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:54,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 135 transitions. [2024-11-13 13:27:54,513 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 135 transitions. Word has length 100 [2024-11-13 13:27:54,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:27:54,514 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 135 transitions. [2024-11-13 13:27:54,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.72) internal successors, (118), 25 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:54,514 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 135 transitions. [2024-11-13 13:27:54,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-13 13:27:54,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:27:54,515 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 5, 4, 4, 4, 4, 4, 1, 1, 1] [2024-11-13 13:27:54,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 13:27:54,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:27:54,718 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:27:54,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:27:54,719 INFO L85 PathProgramCache]: Analyzing trace with hash -190663289, now seen corresponding path program 3 times [2024-11-13 13:27:54,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:27:54,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095160061] [2024-11-13 13:27:54,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:54,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:27:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:55,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1217 backedges. 682 proven. 276 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2024-11-13 13:27:55,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:27:55,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095160061] [2024-11-13 13:27:55,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095160061] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:27:55,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775865160] [2024-11-13 13:27:55,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:27:55,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:27:55,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:27:55,120 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:27:55,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 13:27:55,311 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-13 13:27:55,311 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:27:55,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-13 13:27:55,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:27:55,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1217 backedges. 262 proven. 708 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2024-11-13 13:27:55,968 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:27:56,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1217 backedges. 78 proven. 892 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2024-11-13 13:27:56,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775865160] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:27:56,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:27:56,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17, 17] total 40 [2024-11-13 13:27:56,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650016740] [2024-11-13 13:27:56,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:27:56,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-13 13:27:56,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:27:56,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-13 13:27:56,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1346, Unknown=0, NotChecked=0, Total=1560 [2024-11-13 13:27:56,598 INFO L87 Difference]: Start difference. First operand 127 states and 135 transitions. Second operand has 40 states, 40 states have (on average 4.075) internal successors, (163), 40 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:57,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:27:57,860 INFO L93 Difference]: Finished difference Result 131 states and 137 transitions. [2024-11-13 13:27:57,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-13 13:27:57,861 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.075) internal successors, (163), 40 states have internal predecessors, (163), 0 states have call successors, (0), 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 122 [2024-11-13 13:27:57,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:27:57,862 INFO L225 Difference]: With dead ends: 131 [2024-11-13 13:27:57,862 INFO L226 Difference]: Without dead ends: 131 [2024-11-13 13:27:57,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 214 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1147 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=885, Invalid=3945, Unknown=0, NotChecked=0, Total=4830 [2024-11-13 13:27:57,865 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 155 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:27:57,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 70 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 13:27:57,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-13 13:27:57,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2024-11-13 13:27:57,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.0555555555555556) internal successors, (133), 126 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:57,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 133 transitions. [2024-11-13 13:27:57,870 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 133 transitions. Word has length 122 [2024-11-13 13:27:57,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:27:57,870 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 133 transitions. [2024-11-13 13:27:57,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 4.075) internal successors, (163), 40 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:57,870 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 133 transitions. [2024-11-13 13:27:57,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-13 13:27:57,871 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:27:57,872 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 24, 24, 5, 4, 4, 4, 4, 4, 1, 1, 1] [2024-11-13 13:27:57,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-13 13:27:58,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-13 13:27:58,076 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:27:58,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:27:58,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1165107010, now seen corresponding path program 4 times [2024-11-13 13:27:58,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:27:58,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128572940] [2024-11-13 13:27:58,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:58,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:27:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:58,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1316 backedges. 201 proven. 1021 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-13 13:27:58,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:27:58,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128572940] [2024-11-13 13:27:58,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128572940] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:27:58,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552744797] [2024-11-13 13:27:58,618 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 13:27:58,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:27:58,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:27:58,620 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:27:58,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 13:27:58,845 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 13:27:58,845 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:27:58,848 INFO L255 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 13:27:58,851 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:27:59,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1316 backedges. 238 proven. 984 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-13 13:27:59,358 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:27:59,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1316 backedges. 238 proven. 984 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-13 13:27:59,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552744797] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:27:59,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:27:59,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2024-11-13 13:27:59,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237685289] [2024-11-13 13:27:59,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:27:59,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-13 13:27:59,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:27:59,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-13 13:27:59,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=1086, Unknown=0, NotChecked=0, Total=1482 [2024-11-13 13:27:59,837 INFO L87 Difference]: Start difference. First operand 127 states and 133 transitions. Second operand has 39 states, 39 states have (on average 5.17948717948718) internal successors, (202), 39 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:01,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:28:01,450 INFO L93 Difference]: Finished difference Result 321 states and 342 transitions. [2024-11-13 13:28:01,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-11-13 13:28:01,451 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.17948717948718) internal successors, (202), 39 states have internal predecessors, (202), 0 states have call successors, (0), 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 126 [2024-11-13 13:28:01,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:28:01,452 INFO L225 Difference]: With dead ends: 321 [2024-11-13 13:28:01,452 INFO L226 Difference]: Without dead ends: 321 [2024-11-13 13:28:01,455 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 224 SyntacticMatches, 7 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4158 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2681, Invalid=7621, Unknown=0, NotChecked=0, Total=10302 [2024-11-13 13:28:01,456 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 9 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:28:01,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 40 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 13:28:01,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-11-13 13:28:01,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 317. [2024-11-13 13:28:01,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 316 states have (on average 1.0696202531645569) internal successors, (338), 316 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:01,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 338 transitions. [2024-11-13 13:28:01,466 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 338 transitions. Word has length 126 [2024-11-13 13:28:01,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:28:01,466 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 338 transitions. [2024-11-13 13:28:01,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.17948717948718) internal successors, (202), 39 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:01,466 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 338 transitions. [2024-11-13 13:28:01,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-13 13:28:01,470 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:28:01,470 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 49, 49, 10, 9, 9, 9, 9, 9, 1, 1, 1] [2024-11-13 13:28:01,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 13:28:01,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-13 13:28:01,674 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:28:01,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:28:01,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1777424668, now seen corresponding path program 5 times [2024-11-13 13:28:01,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:28:01,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629808959] [2024-11-13 13:28:01,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:28:01,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:28:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:28:02,732 INFO L134 CoverageAnalysis]: Checked inductivity of 5526 backedges. 3178 proven. 178 refuted. 0 times theorem prover too weak. 2170 trivial. 0 not checked. [2024-11-13 13:28:02,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:28:02,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629808959] [2024-11-13 13:28:02,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629808959] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:28:02,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802295032] [2024-11-13 13:28:02,732 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 13:28:02,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:28:02,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:28:02,735 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:28:02,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 13:28:03,192 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-13 13:28:03,192 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:28:03,196 INFO L255 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 13:28:03,202 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:28:03,633 INFO L134 CoverageAnalysis]: Checked inductivity of 5526 backedges. 3025 proven. 411 refuted. 0 times theorem prover too weak. 2090 trivial. 0 not checked. [2024-11-13 13:28:03,635 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:28:04,079 INFO L134 CoverageAnalysis]: Checked inductivity of 5526 backedges. 3121 proven. 315 refuted. 0 times theorem prover too weak. 2090 trivial. 0 not checked. [2024-11-13 13:28:04,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802295032] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:28:04,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:28:04,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 36 [2024-11-13 13:28:04,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349301059] [2024-11-13 13:28:04,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:28:04,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-13 13:28:04,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:28:04,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-13 13:28:04,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1022, Unknown=0, NotChecked=0, Total=1260 [2024-11-13 13:28:04,083 INFO L87 Difference]: Start difference. First operand 317 states and 338 transitions. Second operand has 36 states, 36 states have (on average 4.416666666666667) internal successors, (159), 36 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:04,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:28:04,972 INFO L93 Difference]: Finished difference Result 317 states and 332 transitions. [2024-11-13 13:28:04,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-13 13:28:04,973 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.416666666666667) internal successors, (159), 36 states have internal predecessors, (159), 0 states have call successors, (0), 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 256 [2024-11-13 13:28:04,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:28:04,974 INFO L225 Difference]: With dead ends: 317 [2024-11-13 13:28:04,974 INFO L226 Difference]: Without dead ends: 317 [2024-11-13 13:28:04,975 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 488 SyntacticMatches, 4 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=730, Invalid=2692, Unknown=0, NotChecked=0, Total=3422 [2024-11-13 13:28:04,976 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 46 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:28:04,976 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 51 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 13:28:04,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2024-11-13 13:28:04,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2024-11-13 13:28:04,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 316 states have (on average 1.0506329113924051) internal successors, (332), 316 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:04,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 332 transitions. [2024-11-13 13:28:04,990 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 332 transitions. Word has length 256 [2024-11-13 13:28:04,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:28:04,990 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 332 transitions. [2024-11-13 13:28:04,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.416666666666667) internal successors, (159), 36 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:04,991 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 332 transitions. [2024-11-13 13:28:04,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-11-13 13:28:04,997 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:28:04,998 INFO L215 NwaCegarLoop]: trace histogram [55, 55, 54, 54, 10, 9, 9, 9, 9, 9, 1, 1, 1] [2024-11-13 13:28:05,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-13 13:28:05,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-13 13:28:05,201 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:28:05,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:28:05,201 INFO L85 PathProgramCache]: Analyzing trace with hash -2068763965, now seen corresponding path program 6 times [2024-11-13 13:28:05,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:28:05,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918214609] [2024-11-13 13:28:05,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:28:05,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:28:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:28:06,458 INFO L134 CoverageAnalysis]: Checked inductivity of 6606 backedges. 3802 proven. 253 refuted. 0 times theorem prover too weak. 2551 trivial. 0 not checked. [2024-11-13 13:28:06,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:28:06,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918214609] [2024-11-13 13:28:06,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918214609] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:28:06,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974322241] [2024-11-13 13:28:06,460 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 13:28:06,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:28:06,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:28:06,462 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:28:06,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 13:28:06,920 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2024-11-13 13:28:06,921 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:28:06,925 INFO L255 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-13 13:28:06,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:28:07,632 INFO L134 CoverageAnalysis]: Checked inductivity of 6606 backedges. 2991 proven. 323 refuted. 0 times theorem prover too weak. 3292 trivial. 0 not checked. [2024-11-13 13:28:07,632 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:28:08,506 INFO L134 CoverageAnalysis]: Checked inductivity of 6606 backedges. 2991 proven. 323 refuted. 0 times theorem prover too weak. 3292 trivial. 0 not checked. [2024-11-13 13:28:08,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974322241] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:28:08,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:28:08,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 22, 22] total 57 [2024-11-13 13:28:08,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384877992] [2024-11-13 13:28:08,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:28:08,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-13 13:28:08,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:28:08,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-13 13:28:08,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=2696, Unknown=0, NotChecked=0, Total=3192 [2024-11-13 13:28:08,510 INFO L87 Difference]: Start difference. First operand 317 states and 332 transitions. Second operand has 57 states, 57 states have (on average 3.8947368421052633) internal successors, (222), 57 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:11,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:28:11,005 INFO L93 Difference]: Finished difference Result 367 states and 380 transitions. [2024-11-13 13:28:11,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-11-13 13:28:11,006 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.8947368421052633) internal successors, (222), 57 states have internal predecessors, (222), 0 states have call successors, (0), 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 276 [2024-11-13 13:28:11,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:28:11,008 INFO L225 Difference]: With dead ends: 367 [2024-11-13 13:28:11,008 INFO L226 Difference]: Without dead ends: 367 [2024-11-13 13:28:11,011 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3588 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2267, Invalid=11305, Unknown=0, NotChecked=0, Total=13572 [2024-11-13 13:28:11,012 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 428 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:28:11,013 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 36 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 13:28:11,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-11-13 13:28:11,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 317. [2024-11-13 13:28:11,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 316 states have (on average 1.0348101265822784) internal successors, (327), 316 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:11,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 327 transitions. [2024-11-13 13:28:11,024 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 327 transitions. Word has length 276 [2024-11-13 13:28:11,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:28:11,024 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 327 transitions. [2024-11-13 13:28:11,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.8947368421052633) internal successors, (222), 57 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:11,025 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 327 transitions. [2024-11-13 13:28:11,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-11-13 13:28:11,029 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:28:11,029 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 61, 61, 10, 9, 9, 9, 9, 9, 1, 1, 1] [2024-11-13 13:28:11,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-13 13:28:11,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-13 13:28:11,233 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:28:11,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:28:11,234 INFO L85 PathProgramCache]: Analyzing trace with hash 54106336, now seen corresponding path program 7 times [2024-11-13 13:28:11,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:28:11,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435692733] [2024-11-13 13:28:11,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:28:11,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:28:11,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:28:12,609 INFO L134 CoverageAnalysis]: Checked inductivity of 8286 backedges. 5430 proven. 348 refuted. 0 times theorem prover too weak. 2508 trivial. 0 not checked. [2024-11-13 13:28:12,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:28:12,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435692733] [2024-11-13 13:28:12,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435692733] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:28:12,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6635261] [2024-11-13 13:28:12,610 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 13:28:12,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:28:12,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:28:12,614 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:28:12,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 13:28:13,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:28:13,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 1129 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 13:28:13,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:28:13,618 INFO L134 CoverageAnalysis]: Checked inductivity of 8286 backedges. 5556 proven. 922 refuted. 0 times theorem prover too weak. 1808 trivial. 0 not checked. [2024-11-13 13:28:13,618 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:28:14,063 INFO L134 CoverageAnalysis]: Checked inductivity of 8286 backedges. 5556 proven. 922 refuted. 0 times theorem prover too weak. 1808 trivial. 0 not checked. [2024-11-13 13:28:14,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6635261] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:28:14,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:28:14,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 17] total 34 [2024-11-13 13:28:14,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135195117] [2024-11-13 13:28:14,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:28:14,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-13 13:28:14,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:28:14,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-13 13:28:14,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 13:28:14,067 INFO L87 Difference]: Start difference. First operand 317 states and 327 transitions. Second operand has 34 states, 34 states have (on average 5.264705882352941) internal successors, (179), 34 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:16,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:28:16,071 INFO L93 Difference]: Finished difference Result 317 states and 323 transitions. [2024-11-13 13:28:16,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-13 13:28:16,072 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.264705882352941) internal successors, (179), 34 states have internal predecessors, (179), 0 states have call successors, (0), 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 304 [2024-11-13 13:28:16,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:28:16,073 INFO L225 Difference]: With dead ends: 317 [2024-11-13 13:28:16,074 INFO L226 Difference]: Without dead ends: 317 [2024-11-13 13:28:16,076 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 581 SyntacticMatches, 13 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1823 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1127, Invalid=4879, Unknown=0, NotChecked=0, Total=6006 [2024-11-13 13:28:16,077 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 61 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1666 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:28:16,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 55 Invalid, 1674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1666 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 13:28:16,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2024-11-13 13:28:16,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2024-11-13 13:28:16,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 316 states have (on average 1.0221518987341771) internal successors, (323), 316 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:16,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 323 transitions. [2024-11-13 13:28:16,087 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 323 transitions. Word has length 304 [2024-11-13 13:28:16,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:28:16,088 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 323 transitions. [2024-11-13 13:28:16,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.264705882352941) internal successors, (179), 34 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:16,088 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 323 transitions. [2024-11-13 13:28:16,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2024-11-13 13:28:16,093 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:28:16,093 INFO L215 NwaCegarLoop]: trace histogram [64, 64, 63, 63, 10, 9, 9, 9, 9, 9, 1, 1, 1] [2024-11-13 13:28:16,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-13 13:28:16,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:28:16,294 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:28:16,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:28:16,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1654660502, now seen corresponding path program 8 times [2024-11-13 13:28:16,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:28:16,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240836525] [2024-11-13 13:28:16,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:28:16,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:28:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:28:17,406 INFO L134 CoverageAnalysis]: Checked inductivity of 8802 backedges. 5901 proven. 1684 refuted. 0 times theorem prover too weak. 1217 trivial. 0 not checked. [2024-11-13 13:28:17,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:28:17,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240836525] [2024-11-13 13:28:17,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240836525] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:28:17,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527118744] [2024-11-13 13:28:17,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:28:17,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:28:17,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:28:17,410 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:28:17,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 13:28:17,835 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:28:17,835 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:28:17,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 13:28:17,850 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:28:18,414 INFO L134 CoverageAnalysis]: Checked inductivity of 8802 backedges. 6247 proven. 1338 refuted. 0 times theorem prover too weak. 1217 trivial. 0 not checked. [2024-11-13 13:28:18,414 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:28:18,816 INFO L134 CoverageAnalysis]: Checked inductivity of 8802 backedges. 6247 proven. 1338 refuted. 0 times theorem prover too weak. 1217 trivial. 0 not checked. [2024-11-13 13:28:18,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527118744] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:28:18,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:28:18,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 30 [2024-11-13 13:28:18,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362930289] [2024-11-13 13:28:18,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:28:18,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-13 13:28:18,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:28:18,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-13 13:28:18,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=649, Unknown=0, NotChecked=0, Total=870 [2024-11-13 13:28:18,819 INFO L87 Difference]: Start difference. First operand 317 states and 323 transitions. Second operand has 30 states, 30 states have (on average 5.566666666666666) internal successors, (167), 30 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:20,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:28:20,016 INFO L93 Difference]: Finished difference Result 317 states and 320 transitions. [2024-11-13 13:28:20,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-13 13:28:20,017 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.566666666666666) internal successors, (167), 30 states have internal predecessors, (167), 0 states have call successors, (0), 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 312 [2024-11-13 13:28:20,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:28:20,018 INFO L225 Difference]: With dead ends: 317 [2024-11-13 13:28:20,018 INFO L226 Difference]: Without dead ends: 317 [2024-11-13 13:28:20,020 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 598 SyntacticMatches, 15 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1699 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1446, Invalid=4104, Unknown=0, NotChecked=0, Total=5550 [2024-11-13 13:28:20,021 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 56 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:28:20,021 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 116 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 13:28:20,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2024-11-13 13:28:20,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2024-11-13 13:28:20,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 316 states have (on average 1.0126582278481013) internal successors, (320), 316 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:20,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 320 transitions. [2024-11-13 13:28:20,028 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 320 transitions. Word has length 312 [2024-11-13 13:28:20,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:28:20,028 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 320 transitions. [2024-11-13 13:28:20,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.566666666666666) internal successors, (167), 30 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:20,029 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 320 transitions. [2024-11-13 13:28:20,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2024-11-13 13:28:20,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:28:20,031 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 64, 64, 10, 9, 9, 9, 9, 9, 1, 1, 1] [2024-11-13 13:28:20,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-13 13:28:20,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-13 13:28:20,235 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:28:20,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:28:20,235 INFO L85 PathProgramCache]: Analyzing trace with hash -594789103, now seen corresponding path program 9 times [2024-11-13 13:28:20,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:28:20,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201447295] [2024-11-13 13:28:20,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:28:20,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:28:20,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:28:21,646 INFO L134 CoverageAnalysis]: Checked inductivity of 9066 backedges. 0 proven. 2631 refuted. 0 times theorem prover too weak. 6435 trivial. 0 not checked. [2024-11-13 13:28:21,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:28:21,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201447295] [2024-11-13 13:28:21,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201447295] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:28:21,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57264312] [2024-11-13 13:28:21,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:28:21,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:28:21,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:28:21,649 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:28:21,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 13:28:21,986 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-13 13:28:21,986 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:28:21,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 13:28:21,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:28:22,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-13 13:28:23,594 INFO L134 CoverageAnalysis]: Checked inductivity of 9066 backedges. 0 proven. 2631 refuted. 0 times theorem prover too weak. 6435 trivial. 0 not checked. [2024-11-13 13:28:23,594 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:28:25,553 INFO L134 CoverageAnalysis]: Checked inductivity of 9066 backedges. 0 proven. 2631 refuted. 0 times theorem prover too weak. 6435 trivial. 0 not checked. [2024-11-13 13:28:25,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57264312] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:28:25,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:28:25,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 39 [2024-11-13 13:28:25,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617516753] [2024-11-13 13:28:25,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:28:25,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-13 13:28:25,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:28:25,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-13 13:28:25,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=1121, Unknown=0, NotChecked=0, Total=1560 [2024-11-13 13:28:25,557 INFO L87 Difference]: Start difference. First operand 317 states and 320 transitions. Second operand has 40 states, 39 states have (on average 4.256410256410256) internal successors, (166), 40 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:26,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:28:26,758 INFO L93 Difference]: Finished difference Result 377 states and 392 transitions. [2024-11-13 13:28:26,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-13 13:28:26,758 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 4.256410256410256) internal successors, (166), 40 states have internal predecessors, (166), 0 states have call successors, (0), 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 316 [2024-11-13 13:28:26,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:28:26,760 INFO L225 Difference]: With dead ends: 377 [2024-11-13 13:28:26,760 INFO L226 Difference]: Without dead ends: 377 [2024-11-13 13:28:26,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 605 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1019, Invalid=2763, Unknown=0, NotChecked=0, Total=3782 [2024-11-13 13:28:26,762 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 145 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:28:26,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 19 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 13:28:26,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-11-13 13:28:26,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 365. [2024-11-13 13:28:26,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.043956043956044) internal successors, (380), 364 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:26,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 380 transitions. [2024-11-13 13:28:26,778 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 380 transitions. Word has length 316 [2024-11-13 13:28:26,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:28:26,780 INFO L471 AbstractCegarLoop]: Abstraction has 365 states and 380 transitions. [2024-11-13 13:28:26,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 4.256410256410256) internal successors, (166), 40 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:26,780 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 380 transitions. [2024-11-13 13:28:26,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2024-11-13 13:28:26,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:28:26,783 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 76, 76, 10, 9, 9, 9, 9, 9, 1, 1, 1] [2024-11-13 13:28:26,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-13 13:28:26,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-13 13:28:26,987 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:28:26,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:28:26,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1993878485, now seen corresponding path program 10 times [2024-11-13 13:28:26,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:28:26,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223337273] [2024-11-13 13:28:26,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:28:26,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:28:27,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:28:29,186 INFO L134 CoverageAnalysis]: Checked inductivity of 12546 backedges. 1013 proven. 10819 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2024-11-13 13:28:29,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:28:29,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223337273] [2024-11-13 13:28:29,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223337273] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:28:29,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592530562] [2024-11-13 13:28:29,187 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 13:28:29,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:28:29,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:28:29,190 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:28:29,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 13:28:30,186 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 13:28:30,186 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:28:30,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 1324 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-13 13:28:30,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:28:31,550 INFO L134 CoverageAnalysis]: Checked inductivity of 12546 backedges. 1098 proven. 10734 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2024-11-13 13:28:31,551 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:28:32,850 INFO L134 CoverageAnalysis]: Checked inductivity of 12546 backedges. 1098 proven. 10734 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2024-11-13 13:28:32,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592530562] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:28:32,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:28:32,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 81 [2024-11-13 13:28:32,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859923981] [2024-11-13 13:28:32,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:28:32,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-11-13 13:28:32,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:28:32,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-11-13 13:28:32,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1725, Invalid=4755, Unknown=0, NotChecked=0, Total=6480 [2024-11-13 13:28:32,855 INFO L87 Difference]: Start difference. First operand 365 states and 380 transitions. Second operand has 81 states, 81 states have (on average 5.2592592592592595) internal successors, (426), 81 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:41,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:28:41,701 INFO L93 Difference]: Finished difference Result 1735 states and 1849 transitions. [2024-11-13 13:28:41,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 282 states. [2024-11-13 13:28:41,701 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 5.2592592592592595) internal successors, (426), 81 states have internal predecessors, (426), 0 states have call successors, (0), 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 364 [2024-11-13 13:28:41,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:28:41,707 INFO L225 Difference]: With dead ends: 1735 [2024-11-13 13:28:41,707 INFO L226 Difference]: Without dead ends: 1735 [2024-11-13 13:28:41,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1021 GetRequests, 671 SyntacticMatches, 11 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61991 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=31698, Invalid=84242, Unknown=0, NotChecked=0, Total=115940 [2024-11-13 13:28:41,719 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 22 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1910 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 1953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:28:41,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 72 Invalid, 1953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1910 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-13 13:28:41,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2024-11-13 13:28:41,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1637. [2024-11-13 13:28:41,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1637 states, 1636 states have (on average 1.069682151589242) internal successors, (1750), 1636 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:41,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1637 states to 1637 states and 1750 transitions. [2024-11-13 13:28:41,764 INFO L78 Accepts]: Start accepts. Automaton has 1637 states and 1750 transitions. Word has length 364 [2024-11-13 13:28:41,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:28:41,765 INFO L471 AbstractCegarLoop]: Abstraction has 1637 states and 1750 transitions. [2024-11-13 13:28:41,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 5.2592592592592595) internal successors, (426), 81 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:41,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1637 states and 1750 transitions. [2024-11-13 13:28:41,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 827 [2024-11-13 13:28:41,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:28:41,775 INFO L215 NwaCegarLoop]: trace histogram [176, 176, 175, 175, 21, 20, 20, 20, 20, 20, 1, 1, 1] [2024-11-13 13:28:41,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-13 13:28:41,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:28:41,976 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:28:41,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:28:41,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1437555391, now seen corresponding path program 11 times [2024-11-13 13:28:41,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:28:41,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309738430] [2024-11-13 13:28:41,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:28:41,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:28:42,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:28:45,311 INFO L134 CoverageAnalysis]: Checked inductivity of 66105 backedges. 29471 proven. 558 refuted. 0 times theorem prover too weak. 36076 trivial. 0 not checked. [2024-11-13 13:28:45,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:28:45,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309738430] [2024-11-13 13:28:45,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309738430] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:28:45,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616996692] [2024-11-13 13:28:45,312 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 13:28:45,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:28:45,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:28:45,315 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:28:45,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-13 13:28:46,373 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-11-13 13:28:46,373 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:28:46,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-13 13:28:46,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:28:46,991 INFO L134 CoverageAnalysis]: Checked inductivity of 66105 backedges. 31190 proven. 529 refuted. 0 times theorem prover too weak. 34386 trivial. 0 not checked. [2024-11-13 13:28:46,992 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:28:47,465 INFO L134 CoverageAnalysis]: Checked inductivity of 66105 backedges. 31223 proven. 496 refuted. 0 times theorem prover too weak. 34386 trivial. 0 not checked. [2024-11-13 13:28:47,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616996692] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:28:47,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:28:47,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 52 [2024-11-13 13:28:47,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635606825] [2024-11-13 13:28:47,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:28:47,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-13 13:28:47,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:28:47,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-13 13:28:47,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=512, Invalid=2140, Unknown=0, NotChecked=0, Total=2652 [2024-11-13 13:28:47,468 INFO L87 Difference]: Start difference. First operand 1637 states and 1750 transitions. Second operand has 52 states, 52 states have (on average 4.115384615384615) internal successors, (214), 52 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:48,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:28:48,489 INFO L93 Difference]: Finished difference Result 1175 states and 1264 transitions. [2024-11-13 13:28:48,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-13 13:28:48,490 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 4.115384615384615) internal successors, (214), 52 states have internal predecessors, (214), 0 states have call successors, (0), 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 826 [2024-11-13 13:28:48,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:28:48,494 INFO L225 Difference]: With dead ends: 1175 [2024-11-13 13:28:48,494 INFO L226 Difference]: Without dead ends: 1175 [2024-11-13 13:28:48,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1695 GetRequests, 1613 SyntacticMatches, 10 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1860 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1189, Invalid=4213, Unknown=0, NotChecked=0, Total=5402 [2024-11-13 13:28:48,496 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 62 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 13:28:48,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 55 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 13:28:48,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2024-11-13 13:28:48,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1175. [2024-11-13 13:28:48,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 1174 states have (on average 1.0766609880749574) internal successors, (1264), 1174 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:48,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1264 transitions. [2024-11-13 13:28:48,521 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1264 transitions. Word has length 826 [2024-11-13 13:28:48,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:28:48,522 INFO L471 AbstractCegarLoop]: Abstraction has 1175 states and 1264 transitions. [2024-11-13 13:28:48,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 4.115384615384615) internal successors, (214), 52 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:48,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1264 transitions. [2024-11-13 13:28:48,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 871 [2024-11-13 13:28:48,531 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:28:48,531 INFO L215 NwaCegarLoop]: trace histogram [187, 187, 186, 186, 21, 20, 20, 20, 20, 20, 1, 1, 1] [2024-11-13 13:28:48,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-13 13:28:48,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:28:48,735 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:28:48,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:28:48,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1886646840, now seen corresponding path program 12 times [2024-11-13 13:28:48,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:28:48,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115940721] [2024-11-13 13:28:48,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:28:48,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:28:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:28:51,929 INFO L134 CoverageAnalysis]: Checked inductivity of 74278 backedges. 27895 proven. 681 refuted. 0 times theorem prover too weak. 45702 trivial. 0 not checked. [2024-11-13 13:28:51,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:28:51,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115940721] [2024-11-13 13:28:51,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115940721] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:28:51,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420462134] [2024-11-13 13:28:51,931 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 13:28:51,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:28:51,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:28:51,935 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:28:51,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-13 13:28:54,836 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-11-13 13:28:54,836 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:28:54,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 1381 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 13:28:54,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:28:54,876 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 [2024-11-13 13:28:59,139 INFO L134 CoverageAnalysis]: Checked inductivity of 74278 backedges. 6662 proven. 15618 refuted. 0 times theorem prover too weak. 51998 trivial. 0 not checked. [2024-11-13 13:28:59,139 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:29:04,303 INFO L134 CoverageAnalysis]: Checked inductivity of 74278 backedges. 0 proven. 22280 refuted. 0 times theorem prover too weak. 51998 trivial. 0 not checked. [2024-11-13 13:29:04,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420462134] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:29:04,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:29:04,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 19, 19] total 62 [2024-11-13 13:29:04,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6656741] [2024-11-13 13:29:04,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:29:04,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-13 13:29:04,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:29:04,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-13 13:29:04,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=590, Invalid=3192, Unknown=0, NotChecked=0, Total=3782 [2024-11-13 13:29:04,307 INFO L87 Difference]: Start difference. First operand 1175 states and 1264 transitions. Second operand has 62 states, 62 states have (on average 3.935483870967742) internal successors, (244), 62 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:14,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:29:14,818 INFO L93 Difference]: Finished difference Result 1275 states and 1364 transitions. [2024-11-13 13:29:14,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2024-11-13 13:29:14,819 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 3.935483870967742) internal successors, (244), 62 states have internal predecessors, (244), 0 states have call successors, (0), 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 870 [2024-11-13 13:29:14,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:29:14,821 INFO L225 Difference]: With dead ends: 1275 [2024-11-13 13:29:14,821 INFO L226 Difference]: Without dead ends: 1275 [2024-11-13 13:29:14,823 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1919 GetRequests, 1704 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14680 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=7605, Invalid=39267, Unknown=0, NotChecked=0, Total=46872 [2024-11-13 13:29:14,823 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 1094 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1714 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 1887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:29:14,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1094 Valid, 36 Invalid, 1887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1714 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 13:29:14,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2024-11-13 13:29:14,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1269. [2024-11-13 13:29:14,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 1268 states have (on average 1.0709779179810726) internal successors, (1358), 1268 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:14,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1358 transitions. [2024-11-13 13:29:14,846 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1358 transitions. Word has length 870 [2024-11-13 13:29:14,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:29:14,847 INFO L471 AbstractCegarLoop]: Abstraction has 1269 states and 1358 transitions. [2024-11-13 13:29:14,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 3.935483870967742) internal successors, (244), 62 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:14,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1358 transitions. [2024-11-13 13:29:14,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 959 [2024-11-13 13:29:14,856 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:29:14,856 INFO L215 NwaCegarLoop]: trace histogram [209, 209, 208, 208, 21, 20, 20, 20, 20, 20, 1, 1, 1] [2024-11-13 13:29:14,884 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-13 13:29:15,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-13 13:29:15,058 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:29:15,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:29:15,059 INFO L85 PathProgramCache]: Analyzing trace with hash 781329178, now seen corresponding path program 13 times [2024-11-13 13:29:15,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:29:15,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964254733] [2024-11-13 13:29:15,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:15,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:29:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:18,478 INFO L134 CoverageAnalysis]: Checked inductivity of 92076 backedges. 44003 proven. 816 refuted. 0 times theorem prover too weak. 47257 trivial. 0 not checked. [2024-11-13 13:29:18,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:29:18,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964254733] [2024-11-13 13:29:18,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964254733] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:29:18,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815614672] [2024-11-13 13:29:18,479 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 13:29:18,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:18,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:29:18,480 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:29:18,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-13 13:29:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:19,389 INFO L255 TraceCheckSpWp]: Trace formula consists of 3392 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-13 13:29:19,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:29:20,317 INFO L134 CoverageAnalysis]: Checked inductivity of 92076 backedges. 51417 proven. 3276 refuted. 0 times theorem prover too weak. 37383 trivial. 0 not checked. [2024-11-13 13:29:20,317 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:29:21,159 INFO L134 CoverageAnalysis]: Checked inductivity of 92076 backedges. 51417 proven. 3276 refuted. 0 times theorem prover too weak. 37383 trivial. 0 not checked. [2024-11-13 13:29:21,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815614672] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:29:21,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:29:21,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25, 25] total 50 [2024-11-13 13:29:21,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890060874] [2024-11-13 13:29:21,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:29:21,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-13 13:29:21,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:29:21,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-13 13:29:21,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=441, Invalid=2009, Unknown=0, NotChecked=0, Total=2450 [2024-11-13 13:29:21,166 INFO L87 Difference]: Start difference. First operand 1269 states and 1358 transitions. Second operand has 50 states, 50 states have (on average 5.34) internal successors, (267), 50 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:26,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:29:26,385 INFO L93 Difference]: Finished difference Result 1269 states and 1346 transitions. [2024-11-13 13:29:26,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2024-11-13 13:29:26,385 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 5.34) internal successors, (267), 50 states have internal predecessors, (267), 0 states have call successors, (0), 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 958 [2024-11-13 13:29:26,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:29:26,389 INFO L225 Difference]: With dead ends: 1269 [2024-11-13 13:29:26,389 INFO L226 Difference]: Without dead ends: 1269 [2024-11-13 13:29:26,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2032 GetRequests, 1873 SyntacticMatches, 21 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6065 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=3438, Invalid=16022, Unknown=0, NotChecked=0, Total=19460 [2024-11-13 13:29:26,392 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 79 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 5282 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 5295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 5282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-13 13:29:26,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 98 Invalid, 5295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 5282 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-13 13:29:26,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2024-11-13 13:29:26,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1269. [2024-11-13 13:29:26,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 1268 states have (on average 1.0615141955835963) internal successors, (1346), 1268 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:26,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1346 transitions. [2024-11-13 13:29:26,425 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1346 transitions. Word has length 958 [2024-11-13 13:29:26,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:29:26,426 INFO L471 AbstractCegarLoop]: Abstraction has 1269 states and 1346 transitions. [2024-11-13 13:29:26,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 5.34) internal successors, (267), 50 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:26,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1346 transitions. [2024-11-13 13:29:26,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 995 [2024-11-13 13:29:26,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:29:26,449 INFO L215 NwaCegarLoop]: trace histogram [218, 218, 217, 217, 21, 20, 20, 20, 20, 20, 1, 1, 1] [2024-11-13 13:29:26,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-13 13:29:26,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-13 13:29:26,651 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:29:26,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:29:26,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1614398317, now seen corresponding path program 14 times [2024-11-13 13:29:26,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:29:26,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588859820] [2024-11-13 13:29:26,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:26,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:29:27,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:31,392 INFO L134 CoverageAnalysis]: Checked inductivity of 99915 backedges. 47516 proven. 963 refuted. 0 times theorem prover too weak. 51436 trivial. 0 not checked. [2024-11-13 13:29:31,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:29:31,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588859820] [2024-11-13 13:29:31,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588859820] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:29:31,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882668725] [2024-11-13 13:29:31,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:29:31,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:31,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:29:31,398 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:29:31,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-13 13:29:32,537 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:29:32,537 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:29:32,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 3509 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-13 13:29:32,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:29:33,811 INFO L134 CoverageAnalysis]: Checked inductivity of 99915 backedges. 60366 proven. 4192 refuted. 0 times theorem prover too weak. 35357 trivial. 0 not checked. [2024-11-13 13:29:33,811 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:29:34,761 INFO L134 CoverageAnalysis]: Checked inductivity of 99915 backedges. 60366 proven. 4192 refuted. 0 times theorem prover too weak. 35357 trivial. 0 not checked. [2024-11-13 13:29:34,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882668725] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:29:34,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:29:34,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 27, 27] total 54 [2024-11-13 13:29:34,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759655274] [2024-11-13 13:29:34,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:29:34,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-13 13:29:34,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:29:34,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-13 13:29:34,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=510, Invalid=2352, Unknown=0, NotChecked=0, Total=2862 [2024-11-13 13:29:34,764 INFO L87 Difference]: Start difference. First operand 1269 states and 1346 transitions. Second operand has 54 states, 54 states have (on average 5.351851851851852) internal successors, (289), 54 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) [2024-11-13 13:29:40,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:29:40,665 INFO L93 Difference]: Finished difference Result 1269 states and 1335 transitions. [2024-11-13 13:29:40,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2024-11-13 13:29:40,665 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.351851851851852) internal successors, (289), 54 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) Word has length 994 [2024-11-13 13:29:40,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:29:40,669 INFO L225 Difference]: With dead ends: 1269 [2024-11-13 13:29:40,669 INFO L226 Difference]: Without dead ends: 1269 [2024-11-13 13:29:40,670 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2120 GetRequests, 1941 SyntacticMatches, 23 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7738 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=4347, Invalid=20459, Unknown=0, NotChecked=0, Total=24806 [2024-11-13 13:29:40,671 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 85 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 4717 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 4730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 4717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:29:40,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 111 Invalid, 4730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 4717 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-13 13:29:40,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2024-11-13 13:29:40,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1269. [2024-11-13 13:29:40,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 1268 states have (on average 1.0528391167192428) internal successors, (1335), 1268 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:40,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1335 transitions. [2024-11-13 13:29:40,694 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1335 transitions. Word has length 994 [2024-11-13 13:29:40,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:29:40,696 INFO L471 AbstractCegarLoop]: Abstraction has 1269 states and 1335 transitions. [2024-11-13 13:29:40,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.351851851851852) internal successors, (289), 54 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) [2024-11-13 13:29:40,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1335 transitions. [2024-11-13 13:29:40,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1027 [2024-11-13 13:29:40,707 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:29:40,707 INFO L215 NwaCegarLoop]: trace histogram [226, 226, 225, 225, 21, 20, 20, 20, 20, 20, 1, 1, 1] [2024-11-13 13:29:40,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-13 13:29:40,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-13 13:29:40,908 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:29:40,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:29:40,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1322966085, now seen corresponding path program 15 times [2024-11-13 13:29:40,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:29:40,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425503428] [2024-11-13 13:29:40,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:40,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:29:41,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:45,080 INFO L134 CoverageAnalysis]: Checked inductivity of 107155 backedges. 50859 proven. 1122 refuted. 0 times theorem prover too weak. 55174 trivial. 0 not checked. [2024-11-13 13:29:45,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:29:45,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425503428] [2024-11-13 13:29:45,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425503428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:29:45,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277664738] [2024-11-13 13:29:45,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:29:45,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:45,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:29:45,082 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:29:45,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-13 13:29:47,050 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-11-13 13:29:47,050 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:29:47,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 1416 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-13 13:29:47,074 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:29:47,091 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 [2024-11-13 13:29:52,810 INFO L134 CoverageAnalysis]: Checked inductivity of 107155 backedges. 0 proven. 19923 refuted. 0 times theorem prover too weak. 87232 trivial. 0 not checked. [2024-11-13 13:29:52,810 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:29:58,891 INFO L134 CoverageAnalysis]: Checked inductivity of 107155 backedges. 0 proven. 19923 refuted. 0 times theorem prover too weak. 87232 trivial. 0 not checked. [2024-11-13 13:29:58,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277664738] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:29:58,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:29:58,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 26, 26] total 81 [2024-11-13 13:29:58,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589320576] [2024-11-13 13:29:58,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:29:58,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-11-13 13:29:58,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:29:58,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-11-13 13:29:58,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1211, Invalid=5269, Unknown=0, NotChecked=0, Total=6480 [2024-11-13 13:29:58,895 INFO L87 Difference]: Start difference. First operand 1269 states and 1335 transitions. Second operand has 81 states, 81 states have (on average 4.209876543209877) internal successors, (341), 81 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:05,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:05,758 INFO L93 Difference]: Finished difference Result 1463 states and 1539 transitions. [2024-11-13 13:30:05,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2024-11-13 13:30:05,759 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 4.209876543209877) internal successors, (341), 81 states have internal predecessors, (341), 0 states have call successors, (0), 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 1026 [2024-11-13 13:30:05,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:05,763 INFO L225 Difference]: With dead ends: 1463 [2024-11-13 13:30:05,763 INFO L226 Difference]: Without dead ends: 1463 [2024-11-13 13:30:05,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2198 GetRequests, 2003 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10230 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=7652, Invalid=30960, Unknown=0, NotChecked=0, Total=38612 [2024-11-13 13:30:05,766 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 538 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1621 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:05,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 39 Invalid, 1684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1621 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 13:30:05,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2024-11-13 13:30:05,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1367. [2024-11-13 13:30:05,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1367 states, 1366 states have (on average 1.0490483162518303) internal successors, (1433), 1366 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:05,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 1433 transitions. [2024-11-13 13:30:05,784 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 1433 transitions. Word has length 1026 [2024-11-13 13:30:05,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:05,785 INFO L471 AbstractCegarLoop]: Abstraction has 1367 states and 1433 transitions. [2024-11-13 13:30:05,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 4.209876543209877) internal successors, (341), 81 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:05,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 1433 transitions. [2024-11-13 13:30:05,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1095 [2024-11-13 13:30:05,795 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:05,796 INFO L215 NwaCegarLoop]: trace histogram [243, 243, 242, 242, 21, 20, 20, 20, 20, 20, 1, 1, 1] [2024-11-13 13:30:05,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-13 13:30:05,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-13 13:30:05,997 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:30:05,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:05,998 INFO L85 PathProgramCache]: Analyzing trace with hash -2072627920, now seen corresponding path program 16 times [2024-11-13 13:30:05,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:05,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439052332] [2024-11-13 13:30:05,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:05,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:06,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:12,168 INFO L134 CoverageAnalysis]: Checked inductivity of 123390 backedges. 61726 proven. 1285 refuted. 0 times theorem prover too weak. 60379 trivial. 0 not checked. [2024-11-13 13:30:12,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:12,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439052332] [2024-11-13 13:30:12,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439052332] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:30:12,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227390762] [2024-11-13 13:30:12,169 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 13:30:12,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:12,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:12,172 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:30:12,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-13 13:30:19,936 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 13:30:19,937 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:30:19,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 3834 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-13 13:30:19,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:30:21,671 INFO L134 CoverageAnalysis]: Checked inductivity of 123390 backedges. 88824 proven. 7314 refuted. 0 times theorem prover too weak. 27252 trivial. 0 not checked. [2024-11-13 13:30:21,672 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:30:23,395 INFO L134 CoverageAnalysis]: Checked inductivity of 123390 backedges. 88824 proven. 7314 refuted. 0 times theorem prover too weak. 27252 trivial. 0 not checked. [2024-11-13 13:30:23,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227390762] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:30:23,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:30:23,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 32, 32] total 78 [2024-11-13 13:30:23,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679143248] [2024-11-13 13:30:23,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:30:23,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-11-13 13:30:23,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:23,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-11-13 13:30:23,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=951, Invalid=5055, Unknown=0, NotChecked=0, Total=6006 [2024-11-13 13:30:23,399 INFO L87 Difference]: Start difference. First operand 1367 states and 1433 transitions. Second operand has 78 states, 78 states have (on average 5.217948717948718) internal successors, (407), 78 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:34,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:34,043 INFO L93 Difference]: Finished difference Result 1507 states and 1556 transitions. [2024-11-13 13:30:34,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2024-11-13 13:30:34,044 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 5.217948717948718) internal successors, (407), 78 states have internal predecessors, (407), 0 states have call successors, (0), 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 1094 [2024-11-13 13:30:34,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:34,048 INFO L225 Difference]: With dead ends: 1507 [2024-11-13 13:30:34,049 INFO L226 Difference]: Without dead ends: 1507 [2024-11-13 13:30:34,050 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2370 GetRequests, 2130 SyntacticMatches, 14 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13575 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=9207, Invalid=42549, Unknown=0, NotChecked=0, Total=51756 [2024-11-13 13:30:34,050 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 97 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 9373 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 9395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 9373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:34,051 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 124 Invalid, 9395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 9373 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-13 13:30:34,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2024-11-13 13:30:34,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1499. [2024-11-13 13:30:34,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1499 states, 1498 states have (on average 1.0333778371161548) internal successors, (1548), 1498 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:34,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 1548 transitions. [2024-11-13 13:30:34,070 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 1548 transitions. Word has length 1094 [2024-11-13 13:30:34,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:34,071 INFO L471 AbstractCegarLoop]: Abstraction has 1499 states and 1548 transitions. [2024-11-13 13:30:34,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 5.217948717948718) internal successors, (407), 78 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:34,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 1548 transitions. [2024-11-13 13:30:34,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1139 [2024-11-13 13:30:34,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:34,085 INFO L215 NwaCegarLoop]: trace histogram [254, 254, 253, 253, 21, 20, 20, 20, 20, 20, 1, 1, 1] [2024-11-13 13:30:34,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-13 13:30:34,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-13 13:30:34,286 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:30:34,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:34,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1512434375, now seen corresponding path program 17 times [2024-11-13 13:30:34,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:34,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148837949] [2024-11-13 13:30:34,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:34,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:39,521 INFO L134 CoverageAnalysis]: Checked inductivity of 134511 backedges. 67778 proven. 1671 refuted. 0 times theorem prover too weak. 65062 trivial. 0 not checked. [2024-11-13 13:30:39,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:39,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148837949] [2024-11-13 13:30:39,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148837949] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:30:39,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112833537] [2024-11-13 13:30:39,522 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 13:30:39,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:39,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:39,523 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:30:39,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-13 13:31:06,514 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-11-13 13:31:06,514 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:31:06,540 INFO L255 TraceCheckSpWp]: Trace formula consists of 3407 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-13 13:31:06,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:31:08,138 INFO L134 CoverageAnalysis]: Checked inductivity of 134511 backedges. 99161 proven. 11019 refuted. 0 times theorem prover too weak. 24331 trivial. 0 not checked. [2024-11-13 13:31:08,139 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:31:09,700 INFO L134 CoverageAnalysis]: Checked inductivity of 134511 backedges. 101290 proven. 8890 refuted. 0 times theorem prover too weak. 24331 trivial. 0 not checked. [2024-11-13 13:31:09,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112833537] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:31:09,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:31:09,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37, 37] total 77 [2024-11-13 13:31:09,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141118756] [2024-11-13 13:31:09,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:31:09,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-11-13 13:31:09,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:31:09,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-11-13 13:31:09,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1050, Invalid=4802, Unknown=0, NotChecked=0, Total=5852 [2024-11-13 13:31:09,703 INFO L87 Difference]: Start difference. First operand 1499 states and 1548 transitions. Second operand has 77 states, 77 states have (on average 4.935064935064935) internal successors, (380), 77 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:19,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:31:19,231 INFO L93 Difference]: Finished difference Result 1643 states and 1685 transitions. [2024-11-13 13:31:19,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2024-11-13 13:31:19,231 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 4.935064935064935) internal successors, (380), 77 states have internal predecessors, (380), 0 states have call successors, (0), 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 1138 [2024-11-13 13:31:19,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:31:19,234 INFO L225 Difference]: With dead ends: 1643 [2024-11-13 13:31:19,234 INFO L226 Difference]: Without dead ends: 1643 [2024-11-13 13:31:19,237 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2470 GetRequests, 2209 SyntacticMatches, 28 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17251 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=9908, Invalid=45082, Unknown=0, NotChecked=0, Total=54990 [2024-11-13 13:31:19,237 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 106 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 8541 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 8558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 8541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-13 13:31:19,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 124 Invalid, 8558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 8541 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-13 13:31:19,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2024-11-13 13:31:19,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 1565. [2024-11-13 13:31:19,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1565 states, 1564 states have (on average 1.0274936061381075) internal successors, (1607), 1564 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:19,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 1607 transitions. [2024-11-13 13:31:19,257 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 1607 transitions. Word has length 1138 [2024-11-13 13:31:19,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:31:19,258 INFO L471 AbstractCegarLoop]: Abstraction has 1565 states and 1607 transitions. [2024-11-13 13:31:19,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 4.935064935064935) internal successors, (380), 77 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:19,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 1607 transitions. [2024-11-13 13:31:19,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1155 [2024-11-13 13:31:19,270 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:31:19,270 INFO L215 NwaCegarLoop]: trace histogram [258, 258, 257, 257, 21, 20, 20, 20, 20, 20, 1, 1, 1] [2024-11-13 13:31:19,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-13 13:31:19,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-13 13:31:19,471 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:31:19,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:31:19,471 INFO L85 PathProgramCache]: Analyzing trace with hash 663554981, now seen corresponding path program 18 times [2024-11-13 13:31:19,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:31:19,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097543359] [2024-11-13 13:31:19,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:31:19,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:31:19,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:31:24,727 INFO L134 CoverageAnalysis]: Checked inductivity of 138675 backedges. 70361 proven. 1878 refuted. 0 times theorem prover too weak. 66436 trivial. 0 not checked. [2024-11-13 13:31:24,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:31:24,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097543359] [2024-11-13 13:31:24,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097543359] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:31:24,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695451369] [2024-11-13 13:31:24,727 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 13:31:24,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:31:24,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:31:24,729 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:31:24,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-13 13:31:41,617 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 51 check-sat command(s) [2024-11-13 13:31:41,617 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:31:41,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 3135 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-13 13:31:41,656 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:31:41,662 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 [2024-11-13 13:31:47,825 INFO L134 CoverageAnalysis]: Checked inductivity of 138675 backedges. 18663 proven. 31145 refuted. 0 times theorem prover too weak. 88867 trivial. 0 not checked. [2024-11-13 13:31:47,825 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:31:55,262 INFO L134 CoverageAnalysis]: Checked inductivity of 138675 backedges. 0 proven. 49808 refuted. 0 times theorem prover too weak. 88867 trivial. 0 not checked. [2024-11-13 13:31:55,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695451369] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:31:55,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:31:55,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 31, 31] total 99 [2024-11-13 13:31:55,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317332945] [2024-11-13 13:31:55,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:31:55,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2024-11-13 13:31:55,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:31:55,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2024-11-13 13:31:55,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1723, Invalid=7979, Unknown=0, NotChecked=0, Total=9702 [2024-11-13 13:31:55,266 INFO L87 Difference]: Start difference. First operand 1565 states and 1607 transitions. Second operand has 99 states, 99 states have (on average 4.01010101010101) internal successors, (397), 99 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:15,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:15,521 INFO L93 Difference]: Finished difference Result 2068 states and 2150 transitions. [2024-11-13 13:32:15,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 247 states. [2024-11-13 13:32:15,522 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 4.01010101010101) internal successors, (397), 99 states have internal predecessors, (397), 0 states have call successors, (0), 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 1154 [2024-11-13 13:32:15,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:15,527 INFO L225 Difference]: With dead ends: 2068 [2024-11-13 13:32:15,527 INFO L226 Difference]: Without dead ends: 2068 [2024-11-13 13:32:15,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2589 GetRequests, 2249 SyntacticMatches, 0 SemanticMatches, 340 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36853 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=18469, Invalid=98153, Unknown=0, NotChecked=0, Total=116622 [2024-11-13 13:32:15,535 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 1649 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 2944 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1649 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 3191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 2944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:15,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1649 Valid, 33 Invalid, 3191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 2944 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-13 13:32:15,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2068 states. [2024-11-13 13:32:15,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2068 to 1875. [2024-11-13 13:32:15,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1875 states, 1874 states have (on average 1.0314834578441836) internal successors, (1933), 1874 states have internal predecessors, (1933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:15,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 1933 transitions. [2024-11-13 13:32:15,556 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 1933 transitions. Word has length 1154 [2024-11-13 13:32:15,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:15,557 INFO L471 AbstractCegarLoop]: Abstraction has 1875 states and 1933 transitions. [2024-11-13 13:32:15,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 4.01010101010101) internal successors, (397), 99 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:15,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 1933 transitions. [2024-11-13 13:32:15,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1481 [2024-11-13 13:32:15,574 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:15,575 INFO L215 NwaCegarLoop]: trace histogram [335, 335, 334, 334, 24, 23, 23, 23, 23, 23, 1, 1, 1] [2024-11-13 13:32:15,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-13 13:32:15,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:15,775 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:32:15,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:15,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1876055077, now seen corresponding path program 19 times [2024-11-13 13:32:15,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:15,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248098901] [2024-11-13 13:32:15,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:15,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:25,230 INFO L134 CoverageAnalysis]: Checked inductivity of 232692 backedges. 131287 proven. 2097 refuted. 0 times theorem prover too weak. 99308 trivial. 0 not checked. [2024-11-13 13:32:25,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:25,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248098901] [2024-11-13 13:32:25,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248098901] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:32:25,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831881038] [2024-11-13 13:32:25,230 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 13:32:25,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:25,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:32:25,232 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:32:25,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-13 13:32:26,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:26,697 INFO L255 TraceCheckSpWp]: Trace formula consists of 5126 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-13 13:32:26,716 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:32:28,762 INFO L134 CoverageAnalysis]: Checked inductivity of 232692 backedges. 171685 proven. 13363 refuted. 0 times theorem prover too weak. 47644 trivial. 0 not checked. [2024-11-13 13:32:28,763 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:32:30,881 INFO L134 CoverageAnalysis]: Checked inductivity of 232692 backedges. 171685 proven. 13363 refuted. 0 times theorem prover too weak. 47644 trivial. 0 not checked. [2024-11-13 13:32:30,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831881038] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:32:30,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:32:30,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 39, 39] total 78 [2024-11-13 13:32:30,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532489624] [2024-11-13 13:32:30,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:32:30,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-11-13 13:32:30,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:30,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-11-13 13:32:30,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1029, Invalid=4977, Unknown=0, NotChecked=0, Total=6006 [2024-11-13 13:32:30,884 INFO L87 Difference]: Start difference. First operand 1875 states and 1933 transitions. Second operand has 78 states, 78 states have (on average 5.397435897435898) internal successors, (421), 78 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) [2024-11-13 13:32:45,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:45,307 INFO L93 Difference]: Finished difference Result 1961 states and 2012 transitions. [2024-11-13 13:32:45,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 229 states. [2024-11-13 13:32:45,307 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 5.397435897435898) internal successors, (421), 78 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) Word has length 1480 [2024-11-13 13:32:45,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:45,310 INFO L225 Difference]: With dead ends: 1961 [2024-11-13 13:32:45,311 INFO L226 Difference]: Without dead ends: 1961 [2024-11-13 13:32:45,313 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3209 GetRequests, 2889 SyntacticMatches, 35 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25539 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=14008, Invalid=68074, Unknown=0, NotChecked=0, Total=82082 [2024-11-13 13:32:45,314 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 115 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 10333 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 10357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 10333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:45,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 133 Invalid, 10357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 10333 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-13 13:32:45,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1961 states. [2024-11-13 13:32:45,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1961 to 1953. [2024-11-13 13:32:45,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1953 states, 1952 states have (on average 1.026639344262295) internal successors, (2004), 1952 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:45,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 2004 transitions. [2024-11-13 13:32:45,337 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 2004 transitions. Word has length 1480 [2024-11-13 13:32:45,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:45,338 INFO L471 AbstractCegarLoop]: Abstraction has 1953 states and 2004 transitions. [2024-11-13 13:32:45,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 5.397435897435898) internal successors, (421), 78 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) [2024-11-13 13:32:45,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 2004 transitions. [2024-11-13 13:32:45,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1493 [2024-11-13 13:32:45,358 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:45,359 INFO L215 NwaCegarLoop]: trace histogram [338, 338, 337, 337, 24, 23, 23, 23, 23, 23, 1, 1, 1] [2024-11-13 13:32:45,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-13 13:32:45,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:45,559 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:32:45,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:45,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1615717078, now seen corresponding path program 20 times [2024-11-13 13:32:45,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:45,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618660678] [2024-11-13 13:32:45,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:45,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:46,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:54,270 INFO L134 CoverageAnalysis]: Checked inductivity of 236790 backedges. 134384 proven. 2328 refuted. 0 times theorem prover too weak. 100078 trivial. 0 not checked. [2024-11-13 13:32:54,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:54,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618660678] [2024-11-13 13:32:54,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618660678] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:32:54,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808180753] [2024-11-13 13:32:54,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:32:54,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:54,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:32:54,272 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:32:54,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-13 13:32:55,663 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:32:55,663 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:32:55,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 5165 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-13 13:32:55,693 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:32:58,148 INFO L134 CoverageAnalysis]: Checked inductivity of 236790 backedges. 182438 proven. 15616 refuted. 0 times theorem prover too weak. 38736 trivial. 0 not checked. [2024-11-13 13:32:58,148 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:33:00,441 INFO L134 CoverageAnalysis]: Checked inductivity of 236790 backedges. 182438 proven. 15616 refuted. 0 times theorem prover too weak. 38736 trivial. 0 not checked. [2024-11-13 13:33:00,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808180753] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:33:00,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:33:00,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 41, 41] total 82 [2024-11-13 13:33:00,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346132473] [2024-11-13 13:33:00,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:33:00,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2024-11-13 13:33:00,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:33:00,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2024-11-13 13:33:00,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1133, Invalid=5509, Unknown=0, NotChecked=0, Total=6642 [2024-11-13 13:33:00,446 INFO L87 Difference]: Start difference. First operand 1953 states and 2004 transitions. Second operand has 82 states, 82 states have (on average 5.402439024390244) internal successors, (443), 82 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:33:15,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:33:15,879 INFO L93 Difference]: Finished difference Result 2043 states and 2088 transitions. [2024-11-13 13:33:15,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 251 states. [2024-11-13 13:33:15,879 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 5.402439024390244) internal successors, (443), 82 states have internal predecessors, (443), 0 states have call successors, (0), 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 1492 [2024-11-13 13:33:15,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:33:15,885 INFO L225 Difference]: With dead ends: 2043 [2024-11-13 13:33:15,885 INFO L226 Difference]: Without dead ends: 2043 [2024-11-13 13:33:15,888 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3256 GetRequests, 2909 SyntacticMatches, 37 SemanticMatches, 310 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30173 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=16520, Invalid=80512, Unknown=0, NotChecked=0, Total=97032 [2024-11-13 13:33:15,888 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 120 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 11698 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 11724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 11698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:33:15,889 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 149 Invalid, 11724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 11698 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-13 13:33:15,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2024-11-13 13:33:15,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 2035. [2024-11-13 13:33:15,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2035 states, 2034 states have (on average 1.022615535889872) internal successors, (2080), 2034 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:33:15,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 2080 transitions. [2024-11-13 13:33:15,901 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 2080 transitions. Word has length 1492 [2024-11-13 13:33:15,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:33:15,902 INFO L471 AbstractCegarLoop]: Abstraction has 2035 states and 2080 transitions. [2024-11-13 13:33:15,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 5.402439024390244) internal successors, (443), 82 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:33:15,902 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 2080 transitions. [2024-11-13 13:33:15,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1501 [2024-11-13 13:33:15,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:33:15,917 INFO L215 NwaCegarLoop]: trace histogram [340, 340, 339, 339, 24, 23, 23, 23, 23, 23, 1, 1, 1] [2024-11-13 13:33:15,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-13 13:33:16,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:33:16,118 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:33:16,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:33:16,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1248319860, now seen corresponding path program 21 times [2024-11-13 13:33:16,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:33:16,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543585611] [2024-11-13 13:33:16,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:33:16,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:33:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:33:23,983 INFO L134 CoverageAnalysis]: Checked inductivity of 239542 backedges. 189221 proven. 20116 refuted. 0 times theorem prover too weak. 30205 trivial. 0 not checked. [2024-11-13 13:33:23,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:33:23,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543585611] [2024-11-13 13:33:23,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543585611] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:33:23,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283420563] [2024-11-13 13:33:23,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:33:23,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:33:23,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:33:23,986 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:33:23,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-13 13:33:33,254 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2024-11-13 13:33:33,254 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:33:33,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 2726 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-13 13:33:33,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:33:36,640 INFO L134 CoverageAnalysis]: Checked inductivity of 239542 backedges. 115368 proven. 28128 refuted. 0 times theorem prover too weak. 96046 trivial. 0 not checked. [2024-11-13 13:33:36,640 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:33:41,442 INFO L134 CoverageAnalysis]: Checked inductivity of 239542 backedges. 115368 proven. 28128 refuted. 0 times theorem prover too weak. 96046 trivial. 0 not checked. [2024-11-13 13:33:41,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283420563] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:33:41,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:33:41,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 61, 61] total 161 [2024-11-13 13:33:41,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916212377] [2024-11-13 13:33:41,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:33:41,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 161 states [2024-11-13 13:33:41,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:33:41,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2024-11-13 13:33:41,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3761, Invalid=21999, Unknown=0, NotChecked=0, Total=25760 [2024-11-13 13:33:41,446 INFO L87 Difference]: Start difference. First operand 2035 states and 2080 transitions. Second operand has 161 states, 161 states have (on average 4.894409937888199) internal successors, (788), 161 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:34:25,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:34:25,343 INFO L93 Difference]: Finished difference Result 3569 states and 3696 transitions. [2024-11-13 13:34:25,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 631 states. [2024-11-13 13:34:25,344 INFO L78 Accepts]: Start accepts. Automaton has has 161 states, 161 states have (on average 4.894409937888199) internal successors, (788), 161 states have internal predecessors, (788), 0 states have call successors, (0), 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 1500 [2024-11-13 13:34:25,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:34:25,349 INFO L225 Difference]: With dead ends: 3569 [2024-11-13 13:34:25,350 INFO L226 Difference]: Without dead ends: 3569 [2024-11-13 13:34:25,367 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3668 GetRequests, 2882 SyntacticMatches, 0 SemanticMatches, 786 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225490 ImplicationChecksByTransitivity, 41.0s TimeCoverageRelationStatistics Valid=74111, Invalid=546045, Unknown=0, NotChecked=0, Total=620156 [2024-11-13 13:34:25,367 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 1731 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 17950 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1731 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 18088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 17950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:34:25,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1731 Valid, 212 Invalid, 18088 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [138 Valid, 17950 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2024-11-13 13:34:25,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3569 states. [2024-11-13 13:34:25,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3569 to 2755. [2024-11-13 13:34:25,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2755 states, 2754 states have (on average 1.0308641975308641) internal successors, (2839), 2754 states have internal predecessors, (2839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:34:25,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2755 states to 2755 states and 2839 transitions. [2024-11-13 13:34:25,394 INFO L78 Accepts]: Start accepts. Automaton has 2755 states and 2839 transitions. Word has length 1500 [2024-11-13 13:34:25,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:34:25,395 INFO L471 AbstractCegarLoop]: Abstraction has 2755 states and 2839 transitions. [2024-11-13 13:34:25,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 161 states, 161 states have (on average 4.894409937888199) internal successors, (788), 161 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:34:25,396 INFO L276 IsEmpty]: Start isEmpty. Operand 2755 states and 2839 transitions. [2024-11-13 13:34:25,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1949 [2024-11-13 13:34:25,435 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:34:25,435 INFO L215 NwaCegarLoop]: trace histogram [446, 446, 445, 445, 28, 27, 27, 27, 27, 27, 1, 1, 1] [2024-11-13 13:34:25,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-13 13:34:25,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-11-13 13:34:25,636 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:34:25,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:34:25,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1752064358, now seen corresponding path program 22 times [2024-11-13 13:34:25,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:34:25,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307317496] [2024-11-13 13:34:25,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:34:25,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:34:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:34:36,409 INFO L134 CoverageAnalysis]: Checked inductivity of 410670 backedges. 205772 proven. 86417 refuted. 0 times theorem prover too weak. 118481 trivial. 0 not checked. [2024-11-13 13:34:36,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:34:36,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307317496] [2024-11-13 13:34:36,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307317496] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:34:36,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361369644] [2024-11-13 13:34:36,410 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 13:34:36,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:34:36,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:34:36,412 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:34:36,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-13 13:34:50,288 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 13:34:50,288 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:34:50,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 6697 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-13 13:34:50,343 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:34:53,076 INFO L134 CoverageAnalysis]: Checked inductivity of 410670 backedges. 307288 proven. 20936 refuted. 0 times theorem prover too weak. 82446 trivial. 0 not checked. [2024-11-13 13:34:53,076 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:34:55,872 INFO L134 CoverageAnalysis]: Checked inductivity of 410670 backedges. 307288 proven. 20936 refuted. 0 times theorem prover too weak. 82446 trivial. 0 not checked. [2024-11-13 13:34:55,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361369644] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:34:55,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:34:55,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 45, 45] total 107 [2024-11-13 13:34:55,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736010077] [2024-11-13 13:34:55,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:34:55,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2024-11-13 13:34:55,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:34:55,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2024-11-13 13:34:55,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1498, Invalid=9844, Unknown=0, NotChecked=0, Total=11342 [2024-11-13 13:34:55,875 INFO L87 Difference]: Start difference. First operand 2755 states and 2839 transitions. Second operand has 107 states, 107 states have (on average 6.05607476635514) internal successors, (648), 107 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:35:10,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:35:10,430 INFO L93 Difference]: Finished difference Result 2233 states and 2298 transitions. [2024-11-13 13:35:10,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 295 states. [2024-11-13 13:35:10,430 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 6.05607476635514) internal successors, (648), 107 states have internal predecessors, (648), 0 states have call successors, (0), 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 1948 [2024-11-13 13:35:10,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:35:10,434 INFO L225 Difference]: With dead ends: 2233 [2024-11-13 13:35:10,434 INFO L226 Difference]: Without dead ends: 2233 [2024-11-13 13:35:10,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4226 GetRequests, 3810 SyntacticMatches, 21 SemanticMatches, 395 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55286 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=14159, Invalid=143053, Unknown=0, NotChecked=0, Total=157212 [2024-11-13 13:35:10,441 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 246 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 17514 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 17626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 17514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:35:10,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 345 Invalid, 17626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 17514 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2024-11-13 13:35:10,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2233 states. [2024-11-13 13:35:10,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2233 to 2233. [2024-11-13 13:35:10,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2233 states, 2232 states have (on average 1.0295698924731183) internal successors, (2298), 2232 states have internal predecessors, (2298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:35:10,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2233 states to 2233 states and 2298 transitions. [2024-11-13 13:35:10,458 INFO L78 Accepts]: Start accepts. Automaton has 2233 states and 2298 transitions. Word has length 1948 [2024-11-13 13:35:10,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:35:10,459 INFO L471 AbstractCegarLoop]: Abstraction has 2233 states and 2298 transitions. [2024-11-13 13:35:10,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 6.05607476635514) internal successors, (648), 107 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:35:10,460 INFO L276 IsEmpty]: Start isEmpty. Operand 2233 states and 2298 transitions. [2024-11-13 13:35:10,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2051 [2024-11-13 13:35:10,487 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:35:10,487 INFO L215 NwaCegarLoop]: trace histogram [470, 470, 469, 469, 29, 28, 28, 28, 28, 28, 1, 1, 1] [2024-11-13 13:35:10,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-13 13:35:10,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-13 13:35:10,688 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:35:10,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:35:10,689 INFO L85 PathProgramCache]: Analyzing trace with hash 992106713, now seen corresponding path program 23 times [2024-11-13 13:35:10,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:35:10,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237569097] [2024-11-13 13:35:10,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:35:10,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:35:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:35:24,429 INFO L134 CoverageAnalysis]: Checked inductivity of 455847 backedges. 249305 proven. 3085 refuted. 0 times theorem prover too weak. 203457 trivial. 0 not checked. [2024-11-13 13:35:24,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:35:24,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237569097] [2024-11-13 13:35:24,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237569097] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:35:24,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206614909] [2024-11-13 13:35:24,429 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 13:35:24,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:35:24,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:35:24,431 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:35:24,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-13 13:37:04,264 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 74 check-sat command(s) [2024-11-13 13:37:04,264 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:37:04,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 5049 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-13 13:37:04,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:37:07,747 INFO L134 CoverageAnalysis]: Checked inductivity of 455847 backedges. 343162 proven. 27508 refuted. 0 times theorem prover too weak. 85177 trivial. 0 not checked. [2024-11-13 13:37:07,747 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:37:12,186 INFO L134 CoverageAnalysis]: Checked inductivity of 455847 backedges. 348151 proven. 22519 refuted. 0 times theorem prover too weak. 85177 trivial. 0 not checked. [2024-11-13 13:37:12,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206614909] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:37:12,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:37:12,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 123 [2024-11-13 13:37:12,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654038334] [2024-11-13 13:37:12,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:37:12,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2024-11-13 13:37:12,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:37:12,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2024-11-13 13:37:12,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2258, Invalid=12748, Unknown=0, NotChecked=0, Total=15006 [2024-11-13 13:37:12,191 INFO L87 Difference]: Start difference. First operand 2233 states and 2298 transitions. Second operand has 123 states, 123 states have (on average 4.804878048780488) internal successors, (591), 123 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:37:42,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:37:42,666 INFO L93 Difference]: Finished difference Result 2233 states and 2289 transitions. [2024-11-13 13:37:42,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 306 states. [2024-11-13 13:37:42,666 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 4.804878048780488) internal successors, (591), 123 states have internal predecessors, (591), 0 states have call successors, (0), 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 2050 [2024-11-13 13:37:42,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:37:42,672 INFO L225 Difference]: With dead ends: 2233 [2024-11-13 13:37:42,672 INFO L226 Difference]: Without dead ends: 2233 [2024-11-13 13:37:42,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4426 GetRequests, 4008 SyntacticMatches, 18 SemanticMatches, 400 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44141 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=27802, Invalid=133400, Unknown=0, NotChecked=0, Total=161202 [2024-11-13 13:37:42,681 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 120 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 19308 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 19335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 19308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:37:42,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 172 Invalid, 19335 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [27 Valid, 19308 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2024-11-13 13:37:42,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2233 states. [2024-11-13 13:37:42,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2233 to 2233. [2024-11-13 13:37:42,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2233 states, 2232 states have (on average 1.0255376344086022) internal successors, (2289), 2232 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:37:42,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2233 states to 2233 states and 2289 transitions. [2024-11-13 13:37:42,698 INFO L78 Accepts]: Start accepts. Automaton has 2233 states and 2289 transitions. Word has length 2050 [2024-11-13 13:37:42,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:37:42,699 INFO L471 AbstractCegarLoop]: Abstraction has 2233 states and 2289 transitions. [2024-11-13 13:37:42,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 4.804878048780488) internal successors, (591), 123 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:37:42,700 INFO L276 IsEmpty]: Start isEmpty. Operand 2233 states and 2289 transitions. [2024-11-13 13:37:42,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2063 [2024-11-13 13:37:42,727 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:37:42,728 INFO L215 NwaCegarLoop]: trace histogram [473, 473, 472, 472, 29, 28, 28, 28, 28, 28, 1, 1, 1] [2024-11-13 13:37:42,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-13 13:37:42,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-13 13:37:42,928 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:37:42,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:37:42,929 INFO L85 PathProgramCache]: Analyzing trace with hash 262478154, now seen corresponding path program 24 times [2024-11-13 13:37:42,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:37:42,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529611434] [2024-11-13 13:37:42,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:37:42,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:37:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:37:56,194 INFO L134 CoverageAnalysis]: Checked inductivity of 461580 backedges. 253633 proven. 3372 refuted. 0 times theorem prover too weak. 204575 trivial. 0 not checked. [2024-11-13 13:37:56,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:37:56,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529611434] [2024-11-13 13:37:56,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529611434] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:37:56,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487330120] [2024-11-13 13:37:56,195 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 13:37:56,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:37:56,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:37:56,197 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:37:56,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-13 13:40:19,293 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 75 check-sat command(s) [2024-11-13 13:40:19,293 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:40:19,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 4873 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-13 13:40:19,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:40:23,862 INFO L134 CoverageAnalysis]: Checked inductivity of 461580 backedges. 216876 proven. 52322 refuted. 0 times theorem prover too weak. 192382 trivial. 0 not checked. [2024-11-13 13:40:23,863 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:40:29,885 INFO L134 CoverageAnalysis]: Checked inductivity of 461580 backedges. 216876 proven. 52322 refuted. 0 times theorem prover too weak. 192382 trivial. 0 not checked. [2024-11-13 13:40:29,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487330120] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:40:29,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:40:29,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 65, 65] total 175 [2024-11-13 13:40:29,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390181] [2024-11-13 13:40:29,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:40:29,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 175 states [2024-11-13 13:40:29,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:40:29,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2024-11-13 13:40:29,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3997, Invalid=26453, Unknown=0, NotChecked=0, Total=30450 [2024-11-13 13:40:29,892 INFO L87 Difference]: Start difference. First operand 2233 states and 2289 transitions. Second operand has 175 states, 175 states have (on average 4.268571428571429) internal successors, (747), 175 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:40:57,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:40:57,131 INFO L93 Difference]: Finished difference Result 3847 states and 3961 transitions. [2024-11-13 13:40:57,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 397 states. [2024-11-13 13:40:57,131 INFO L78 Accepts]: Start accepts. Automaton has has 175 states, 175 states have (on average 4.268571428571429) internal successors, (747), 175 states have internal predecessors, (747), 0 states have call successors, (0), 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 2062 [2024-11-13 13:40:57,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:40:57,140 INFO L225 Difference]: With dead ends: 3847 [2024-11-13 13:40:57,140 INFO L226 Difference]: Without dead ends: 3847 [2024-11-13 13:40:57,158 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4565 GetRequests, 3998 SyntacticMatches, 2 SemanticMatches, 565 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106084 ImplicationChecksByTransitivity, 31.1s TimeCoverageRelationStatistics Valid=40378, Invalid=280544, Unknown=0, NotChecked=0, Total=320922 [2024-11-13 13:40:57,159 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 1585 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 7316 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 7389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 7316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:40:57,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1585 Valid, 60 Invalid, 7389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 7316 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-13 13:40:57,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3847 states. [2024-11-13 13:40:57,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3847 to 2563. [2024-11-13 13:40:57,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2563 states, 2562 states have (on average 1.0214676034348165) internal successors, (2617), 2562 states have internal predecessors, (2617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:40:57,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 2617 transitions. [2024-11-13 13:40:57,190 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 2617 transitions. Word has length 2062 [2024-11-13 13:40:57,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:40:57,191 INFO L471 AbstractCegarLoop]: Abstraction has 2563 states and 2617 transitions. [2024-11-13 13:40:57,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 175 states, 175 states have (on average 4.268571428571429) internal successors, (747), 175 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:40:57,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 2617 transitions. [2024-11-13 13:40:57,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2393 [2024-11-13 13:40:57,225 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:40:57,226 INFO L215 NwaCegarLoop]: trace histogram [551, 551, 550, 550, 32, 31, 31, 31, 31, 31, 1, 1, 1] [2024-11-13 13:40:57,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-13 13:40:57,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:40:57,427 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-13 13:40:57,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:40:57,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1006275899, now seen corresponding path program 25 times [2024-11-13 13:40:57,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:40:57,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403202376] [2024-11-13 13:40:57,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:40:57,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:40:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:41:17,574 INFO L134 CoverageAnalysis]: Checked inductivity of 625452 backedges. 339099 proven. 3663 refuted. 0 times theorem prover too weak. 282690 trivial. 0 not checked. [2024-11-13 13:41:17,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:41:17,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403202376] [2024-11-13 13:41:17,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403202376] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:41:17,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665100349] [2024-11-13 13:41:17,575 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 13:41:17,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:41:17,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:41:17,576 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:41:17,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d2a21f-8e9c-4b74-9143-dbdeb55f2cd4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-13 13:41:19,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:41:19,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 8190 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-13 13:41:19,930 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:41:23,201 INFO L134 CoverageAnalysis]: Checked inductivity of 625452 backedges. 480205 proven. 30706 refuted. 0 times theorem prover too weak. 114541 trivial. 0 not checked. [2024-11-13 13:41:23,201 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:41:26,358 INFO L134 CoverageAnalysis]: Checked inductivity of 625452 backedges. 480205 proven. 30706 refuted. 0 times theorem prover too weak. 114541 trivial. 0 not checked. [2024-11-13 13:41:26,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665100349] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:41:26,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:41:26,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 51, 51] total 101 [2024-11-13 13:41:26,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687053670] [2024-11-13 13:41:26,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:41:26,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2024-11-13 13:41:26,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:41:26,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2024-11-13 13:41:26,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1703, Invalid=8397, Unknown=0, NotChecked=0, Total=10100 [2024-11-13 13:41:26,363 INFO L87 Difference]: Start difference. First operand 2563 states and 2617 transitions. Second operand has 101 states, 101 states have (on average 5.435643564356436) internal successors, (549), 101 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)