./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/lockfree-3.3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/lockfree-3.3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl --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 1db117ae3c729419255b5da4a7f4ecd64b2d99a167d11f22266a773c4ff13cdb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:06:50,166 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:06:50,306 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:06:50,320 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:06:50,321 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:06:50,363 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:06:50,365 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:06:50,366 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:06:50,367 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:06:50,372 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:06:50,374 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:06:50,374 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:06:50,375 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:06:50,376 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:06:50,377 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:06:50,377 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:06:50,378 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:06:50,378 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:06:50,379 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:06:50,379 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:06:50,380 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:06:50,380 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:06:50,381 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:06:50,381 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:06:50,382 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:06:50,382 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:06:50,383 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:06:50,383 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:06:50,384 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:06:50,384 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:06:50,386 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:06:50,386 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:06:50,386 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:06:50,387 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:06:50,387 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:06:50,387 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:06:50,387 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:06:50,388 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:06:50,388 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1db117ae3c729419255b5da4a7f4ecd64b2d99a167d11f22266a773c4ff13cdb [2023-11-12 02:06:50,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:06:50,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:06:50,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:06:50,702 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:06:50,703 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:06:50,704 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/memsafety/lockfree-3.3.i [2023-11-12 02:06:54,020 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:06:54,298 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:06:54,299 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/sv-benchmarks/c/memsafety/lockfree-3.3.i [2023-11-12 02:06:54,314 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/data/dc4c4307b/775333609b61440b981dc65eee13e527/FLAGaaf74fdd8 [2023-11-12 02:06:54,331 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/data/dc4c4307b/775333609b61440b981dc65eee13e527 [2023-11-12 02:06:54,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:06:54,335 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:06:54,337 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:06:54,337 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:06:54,343 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:06:54,344 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:06:54" (1/1) ... [2023-11-12 02:06:54,345 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47fec844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:54, skipping insertion in model container [2023-11-12 02:06:54,346 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:06:54" (1/1) ... [2023-11-12 02:06:54,391 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:06:54,724 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:06:54,738 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:06:54,802 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:06:54,840 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:06:54,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:54 WrapperNode [2023-11-12 02:06:54,841 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:06:54,842 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:06:54,842 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:06:54,843 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:06:54,850 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:54" (1/1) ... [2023-11-12 02:06:54,868 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:54" (1/1) ... [2023-11-12 02:06:54,904 INFO L138 Inliner]: procedures = 125, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 127 [2023-11-12 02:06:54,904 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:06:54,906 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:06:54,910 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:06:54,911 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:06:54,923 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:54" (1/1) ... [2023-11-12 02:06:54,923 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:54" (1/1) ... [2023-11-12 02:06:54,936 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:54" (1/1) ... [2023-11-12 02:06:54,951 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:54" (1/1) ... [2023-11-12 02:06:54,959 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:54" (1/1) ... [2023-11-12 02:06:54,963 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:54" (1/1) ... [2023-11-12 02:06:54,967 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:54" (1/1) ... [2023-11-12 02:06:54,974 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:54" (1/1) ... [2023-11-12 02:06:54,977 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:06:54,989 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:06:54,990 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:06:54,990 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:06:54,991 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:54" (1/1) ... [2023-11-12 02:06:54,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:06:55,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:55,041 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:06:55,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:06:55,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:06:55,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:06:55,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:06:55,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:06:55,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 02:06:55,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 02:06:55,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:06:55,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:06:55,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:06:55,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:06:55,192 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:06:55,194 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:06:55,610 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:06:55,618 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:06:55,618 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 02:06:55,620 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:06:55 BoogieIcfgContainer [2023-11-12 02:06:55,620 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:06:55,623 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:06:55,623 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:06:55,626 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:06:55,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:06:54" (1/3) ... [2023-11-12 02:06:55,627 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d856745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:06:55, skipping insertion in model container [2023-11-12 02:06:55,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:54" (2/3) ... [2023-11-12 02:06:55,628 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d856745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:06:55, skipping insertion in model container [2023-11-12 02:06:55,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:06:55" (3/3) ... [2023-11-12 02:06:55,629 INFO L112 eAbstractionObserver]: Analyzing ICFG lockfree-3.3.i [2023-11-12 02:06:55,650 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:06:55,650 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-11-12 02:06:55,697 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:06:55,704 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2ec0043e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:06:55,704 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-12 02:06:55,709 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 43 states have (on average 1.930232558139535) internal successors, (83), 63 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:55,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 02:06:55,715 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:55,716 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:06:55,717 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:06:55,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:55,722 INFO L85 PathProgramCache]: Analyzing trace with hash 28819106, now seen corresponding path program 1 times [2023-11-12 02:06:55,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:55,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670664227] [2023-11-12 02:06:55,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:55,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:55,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:55,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:55,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670664227] [2023-11-12 02:06:55,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670664227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:55,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:55,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:06:55,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462452955] [2023-11-12 02:06:55,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:55,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:06:55,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:56,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:06:56,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:06:56,020 INFO L87 Difference]: Start difference. First operand has 64 states, 43 states have (on average 1.930232558139535) internal successors, (83), 63 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:56,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:56,048 INFO L93 Difference]: Finished difference Result 64 states and 81 transitions. [2023-11-12 02:06:56,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:06:56,051 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-12 02:06:56,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:56,061 INFO L225 Difference]: With dead ends: 64 [2023-11-12 02:06:56,061 INFO L226 Difference]: Without dead ends: 62 [2023-11-12 02:06:56,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:06:56,070 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:56,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:06:56,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-12 02:06:56,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-11-12 02:06:56,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 42 states have (on average 1.880952380952381) internal successors, (79), 61 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:56,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 79 transitions. [2023-11-12 02:06:56,118 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 79 transitions. Word has length 5 [2023-11-12 02:06:56,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:56,119 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 79 transitions. [2023-11-12 02:06:56,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:56,119 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 79 transitions. [2023-11-12 02:06:56,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-12 02:06:56,120 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:56,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:56,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:06:56,122 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:06:56,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:56,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1806851052, now seen corresponding path program 1 times [2023-11-12 02:06:56,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:56,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480733598] [2023-11-12 02:06:56,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:56,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:56,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:56,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:56,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480733598] [2023-11-12 02:06:56,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480733598] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:56,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:56,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:06:56,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306116525] [2023-11-12 02:06:56,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:56,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:06:56,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:56,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:06:56,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:06:56,228 INFO L87 Difference]: Start difference. First operand 62 states and 79 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:56,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:56,267 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2023-11-12 02:06:56,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:06:56,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-12 02:06:56,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:56,271 INFO L225 Difference]: With dead ends: 63 [2023-11-12 02:06:56,272 INFO L226 Difference]: Without dead ends: 63 [2023-11-12 02:06:56,274 INFO L412 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 [2023-11-12 02:06:56,275 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:56,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 151 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:06:56,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-11-12 02:06:56,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-11-12 02:06:56,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 62 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:56,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 80 transitions. [2023-11-12 02:06:56,285 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 80 transitions. Word has length 7 [2023-11-12 02:06:56,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:56,285 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 80 transitions. [2023-11-12 02:06:56,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:56,286 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 80 transitions. [2023-11-12 02:06:56,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-12 02:06:56,287 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:56,287 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:56,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:06:56,287 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:06:56,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:56,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1806910634, now seen corresponding path program 1 times [2023-11-12 02:06:56,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:56,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007703076] [2023-11-12 02:06:56,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:56,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:56,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:56,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:56,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007703076] [2023-11-12 02:06:56,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007703076] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:56,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:56,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:06:56,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052246888] [2023-11-12 02:06:56,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:56,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:06:56,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:56,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:06:56,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:06:56,401 INFO L87 Difference]: Start difference. First operand 63 states and 80 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:56,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:56,442 INFO L93 Difference]: Finished difference Result 111 states and 145 transitions. [2023-11-12 02:06:56,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:06:56,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-12 02:06:56,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:56,445 INFO L225 Difference]: With dead ends: 111 [2023-11-12 02:06:56,446 INFO L226 Difference]: Without dead ends: 111 [2023-11-12 02:06:56,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:06:56,448 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 62 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:56,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 138 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:06:56,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-11-12 02:06:56,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 93. [2023-11-12 02:06:56,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 73 states have (on average 1.8767123287671232) internal successors, (137), 92 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:56,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 137 transitions. [2023-11-12 02:06:56,462 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 137 transitions. Word has length 7 [2023-11-12 02:06:56,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:56,462 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 137 transitions. [2023-11-12 02:06:56,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:56,463 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 137 transitions. [2023-11-12 02:06:56,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 02:06:56,464 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:56,464 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:56,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:06:56,465 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:06:56,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:56,466 INFO L85 PathProgramCache]: Analyzing trace with hash 177749355, now seen corresponding path program 1 times [2023-11-12 02:06:56,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:56,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796135448] [2023-11-12 02:06:56,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:56,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:56,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:56,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:56,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:56,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796135448] [2023-11-12 02:06:56,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796135448] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:56,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:56,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:06:56,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582913798] [2023-11-12 02:06:56,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:56,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:06:56,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:56,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:06:56,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:06:56,652 INFO L87 Difference]: Start difference. First operand 93 states and 137 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:56,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:56,760 INFO L93 Difference]: Finished difference Result 148 states and 212 transitions. [2023-11-12 02:06:56,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:06:56,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-12 02:06:56,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:56,762 INFO L225 Difference]: With dead ends: 148 [2023-11-12 02:06:56,763 INFO L226 Difference]: Without dead ends: 148 [2023-11-12 02:06:56,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:06:56,765 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 45 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:56,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 209 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:06:56,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-11-12 02:06:56,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 127. [2023-11-12 02:06:56,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 107 states have (on average 1.841121495327103) internal successors, (197), 126 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:56,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 197 transitions. [2023-11-12 02:06:56,801 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 197 transitions. Word has length 8 [2023-11-12 02:06:56,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:56,801 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 197 transitions. [2023-11-12 02:06:56,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:56,802 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 197 transitions. [2023-11-12 02:06:56,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 02:06:56,802 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:56,803 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:56,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:06:56,803 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:06:56,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:56,805 INFO L85 PathProgramCache]: Analyzing trace with hash 179653412, now seen corresponding path program 1 times [2023-11-12 02:06:56,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:56,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306733780] [2023-11-12 02:06:56,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:56,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:56,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:56,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:56,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306733780] [2023-11-12 02:06:56,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306733780] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:56,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:56,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:06:56,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935905553] [2023-11-12 02:06:56,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:56,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:06:56,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:56,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:06:56,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:06:56,850 INFO L87 Difference]: Start difference. First operand 127 states and 197 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:56,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:56,916 INFO L93 Difference]: Finished difference Result 209 states and 319 transitions. [2023-11-12 02:06:56,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:06:56,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-12 02:06:56,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:56,919 INFO L225 Difference]: With dead ends: 209 [2023-11-12 02:06:56,919 INFO L226 Difference]: Without dead ends: 206 [2023-11-12 02:06:56,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:06:56,921 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 63 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:56,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 121 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:06:56,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-11-12 02:06:56,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 185. [2023-11-12 02:06:56,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 165 states have (on average 1.8363636363636364) internal successors, (303), 184 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:56,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 303 transitions. [2023-11-12 02:06:56,941 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 303 transitions. Word has length 8 [2023-11-12 02:06:56,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:56,941 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 303 transitions. [2023-11-12 02:06:56,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:56,942 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 303 transitions. [2023-11-12 02:06:56,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 02:06:56,943 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:56,943 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:56,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:06:56,943 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:06:56,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:56,944 INFO L85 PathProgramCache]: Analyzing trace with hash 179596397, now seen corresponding path program 1 times [2023-11-12 02:06:56,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:56,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232015598] [2023-11-12 02:06:56,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:56,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:57,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:57,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:57,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232015598] [2023-11-12 02:06:57,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232015598] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:57,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:57,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:06:57,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111169663] [2023-11-12 02:06:57,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:57,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:06:57,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:57,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:06:57,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:06:57,016 INFO L87 Difference]: Start difference. First operand 185 states and 303 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:57,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:57,097 INFO L93 Difference]: Finished difference Result 261 states and 411 transitions. [2023-11-12 02:06:57,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:06:57,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-12 02:06:57,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:57,100 INFO L225 Difference]: With dead ends: 261 [2023-11-12 02:06:57,101 INFO L226 Difference]: Without dead ends: 261 [2023-11-12 02:06:57,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:06:57,109 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 67 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:57,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 171 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:06:57,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-11-12 02:06:57,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 240. [2023-11-12 02:06:57,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 222 states have (on average 1.7882882882882882) internal successors, (397), 239 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) [2023-11-12 02:06:57,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 397 transitions. [2023-11-12 02:06:57,155 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 397 transitions. Word has length 8 [2023-11-12 02:06:57,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:57,156 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 397 transitions. [2023-11-12 02:06:57,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:57,157 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 397 transitions. [2023-11-12 02:06:57,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 02:06:57,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:57,157 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:57,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:06:57,158 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:06:57,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:57,163 INFO L85 PathProgramCache]: Analyzing trace with hash 179596398, now seen corresponding path program 1 times [2023-11-12 02:06:57,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:57,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208399184] [2023-11-12 02:06:57,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:57,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:57,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:57,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:57,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208399184] [2023-11-12 02:06:57,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208399184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:57,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:57,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:06:57,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862021801] [2023-11-12 02:06:57,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:57,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:06:57,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:57,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:06:57,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:06:57,269 INFO L87 Difference]: Start difference. First operand 240 states and 397 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:57,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:57,328 INFO L93 Difference]: Finished difference Result 256 states and 402 transitions. [2023-11-12 02:06:57,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:06:57,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-12 02:06:57,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:57,331 INFO L225 Difference]: With dead ends: 256 [2023-11-12 02:06:57,332 INFO L226 Difference]: Without dead ends: 256 [2023-11-12 02:06:57,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:06:57,333 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 66 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:57,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 179 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:06:57,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-11-12 02:06:57,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 238. [2023-11-12 02:06:57,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 222 states have (on average 1.7522522522522523) internal successors, (389), 237 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:57,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 389 transitions. [2023-11-12 02:06:57,347 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 389 transitions. Word has length 8 [2023-11-12 02:06:57,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:57,347 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 389 transitions. [2023-11-12 02:06:57,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:57,348 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 389 transitions. [2023-11-12 02:06:57,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 02:06:57,348 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:57,349 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:57,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:06:57,349 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:06:57,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:57,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1272529015, now seen corresponding path program 1 times [2023-11-12 02:06:57,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:57,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544910510] [2023-11-12 02:06:57,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:57,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:57,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:57,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:57,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:57,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544910510] [2023-11-12 02:06:57,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544910510] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:57,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:57,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:06:57,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856865828] [2023-11-12 02:06:57,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:57,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:06:57,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:57,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:06:57,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:06:57,403 INFO L87 Difference]: Start difference. First operand 238 states and 389 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:57,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:57,443 INFO L93 Difference]: Finished difference Result 220 states and 330 transitions. [2023-11-12 02:06:57,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:06:57,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-12 02:06:57,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:57,446 INFO L225 Difference]: With dead ends: 220 [2023-11-12 02:06:57,446 INFO L226 Difference]: Without dead ends: 220 [2023-11-12 02:06:57,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:06:57,447 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 53 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:57,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 192 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:06:57,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-11-12 02:06:57,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 195. [2023-11-12 02:06:57,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 183 states have (on average 1.6994535519125684) internal successors, (311), 194 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:57,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 311 transitions. [2023-11-12 02:06:57,458 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 311 transitions. Word has length 9 [2023-11-12 02:06:57,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:57,458 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 311 transitions. [2023-11-12 02:06:57,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:57,459 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 311 transitions. [2023-11-12 02:06:57,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-12 02:06:57,459 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:57,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:57,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:06:57,460 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:06:57,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:57,461 INFO L85 PathProgramCache]: Analyzing trace with hash 845049582, now seen corresponding path program 1 times [2023-11-12 02:06:57,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:57,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240898657] [2023-11-12 02:06:57,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:57,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:57,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:57,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:57,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240898657] [2023-11-12 02:06:57,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240898657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:57,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:57,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:06:57,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376441165] [2023-11-12 02:06:57,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:57,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:06:57,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:57,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:06:57,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:06:57,518 INFO L87 Difference]: Start difference. First operand 195 states and 311 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:57,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:57,556 INFO L93 Difference]: Finished difference Result 302 states and 452 transitions. [2023-11-12 02:06:57,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:06:57,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-12 02:06:57,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:57,559 INFO L225 Difference]: With dead ends: 302 [2023-11-12 02:06:57,559 INFO L226 Difference]: Without dead ends: 302 [2023-11-12 02:06:57,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:06:57,560 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 55 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:57,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 176 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:06:57,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-11-12 02:06:57,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 278. [2023-11-12 02:06:57,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 266 states have (on average 1.6090225563909775) internal successors, (428), 277 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:57,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 428 transitions. [2023-11-12 02:06:57,592 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 428 transitions. Word has length 10 [2023-11-12 02:06:57,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:57,593 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 428 transitions. [2023-11-12 02:06:57,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:57,593 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 428 transitions. [2023-11-12 02:06:57,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-12 02:06:57,595 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:57,595 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:57,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:06:57,595 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:06:57,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:57,596 INFO L85 PathProgramCache]: Analyzing trace with hash 22246394, now seen corresponding path program 1 times [2023-11-12 02:06:57,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:57,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560364545] [2023-11-12 02:06:57,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:57,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:57,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:57,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:57,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560364545] [2023-11-12 02:06:57,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560364545] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:06:57,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498492286] [2023-11-12 02:06:57,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:57,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:57,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:57,770 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:06:57,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:06:57,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:57,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:06:57,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:06:57,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:57,965 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:06:58,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:58,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498492286] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:06:58,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:06:58,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2023-11-12 02:06:58,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421779816] [2023-11-12 02:06:58,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:06:58,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:06:58,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:58,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:06:58,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:06:58,032 INFO L87 Difference]: Start difference. First operand 278 states and 428 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:58,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:58,082 INFO L93 Difference]: Finished difference Result 282 states and 418 transitions. [2023-11-12 02:06:58,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:06:58,083 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-12 02:06:58,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:58,085 INFO L225 Difference]: With dead ends: 282 [2023-11-12 02:06:58,085 INFO L226 Difference]: Without dead ends: 282 [2023-11-12 02:06:58,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:06:58,087 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 93 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:58,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 338 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:06:58,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-11-12 02:06:58,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 274. [2023-11-12 02:06:58,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 262 states have (on average 1.5877862595419847) internal successors, (416), 273 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:58,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 416 transitions. [2023-11-12 02:06:58,098 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 416 transitions. Word has length 16 [2023-11-12 02:06:58,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:58,099 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 416 transitions. [2023-11-12 02:06:58,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:58,099 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 416 transitions. [2023-11-12 02:06:58,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-12 02:06:58,102 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:58,102 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:58,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:06:58,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-12 02:06:58,319 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:06:58,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:58,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1902356162, now seen corresponding path program 1 times [2023-11-12 02:06:58,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:58,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827515010] [2023-11-12 02:06:58,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:58,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:58,421 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:58,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:58,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827515010] [2023-11-12 02:06:58,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827515010] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:06:58,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429061785] [2023-11-12 02:06:58,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:58,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:58,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:58,423 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:06:58,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:06:58,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:58,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:06:58,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:06:58,553 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:58,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:06:58,623 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:58,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429061785] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:06:58,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:06:58,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2023-11-12 02:06:58,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604424684] [2023-11-12 02:06:58,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:06:58,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:06:58,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:58,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:06:58,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:06:58,626 INFO L87 Difference]: Start difference. First operand 274 states and 416 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:58,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:58,711 INFO L93 Difference]: Finished difference Result 451 states and 647 transitions. [2023-11-12 02:06:58,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:06:58,712 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-12 02:06:58,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:58,715 INFO L225 Difference]: With dead ends: 451 [2023-11-12 02:06:58,715 INFO L226 Difference]: Without dead ends: 451 [2023-11-12 02:06:58,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:06:58,716 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 134 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:58,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 308 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:06:58,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2023-11-12 02:06:58,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 387. [2023-11-12 02:06:58,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 375 states have (on average 1.5333333333333334) internal successors, (575), 386 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:58,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 575 transitions. [2023-11-12 02:06:58,733 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 575 transitions. Word has length 16 [2023-11-12 02:06:58,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:58,734 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 575 transitions. [2023-11-12 02:06:58,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:58,734 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 575 transitions. [2023-11-12 02:06:58,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-12 02:06:58,740 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:58,740 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:58,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:06:58,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-12 02:06:58,946 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:06:58,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:58,946 INFO L85 PathProgramCache]: Analyzing trace with hash 53823374, now seen corresponding path program 2 times [2023-11-12 02:06:58,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:58,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563357496] [2023-11-12 02:06:58,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:58,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:59,064 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:06:59,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:59,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563357496] [2023-11-12 02:06:59,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563357496] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:06:59,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535917481] [2023-11-12 02:06:59,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:06:59,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:59,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:59,066 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:06:59,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:06:59,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 02:06:59,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:06:59,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:06:59,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:06:59,212 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:59,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:06:59,265 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:59,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535917481] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:06:59,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:06:59,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 8 [2023-11-12 02:06:59,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604471228] [2023-11-12 02:06:59,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:06:59,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:06:59,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:59,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:06:59,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:06:59,269 INFO L87 Difference]: Start difference. First operand 387 states and 575 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:59,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:59,398 INFO L93 Difference]: Finished difference Result 451 states and 631 transitions. [2023-11-12 02:06:59,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:06:59,398 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-11-12 02:06:59,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:59,401 INFO L225 Difference]: With dead ends: 451 [2023-11-12 02:06:59,402 INFO L226 Difference]: Without dead ends: 451 [2023-11-12 02:06:59,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:06:59,403 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 298 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:59,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 387 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:06:59,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2023-11-12 02:06:59,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 387. [2023-11-12 02:06:59,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 375 states have (on average 1.4906666666666666) internal successors, (559), 386 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:59,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 559 transitions. [2023-11-12 02:06:59,415 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 559 transitions. Word has length 22 [2023-11-12 02:06:59,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:59,415 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 559 transitions. [2023-11-12 02:06:59,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:59,415 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 559 transitions. [2023-11-12 02:06:59,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-12 02:06:59,417 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:59,417 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:59,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:06:59,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-12 02:06:59,629 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:06:59,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:59,630 INFO L85 PathProgramCache]: Analyzing trace with hash -2107196217, now seen corresponding path program 1 times [2023-11-12 02:06:59,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:59,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927426091] [2023-11-12 02:06:59,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:59,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:59,701 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:59,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:59,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927426091] [2023-11-12 02:06:59,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927426091] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:06:59,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128794004] [2023-11-12 02:06:59,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:59,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:59,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:59,704 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:06:59,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:06:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:59,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 02:06:59,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:06:59,888 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:59,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:06:59,959 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:59,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128794004] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:06:59,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:06:59,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-11-12 02:06:59,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605674675] [2023-11-12 02:06:59,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:06:59,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:06:59,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:59,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:06:59,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:06:59,965 INFO L87 Difference]: Start difference. First operand 387 states and 559 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:00,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:00,071 INFO L93 Difference]: Finished difference Result 927 states and 1321 transitions. [2023-11-12 02:07:00,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:07:00,072 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-11-12 02:07:00,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:00,077 INFO L225 Difference]: With dead ends: 927 [2023-11-12 02:07:00,077 INFO L226 Difference]: Without dead ends: 927 [2023-11-12 02:07:00,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:07:00,078 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 176 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:00,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 163 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:07:00,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2023-11-12 02:07:00,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 806. [2023-11-12 02:07:00,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 794 states have (on average 1.4748110831234258) internal successors, (1171), 805 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:00,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1171 transitions. [2023-11-12 02:07:00,102 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1171 transitions. Word has length 24 [2023-11-12 02:07:00,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:00,104 INFO L495 AbstractCegarLoop]: Abstraction has 806 states and 1171 transitions. [2023-11-12 02:07:00,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:00,104 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1171 transitions. [2023-11-12 02:07:00,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 02:07:00,105 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:00,105 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:00,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:00,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:00,312 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:07:00,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:00,312 INFO L85 PathProgramCache]: Analyzing trace with hash -6965384, now seen corresponding path program 1 times [2023-11-12 02:07:00,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:00,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92524626] [2023-11-12 02:07:00,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:00,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:00,476 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:00,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:00,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92524626] [2023-11-12 02:07:00,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92524626] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:00,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371940036] [2023-11-12 02:07:00,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:00,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:00,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:00,481 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:00,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:07:00,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:00,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:07:00,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:00,638 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:00,638 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:00,709 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:00,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371940036] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:07:00,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:07:00,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-11-12 02:07:00,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091504922] [2023-11-12 02:07:00,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:00,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 02:07:00,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:00,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 02:07:00,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:07:00,713 INFO L87 Difference]: Start difference. First operand 806 states and 1171 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:00,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:00,908 INFO L93 Difference]: Finished difference Result 2058 states and 2839 transitions. [2023-11-12 02:07:00,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 02:07:00,909 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-12 02:07:00,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:00,921 INFO L225 Difference]: With dead ends: 2058 [2023-11-12 02:07:00,921 INFO L226 Difference]: Without dead ends: 2058 [2023-11-12 02:07:00,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:07:00,922 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 329 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:00,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 361 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:07:00,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2058 states. [2023-11-12 02:07:00,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2058 to 1874. [2023-11-12 02:07:00,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1874 states, 1862 states have (on average 1.4301825993555317) internal successors, (2663), 1873 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:00,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1874 states to 1874 states and 2663 transitions. [2023-11-12 02:07:00,975 INFO L78 Accepts]: Start accepts. Automaton has 1874 states and 2663 transitions. Word has length 27 [2023-11-12 02:07:00,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:00,976 INFO L495 AbstractCegarLoop]: Abstraction has 1874 states and 2663 transitions. [2023-11-12 02:07:00,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:00,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1874 states and 2663 transitions. [2023-11-12 02:07:00,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 02:07:00,977 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:00,977 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:00,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:01,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-12 02:07:01,183 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:07:01,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:01,184 INFO L85 PathProgramCache]: Analyzing trace with hash 334990594, now seen corresponding path program 1 times [2023-11-12 02:07:01,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:01,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64593034] [2023-11-12 02:07:01,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:01,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:01,284 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:07:01,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:01,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64593034] [2023-11-12 02:07:01,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64593034] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:01,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410399609] [2023-11-12 02:07:01,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:01,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:01,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:01,286 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:01,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:07:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:01,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-12 02:07:01,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:01,399 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:07:01,399 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:01,424 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:07:01,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410399609] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:07:01,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:07:01,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2023-11-12 02:07:01,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286293899] [2023-11-12 02:07:01,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:01,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:07:01,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:01,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:07:01,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:07:01,426 INFO L87 Difference]: Start difference. First operand 1874 states and 2663 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:01,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:01,509 INFO L93 Difference]: Finished difference Result 953 states and 1302 transitions. [2023-11-12 02:07:01,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:07:01,509 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-12 02:07:01,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:01,515 INFO L225 Difference]: With dead ends: 953 [2023-11-12 02:07:01,515 INFO L226 Difference]: Without dead ends: 953 [2023-11-12 02:07:01,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:07:01,518 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 100 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:01,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 419 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:07:01,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2023-11-12 02:07:01,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 883. [2023-11-12 02:07:01,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 871 states have (on average 1.4029850746268657) internal successors, (1222), 882 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:01,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1222 transitions. [2023-11-12 02:07:01,542 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1222 transitions. Word has length 27 [2023-11-12 02:07:01,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:01,542 INFO L495 AbstractCegarLoop]: Abstraction has 883 states and 1222 transitions. [2023-11-12 02:07:01,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:01,543 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1222 transitions. [2023-11-12 02:07:01,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-12 02:07:01,546 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:01,546 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:01,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:01,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-12 02:07:01,752 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:07:01,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:01,753 INFO L85 PathProgramCache]: Analyzing trace with hash 2001409998, now seen corresponding path program 1 times [2023-11-12 02:07:01,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:01,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125273693] [2023-11-12 02:07:01,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:01,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:01,914 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-12 02:07:01,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:01,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125273693] [2023-11-12 02:07:01,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125273693] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:01,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819816180] [2023-11-12 02:07:01,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:01,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:01,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:01,916 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:01,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 02:07:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:02,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-12 02:07:02,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:02,174 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 19 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:02,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:02,291 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 19 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:02,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819816180] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:07:02,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:07:02,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 13 [2023-11-12 02:07:02,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146271430] [2023-11-12 02:07:02,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:02,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 02:07:02,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:02,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 02:07:02,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:07:02,294 INFO L87 Difference]: Start difference. First operand 883 states and 1222 transitions. Second operand has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 13 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:02,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:02,654 INFO L93 Difference]: Finished difference Result 1669 states and 2229 transitions. [2023-11-12 02:07:02,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-12 02:07:02,655 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 13 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-12 02:07:02,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:02,663 INFO L225 Difference]: With dead ends: 1669 [2023-11-12 02:07:02,663 INFO L226 Difference]: Without dead ends: 1669 [2023-11-12 02:07:02,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 92 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=252, Invalid=618, Unknown=0, NotChecked=0, Total=870 [2023-11-12 02:07:02,664 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 452 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:02,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 657 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:07:02,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2023-11-12 02:07:02,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 982. [2023-11-12 02:07:02,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 970 states have (on average 1.4195876288659794) internal successors, (1377), 981 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:02,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1377 transitions. [2023-11-12 02:07:02,701 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1377 transitions. Word has length 51 [2023-11-12 02:07:02,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:02,703 INFO L495 AbstractCegarLoop]: Abstraction has 982 states and 1377 transitions. [2023-11-12 02:07:02,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 13 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:02,704 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1377 transitions. [2023-11-12 02:07:02,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-12 02:07:02,705 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:02,705 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:02,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:02,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:02,913 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:07:02,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:02,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1426339750, now seen corresponding path program 1 times [2023-11-12 02:07:02,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:02,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090443209] [2023-11-12 02:07:02,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:02,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:03,145 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 65 proven. 3 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-12 02:07:03,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:03,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090443209] [2023-11-12 02:07:03,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090443209] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:03,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457946494] [2023-11-12 02:07:03,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:03,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:03,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:03,149 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:03,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 02:07:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:03,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 02:07:03,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:03,399 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-12 02:07:03,399 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:03,462 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-12 02:07:03,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457946494] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:03,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:07:03,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 13 [2023-11-12 02:07:03,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123951087] [2023-11-12 02:07:03,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:03,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:07:03,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:03,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:07:03,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:07:03,467 INFO L87 Difference]: Start difference. First operand 982 states and 1377 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:03,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:03,604 INFO L93 Difference]: Finished difference Result 1699 states and 2321 transitions. [2023-11-12 02:07:03,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:07:03,605 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 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 59 [2023-11-12 02:07:03,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:03,614 INFO L225 Difference]: With dead ends: 1699 [2023-11-12 02:07:03,615 INFO L226 Difference]: Without dead ends: 1699 [2023-11-12 02:07:03,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:07:03,616 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 69 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:03,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 316 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:07:03,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2023-11-12 02:07:03,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1630. [2023-11-12 02:07:03,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1618 states have (on average 1.3955500618046972) internal successors, (2258), 1629 states have internal predecessors, (2258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:03,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2258 transitions. [2023-11-12 02:07:03,666 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2258 transitions. Word has length 59 [2023-11-12 02:07:03,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:03,667 INFO L495 AbstractCegarLoop]: Abstraction has 1630 states and 2258 transitions. [2023-11-12 02:07:03,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:03,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2258 transitions. [2023-11-12 02:07:03,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-12 02:07:03,669 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:03,669 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:03,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:03,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-12 02:07:03,877 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:07:03,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:03,877 INFO L85 PathProgramCache]: Analyzing trace with hash -443713253, now seen corresponding path program 1 times [2023-11-12 02:07:03,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:03,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825282157] [2023-11-12 02:07:03,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:03,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:04,025 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 27 proven. 49 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-12 02:07:04,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:04,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825282157] [2023-11-12 02:07:04,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825282157] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:04,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605649449] [2023-11-12 02:07:04,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:04,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:04,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:04,027 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:04,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-12 02:07:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:04,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 02:07:04,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:04,238 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 71 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-12 02:07:04,238 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:04,303 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 71 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-12 02:07:04,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605649449] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:07:04,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:07:04,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 12 [2023-11-12 02:07:04,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794608700] [2023-11-12 02:07:04,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:04,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-12 02:07:04,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:04,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-12 02:07:04,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:07:04,306 INFO L87 Difference]: Start difference. First operand 1630 states and 2258 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:05,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:05,651 INFO L93 Difference]: Finished difference Result 6752 states and 9207 transitions. [2023-11-12 02:07:05,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-12 02:07:05,652 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-11-12 02:07:05,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:05,689 INFO L225 Difference]: With dead ends: 6752 [2023-11-12 02:07:05,689 INFO L226 Difference]: Without dead ends: 6752 [2023-11-12 02:07:05,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=631, Invalid=2021, Unknown=0, NotChecked=0, Total=2652 [2023-11-12 02:07:05,691 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 475 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:05,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 605 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 02:07:05,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6752 states. [2023-11-12 02:07:05,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6752 to 4623. [2023-11-12 02:07:05,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4623 states, 4612 states have (on average 1.419340849956635) internal successors, (6546), 4622 states have internal predecessors, (6546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:05,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4623 states to 4623 states and 6546 transitions. [2023-11-12 02:07:05,827 INFO L78 Accepts]: Start accepts. Automaton has 4623 states and 6546 transitions. Word has length 59 [2023-11-12 02:07:05,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:05,828 INFO L495 AbstractCegarLoop]: Abstraction has 4623 states and 6546 transitions. [2023-11-12 02:07:05,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:05,828 INFO L276 IsEmpty]: Start isEmpty. Operand 4623 states and 6546 transitions. [2023-11-12 02:07:05,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-12 02:07:05,830 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:05,830 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:05,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:06,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-12 02:07:06,037 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:07:06,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:06,037 INFO L85 PathProgramCache]: Analyzing trace with hash -791217300, now seen corresponding path program 1 times [2023-11-12 02:07:06,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:06,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632097258] [2023-11-12 02:07:06,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:06,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:06,248 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 68 proven. 4 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-12 02:07:06,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:06,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632097258] [2023-11-12 02:07:06,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632097258] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:06,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577356552] [2023-11-12 02:07:06,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:06,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:06,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:06,250 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:06,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-12 02:07:06,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:06,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-12 02:07:06,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:06,478 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 101 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-12 02:07:06,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:06,558 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 103 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-12 02:07:06,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577356552] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:07:06,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:07:06,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 14 [2023-11-12 02:07:06,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251575237] [2023-11-12 02:07:06,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:06,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-12 02:07:06,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:06,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-12 02:07:06,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-11-12 02:07:06,564 INFO L87 Difference]: Start difference. First operand 4623 states and 6546 transitions. Second operand has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:07,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:07,130 INFO L93 Difference]: Finished difference Result 7525 states and 10247 transitions. [2023-11-12 02:07:07,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-12 02:07:07,131 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-11-12 02:07:07,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:07,201 INFO L225 Difference]: With dead ends: 7525 [2023-11-12 02:07:07,201 INFO L226 Difference]: Without dead ends: 7525 [2023-11-12 02:07:07,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=426, Invalid=1380, Unknown=0, NotChecked=0, Total=1806 [2023-11-12 02:07:07,203 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 256 mSDsluCounter, 953 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:07,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 1079 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:07:07,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7525 states. [2023-11-12 02:07:07,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7525 to 4423. [2023-11-12 02:07:07,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4423 states, 4412 states have (on average 1.394605621033545) internal successors, (6153), 4422 states have internal predecessors, (6153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:07,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4423 states to 4423 states and 6153 transitions. [2023-11-12 02:07:07,363 INFO L78 Accepts]: Start accepts. Automaton has 4423 states and 6153 transitions. Word has length 63 [2023-11-12 02:07:07,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:07,364 INFO L495 AbstractCegarLoop]: Abstraction has 4423 states and 6153 transitions. [2023-11-12 02:07:07,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:07,364 INFO L276 IsEmpty]: Start isEmpty. Operand 4423 states and 6153 transitions. [2023-11-12 02:07:07,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-12 02:07:07,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:07,366 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:07,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:07,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:07,573 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:07:07,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:07,574 INFO L85 PathProgramCache]: Analyzing trace with hash 767429099, now seen corresponding path program 1 times [2023-11-12 02:07:07,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:07,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859379676] [2023-11-12 02:07:07,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:07,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:07,774 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 72 proven. 14 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-12 02:07:07,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:07,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859379676] [2023-11-12 02:07:07,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859379676] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:07,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620729829] [2023-11-12 02:07:07,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:07,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:07,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:07,776 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:07,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-12 02:07:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:07,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-12 02:07:07,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:08,033 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 52 proven. 38 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-12 02:07:08,033 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:08,088 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 52 proven. 38 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-12 02:07:08,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620729829] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:07:08,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:07:08,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2023-11-12 02:07:08,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593625712] [2023-11-12 02:07:08,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:08,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-12 02:07:08,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:08,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-12 02:07:08,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-12 02:07:08,091 INFO L87 Difference]: Start difference. First operand 4423 states and 6153 transitions. Second operand has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 14 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:08,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:08,381 INFO L93 Difference]: Finished difference Result 2978 states and 3840 transitions. [2023-11-12 02:07:08,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-12 02:07:08,382 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 14 states have internal predecessors, (90), 0 states have call successors, (0), 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 63 [2023-11-12 02:07:08,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:08,396 INFO L225 Difference]: With dead ends: 2978 [2023-11-12 02:07:08,397 INFO L226 Difference]: Without dead ends: 2978 [2023-11-12 02:07:08,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2023-11-12 02:07:08,398 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 338 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:08,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 1560 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:07:08,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2023-11-12 02:07:08,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 2863. [2023-11-12 02:07:08,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2863 states, 2852 states have (on average 1.3131136044880785) internal successors, (3745), 2862 states have internal predecessors, (3745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:08,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2863 states to 2863 states and 3745 transitions. [2023-11-12 02:07:08,463 INFO L78 Accepts]: Start accepts. Automaton has 2863 states and 3745 transitions. Word has length 63 [2023-11-12 02:07:08,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:08,463 INFO L495 AbstractCegarLoop]: Abstraction has 2863 states and 3745 transitions. [2023-11-12 02:07:08,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 14 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:08,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2863 states and 3745 transitions. [2023-11-12 02:07:08,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-12 02:07:08,465 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:08,465 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:08,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:08,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:08,672 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:07:08,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:08,672 INFO L85 PathProgramCache]: Analyzing trace with hash 965172541, now seen corresponding path program 1 times [2023-11-12 02:07:08,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:08,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089042915] [2023-11-12 02:07:08,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:08,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:08,804 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 33 proven. 47 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-12 02:07:08,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:08,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089042915] [2023-11-12 02:07:08,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089042915] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:08,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329574632] [2023-11-12 02:07:08,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:08,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:08,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:08,809 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:08,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-12 02:07:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:08,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:07:08,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:09,030 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 33 proven. 47 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-12 02:07:09,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:09,105 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 33 proven. 47 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-12 02:07:09,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329574632] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:07:09,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:07:09,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2023-11-12 02:07:09,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757764399] [2023-11-12 02:07:09,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:09,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:07:09,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:09,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:07:09,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:07:09,109 INFO L87 Difference]: Start difference. First operand 2863 states and 3745 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:09,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:09,203 INFO L93 Difference]: Finished difference Result 2859 states and 3714 transitions. [2023-11-12 02:07:09,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:07:09,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-11-12 02:07:09,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:09,225 INFO L225 Difference]: With dead ends: 2859 [2023-11-12 02:07:09,225 INFO L226 Difference]: Without dead ends: 2859 [2023-11-12 02:07:09,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:07:09,226 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 108 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:09,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 253 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:07:09,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2859 states. [2023-11-12 02:07:09,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2859 to 2852. [2023-11-12 02:07:09,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2852 states, 2841 states have (on average 1.30658218936994) internal successors, (3712), 2851 states have internal predecessors, (3712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:09,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2852 states to 2852 states and 3712 transitions. [2023-11-12 02:07:09,299 INFO L78 Accepts]: Start accepts. Automaton has 2852 states and 3712 transitions. Word has length 64 [2023-11-12 02:07:09,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:09,299 INFO L495 AbstractCegarLoop]: Abstraction has 2852 states and 3712 transitions. [2023-11-12 02:07:09,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:09,300 INFO L276 IsEmpty]: Start isEmpty. Operand 2852 states and 3712 transitions. [2023-11-12 02:07:09,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-12 02:07:09,301 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:09,301 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:09,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:09,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:09,508 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:07:09,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:09,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1737502264, now seen corresponding path program 1 times [2023-11-12 02:07:09,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:09,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150826630] [2023-11-12 02:07:09,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:09,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:09,692 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 89 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-12 02:07:09,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:09,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150826630] [2023-11-12 02:07:09,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150826630] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:09,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18281837] [2023-11-12 02:07:09,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:09,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:09,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:09,695 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:09,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-12 02:07:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:09,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-12 02:07:09,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:09,901 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-12 02:07:09,901 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:09,958 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 97 proven. 13 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-12 02:07:09,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18281837] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:07:09,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:07:09,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 11 [2023-11-12 02:07:09,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594851327] [2023-11-12 02:07:09,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:09,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 02:07:09,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:09,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 02:07:09,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:07:09,961 INFO L87 Difference]: Start difference. First operand 2852 states and 3712 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:10,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:10,196 INFO L93 Difference]: Finished difference Result 2895 states and 3710 transitions. [2023-11-12 02:07:10,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-12 02:07:10,197 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-11-12 02:07:10,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:10,231 INFO L225 Difference]: With dead ends: 2895 [2023-11-12 02:07:10,231 INFO L226 Difference]: Without dead ends: 2895 [2023-11-12 02:07:10,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2023-11-12 02:07:10,232 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 116 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:10,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 820 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:07:10,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2023-11-12 02:07:10,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 2134. [2023-11-12 02:07:10,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2134 states, 2123 states have (on average 1.3028732925105981) internal successors, (2766), 2133 states have internal predecessors, (2766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:10,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2134 states to 2134 states and 2766 transitions. [2023-11-12 02:07:10,278 INFO L78 Accepts]: Start accepts. Automaton has 2134 states and 2766 transitions. Word has length 65 [2023-11-12 02:07:10,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:10,279 INFO L495 AbstractCegarLoop]: Abstraction has 2134 states and 2766 transitions. [2023-11-12 02:07:10,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:10,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2134 states and 2766 transitions. [2023-11-12 02:07:10,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-12 02:07:10,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:10,285 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 5, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:10,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:10,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:10,492 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:07:10,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:10,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1937207539, now seen corresponding path program 1 times [2023-11-12 02:07:10,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:10,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400268522] [2023-11-12 02:07:10,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:10,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:10,744 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-12 02:07:10,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:10,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400268522] [2023-11-12 02:07:10,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400268522] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:10,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903422691] [2023-11-12 02:07:10,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:10,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:10,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:10,747 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:10,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-12 02:07:10,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:10,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-12 02:07:10,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:10,931 INFO L351 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 [2023-11-12 02:07:11,192 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-12 02:07:11,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:11,544 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-12 02:07:11,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903422691] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:07:11,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:07:11,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-12 02:07:11,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147675016] [2023-11-12 02:07:11,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:11,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 02:07:11,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:11,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 02:07:11,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:07:11,547 INFO L87 Difference]: Start difference. First operand 2134 states and 2766 transitions. Second operand has 11 states, 10 states have (on average 11.4) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:12,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:12,089 INFO L93 Difference]: Finished difference Result 4138 states and 5264 transitions. [2023-11-12 02:07:12,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:07:12,090 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 11.4) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-11-12 02:07:12,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:12,099 INFO L225 Difference]: With dead ends: 4138 [2023-11-12 02:07:12,099 INFO L226 Difference]: Without dead ends: 4138 [2023-11-12 02:07:12,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2023-11-12 02:07:12,100 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 328 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:12,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 694 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 02:07:12,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4138 states. [2023-11-12 02:07:12,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4138 to 3100. [2023-11-12 02:07:12,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3100 states, 3089 states have (on average 1.3149886694723212) internal successors, (4062), 3099 states have internal predecessors, (4062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:12,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 4062 transitions. [2023-11-12 02:07:12,181 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 4062 transitions. Word has length 69 [2023-11-12 02:07:12,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:12,181 INFO L495 AbstractCegarLoop]: Abstraction has 3100 states and 4062 transitions. [2023-11-12 02:07:12,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 11.4) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:12,182 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 4062 transitions. [2023-11-12 02:07:12,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-12 02:07:12,184 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:12,184 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 8, 6, 6, 5, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:12,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:12,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:12,391 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:07:12,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:12,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1779624174, now seen corresponding path program 1 times [2023-11-12 02:07:12,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:12,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591051895] [2023-11-12 02:07:12,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:12,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:12,625 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-11-12 02:07:12,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:12,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591051895] [2023-11-12 02:07:12,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591051895] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:12,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569834436] [2023-11-12 02:07:12,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:12,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:12,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:12,628 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:12,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-12 02:07:12,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:12,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-12 02:07:12,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:12,937 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 29 proven. 65 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-11-12 02:07:12,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:13,044 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 29 proven. 65 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-11-12 02:07:13,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569834436] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:07:13,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:07:13,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2023-11-12 02:07:13,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287014985] [2023-11-12 02:07:13,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:13,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-12 02:07:13,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:13,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-12 02:07:13,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:07:13,047 INFO L87 Difference]: Start difference. First operand 3100 states and 4062 transitions. Second operand has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 12 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:13,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:13,352 INFO L93 Difference]: Finished difference Result 4963 states and 6180 transitions. [2023-11-12 02:07:13,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-12 02:07:13,361 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 12 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-11-12 02:07:13,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:13,377 INFO L225 Difference]: With dead ends: 4963 [2023-11-12 02:07:13,378 INFO L226 Difference]: Without dead ends: 4963 [2023-11-12 02:07:13,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=670, Unknown=0, NotChecked=0, Total=870 [2023-11-12 02:07:13,379 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 378 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:13,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 987 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:07:13,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4963 states. [2023-11-12 02:07:13,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4963 to 4345. [2023-11-12 02:07:13,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4345 states, 4335 states have (on average 1.26320645905421) internal successors, (5476), 4344 states have internal predecessors, (5476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:13,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4345 states to 4345 states and 5476 transitions. [2023-11-12 02:07:13,471 INFO L78 Accepts]: Start accepts. Automaton has 4345 states and 5476 transitions. Word has length 88 [2023-11-12 02:07:13,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:13,472 INFO L495 AbstractCegarLoop]: Abstraction has 4345 states and 5476 transitions. [2023-11-12 02:07:13,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 12 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:13,472 INFO L276 IsEmpty]: Start isEmpty. Operand 4345 states and 5476 transitions. [2023-11-12 02:07:13,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-12 02:07:13,475 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:13,475 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 9, 6, 6, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:13,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:13,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:13,682 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:07:13,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:13,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1011471400, now seen corresponding path program 1 times [2023-11-12 02:07:13,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:13,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085086978] [2023-11-12 02:07:13,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:13,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:07:13,722 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:07:13,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:07:13,802 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:07:13,802 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:07:13,803 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK (19 of 20 remaining) [2023-11-12 02:07:13,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 20 remaining) [2023-11-12 02:07:13,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 20 remaining) [2023-11-12 02:07:13,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 20 remaining) [2023-11-12 02:07:13,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 20 remaining) [2023-11-12 02:07:13,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 20 remaining) [2023-11-12 02:07:13,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 20 remaining) [2023-11-12 02:07:13,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 20 remaining) [2023-11-12 02:07:13,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 20 remaining) [2023-11-12 02:07:13,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 20 remaining) [2023-11-12 02:07:13,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 20 remaining) [2023-11-12 02:07:13,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 20 remaining) [2023-11-12 02:07:13,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 20 remaining) [2023-11-12 02:07:13,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 20 remaining) [2023-11-12 02:07:13,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 20 remaining) [2023-11-12 02:07:13,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 20 remaining) [2023-11-12 02:07:13,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 20 remaining) [2023-11-12 02:07:13,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE (2 of 20 remaining) [2023-11-12 02:07:13,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE (1 of 20 remaining) [2023-11-12 02:07:13,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE (0 of 20 remaining) [2023-11-12 02:07:13,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-12 02:07:13,817 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:13,822 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 02:07:13,899 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated [2023-11-12 02:07:13,900 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated [2023-11-12 02:07:13,901 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-12 02:07:13,901 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-12 02:07:13,901 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-12 02:07:13,902 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-12 02:07:13,902 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated [2023-11-12 02:07:13,902 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-12 02:07:13,903 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-12 02:07:13,904 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-12 02:07:13,904 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-12 02:07:13,905 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated [2023-11-12 02:07:13,911 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-12 02:07:13,912 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-12 02:07:13,912 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated [2023-11-12 02:07:13,913 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-12 02:07:13,913 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-12 02:07:13,914 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-12 02:07:13,914 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-12 02:07:13,915 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated [2023-11-12 02:07:13,915 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-12 02:07:13,916 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-12 02:07:13,916 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-12 02:07:13,916 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-12 02:07:13,917 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated [2023-11-12 02:07:13,917 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-12 02:07:13,917 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-12 02:07:13,922 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated [2023-11-12 02:07:13,923 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch7 could not be translated [2023-11-12 02:07:13,923 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-12 02:07:13,924 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated [2023-11-12 02:07:13,925 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-12 02:07:13,925 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch7 could not be translated [2023-11-12 02:07:13,926 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-12 02:07:13,927 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch7 could not be translated [2023-11-12 02:07:13,928 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated [2023-11-12 02:07:13,929 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch7 could not be translated [2023-11-12 02:07:13,929 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-12 02:07:13,929 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem8 [2023-11-12 02:07:13,929 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-12 02:07:13,930 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch7 could not be translated [2023-11-12 02:07:13,930 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated [2023-11-12 02:07:13,933 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch7 could not be translated [2023-11-12 02:07:13,934 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-12 02:07:13,934 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch7 could not be translated [2023-11-12 02:07:13,934 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-12 02:07:13,934 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated [2023-11-12 02:07:13,935 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated [2023-11-12 02:07:13,954 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:07:13 BoogieIcfgContainer [2023-11-12 02:07:13,954 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 02:07:13,955 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:07:13,955 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:07:13,955 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:07:13,956 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:06:55" (3/4) ... [2023-11-12 02:07:13,961 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-12 02:07:13,978 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:07:13,979 INFO L158 Benchmark]: Toolchain (without parser) took 19643.41ms. Allocated memory was 136.3MB in the beginning and 285.2MB in the end (delta: 148.9MB). Free memory was 94.1MB in the beginning and 239.3MB in the end (delta: -145.2MB). Peak memory consumption was 138.1MB. Max. memory is 16.1GB. [2023-11-12 02:07:13,979 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 100.7MB. Free memory is still 49.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:07:13,979 INFO L158 Benchmark]: CACSL2BoogieTranslator took 504.40ms. Allocated memory is still 136.3MB. Free memory was 94.1MB in the beginning and 76.6MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-12 02:07:13,980 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.00ms. Allocated memory is still 136.3MB. Free memory was 76.6MB in the beginning and 74.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:07:13,980 INFO L158 Benchmark]: Boogie Preprocessor took 82.65ms. Allocated memory is still 136.3MB. Free memory was 74.5MB in the beginning and 72.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:07:13,980 INFO L158 Benchmark]: RCFGBuilder took 631.18ms. Allocated memory is still 136.3MB. Free memory was 72.8MB in the beginning and 93.3MB in the end (delta: -20.5MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. [2023-11-12 02:07:13,981 INFO L158 Benchmark]: TraceAbstraction took 18331.68ms. Allocated memory was 136.3MB in the beginning and 237.0MB in the end (delta: 100.7MB). Free memory was 92.6MB in the beginning and 61.6MB in the end (delta: 31.0MB). Peak memory consumption was 131.0MB. Max. memory is 16.1GB. [2023-11-12 02:07:13,981 INFO L158 Benchmark]: Witness Printer took 23.20ms. Allocated memory was 237.0MB in the beginning and 285.2MB in the end (delta: 48.2MB). Free memory was 61.6MB in the beginning and 239.3MB in the end (delta: -177.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 02:07:13,983 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 100.7MB. Free memory is still 49.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 504.40ms. Allocated memory is still 136.3MB. Free memory was 94.1MB in the beginning and 76.6MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.00ms. Allocated memory is still 136.3MB. Free memory was 76.6MB in the beginning and 74.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 82.65ms. Allocated memory is still 136.3MB. Free memory was 74.5MB in the beginning and 72.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 631.18ms. Allocated memory is still 136.3MB. Free memory was 72.8MB in the beginning and 93.3MB in the end (delta: -20.5MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. * TraceAbstraction took 18331.68ms. Allocated memory was 136.3MB in the beginning and 237.0MB in the end (delta: 100.7MB). Free memory was 92.6MB in the beginning and 61.6MB in the end (delta: 31.0MB). Peak memory consumption was 131.0MB. Max. memory is 16.1GB. * Witness Printer took 23.20ms. Allocated memory was 237.0MB in the beginning and 285.2MB in the end (delta: 48.2MB). Free memory was 61.6MB in the beginning and 239.3MB in the end (delta: -177.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem8 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 592]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 592. Possible FailurePath: [L528] struct cell *S; [L529] int pc1 = 1; [L530] int pc4 = 1; [L531] static struct cell *t1 = ((void *)0); [L532] static struct cell *x1 = ((void *)0); [L561] struct cell* garbage; [L562] static struct cell *t4 = ((void *)0); [L563] static struct cell *x4 = ((void *)0); [L566] static int res4; VAL [S={0:0}, garbage={0:0}, pc1=1, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L594] S || 1 != pc1 || __VERIFIER_nondet_int() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={0:0}, garbage={0:0}, pc1=1, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L537] x1 = malloc(sizeof(*x1)) [L538] x1->data = 0 VAL [S={0:0}, garbage={0:0}, pc1=2, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L539] x1->next = ((void *)0) VAL [S={0:0}, garbage={0:0}, pc1=2, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={0:0}, garbage={0:0}, pc1=2, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L541] case 2: VAL [S={0:0}, garbage={0:0}, pc1=3, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L542] x1->data = 4 VAL [S={0:0}, garbage={0:0}, pc1=3, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={0:0}, garbage={0:0}, pc1=3, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L541] case 2: [L544] case 3: [L545] t1 = S VAL [S={0:0}, garbage={0:0}, pc1=4, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={0:0}, garbage={0:0}, pc1=4, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L541] case 2: [L544] case 3: [L547] case 4: VAL [S={0:0}, garbage={0:0}, pc1=5, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L548] x1->next = t1 VAL [S={0:0}, garbage={0:0}, pc1=5, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={0:0}, garbage={0:0}, pc1=5, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L541] case 2: [L544] case 3: [L547] case 4: [L550] case 5: VAL [S={0:0}, garbage={0:0}, pc1=6, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L551] COND TRUE S == t1 [L552] S = x1 VAL [S={-2:0}, garbage={0:0}, pc1=6, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={-2:0}, garbage={0:0}, pc1=6, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L541] case 2: [L544] case 3: [L547] case 4: [L550] case 5: [L556] case 6: [L557] pc1 = 1 VAL [S={-2:0}, garbage={0:0}, pc1=1, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={-2:0}, garbage={0:0}, pc1=1, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND FALSE !(__VERIFIER_nondet_int()) [L598] CALL pop() [L567] pc4++ [L568] case 1: [L569] t4 = S VAL [S={-2:0}, garbage={0:0}, pc1=1, pc4=2, res4=0, t1={0:0}, t4={-2:0}, x1={-2:0}, x4={0:0}] [L598] RET pop() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={-2:0}, garbage={0:0}, pc1=1, pc4=2, res4=0, t1={0:0}, t4={-2:0}, x1={-2:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND FALSE !(__VERIFIER_nondet_int()) [L598] CALL pop() [L567] pc4++ [L568] case 1: [L571] case 2: VAL [S={-2:0}, garbage={0:0}, pc1=1, pc4=3, res4=0, t1={0:0}, t4={-2:0}, x1={-2:0}, x4={0:0}] [L572] COND FALSE !(t4 == ((void *)0)) VAL [S={-2:0}, garbage={0:0}, pc1=1, pc4=3, res4=0, t1={0:0}, t4={-2:0}, x1={-2:0}, x4={0:0}] [L598] RET pop() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={-2:0}, garbage={0:0}, pc1=1, pc4=3, res4=0, t1={0:0}, t4={-2:0}, x1={-2:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND FALSE !(__VERIFIER_nondet_int()) [L598] CALL pop() [L567] pc4++ [L568] case 1: [L571] case 2: [L575] case 3: VAL [S={-2:0}, garbage={0:0}, pc1=1, pc4=4, res4=0, t1={0:0}, t4={-2:0}, x1={-2:0}, x4={0:0}] [L576] EXPR t4->next VAL [S={-2:0}, garbage={0:0}, pc1=1, pc4=4, res4=0, t1={0:0}, t4={-2:0}, x1={-2:0}, x4={0:0}] [L576] x4 = t4->next [L598] RET pop() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={-2:0}, garbage={0:0}, pc1=1, pc4=4, res4=0, t1={0:0}, t4={-2:0}, x1={-2:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND FALSE !(__VERIFIER_nondet_int()) [L598] CALL pop() [L567] pc4++ [L568] case 1: [L571] case 2: [L575] case 3: [L578] case 4: VAL [S={-2:0}, garbage={0:0}, pc1=1, pc4=5, res4=0, t1={0:0}, t4={-2:0}, x1={-2:0}, x4={0:0}] [L579] COND TRUE S == t4 [L580] S = x4 VAL [S={0:0}, garbage={0:0}, pc1=1, pc4=5, res4=0, t1={0:0}, t4={-2:0}, x1={-2:0}, x4={0:0}] [L598] RET pop() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={0:0}, garbage={0:0}, pc1=1, pc4=5, res4=0, t1={0:0}, t4={-2:0}, x1={-2:0}, x4={0:0}] [L594] COND FALSE !(S || 1 != pc1 || __VERIFIER_nondet_int()) [L600] COND FALSE !(\read(*garbage)) VAL [S={0:0}, garbage={0:0}, pc1=1, pc4=5, res4=0, t1={0:0}, t4={-2:0}, x1={-2:0}, x4={0:0}] [L605] S = ((void *)0) [L606] t1 = ((void *)0) [L607] x1 = ((void *)0) [L608] t4 = ((void *)0) [L609] x4 = ((void *)0) [L610] return !!garbage; VAL [S={0:0}, \result=0, garbage={0:0}, pc1=1, pc4=5, res4=0, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 64 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 18.1s, OverallIterations: 25, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4061 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4061 mSDsluCounter, 10365 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8047 mSDsCounter, 305 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2408 IncrementalHoareTripleChecker+Invalid, 2713 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 305 mSolverCounterUnsat, 2318 mSDtfsCounter, 2408 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1727 GetRequests, 1414 SyntacticMatches, 14 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1949 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4623occurred in iteration=18, InterpolantAutomatonStates: 276, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 24 MinimizatonAttempts, 9185 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 1594 NumberOfCodeBlocks, 1594 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 2155 ConstructedInterpolants, 0 QuantifiedInterpolants, 6524 SizeOfPredicates, 62 NumberOfNonLiveVariables, 3209 ConjunctsInSsa, 146 ConjunctsInUnsatCore, 54 InterpolantComputations, 10 PerfectInterpolantSequences, 2892/3753 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-12 02:07:14,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/lockfree-3.3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl --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 1db117ae3c729419255b5da4a7f4ecd64b2d99a167d11f22266a773c4ff13cdb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:07:16,905 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:07:17,035 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-12 02:07:17,043 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:07:17,060 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:07:17,094 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:07:17,095 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:07:17,096 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:07:17,097 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:07:17,098 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:07:17,099 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:07:17,099 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:07:17,100 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:07:17,101 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:07:17,101 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:07:17,102 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:07:17,102 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:07:17,103 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:07:17,104 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:07:17,104 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:07:17,105 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:07:17,105 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:07:17,106 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:07:17,106 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 02:07:17,107 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 02:07:17,107 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:07:17,108 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:07:17,108 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:07:17,109 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:07:17,109 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:07:17,110 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:07:17,110 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:07:17,111 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:07:17,111 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:07:17,111 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-12 02:07:17,112 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 02:07:17,112 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:07:17,112 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:07:17,113 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:07:17,113 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-12 02:07:17,113 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:07:17,114 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1db117ae3c729419255b5da4a7f4ecd64b2d99a167d11f22266a773c4ff13cdb [2023-11-12 02:07:17,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:07:17,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:07:17,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:07:17,588 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:07:17,589 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:07:17,590 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/memsafety/lockfree-3.3.i [2023-11-12 02:07:20,840 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:07:21,190 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:07:21,191 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/sv-benchmarks/c/memsafety/lockfree-3.3.i [2023-11-12 02:07:21,208 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/data/425164ec7/42c1e55b05a14523a3aeddac87e037ad/FLAG12ac758e1 [2023-11-12 02:07:21,229 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/data/425164ec7/42c1e55b05a14523a3aeddac87e037ad [2023-11-12 02:07:21,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:07:21,240 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:07:21,245 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:07:21,245 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:07:21,251 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:07:21,252 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:07:21" (1/1) ... [2023-11-12 02:07:21,254 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@455ceab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:21, skipping insertion in model container [2023-11-12 02:07:21,254 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:07:21" (1/1) ... [2023-11-12 02:07:21,330 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:07:21,735 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:07:21,757 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:07:21,820 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:07:21,897 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:07:21,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:21 WrapperNode [2023-11-12 02:07:21,898 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:07:21,899 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:07:21,900 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:07:21,900 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:07:21,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:21" (1/1) ... [2023-11-12 02:07:21,940 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:21" (1/1) ... [2023-11-12 02:07:21,972 INFO L138 Inliner]: procedures = 128, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 126 [2023-11-12 02:07:21,974 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:07:21,976 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:07:21,976 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:07:21,976 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:07:21,995 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:21" (1/1) ... [2023-11-12 02:07:21,995 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:21" (1/1) ... [2023-11-12 02:07:22,021 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:21" (1/1) ... [2023-11-12 02:07:22,021 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:21" (1/1) ... [2023-11-12 02:07:22,032 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:21" (1/1) ... [2023-11-12 02:07:22,045 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:21" (1/1) ... [2023-11-12 02:07:22,048 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:21" (1/1) ... [2023-11-12 02:07:22,059 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:21" (1/1) ... [2023-11-12 02:07:22,063 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:07:22,064 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:07:22,065 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:07:22,065 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:07:22,066 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:21" (1/1) ... [2023-11-12 02:07:22,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:07:22,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:22,115 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:07:22,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:07:22,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-12 02:07:22,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:07:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:07:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 02:07:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 02:07:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:07:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-12 02:07:22,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 02:07:22,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:07:22,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:07:22,356 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:07:22,359 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:07:22,838 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:07:22,845 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:07:22,845 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 02:07:22,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:07:22 BoogieIcfgContainer [2023-11-12 02:07:22,850 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:07:22,853 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:07:22,854 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:07:22,858 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:07:22,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:07:21" (1/3) ... [2023-11-12 02:07:22,859 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be05ebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:07:22, skipping insertion in model container [2023-11-12 02:07:22,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:21" (2/3) ... [2023-11-12 02:07:22,862 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be05ebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:07:22, skipping insertion in model container [2023-11-12 02:07:22,862 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:07:22" (3/3) ... [2023-11-12 02:07:22,864 INFO L112 eAbstractionObserver]: Analyzing ICFG lockfree-3.3.i [2023-11-12 02:07:22,886 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:07:22,886 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-11-12 02:07:22,949 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:07:22,957 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@619deeb3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:07:22,959 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-12 02:07:22,964 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 43 states have (on average 1.930232558139535) internal successors, (83), 63 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:22,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 02:07:22,971 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:22,974 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:07:22,975 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:07:22,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:22,983 INFO L85 PathProgramCache]: Analyzing trace with hash 28819106, now seen corresponding path program 1 times [2023-11-12 02:07:22,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:07:22,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1164266135] [2023-11-12 02:07:22,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:23,000 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:23,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:07:23,009 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 02:07:23,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-12 02:07:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:23,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 02:07:23,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:23,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:23,175 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:23,176 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:07:23,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1164266135] [2023-11-12 02:07:23,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1164266135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:23,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:23,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:07:23,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966034346] [2023-11-12 02:07:23,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:23,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:07:23,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:07:23,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:07:23,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:07:23,234 INFO L87 Difference]: Start difference. First operand has 64 states, 43 states have (on average 1.930232558139535) internal successors, (83), 63 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:23,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:23,262 INFO L93 Difference]: Finished difference Result 64 states and 81 transitions. [2023-11-12 02:07:23,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:07:23,265 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-12 02:07:23,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:23,277 INFO L225 Difference]: With dead ends: 64 [2023-11-12 02:07:23,277 INFO L226 Difference]: Without dead ends: 62 [2023-11-12 02:07:23,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:07:23,284 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:23,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:07:23,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-12 02:07:23,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-11-12 02:07:23,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 42 states have (on average 1.880952380952381) internal successors, (79), 61 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:23,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 79 transitions. [2023-11-12 02:07:23,336 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 79 transitions. Word has length 5 [2023-11-12 02:07:23,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:23,337 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 79 transitions. [2023-11-12 02:07:23,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:23,338 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 79 transitions. [2023-11-12 02:07:23,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-12 02:07:23,339 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:23,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:23,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:23,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:23,551 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:07:23,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:23,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1806851052, now seen corresponding path program 1 times [2023-11-12 02:07:23,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:07:23,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060070355] [2023-11-12 02:07:23,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:23,553 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:23,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:07:23,585 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 02:07:23,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-12 02:07:23,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:23,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:07:23,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:23,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:23,783 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:23,784 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:07:23,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060070355] [2023-11-12 02:07:23,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060070355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:23,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:23,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:07:23,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875815845] [2023-11-12 02:07:23,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:23,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:07:23,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:07:23,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:07:23,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:07:23,794 INFO L87 Difference]: Start difference. First operand 62 states and 79 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:23,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:23,938 INFO L93 Difference]: Finished difference Result 101 states and 127 transitions. [2023-11-12 02:07:23,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:07:23,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-12 02:07:23,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:23,947 INFO L225 Difference]: With dead ends: 101 [2023-11-12 02:07:23,948 INFO L226 Difference]: Without dead ends: 101 [2023-11-12 02:07:23,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:07:23,954 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 45 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:23,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 209 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:07:23,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-12 02:07:23,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 81. [2023-11-12 02:07:23,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 61 states have (on average 1.8524590163934427) internal successors, (113), 80 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:23,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 113 transitions. [2023-11-12 02:07:23,983 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 113 transitions. Word has length 7 [2023-11-12 02:07:23,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:23,984 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 113 transitions. [2023-11-12 02:07:23,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:23,984 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 113 transitions. [2023-11-12 02:07:23,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-12 02:07:23,985 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:23,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:24,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:24,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:24,204 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:07:24,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:24,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1806910634, now seen corresponding path program 1 times [2023-11-12 02:07:24,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:07:24,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153072118] [2023-11-12 02:07:24,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:24,214 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:24,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:07:24,215 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 02:07:24,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-12 02:07:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:24,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:07:24,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:24,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:24,349 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:24,350 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:07:24,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153072118] [2023-11-12 02:07:24,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [153072118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:24,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:24,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:07:24,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113709013] [2023-11-12 02:07:24,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:24,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:24,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:07:24,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:24,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:07:24,354 INFO L87 Difference]: Start difference. First operand 81 states and 113 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:24,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:24,426 INFO L93 Difference]: Finished difference Result 147 states and 211 transitions. [2023-11-12 02:07:24,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:24,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-12 02:07:24,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:24,430 INFO L225 Difference]: With dead ends: 147 [2023-11-12 02:07:24,430 INFO L226 Difference]: Without dead ends: 147 [2023-11-12 02:07:24,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:07:24,432 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 62 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:24,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 138 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:07:24,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-11-12 02:07:24,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 125. [2023-11-12 02:07:24,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 105 states have (on average 1.8571428571428572) internal successors, (195), 124 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:24,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 195 transitions. [2023-11-12 02:07:24,445 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 195 transitions. Word has length 7 [2023-11-12 02:07:24,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:24,446 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 195 transitions. [2023-11-12 02:07:24,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:24,446 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 195 transitions. [2023-11-12 02:07:24,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 02:07:24,447 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:24,447 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:24,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:24,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:24,659 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:07:24,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:24,660 INFO L85 PathProgramCache]: Analyzing trace with hash 179653412, now seen corresponding path program 1 times [2023-11-12 02:07:24,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:07:24,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2128302216] [2023-11-12 02:07:24,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:24,661 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:24,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:07:24,662 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 02:07:24,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-12 02:07:24,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:24,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:07:24,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:24,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:24,737 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:24,737 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:07:24,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2128302216] [2023-11-12 02:07:24,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2128302216] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:24,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:24,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:07:24,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350818461] [2023-11-12 02:07:24,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:24,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:24,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:07:24,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:24,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:07:24,744 INFO L87 Difference]: Start difference. First operand 125 states and 195 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:24,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:24,895 INFO L93 Difference]: Finished difference Result 205 states and 315 transitions. [2023-11-12 02:07:24,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:24,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-12 02:07:24,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:24,898 INFO L225 Difference]: With dead ends: 205 [2023-11-12 02:07:24,898 INFO L226 Difference]: Without dead ends: 202 [2023-11-12 02:07:24,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:07:24,899 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 63 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:24,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 121 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:07:24,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-11-12 02:07:24,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 182. [2023-11-12 02:07:24,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 162 states have (on average 1.8518518518518519) internal successors, (300), 181 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:24,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 300 transitions. [2023-11-12 02:07:24,928 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 300 transitions. Word has length 8 [2023-11-12 02:07:24,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:24,928 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 300 transitions. [2023-11-12 02:07:24,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:24,929 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 300 transitions. [2023-11-12 02:07:24,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 02:07:24,930 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:24,930 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:24,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:25,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:25,142 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:07:25,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:25,143 INFO L85 PathProgramCache]: Analyzing trace with hash 179596397, now seen corresponding path program 1 times [2023-11-12 02:07:25,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:07:25,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2037349515] [2023-11-12 02:07:25,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:25,144 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:25,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:07:25,145 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 02:07:25,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-12 02:07:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:25,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:07:25,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:25,245 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-12 02:07:25,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:25,253 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:25,253 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:07:25,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2037349515] [2023-11-12 02:07:25,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2037349515] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:25,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:25,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:07:25,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707201172] [2023-11-12 02:07:25,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:25,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:25,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:07:25,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:25,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:07:25,256 INFO L87 Difference]: Start difference. First operand 182 states and 300 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:25,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:25,419 INFO L93 Difference]: Finished difference Result 257 states and 407 transitions. [2023-11-12 02:07:25,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:25,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-12 02:07:25,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:25,421 INFO L225 Difference]: With dead ends: 257 [2023-11-12 02:07:25,421 INFO L226 Difference]: Without dead ends: 257 [2023-11-12 02:07:25,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:07:25,423 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 67 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:25,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 171 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:07:25,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-11-12 02:07:25,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 236. [2023-11-12 02:07:25,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 218 states have (on average 1.8027522935779816) internal successors, (393), 235 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:25,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 393 transitions. [2023-11-12 02:07:25,456 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 393 transitions. Word has length 8 [2023-11-12 02:07:25,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:25,456 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 393 transitions. [2023-11-12 02:07:25,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:25,456 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 393 transitions. [2023-11-12 02:07:25,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 02:07:25,457 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:25,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:25,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:25,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:25,671 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:07:25,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:25,672 INFO L85 PathProgramCache]: Analyzing trace with hash 179596398, now seen corresponding path program 1 times [2023-11-12 02:07:25,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:07:25,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1560532406] [2023-11-12 02:07:25,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:25,673 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:25,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:07:25,674 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 02:07:25,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-12 02:07:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:25,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:07:25,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:25,753 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 02:07:25,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:25,764 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:25,764 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:07:25,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1560532406] [2023-11-12 02:07:25,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1560532406] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:25,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:25,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:07:25,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55286288] [2023-11-12 02:07:25,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:25,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:25,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:07:25,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:25,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:07:25,768 INFO L87 Difference]: Start difference. First operand 236 states and 393 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:25,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:25,929 INFO L93 Difference]: Finished difference Result 252 states and 398 transitions. [2023-11-12 02:07:25,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:25,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-12 02:07:25,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:25,932 INFO L225 Difference]: With dead ends: 252 [2023-11-12 02:07:25,932 INFO L226 Difference]: Without dead ends: 252 [2023-11-12 02:07:25,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:07:25,933 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 66 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:25,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 179 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:07:25,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-11-12 02:07:25,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 234. [2023-11-12 02:07:25,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 218 states have (on average 1.7660550458715596) internal successors, (385), 233 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:25,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 385 transitions. [2023-11-12 02:07:25,945 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 385 transitions. Word has length 8 [2023-11-12 02:07:25,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:25,946 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 385 transitions. [2023-11-12 02:07:25,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:25,946 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 385 transitions. [2023-11-12 02:07:25,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 02:07:25,947 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:25,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:25,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:26,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:26,165 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:07:26,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:26,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1272529015, now seen corresponding path program 1 times [2023-11-12 02:07:26,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:07:26,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149932787] [2023-11-12 02:07:26,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:26,167 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:26,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:07:26,168 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 02:07:26,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-12 02:07:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:26,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:07:26,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:26,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:26,241 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:26,241 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:07:26,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1149932787] [2023-11-12 02:07:26,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1149932787] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:26,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:26,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:07:26,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858020195] [2023-11-12 02:07:26,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:26,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:07:26,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:07:26,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:07:26,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:07:26,244 INFO L87 Difference]: Start difference. First operand 234 states and 385 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:26,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:26,289 INFO L93 Difference]: Finished difference Result 215 states and 325 transitions. [2023-11-12 02:07:26,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:07:26,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-12 02:07:26,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:26,291 INFO L225 Difference]: With dead ends: 215 [2023-11-12 02:07:26,292 INFO L226 Difference]: Without dead ends: 215 [2023-11-12 02:07:26,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:07:26,293 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 53 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:26,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 192 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:07:26,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-11-12 02:07:26,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 190. [2023-11-12 02:07:26,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 178 states have (on average 1.7191011235955056) internal successors, (306), 189 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:26,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 306 transitions. [2023-11-12 02:07:26,300 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 306 transitions. Word has length 9 [2023-11-12 02:07:26,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:26,300 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 306 transitions. [2023-11-12 02:07:26,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:26,301 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 306 transitions. [2023-11-12 02:07:26,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-12 02:07:26,301 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:26,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:26,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:26,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:26,513 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:07:26,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:26,513 INFO L85 PathProgramCache]: Analyzing trace with hash 845049582, now seen corresponding path program 1 times [2023-11-12 02:07:26,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:07:26,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217501947] [2023-11-12 02:07:26,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:26,514 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:26,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:07:26,517 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 02:07:26,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-12 02:07:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:26,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:07:26,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:26,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:26,587 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:26,588 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:07:26,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217501947] [2023-11-12 02:07:26,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217501947] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:26,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:26,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:07:26,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777970807] [2023-11-12 02:07:26,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:26,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:07:26,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:07:26,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:07:26,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:07:26,590 INFO L87 Difference]: Start difference. First operand 190 states and 306 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:26,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:26,641 INFO L93 Difference]: Finished difference Result 292 states and 442 transitions. [2023-11-12 02:07:26,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:07:26,642 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-12 02:07:26,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:26,644 INFO L225 Difference]: With dead ends: 292 [2023-11-12 02:07:26,644 INFO L226 Difference]: Without dead ends: 292 [2023-11-12 02:07:26,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:07:26,645 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 55 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:26,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 176 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:07:26,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-11-12 02:07:26,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 268. [2023-11-12 02:07:26,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 256 states have (on average 1.6328125) internal successors, (418), 267 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:26,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 418 transitions. [2023-11-12 02:07:26,658 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 418 transitions. Word has length 10 [2023-11-12 02:07:26,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:26,659 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 418 transitions. [2023-11-12 02:07:26,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:26,659 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 418 transitions. [2023-11-12 02:07:26,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-12 02:07:26,661 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:26,661 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:26,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:26,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:26,872 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:07:26,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:26,873 INFO L85 PathProgramCache]: Analyzing trace with hash 20399352, now seen corresponding path program 1 times [2023-11-12 02:07:26,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:07:26,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532780896] [2023-11-12 02:07:26,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:26,873 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:26,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:07:26,876 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 02:07:26,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-12 02:07:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:26,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:07:26,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:27,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:27,043 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:27,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:27,118 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:07:27,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532780896] [2023-11-12 02:07:27,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532780896] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:07:27,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:07:27,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-12 02:07:27,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779993277] [2023-11-12 02:07:27,119 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:27,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:07:27,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:07:27,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:07:27,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:07:27,122 INFO L87 Difference]: Start difference. First operand 268 states and 418 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:27,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:27,248 INFO L93 Difference]: Finished difference Result 573 states and 833 transitions. [2023-11-12 02:07:27,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:07:27,249 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-12 02:07:27,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:27,253 INFO L225 Difference]: With dead ends: 573 [2023-11-12 02:07:27,253 INFO L226 Difference]: Without dead ends: 573 [2023-11-12 02:07:27,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:07:27,255 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 296 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:27,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 416 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:07:27,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2023-11-12 02:07:27,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 532. [2023-11-12 02:07:27,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 520 states have (on average 1.5692307692307692) internal successors, (816), 531 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:27,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 816 transitions. [2023-11-12 02:07:27,271 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 816 transitions. Word has length 16 [2023-11-12 02:07:27,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:27,271 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 816 transitions. [2023-11-12 02:07:27,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:27,272 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 816 transitions. [2023-11-12 02:07:27,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-12 02:07:27,273 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:27,273 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:27,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:27,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:27,489 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:07:27,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:27,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1902356162, now seen corresponding path program 1 times [2023-11-12 02:07:27,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:07:27,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [42273264] [2023-11-12 02:07:27,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:27,491 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:27,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:07:27,492 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 02:07:27,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-12 02:07:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:27,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:07:27,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:27,603 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:27,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:27,635 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:27,636 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:07:27,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [42273264] [2023-11-12 02:07:27,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [42273264] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:07:27,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:07:27,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-11-12 02:07:27,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018571264] [2023-11-12 02:07:27,637 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:27,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:07:27,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:07:27,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:07:27,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:07:27,638 INFO L87 Difference]: Start difference. First operand 532 states and 816 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:27,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:27,743 INFO L93 Difference]: Finished difference Result 811 states and 1191 transitions. [2023-11-12 02:07:27,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:07:27,747 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-12 02:07:27,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:27,752 INFO L225 Difference]: With dead ends: 811 [2023-11-12 02:07:27,753 INFO L226 Difference]: Without dead ends: 811 [2023-11-12 02:07:27,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:07:27,754 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 101 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:27,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 424 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:07:27,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2023-11-12 02:07:27,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 723. [2023-11-12 02:07:27,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 711 states have (on average 1.5316455696202531) internal successors, (1089), 722 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:27,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1089 transitions. [2023-11-12 02:07:27,784 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1089 transitions. Word has length 16 [2023-11-12 02:07:27,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:27,784 INFO L495 AbstractCegarLoop]: Abstraction has 723 states and 1089 transitions. [2023-11-12 02:07:27,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:27,785 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1089 transitions. [2023-11-12 02:07:27,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-12 02:07:27,786 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:27,786 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:27,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:27,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:27,998 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:07:27,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:27,998 INFO L85 PathProgramCache]: Analyzing trace with hash 53823374, now seen corresponding path program 2 times [2023-11-12 02:07:27,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:07:27,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1192767493] [2023-11-12 02:07:27,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:07:27,999 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:28,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:07:28,001 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 02:07:28,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-12 02:07:28,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 02:07:28,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:07:28,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:07:28,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:28,141 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:07:28,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:28,203 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:07:28,204 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:07:28,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1192767493] [2023-11-12 02:07:28,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1192767493] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:07:28,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:07:28,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-11-12 02:07:28,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119899130] [2023-11-12 02:07:28,205 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:28,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:07:28,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:07:28,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:07:28,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:07:28,207 INFO L87 Difference]: Start difference. First operand 723 states and 1089 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:28,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:28,423 INFO L93 Difference]: Finished difference Result 1044 states and 1492 transitions. [2023-11-12 02:07:28,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-12 02:07:28,424 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 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 22 [2023-11-12 02:07:28,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:28,430 INFO L225 Difference]: With dead ends: 1044 [2023-11-12 02:07:28,431 INFO L226 Difference]: Without dead ends: 1044 [2023-11-12 02:07:28,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-11-12 02:07:28,432 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 85 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:28,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 690 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:07:28,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2023-11-12 02:07:28,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 956. [2023-11-12 02:07:28,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 944 states have (on average 1.472457627118644) internal successors, (1390), 955 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:28,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1390 transitions. [2023-11-12 02:07:28,461 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1390 transitions. Word has length 22 [2023-11-12 02:07:28,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:28,461 INFO L495 AbstractCegarLoop]: Abstraction has 956 states and 1390 transitions. [2023-11-12 02:07:28,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:28,462 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1390 transitions. [2023-11-12 02:07:28,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-12 02:07:28,469 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:28,469 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:28,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:28,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:28,680 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:07:28,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:28,680 INFO L85 PathProgramCache]: Analyzing trace with hash -2107196217, now seen corresponding path program 1 times [2023-11-12 02:07:28,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:07:28,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652836171] [2023-11-12 02:07:28,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:28,681 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:28,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:07:28,682 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 02:07:28,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-12 02:07:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:28,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:07:28,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:28,836 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:28,837 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:28,910 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:28,911 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:07:28,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652836171] [2023-11-12 02:07:28,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652836171] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:07:28,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:07:28,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2023-11-12 02:07:28,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136994094] [2023-11-12 02:07:28,912 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:28,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:07:28,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:07:28,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:07:28,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:07:28,914 INFO L87 Difference]: Start difference. First operand 956 states and 1390 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:29,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:29,020 INFO L93 Difference]: Finished difference Result 1215 states and 1722 transitions. [2023-11-12 02:07:29,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:07:29,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-11-12 02:07:29,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:29,028 INFO L225 Difference]: With dead ends: 1215 [2023-11-12 02:07:29,029 INFO L226 Difference]: Without dead ends: 1215 [2023-11-12 02:07:29,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:07:29,030 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 91 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:29,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 202 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:07:29,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2023-11-12 02:07:29,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1048. [2023-11-12 02:07:29,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 1036 states have (on average 1.442084942084942) internal successors, (1494), 1047 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:29,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1494 transitions. [2023-11-12 02:07:29,063 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1494 transitions. Word has length 24 [2023-11-12 02:07:29,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:29,064 INFO L495 AbstractCegarLoop]: Abstraction has 1048 states and 1494 transitions. [2023-11-12 02:07:29,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:29,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1494 transitions. [2023-11-12 02:07:29,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 02:07:29,066 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:29,067 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:29,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:29,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:29,278 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:07:29,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:29,278 INFO L85 PathProgramCache]: Analyzing trace with hash -6965384, now seen corresponding path program 1 times [2023-11-12 02:07:29,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:07:29,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1267237619] [2023-11-12 02:07:29,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:29,279 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:29,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:07:29,280 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 02:07:29,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-12 02:07:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:29,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:07:29,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:29,419 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:29,419 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:29,455 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:29,455 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:07:29,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1267237619] [2023-11-12 02:07:29,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1267237619] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:07:29,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:07:29,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-11-12 02:07:29,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573509861] [2023-11-12 02:07:29,457 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:29,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:07:29,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:07:29,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:07:29,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:07:29,458 INFO L87 Difference]: Start difference. First operand 1048 states and 1494 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:29,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:29,554 INFO L93 Difference]: Finished difference Result 1031 states and 1399 transitions. [2023-11-12 02:07:29,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:07:29,555 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-12 02:07:29,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:29,581 INFO L225 Difference]: With dead ends: 1031 [2023-11-12 02:07:29,582 INFO L226 Difference]: Without dead ends: 1031 [2023-11-12 02:07:29,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:07:29,584 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 94 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:29,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 565 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:07:29,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2023-11-12 02:07:29,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 971. [2023-11-12 02:07:29,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 959 states have (on average 1.4087591240875912) internal successors, (1351), 970 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:29,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1351 transitions. [2023-11-12 02:07:29,610 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1351 transitions. Word has length 27 [2023-11-12 02:07:29,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:29,610 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1351 transitions. [2023-11-12 02:07:29,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:29,611 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1351 transitions. [2023-11-12 02:07:29,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-12 02:07:29,613 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:29,614 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:29,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:29,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:29,826 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:07:29,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:29,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1768537834, now seen corresponding path program 1 times [2023-11-12 02:07:29,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:07:29,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [857548575] [2023-11-12 02:07:29,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:29,828 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:29,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:07:29,829 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 02:07:29,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-12 02:07:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:29,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 02:07:29,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:30,011 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:30,011 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:30,067 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:30,067 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:07:30,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [857548575] [2023-11-12 02:07:30,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [857548575] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:07:30,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:07:30,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2023-11-12 02:07:30,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181575730] [2023-11-12 02:07:30,068 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:30,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:07:30,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:07:30,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:07:30,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:07:30,070 INFO L87 Difference]: Start difference. First operand 971 states and 1351 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 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) [2023-11-12 02:07:30,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:30,199 INFO L93 Difference]: Finished difference Result 949 states and 1256 transitions. [2023-11-12 02:07:30,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:07:30,200 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 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) Word has length 35 [2023-11-12 02:07:30,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:30,205 INFO L225 Difference]: With dead ends: 949 [2023-11-12 02:07:30,205 INFO L226 Difference]: Without dead ends: 949 [2023-11-12 02:07:30,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:07:30,206 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 130 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:30,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 892 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:07:30,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2023-11-12 02:07:30,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 905. [2023-11-12 02:07:30,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 893 states have (on average 1.3773796192609182) internal successors, (1230), 904 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:30,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1230 transitions. [2023-11-12 02:07:30,228 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1230 transitions. Word has length 35 [2023-11-12 02:07:30,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:30,229 INFO L495 AbstractCegarLoop]: Abstraction has 905 states and 1230 transitions. [2023-11-12 02:07:30,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 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) [2023-11-12 02:07:30,229 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1230 transitions. [2023-11-12 02:07:30,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-12 02:07:30,230 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:30,231 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:30,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:30,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:30,442 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:07:30,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:30,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1819733348, now seen corresponding path program 1 times [2023-11-12 02:07:30,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:07:30,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93120049] [2023-11-12 02:07:30,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:30,444 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:30,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:07:30,445 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 02:07:30,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-12 02:07:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:30,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 02:07:30,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:30,663 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 32 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-12 02:07:30,663 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:30,861 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 32 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-12 02:07:30,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:07:30,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93120049] [2023-11-12 02:07:30,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [93120049] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:07:30,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:07:30,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-12 02:07:30,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467144413] [2023-11-12 02:07:30,863 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:30,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 02:07:30,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:07:30,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 02:07:30,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:07:30,866 INFO L87 Difference]: Start difference. First operand 905 states and 1230 transitions. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 10 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) [2023-11-12 02:07:31,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:31,139 INFO L93 Difference]: Finished difference Result 1397 states and 1877 transitions. [2023-11-12 02:07:31,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-12 02:07:31,140 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 10 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 40 [2023-11-12 02:07:31,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:31,148 INFO L225 Difference]: With dead ends: 1397 [2023-11-12 02:07:31,148 INFO L226 Difference]: Without dead ends: 1397 [2023-11-12 02:07:31,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-11-12 02:07:31,149 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 365 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:31,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 883 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:07:31,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1397 states. [2023-11-12 02:07:31,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1397 to 1316. [2023-11-12 02:07:31,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 1304 states have (on average 1.4049079754601228) internal successors, (1832), 1315 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:31,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1832 transitions. [2023-11-12 02:07:31,182 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1832 transitions. Word has length 40 [2023-11-12 02:07:31,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:31,182 INFO L495 AbstractCegarLoop]: Abstraction has 1316 states and 1832 transitions. [2023-11-12 02:07:31,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 10 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) [2023-11-12 02:07:31,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1832 transitions. [2023-11-12 02:07:31,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-12 02:07:31,183 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:31,184 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:31,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:31,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:31,395 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:07:31,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:31,396 INFO L85 PathProgramCache]: Analyzing trace with hash -414991968, now seen corresponding path program 1 times [2023-11-12 02:07:31,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:07:31,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [995727400] [2023-11-12 02:07:31,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:31,397 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:31,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:07:31,398 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 02:07:31,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-12 02:07:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:31,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-12 02:07:31,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:31,649 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 15 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:31,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:32,049 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 15 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:32,050 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:07:32,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [995727400] [2023-11-12 02:07:32,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [995727400] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:07:32,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:07:32,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2023-11-12 02:07:32,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560572557] [2023-11-12 02:07:32,051 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:32,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-12 02:07:32,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:07:32,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-12 02:07:32,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-12 02:07:32,053 INFO L87 Difference]: Start difference. First operand 1316 states and 1832 transitions. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 13 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:32,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:32,577 INFO L93 Difference]: Finished difference Result 1894 states and 2542 transitions. [2023-11-12 02:07:32,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-12 02:07:32,578 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 13 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-11-12 02:07:32,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:32,590 INFO L225 Difference]: With dead ends: 1894 [2023-11-12 02:07:32,591 INFO L226 Difference]: Without dead ends: 1894 [2023-11-12 02:07:32,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2023-11-12 02:07:32,592 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 892 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:32,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 1421 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:07:32,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2023-11-12 02:07:32,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1771. [2023-11-12 02:07:32,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1771 states, 1759 states have (on average 1.4025014212620808) internal successors, (2467), 1770 states have internal predecessors, (2467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:32,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1771 states to 1771 states and 2467 transitions. [2023-11-12 02:07:32,648 INFO L78 Accepts]: Start accepts. Automaton has 1771 states and 2467 transitions. Word has length 40 [2023-11-12 02:07:32,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:32,648 INFO L495 AbstractCegarLoop]: Abstraction has 1771 states and 2467 transitions. [2023-11-12 02:07:32,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 13 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:32,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1771 states and 2467 transitions. [2023-11-12 02:07:32,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-12 02:07:32,649 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:32,650 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:32,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:32,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:32,862 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:07:32,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:32,863 INFO L85 PathProgramCache]: Analyzing trace with hash 576929085, now seen corresponding path program 1 times [2023-11-12 02:07:32,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:07:32,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [168669906] [2023-11-12 02:07:32,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:32,863 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:32,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:07:32,865 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 02:07:32,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-12 02:07:33,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:33,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-12 02:07:33,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:33,152 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:33,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:33,302 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:33,302 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:07:33,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [168669906] [2023-11-12 02:07:33,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [168669906] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:07:33,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:07:33,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-12 02:07:33,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084845031] [2023-11-12 02:07:33,303 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:33,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 02:07:33,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:07:33,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 02:07:33,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:07:33,304 INFO L87 Difference]: Start difference. First operand 1771 states and 2467 transitions. Second operand has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 12 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) [2023-11-12 02:07:33,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:33,724 INFO L93 Difference]: Finished difference Result 2224 states and 2963 transitions. [2023-11-12 02:07:33,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-12 02:07:33,725 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 12 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) Word has length 42 [2023-11-12 02:07:33,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:33,738 INFO L225 Difference]: With dead ends: 2224 [2023-11-12 02:07:33,739 INFO L226 Difference]: Without dead ends: 2224 [2023-11-12 02:07:33,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=221, Invalid=481, Unknown=0, NotChecked=0, Total=702 [2023-11-12 02:07:33,740 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 855 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:33,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 1436 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:07:33,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2224 states. [2023-11-12 02:07:33,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2224 to 2149. [2023-11-12 02:07:33,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 2137 states have (on average 1.3795039775386055) internal successors, (2948), 2148 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:33,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 2948 transitions. [2023-11-12 02:07:33,808 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 2948 transitions. Word has length 42 [2023-11-12 02:07:33,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:33,809 INFO L495 AbstractCegarLoop]: Abstraction has 2149 states and 2948 transitions. [2023-11-12 02:07:33,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 12 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) [2023-11-12 02:07:33,809 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 2948 transitions. [2023-11-12 02:07:33,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 02:07:33,810 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:33,810 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:33,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:34,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:34,027 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:07:34,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:34,027 INFO L85 PathProgramCache]: Analyzing trace with hash -896397186, now seen corresponding path program 1 times [2023-11-12 02:07:34,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:07:34,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1465241605] [2023-11-12 02:07:34,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:34,028 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:34,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:07:34,030 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 02:07:34,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-12 02:07:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:34,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-12 02:07:34,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:34,243 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 15 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:34,243 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:34,325 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 15 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:34,325 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:07:34,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1465241605] [2023-11-12 02:07:34,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1465241605] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:07:34,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:07:34,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2023-11-12 02:07:34,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134002814] [2023-11-12 02:07:34,326 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:34,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:07:34,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:07:34,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:07:34,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:07:34,328 INFO L87 Difference]: Start difference. First operand 2149 states and 2948 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:34,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:34,516 INFO L93 Difference]: Finished difference Result 2210 states and 2941 transitions. [2023-11-12 02:07:34,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-12 02:07:34,516 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-11-12 02:07:34,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:34,528 INFO L225 Difference]: With dead ends: 2210 [2023-11-12 02:07:34,528 INFO L226 Difference]: Without dead ends: 2210 [2023-11-12 02:07:34,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:07:34,530 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 148 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:34,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 1134 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:07:34,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2210 states. [2023-11-12 02:07:34,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2210 to 2105. [2023-11-12 02:07:34,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2105 states, 2093 states have (on average 1.3664596273291925) internal successors, (2860), 2104 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:34,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2105 states to 2105 states and 2860 transitions. [2023-11-12 02:07:34,583 INFO L78 Accepts]: Start accepts. Automaton has 2105 states and 2860 transitions. Word has length 43 [2023-11-12 02:07:34,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:34,585 INFO L495 AbstractCegarLoop]: Abstraction has 2105 states and 2860 transitions. [2023-11-12 02:07:34,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:34,585 INFO L276 IsEmpty]: Start isEmpty. Operand 2105 states and 2860 transitions. [2023-11-12 02:07:34,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-12 02:07:34,586 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:34,587 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:34,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:34,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:34,799 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:07:34,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:34,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1836881493, now seen corresponding path program 1 times [2023-11-12 02:07:34,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:07:34,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320016447] [2023-11-12 02:07:34,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:34,800 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:34,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:07:34,801 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 02:07:34,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-12 02:07:34,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:34,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-12 02:07:34,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:35,104 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 19 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:35,105 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:35,209 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 19 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:35,209 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:07:35,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320016447] [2023-11-12 02:07:35,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [320016447] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:07:35,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:07:35,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2023-11-12 02:07:35,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429673272] [2023-11-12 02:07:35,210 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:35,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:07:35,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:07:35,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:07:35,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:07:35,211 INFO L87 Difference]: Start difference. First operand 2105 states and 2860 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:35,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:35,463 INFO L93 Difference]: Finished difference Result 2194 states and 2897 transitions. [2023-11-12 02:07:35,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-12 02:07:35,464 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-11-12 02:07:35,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:35,476 INFO L225 Difference]: With dead ends: 2194 [2023-11-12 02:07:35,476 INFO L226 Difference]: Without dead ends: 2194 [2023-11-12 02:07:35,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:07:35,477 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 183 mSDsluCounter, 1340 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:35,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 1564 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:07:35,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2194 states. [2023-11-12 02:07:35,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2194 to 2083. [2023-11-12 02:07:35,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2083 states, 2071 states have (on average 1.3597295992274263) internal successors, (2816), 2082 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:35,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 2816 transitions. [2023-11-12 02:07:35,547 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 2816 transitions. Word has length 53 [2023-11-12 02:07:35,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:35,548 INFO L495 AbstractCegarLoop]: Abstraction has 2083 states and 2816 transitions. [2023-11-12 02:07:35,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:35,548 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 2816 transitions. [2023-11-12 02:07:35,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-12 02:07:35,549 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:35,550 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:35,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:35,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:35,762 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:07:35,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:35,762 INFO L85 PathProgramCache]: Analyzing trace with hash -791217300, now seen corresponding path program 2 times [2023-11-12 02:07:35,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:07:35,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2073507763] [2023-11-12 02:07:35,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:07:35,763 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:35,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:07:35,764 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 02:07:35,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-12 02:07:35,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 02:07:35,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:07:35,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-12 02:07:35,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:36,046 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 58 proven. 66 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:07:36,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:36,664 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 58 proven. 66 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:07:36,664 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:07:36,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2073507763] [2023-11-12 02:07:36,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2073507763] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:07:36,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:07:36,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 16 [2023-11-12 02:07:36,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878023933] [2023-11-12 02:07:36,668 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:36,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-12 02:07:36,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:07:36,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-12 02:07:36,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:07:36,671 INFO L87 Difference]: Start difference. First operand 2083 states and 2816 transitions. Second operand has 17 states, 17 states have (on average 6.117647058823529) internal successors, (104), 16 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:37,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:37,446 INFO L93 Difference]: Finished difference Result 1902 states and 2427 transitions. [2023-11-12 02:07:37,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-12 02:07:37,446 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.117647058823529) internal successors, (104), 16 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-11-12 02:07:37,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:37,455 INFO L225 Difference]: With dead ends: 1902 [2023-11-12 02:07:37,456 INFO L226 Difference]: Without dead ends: 1902 [2023-11-12 02:07:37,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=237, Invalid=819, Unknown=0, NotChecked=0, Total=1056 [2023-11-12 02:07:37,458 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 798 mSDsluCounter, 1951 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 2170 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:37,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 2170 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:07:37,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1902 states. [2023-11-12 02:07:37,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1902 to 1827. [2023-11-12 02:07:37,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1827 states, 1815 states have (on average 1.3289256198347108) internal successors, (2412), 1826 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:37,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 2412 transitions. [2023-11-12 02:07:37,511 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 2412 transitions. Word has length 63 [2023-11-12 02:07:37,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:37,511 INFO L495 AbstractCegarLoop]: Abstraction has 1827 states and 2412 transitions. [2023-11-12 02:07:37,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.117647058823529) internal successors, (104), 16 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:37,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 2412 transitions. [2023-11-12 02:07:37,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-12 02:07:37,513 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:37,513 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:37,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:37,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:37,724 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:07:37,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:37,725 INFO L85 PathProgramCache]: Analyzing trace with hash 965172541, now seen corresponding path program 1 times [2023-11-12 02:07:37,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:07:37,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78530232] [2023-11-12 02:07:37,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:37,726 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:37,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:07:37,728 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 02:07:37,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-12 02:07:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:37,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:07:37,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:37,962 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 33 proven. 47 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-12 02:07:37,963 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:38,052 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 33 proven. 47 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-12 02:07:38,052 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:07:38,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [78530232] [2023-11-12 02:07:38,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [78530232] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:07:38,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:07:38,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-11-12 02:07:38,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924395940] [2023-11-12 02:07:38,053 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:38,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:07:38,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:07:38,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:07:38,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:07:38,055 INFO L87 Difference]: Start difference. First operand 1827 states and 2412 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:38,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:38,278 INFO L93 Difference]: Finished difference Result 3335 states and 4422 transitions. [2023-11-12 02:07:38,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:07:38,279 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-11-12 02:07:38,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:38,296 INFO L225 Difference]: With dead ends: 3335 [2023-11-12 02:07:38,296 INFO L226 Difference]: Without dead ends: 3335 [2023-11-12 02:07:38,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:07:38,297 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 116 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:38,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 246 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:07:38,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3335 states. [2023-11-12 02:07:38,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3335 to 2777. [2023-11-12 02:07:38,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2777 states, 2765 states have (on average 1.335985533453888) internal successors, (3694), 2776 states have internal predecessors, (3694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:38,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2777 states to 2777 states and 3694 transitions. [2023-11-12 02:07:38,358 INFO L78 Accepts]: Start accepts. Automaton has 2777 states and 3694 transitions. Word has length 64 [2023-11-12 02:07:38,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:38,358 INFO L495 AbstractCegarLoop]: Abstraction has 2777 states and 3694 transitions. [2023-11-12 02:07:38,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:38,359 INFO L276 IsEmpty]: Start isEmpty. Operand 2777 states and 3694 transitions. [2023-11-12 02:07:38,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-12 02:07:38,360 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:38,360 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 5, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:38,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:38,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:38,571 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:07:38,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:38,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1937207538, now seen corresponding path program 1 times [2023-11-12 02:07:38,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:07:38,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504873185] [2023-11-12 02:07:38,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:38,572 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:38,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:07:38,573 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 02:07:38,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-12 02:07:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:38,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:07:38,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:38,710 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-12 02:07:38,882 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-12 02:07:38,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:39,030 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-12 02:07:39,030 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:07:39,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504873185] [2023-11-12 02:07:39,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504873185] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:07:39,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:07:39,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2023-11-12 02:07:39,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128672435] [2023-11-12 02:07:39,032 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:39,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:07:39,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:07:39,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:07:39,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:07:39,033 INFO L87 Difference]: Start difference. First operand 2777 states and 3694 transitions. Second operand has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:39,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:39,553 INFO L93 Difference]: Finished difference Result 5546 states and 7395 transitions. [2023-11-12 02:07:39,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:07:39,554 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-11-12 02:07:39,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:39,588 INFO L225 Difference]: With dead ends: 5546 [2023-11-12 02:07:39,588 INFO L226 Difference]: Without dead ends: 5546 [2023-11-12 02:07:39,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:07:39,589 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 254 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:39,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 242 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 02:07:39,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5546 states. [2023-11-12 02:07:39,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5546 to 4908. [2023-11-12 02:07:39,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4908 states, 4897 states have (on average 1.3498060036757198) internal successors, (6610), 4907 states have internal predecessors, (6610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:39,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4908 states to 4908 states and 6610 transitions. [2023-11-12 02:07:39,728 INFO L78 Accepts]: Start accepts. Automaton has 4908 states and 6610 transitions. Word has length 69 [2023-11-12 02:07:39,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:39,729 INFO L495 AbstractCegarLoop]: Abstraction has 4908 states and 6610 transitions. [2023-11-12 02:07:39,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:39,729 INFO L276 IsEmpty]: Start isEmpty. Operand 4908 states and 6610 transitions. [2023-11-12 02:07:39,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-12 02:07:39,730 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:39,731 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 5, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:39,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:39,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:39,942 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-12 02:07:39,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:39,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1937207539, now seen corresponding path program 1 times [2023-11-12 02:07:39,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:07:39,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604212294] [2023-11-12 02:07:39,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:39,944 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:07:39,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:07:39,946 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 02:07:39,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151fda7a-2a49-44b9-a701-644f4a5e312a/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-11-12 02:07:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:40,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 02:07:40,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:40,093 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 02:07:40,465 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-12 02:07:40,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:41,272 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-12 02:07:41,273 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:07:41,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1604212294] [2023-11-12 02:07:41,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1604212294] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:07:41,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:07:41,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-12 02:07:41,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204779138] [2023-11-12 02:07:41,273 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:41,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:07:41,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:07:41,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:07:41,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:07:41,275 INFO L87 Difference]: Start difference. First operand 4908 states and 6610 transitions. Second operand has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)