./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/sll-queue-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) 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_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/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_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-queue-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash af4a0e4f738e916feae01fb2c2f056f4ba7834b8a7b8d69765614c5417c16c63 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:15:04,541 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:15:04,665 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2023-11-12 02:15:04,672 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:15:04,673 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:15:04,711 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:15:04,711 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:15:04,712 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:15:04,713 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:15:04,718 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:15:04,720 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:15:04,721 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:15:04,721 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:15:04,723 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:15:04,724 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:15:04,725 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:15:04,725 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:15:04,725 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:15:04,726 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:15:04,726 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:15:04,727 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:15:04,728 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:15:04,728 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:15:04,730 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:15:04,730 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:15:04,731 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:15:04,731 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:15:04,732 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:15:04,733 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:15:04,733 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:15:04,734 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:15:04,735 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:15:04,735 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:15:04,736 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:15:04,736 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:15:04,736 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:15:04,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:15:04,737 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:15:04,737 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:15:04,738 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:15:04,738 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:15:04,738 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_5df5b7e5-9f07-4df2-8467-445c7603d5ad/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af4a0e4f738e916feae01fb2c2f056f4ba7834b8a7b8d69765614c5417c16c63 [2023-11-12 02:15:05,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:15:05,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:15:05,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:15:05,142 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:15:05,143 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:15:05,145 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/forester-heap/sll-queue-2.i [2023-11-12 02:15:08,320 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:15:08,722 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:15:08,723 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/sv-benchmarks/c/forester-heap/sll-queue-2.i [2023-11-12 02:15:08,746 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/data/456afc08b/97764d344bb04783985ec1cd824837fc/FLAG84dd2b7d2 [2023-11-12 02:15:08,769 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/data/456afc08b/97764d344bb04783985ec1cd824837fc [2023-11-12 02:15:08,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:15:08,777 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:15:08,781 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:15:08,781 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:15:08,787 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:15:08,787 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:15:08" (1/1) ... [2023-11-12 02:15:08,789 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63493cbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:08, skipping insertion in model container [2023-11-12 02:15:08,789 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:15:08" (1/1) ... [2023-11-12 02:15:08,859 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:15:09,217 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:15:09,227 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:15:09,272 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:15:09,303 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:15:09,303 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:09 WrapperNode [2023-11-12 02:15:09,304 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:15:09,305 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:15:09,305 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:15:09,305 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:15:09,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:09" (1/1) ... [2023-11-12 02:15:09,328 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:09" (1/1) ... [2023-11-12 02:15:09,356 INFO L138 Inliner]: procedures = 119, calls = 49, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 220 [2023-11-12 02:15:09,356 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:15:09,357 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:15:09,357 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:15:09,357 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:15:09,367 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:09" (1/1) ... [2023-11-12 02:15:09,367 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:09" (1/1) ... [2023-11-12 02:15:09,372 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:09" (1/1) ... [2023-11-12 02:15:09,373 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:09" (1/1) ... [2023-11-12 02:15:09,383 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:09" (1/1) ... [2023-11-12 02:15:09,390 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:09" (1/1) ... [2023-11-12 02:15:09,393 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:09" (1/1) ... [2023-11-12 02:15:09,395 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:09" (1/1) ... [2023-11-12 02:15:09,399 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:15:09,400 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:15:09,400 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:15:09,400 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:15:09,401 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:09" (1/1) ... [2023-11-12 02:15:09,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:15:09,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:15:09,446 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:15:09,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:15:09,492 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-12 02:15:09,493 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-12 02:15:09,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:15:09,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:15:09,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:15:09,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:15:09,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 02:15:09,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 02:15:09,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:15:09,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:15:09,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:15:09,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:15:09,624 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:15:09,626 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:15:10,011 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:15:10,018 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:15:10,019 INFO L302 CfgBuilder]: Removed 31 assume(true) statements. [2023-11-12 02:15:10,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:15:10 BoogieIcfgContainer [2023-11-12 02:15:10,021 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:15:10,024 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:15:10,024 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:15:10,028 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:15:10,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:15:08" (1/3) ... [2023-11-12 02:15:10,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72fff5e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:15:10, skipping insertion in model container [2023-11-12 02:15:10,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:09" (2/3) ... [2023-11-12 02:15:10,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72fff5e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:15:10, skipping insertion in model container [2023-11-12 02:15:10,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:15:10" (3/3) ... [2023-11-12 02:15:10,031 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-queue-2.i [2023-11-12 02:15:10,048 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:15:10,048 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 02:15:10,095 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:15:10,102 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;@4a7e74e3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:15:10,103 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-12 02:15:10,108 INFO L276 IsEmpty]: Start isEmpty. Operand has 91 states, 73 states have (on average 1.8082191780821917) internal successors, (132), 75 states have internal predecessors, (132), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-12 02:15:10,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-12 02:15:10,117 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:15:10,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:10,118 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-12 02:15:10,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:10,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1525442300, now seen corresponding path program 1 times [2023-11-12 02:15:10,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:10,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572420592] [2023-11-12 02:15:10,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:10,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:10,358 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 02:15:10,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:10,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572420592] [2023-11-12 02:15:10,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572420592] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:10,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:10,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:15:10,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161571957] [2023-11-12 02:15:10,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:10,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:15:10,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:10,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:15:10,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:15:10,402 INFO L87 Difference]: Start difference. First operand has 91 states, 73 states have (on average 1.8082191780821917) internal successors, (132), 75 states have internal predecessors, (132), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:10,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:15:10,427 INFO L93 Difference]: Finished difference Result 75 states and 98 transitions. [2023-11-12 02:15:10,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:15:10,442 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-12 02:15:10,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:15:10,450 INFO L225 Difference]: With dead ends: 75 [2023-11-12 02:15:10,450 INFO L226 Difference]: Without dead ends: 73 [2023-11-12 02:15:10,453 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 02:15:10,459 INFO L413 NwaCegarLoop]: 98 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, 98 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 02:15:10,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:15:10,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-12 02:15:10,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-11-12 02:15:10,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 57 states have (on average 1.4385964912280702) internal successors, (82), 71 states have internal predecessors, (82), 14 states have call successors, (14), 1 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:10,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 96 transitions. [2023-11-12 02:15:10,512 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 96 transitions. Word has length 7 [2023-11-12 02:15:10,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:15:10,512 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 96 transitions. [2023-11-12 02:15:10,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:10,513 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 96 transitions. [2023-11-12 02:15:10,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 02:15:10,514 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:15:10,514 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:10,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:15:10,515 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-12 02:15:10,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:10,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1651115684, now seen corresponding path program 1 times [2023-11-12 02:15:10,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:10,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466054525] [2023-11-12 02:15:10,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:10,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:10,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:10,697 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 02:15:10,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:10,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466054525] [2023-11-12 02:15:10,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466054525] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:10,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:10,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:15:10,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759875214] [2023-11-12 02:15:10,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:10,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:10,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:10,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:10,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:10,705 INFO L87 Difference]: Start difference. First operand 73 states and 96 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:10,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:15:10,782 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2023-11-12 02:15:10,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:10,783 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-12 02:15:10,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:15:10,788 INFO L225 Difference]: With dead ends: 69 [2023-11-12 02:15:10,788 INFO L226 Difference]: Without dead ends: 69 [2023-11-12 02:15:10,793 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 02:15:10,795 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 67 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:15:10,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 86 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:15:10,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-11-12 02:15:10,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2023-11-12 02:15:10,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 58 states have (on average 1.3448275862068966) internal successors, (78), 67 states have internal predecessors, (78), 9 states have call successors, (9), 1 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:10,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 87 transitions. [2023-11-12 02:15:10,814 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 87 transitions. Word has length 8 [2023-11-12 02:15:10,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:15:10,815 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 87 transitions. [2023-11-12 02:15:10,815 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:10,815 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 87 transitions. [2023-11-12 02:15:10,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 02:15:10,816 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:15:10,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:10,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:15:10,816 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-12 02:15:10,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:10,817 INFO L85 PathProgramCache]: Analyzing trace with hash -744980996, now seen corresponding path program 1 times [2023-11-12 02:15:10,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:10,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260319288] [2023-11-12 02:15:10,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:10,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:10,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:10,987 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 02:15:10,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:10,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260319288] [2023-11-12 02:15:10,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260319288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:10,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:10,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:15:10,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894389052] [2023-11-12 02:15:10,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:10,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:10,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:10,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:10,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:10,994 INFO L87 Difference]: Start difference. First operand 69 states and 87 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:11,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:15:11,051 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2023-11-12 02:15:11,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:11,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-12 02:15:11,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:15:11,055 INFO L225 Difference]: With dead ends: 68 [2023-11-12 02:15:11,055 INFO L226 Difference]: Without dead ends: 68 [2023-11-12 02:15:11,055 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 02:15:11,057 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 51 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:15:11,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 102 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:15:11,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-12 02:15:11,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-11-12 02:15:11,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 58 states have (on average 1.3275862068965518) internal successors, (77), 66 states have internal predecessors, (77), 8 states have call successors, (8), 1 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:11,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 85 transitions. [2023-11-12 02:15:11,074 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 85 transitions. Word has length 11 [2023-11-12 02:15:11,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:15:11,075 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 85 transitions. [2023-11-12 02:15:11,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:11,075 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 85 transitions. [2023-11-12 02:15:11,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-12 02:15:11,076 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:15:11,076 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:11,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:15:11,077 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-12 02:15:11,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:11,078 INFO L85 PathProgramCache]: Analyzing trace with hash 176108302, now seen corresponding path program 1 times [2023-11-12 02:15:11,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:11,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752579407] [2023-11-12 02:15:11,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:11,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:11,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:11,205 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 02:15:11,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:11,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752579407] [2023-11-12 02:15:11,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752579407] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:11,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:11,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:15:11,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108085796] [2023-11-12 02:15:11,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:11,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:11,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:11,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:11,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:11,208 INFO L87 Difference]: Start difference. First operand 68 states and 85 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:11,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:15:11,244 INFO L93 Difference]: Finished difference Result 91 states and 113 transitions. [2023-11-12 02:15:11,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:11,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-12 02:15:11,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:15:11,246 INFO L225 Difference]: With dead ends: 91 [2023-11-12 02:15:11,246 INFO L226 Difference]: Without dead ends: 91 [2023-11-12 02:15:11,246 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 02:15:11,248 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 21 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:15:11,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 149 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:15:11,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-12 02:15:11,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2023-11-12 02:15:11,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 66 states have (on average 1.303030303030303) internal successors, (86), 74 states have internal predecessors, (86), 8 states have call successors, (8), 1 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:11,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 94 transitions. [2023-11-12 02:15:11,256 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 94 transitions. Word has length 14 [2023-11-12 02:15:11,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:15:11,257 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 94 transitions. [2023-11-12 02:15:11,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:11,257 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 94 transitions. [2023-11-12 02:15:11,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-12 02:15:11,258 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:15:11,259 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:11,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:15:11,259 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-12 02:15:11,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:11,260 INFO L85 PathProgramCache]: Analyzing trace with hash 421022757, now seen corresponding path program 1 times [2023-11-12 02:15:11,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:11,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541712862] [2023-11-12 02:15:11,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:11,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:11,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:15:11,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:11,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541712862] [2023-11-12 02:15:11,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541712862] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:11,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:11,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:15:11,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629196156] [2023-11-12 02:15:11,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:11,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:15:11,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:11,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:15:11,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:15:11,569 INFO L87 Difference]: Start difference. First operand 76 states and 94 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:11,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:15:11,677 INFO L93 Difference]: Finished difference Result 82 states and 100 transitions. [2023-11-12 02:15:11,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:15:11,678 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-12 02:15:11,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:15:11,679 INFO L225 Difference]: With dead ends: 82 [2023-11-12 02:15:11,679 INFO L226 Difference]: Without dead ends: 82 [2023-11-12 02:15:11,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:15:11,681 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 8 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:15:11,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 286 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:15:11,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-11-12 02:15:11,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2023-11-12 02:15:11,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 70 states have (on average 1.2857142857142858) internal successors, (90), 78 states have internal predecessors, (90), 8 states have call successors, (8), 1 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:11,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2023-11-12 02:15:11,688 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 98 transitions. Word has length 17 [2023-11-12 02:15:11,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:15:11,688 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 98 transitions. [2023-11-12 02:15:11,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:11,689 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 98 transitions. [2023-11-12 02:15:11,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-12 02:15:11,690 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:15:11,690 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:11,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:15:11,690 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-12 02:15:11,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:11,691 INFO L85 PathProgramCache]: Analyzing trace with hash 478281059, now seen corresponding path program 1 times [2023-11-12 02:15:11,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:11,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987902162] [2023-11-12 02:15:11,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:11,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:11,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:11,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:11,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987902162] [2023-11-12 02:15:11,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987902162] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:15:11,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325869895] [2023-11-12 02:15:11,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:11,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:11,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:15:11,792 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:15:11,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:15:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:11,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-12 02:15:11,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:15:12,072 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 13 treesize of output 9 [2023-11-12 02:15:12,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:12,115 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:15:12,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:12,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325869895] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:15:12,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:15:12,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-11-12 02:15:12,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571598959] [2023-11-12 02:15:12,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:15:12,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:15:12,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:12,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:15:12,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:15:12,169 INFO L87 Difference]: Start difference. First operand 80 states and 98 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:12,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:15:12,255 INFO L93 Difference]: Finished difference Result 85 states and 103 transitions. [2023-11-12 02:15:12,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:15:12,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-12 02:15:12,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:15:12,257 INFO L225 Difference]: With dead ends: 85 [2023-11-12 02:15:12,257 INFO L226 Difference]: Without dead ends: 83 [2023-11-12 02:15:12,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:15:12,259 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 0 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:15:12,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 299 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:15:12,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-12 02:15:12,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2023-11-12 02:15:12,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 80 states have internal predecessors, (92), 8 states have call successors, (8), 1 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:12,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2023-11-12 02:15:12,265 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 17 [2023-11-12 02:15:12,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:15:12,266 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2023-11-12 02:15:12,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:12,266 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2023-11-12 02:15:12,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-12 02:15:12,267 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:15:12,267 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:12,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:15:12,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:12,473 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-12 02:15:12,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:12,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1941865044, now seen corresponding path program 2 times [2023-11-12 02:15:12,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:12,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69168220] [2023-11-12 02:15:12,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:12,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:12,602 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 02:15:12,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:12,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69168220] [2023-11-12 02:15:12,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69168220] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:15:12,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751870429] [2023-11-12 02:15:12,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:15:12,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:12,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:15:12,604 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:15:12,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:15:12,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 02:15:12,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:15:12,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-12 02:15:12,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:15:12,837 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 02:15:12,837 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:15:12,918 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 02:15:12,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751870429] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:15:12,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:15:12,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2023-11-12 02:15:12,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083970868] [2023-11-12 02:15:12,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:15:12,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:15:12,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:12,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:15:12,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:15:12,920 INFO L87 Difference]: Start difference. First operand 82 states and 100 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states 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 02:15:13,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:15:13,200 INFO L93 Difference]: Finished difference Result 99 states and 120 transitions. [2023-11-12 02:15:13,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:15:13,201 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-12 02:15:13,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:15:13,202 INFO L225 Difference]: With dead ends: 99 [2023-11-12 02:15:13,202 INFO L226 Difference]: Without dead ends: 88 [2023-11-12 02:15:13,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:15:13,205 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 90 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:15:13,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 280 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:15:13,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-11-12 02:15:13,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 77. [2023-11-12 02:15:13,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 67 states have (on average 1.2985074626865671) internal successors, (87), 75 states have internal predecessors, (87), 8 states have call successors, (8), 1 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:13,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 95 transitions. [2023-11-12 02:15:13,225 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 95 transitions. Word has length 18 [2023-11-12 02:15:13,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:15:13,226 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 95 transitions. [2023-11-12 02:15:13,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states 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 02:15:13,226 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 95 transitions. [2023-11-12 02:15:13,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-12 02:15:13,227 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:15:13,227 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:13,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:15:13,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:13,428 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-12 02:15:13,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:13,428 INFO L85 PathProgramCache]: Analyzing trace with hash 227239491, now seen corresponding path program 1 times [2023-11-12 02:15:13,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:13,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506633367] [2023-11-12 02:15:13,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:13,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:13,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:13,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:13,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:13,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506633367] [2023-11-12 02:15:13,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506633367] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:15:13,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630410508] [2023-11-12 02:15:13,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:13,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:13,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:15:13,705 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:15:13,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:15:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:13,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-12 02:15:13,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:15:13,830 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 02:15:13,872 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2023-11-12 02:15:13,893 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-12 02:15:13,893 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2023-11-12 02:15:13,907 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-12 02:15:13,922 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-12 02:15:13,922 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-12 02:15:13,958 INFO L322 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-12 02:15:13,958 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 32 [2023-11-12 02:15:14,060 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-12 02:15:14,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:14,070 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:15:14,102 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_206 (Array Int Int))) (not (= 0 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_206) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) is different from false [2023-11-12 02:15:14,118 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:15:14,118 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2023-11-12 02:15:14,131 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:15:14,131 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 41 [2023-11-12 02:15:14,138 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-12 02:15:14,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:14,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630410508] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:15:14,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:15:14,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2023-11-12 02:15:14,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328617225] [2023-11-12 02:15:14,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:15:14,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-12 02:15:14,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:14,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-12 02:15:14,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=81, Unknown=1, NotChecked=18, Total=132 [2023-11-12 02:15:14,253 INFO L87 Difference]: Start difference. First operand 77 states and 95 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:14,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:15:14,449 INFO L93 Difference]: Finished difference Result 145 states and 181 transitions. [2023-11-12 02:15:14,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:15:14,450 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-12 02:15:14,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:15:14,451 INFO L225 Difference]: With dead ends: 145 [2023-11-12 02:15:14,451 INFO L226 Difference]: Without dead ends: 145 [2023-11-12 02:15:14,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=95, Unknown=1, NotChecked=20, Total=156 [2023-11-12 02:15:14,452 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 188 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:15:14,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 365 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 131 Invalid, 0 Unknown, 109 Unchecked, 0.2s Time] [2023-11-12 02:15:14,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-12 02:15:14,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 90. [2023-11-12 02:15:14,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 80 states have (on average 1.275) internal successors, (102), 88 states have internal predecessors, (102), 8 states have call successors, (8), 1 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:14,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 110 transitions. [2023-11-12 02:15:14,464 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 110 transitions. Word has length 21 [2023-11-12 02:15:14,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:15:14,465 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 110 transitions. [2023-11-12 02:15:14,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:14,465 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 110 transitions. [2023-11-12 02:15:14,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-12 02:15:14,469 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:15:14,469 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:14,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:15:14,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:14,675 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-12 02:15:14,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:14,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1176120509, now seen corresponding path program 1 times [2023-11-12 02:15:14,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:14,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832390990] [2023-11-12 02:15:14,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:14,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:14,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:14,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:14,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832390990] [2023-11-12 02:15:14,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832390990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:14,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:14,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:15:14,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935894508] [2023-11-12 02:15:14,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:14,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:14,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:14,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:14,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:14,720 INFO L87 Difference]: Start difference. First operand 90 states and 110 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:14,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:15:14,751 INFO L93 Difference]: Finished difference Result 124 states and 149 transitions. [2023-11-12 02:15:14,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:14,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-11-12 02:15:14,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:15:14,753 INFO L225 Difference]: With dead ends: 124 [2023-11-12 02:15:14,753 INFO L226 Difference]: Without dead ends: 124 [2023-11-12 02:15:14,753 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 02:15:14,754 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 28 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:15:14,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 144 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:15:14,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-11-12 02:15:14,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 103. [2023-11-12 02:15:14,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 93 states have (on average 1.2365591397849462) internal successors, (115), 101 states have internal predecessors, (115), 8 states have call successors, (8), 1 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:14,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 123 transitions. [2023-11-12 02:15:14,766 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 123 transitions. Word has length 22 [2023-11-12 02:15:14,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:15:14,767 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 123 transitions. [2023-11-12 02:15:14,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:14,767 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 123 transitions. [2023-11-12 02:15:14,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-12 02:15:14,770 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:15:14,770 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:14,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:15:14,770 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-12 02:15:14,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:14,771 INFO L85 PathProgramCache]: Analyzing trace with hash 622380787, now seen corresponding path program 1 times [2023-11-12 02:15:14,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:14,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433785971] [2023-11-12 02:15:14,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:14,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:14,850 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 02:15:14,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:14,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433785971] [2023-11-12 02:15:14,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433785971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:14,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:14,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:15:14,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343866005] [2023-11-12 02:15:14,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:14,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:14,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:14,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:14,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:14,853 INFO L87 Difference]: Start difference. First operand 103 states and 123 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:14,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:15:14,888 INFO L93 Difference]: Finished difference Result 138 states and 164 transitions. [2023-11-12 02:15:14,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:14,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-11-12 02:15:14,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:15:14,890 INFO L225 Difference]: With dead ends: 138 [2023-11-12 02:15:14,890 INFO L226 Difference]: Without dead ends: 138 [2023-11-12 02:15:14,890 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 02:15:14,891 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 33 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:15:14,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 167 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:15:14,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-11-12 02:15:14,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 116. [2023-11-12 02:15:14,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 106 states have (on average 1.2169811320754718) internal successors, (129), 114 states have internal predecessors, (129), 8 states have call successors, (8), 1 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:14,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 137 transitions. [2023-11-12 02:15:14,897 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 137 transitions. Word has length 29 [2023-11-12 02:15:14,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:15:14,898 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 137 transitions. [2023-11-12 02:15:14,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:14,898 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 137 transitions. [2023-11-12 02:15:14,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-12 02:15:14,899 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:15:14,900 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:14,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:15:14,900 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-12 02:15:14,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:14,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1749267135, now seen corresponding path program 1 times [2023-11-12 02:15:14,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:14,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432536016] [2023-11-12 02:15:14,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:14,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:15,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:15:15,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:15,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432536016] [2023-11-12 02:15:15,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432536016] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:15:15,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723675300] [2023-11-12 02:15:15,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:15,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:15,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:15:15,018 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:15:15,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:15:15,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:15,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-12 02:15:15,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:15:15,201 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-11-12 02:15:15,204 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-11-12 02:15:15,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:15:15,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:15:15,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:15:15,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723675300] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:15:15,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:15:15,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2023-11-12 02:15:15,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204276289] [2023-11-12 02:15:15,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:15:15,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:15:15,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:15,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:15:15,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:15:15,288 INFO L87 Difference]: Start difference. First operand 116 states and 137 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:15,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:15:15,374 INFO L93 Difference]: Finished difference Result 135 states and 160 transitions. [2023-11-12 02:15:15,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:15:15,375 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-11-12 02:15:15,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:15:15,376 INFO L225 Difference]: With dead ends: 135 [2023-11-12 02:15:15,376 INFO L226 Difference]: Without dead ends: 132 [2023-11-12 02:15:15,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:15:15,377 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 101 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:15:15,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 153 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:15:15,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-12 02:15:15,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2023-11-12 02:15:15,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 120 states have (on average 1.225) internal successors, (147), 128 states have internal predecessors, (147), 8 states have call successors, (8), 1 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:15,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 155 transitions. [2023-11-12 02:15:15,383 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 155 transitions. Word has length 29 [2023-11-12 02:15:15,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:15:15,384 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 155 transitions. [2023-11-12 02:15:15,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:15,384 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 155 transitions. [2023-11-12 02:15:15,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-12 02:15:15,385 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:15:15,385 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:15,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:15:15,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-12 02:15:15,596 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-12 02:15:15,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:15,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1811642221, now seen corresponding path program 1 times [2023-11-12 02:15:15,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:15,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650435002] [2023-11-12 02:15:15,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:15,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:16,066 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:16,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:16,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650435002] [2023-11-12 02:15:16,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650435002] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:15:16,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475241497] [2023-11-12 02:15:16,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:16,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:16,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:15:16,068 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:15:16,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:15:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:16,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-12 02:15:16,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:15:16,215 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 02:15:16,256 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2023-11-12 02:15:16,271 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-12 02:15:16,271 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2023-11-12 02:15:16,285 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-12 02:15:16,308 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-12 02:15:16,308 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-12 02:15:16,359 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-12 02:15:16,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:15:16,493 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 30 [2023-11-12 02:15:16,505 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 10 [2023-11-12 02:15:16,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:15:16,523 INFO L322 Elim1Store]: treesize reduction 44, result has 10.2 percent of original size [2023-11-12 02:15:16,523 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 36 [2023-11-12 02:15:16,543 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-12 02:15:16,544 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2023-11-12 02:15:16,600 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 24 [2023-11-12 02:15:16,721 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-12 02:15:16,725 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:16,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:15:16,766 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_469 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_469) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0))) is different from false [2023-11-12 02:15:16,872 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:15:16,872 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-11-12 02:15:16,884 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:15:16,884 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 82 [2023-11-12 02:15:16,893 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2023-11-12 02:15:16,902 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 46 [2023-11-12 02:15:17,123 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-12 02:15:17,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475241497] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:15:17,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:15:17,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 16 [2023-11-12 02:15:17,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585184624] [2023-11-12 02:15:17,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:15:17,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-12 02:15:17,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:17,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-12 02:15:17,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=162, Unknown=2, NotChecked=26, Total=240 [2023-11-12 02:15:17,126 INFO L87 Difference]: Start difference. First operand 130 states and 155 transitions. Second operand has 16 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:17,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:15:17,894 INFO L93 Difference]: Finished difference Result 182 states and 217 transitions. [2023-11-12 02:15:17,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:15:17,895 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-11-12 02:15:17,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:15:17,896 INFO L225 Difference]: With dead ends: 182 [2023-11-12 02:15:17,896 INFO L226 Difference]: Without dead ends: 182 [2023-11-12 02:15:17,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=316, Unknown=2, NotChecked=38, Total=462 [2023-11-12 02:15:17,898 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 328 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 146 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:15:17,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 451 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 313 Invalid, 0 Unknown, 146 Unchecked, 0.5s Time] [2023-11-12 02:15:17,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-11-12 02:15:17,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 129. [2023-11-12 02:15:17,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 120 states have (on average 1.2166666666666666) internal successors, (146), 127 states have internal predecessors, (146), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:17,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 153 transitions. [2023-11-12 02:15:17,905 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 153 transitions. Word has length 30 [2023-11-12 02:15:17,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:15:17,905 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 153 transitions. [2023-11-12 02:15:17,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:17,906 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 153 transitions. [2023-11-12 02:15:17,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-12 02:15:17,906 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:15:17,906 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:17,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:15:18,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:18,113 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-12 02:15:18,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:18,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1607239560, now seen corresponding path program 2 times [2023-11-12 02:15:18,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:18,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603586510] [2023-11-12 02:15:18,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:18,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:18,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:18,585 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 02:15:18,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:18,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603586510] [2023-11-12 02:15:18,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603586510] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:15:18,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925168570] [2023-11-12 02:15:18,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:15:18,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:18,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:15:18,587 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:15:18,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:15:18,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 02:15:18,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:15:18,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-12 02:15:18,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:15:18,808 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2023-11-12 02:15:18,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:15:18,814 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-12 02:15:18,861 INFO L322 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-12 02:15:18,861 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 45 [2023-11-12 02:15:19,135 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2023-11-12 02:15:19,209 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~item~0#1.base_34| Int) (|ULTIMATE.start_main_~item~0#1.base| Int)) (and (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~item~0#1.base_34| 1) |ULTIMATE.start_main_~item~0#1.base|) 0) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~item~0#1.base_34| 0) |ULTIMATE.start_main_~item~0#1.base| 0)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~item~0#1.base_34|) 0))) is different from true [2023-11-12 02:15:19,229 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-12 02:15:19,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:15:19,300 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_543 (Array Int Int))) (= |c_ULTIMATE.start_main_old_#valid#1| (store (store |c_#valid| |c_ULTIMATE.start_main_~head~0#1.base| 0) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_543) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0))) is different from false [2023-11-12 02:15:19,311 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:15:19,312 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2023-11-12 02:15:19,322 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:15:19,323 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 61 [2023-11-12 02:15:19,331 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-11-12 02:15:19,794 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 02:15:19,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925168570] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:15:19,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:15:19,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-11-12 02:15:19,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154246104] [2023-11-12 02:15:19,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:15:19,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-12 02:15:19,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:19,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-12 02:15:19,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=120, Unknown=2, NotChecked=46, Total=210 [2023-11-12 02:15:19,797 INFO L87 Difference]: Start difference. First operand 129 states and 153 transitions. Second operand has 15 states, 14 states have (on average 6.0) internal successors, (84), 15 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:20,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:15:20,139 INFO L93 Difference]: Finished difference Result 158 states and 189 transitions. [2023-11-12 02:15:20,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:15:20,140 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.0) internal successors, (84), 15 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-11-12 02:15:20,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:15:20,141 INFO L225 Difference]: With dead ends: 158 [2023-11-12 02:15:20,141 INFO L226 Difference]: Without dead ends: 156 [2023-11-12 02:15:20,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=143, Unknown=2, NotChecked=50, Total=240 [2023-11-12 02:15:20,142 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 43 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 208 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:15:20,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 499 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 174 Invalid, 0 Unknown, 208 Unchecked, 0.3s Time] [2023-11-12 02:15:20,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-11-12 02:15:20,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 145. [2023-11-12 02:15:20,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 136 states have (on average 1.2205882352941178) internal successors, (166), 143 states have internal predecessors, (166), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:20,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 173 transitions. [2023-11-12 02:15:20,148 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 173 transitions. Word has length 30 [2023-11-12 02:15:20,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:15:20,148 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 173 transitions. [2023-11-12 02:15:20,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.0) internal successors, (84), 15 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:20,149 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 173 transitions. [2023-11-12 02:15:20,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-12 02:15:20,149 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:15:20,149 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:20,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:15:20,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:20,350 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-12 02:15:20,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:20,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1777882656, now seen corresponding path program 1 times [2023-11-12 02:15:20,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:20,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416034065] [2023-11-12 02:15:20,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:20,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:20,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:15:20,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:20,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416034065] [2023-11-12 02:15:20,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416034065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:20,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:20,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:15:20,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679250945] [2023-11-12 02:15:20,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:20,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:20,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:20,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:20,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:20,406 INFO L87 Difference]: Start difference. First operand 145 states and 173 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:20,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:15:20,416 INFO L93 Difference]: Finished difference Result 148 states and 176 transitions. [2023-11-12 02:15:20,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:20,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-11-12 02:15:20,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:15:20,418 INFO L225 Difference]: With dead ends: 148 [2023-11-12 02:15:20,419 INFO L226 Difference]: Without dead ends: 148 [2023-11-12 02:15:20,419 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 02:15:20,420 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 157 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 02:15:20,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 157 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:15:20,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-11-12 02:15:20,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2023-11-12 02:15:20,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 139 states have (on average 1.2158273381294964) internal successors, (169), 146 states have internal predecessors, (169), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:20,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 176 transitions. [2023-11-12 02:15:20,428 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 176 transitions. Word has length 31 [2023-11-12 02:15:20,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:15:20,428 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 176 transitions. [2023-11-12 02:15:20,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:20,429 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 176 transitions. [2023-11-12 02:15:20,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-12 02:15:20,429 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:15:20,430 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:20,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 02:15:20,430 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-12 02:15:20,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:20,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1776035614, now seen corresponding path program 1 times [2023-11-12 02:15:20,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:20,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433741900] [2023-11-12 02:15:20,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:20,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:21,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:21,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:21,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433741900] [2023-11-12 02:15:21,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433741900] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:15:21,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214756164] [2023-11-12 02:15:21,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:21,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:21,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:15:21,095 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:15:21,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 02:15:21,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:21,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-12 02:15:21,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:15:21,240 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 02:15:21,267 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2023-11-12 02:15:21,280 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-12 02:15:21,281 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2023-11-12 02:15:21,288 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-12 02:15:21,303 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-12 02:15:21,304 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-12 02:15:21,310 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2023-11-12 02:15:21,316 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-12 02:15:21,345 INFO L322 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-12 02:15:21,346 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 68 [2023-11-12 02:15:21,359 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2023-11-12 02:15:21,364 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-12 02:15:21,567 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-12 02:15:21,575 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-12 02:15:21,619 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-12 02:15:21,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:21,625 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:15:21,718 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 52 [2023-11-12 02:15:21,780 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:15:21,780 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2023-11-12 02:15:21,788 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:15:21,788 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-11-12 02:15:21,801 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:15:21,802 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 47 [2023-11-12 02:15:21,818 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:15:21,818 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 53 [2023-11-12 02:15:21,827 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35 [2023-11-12 02:15:21,833 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2023-11-12 02:15:21,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:21,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214756164] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:15:21,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:15:21,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 15 [2023-11-12 02:15:21,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708317284] [2023-11-12 02:15:21,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:15:21,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-12 02:15:21,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:21,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-12 02:15:21,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=175, Unknown=1, NotChecked=0, Total=210 [2023-11-12 02:15:21,931 INFO L87 Difference]: Start difference. First operand 148 states and 176 transitions. Second operand has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:22,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:15:22,433 INFO L93 Difference]: Finished difference Result 206 states and 246 transitions. [2023-11-12 02:15:22,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:15:22,433 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-11-12 02:15:22,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:15:22,435 INFO L225 Difference]: With dead ends: 206 [2023-11-12 02:15:22,435 INFO L226 Difference]: Without dead ends: 206 [2023-11-12 02:15:22,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=296, Unknown=1, NotChecked=0, Total=380 [2023-11-12 02:15:22,436 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 197 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:15:22,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 697 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:15:22,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-11-12 02:15:22,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 151. [2023-11-12 02:15:22,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 142 states have (on average 1.2253521126760563) internal successors, (174), 149 states have internal predecessors, (174), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:22,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 181 transitions. [2023-11-12 02:15:22,442 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 181 transitions. Word has length 31 [2023-11-12 02:15:22,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:15:22,443 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 181 transitions. [2023-11-12 02:15:22,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:22,444 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 181 transitions. [2023-11-12 02:15:22,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-12 02:15:22,445 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:15:22,445 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:22,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-12 02:15:22,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:22,651 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-12 02:15:22,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:22,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1715235295, now seen corresponding path program 3 times [2023-11-12 02:15:22,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:22,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998791297] [2023-11-12 02:15:22,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:22,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:23,160 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:23,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:23,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998791297] [2023-11-12 02:15:23,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998791297] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:15:23,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342062773] [2023-11-12 02:15:23,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 02:15:23,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:23,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:15:23,165 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:15:23,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df5b7e5-9f07-4df2-8467-445c7603d5ad/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 02:15:23,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-12 02:15:23,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:15:23,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-12 02:15:23,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:15:23,366 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 02:15:23,408 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-12 02:15:23,409 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-12 02:15:23,418 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-12 02:15:23,432 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-12 02:15:23,478 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-12 02:15:23,478 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 58 [2023-11-12 02:15:23,489 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 25 [2023-11-12 02:15:23,835 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:23,835 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:15:23,984 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|)) (.cse3 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base|)) (.cse1 (+ |c_ULTIMATE.start_main_~item~0#1.offset| 4))) (and (forall ((v_ArrVal_731 (Array Int Int))) (or (not (= v_ArrVal_731 (store .cse0 .cse1 (select v_ArrVal_731 .cse1)))) (forall ((v_ArrVal_733 Int)) (= (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| (store .cse3 .cse1 v_ArrVal_733)))) (select (select .cse2 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_731) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (select (select .cse2 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) 0)))) (forall ((v_ArrVal_731 (Array Int Int))) (or (not (= v_ArrVal_731 (store .cse0 .cse1 (select v_ArrVal_731 .cse1)))) (forall ((v_ArrVal_733 Int)) (= (select (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_731))) (select .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| (store .cse3 .cse1 v_ArrVal_733)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) 0)))))) is different from false [2023-11-12 02:15:24,016 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:15:24,017 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 191 treesize of output 160 [2023-11-12 02:15:24,095 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:15:24,096 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 474 treesize of output 492 [2023-11-12 02:15:24,462 INFO L322 Elim1Store]: treesize reduction 90, result has 64.4 percent of original size [2023-11-12 02:15:24,463 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 15315 treesize of output 14630 [2023-11-12 02:15:44,840 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3