./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cstrspn-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cstrspn-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e27d2e3e94b55a3b3138a7f2b03714931363cb725f69630c5958681cf34de99e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 02:04:31,913 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 02:04:32,039 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-24 02:04:32,050 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 02:04:32,051 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 02:04:32,102 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 02:04:32,103 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 02:04:32,103 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 02:04:32,105 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 02:04:32,105 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 02:04:32,107 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 02:04:32,107 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 02:04:32,107 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 02:04:32,108 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 02:04:32,108 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 02:04:32,109 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 02:04:32,109 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 02:04:32,109 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 02:04:32,110 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 02:04:32,110 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 02:04:32,110 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-24 02:04:32,110 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-24 02:04:32,110 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-24 02:04:32,110 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 02:04:32,110 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-24 02:04:32,111 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 02:04:32,111 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 02:04:32,111 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 02:04:32,111 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 02:04:32,111 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 02:04:32,112 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 02:04:32,112 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 02:04:32,113 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 02:04:32,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:04:32,113 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 02:04:32,113 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 02:04:32,114 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 02:04:32,114 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 02:04:32,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:04:32,114 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 02:04:32,114 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 02:04:32,114 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 02:04:32,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 02:04:32,114 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 02:04:32,114 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 02:04:32,114 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 02:04:32,115 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 02:04:32,115 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e27d2e3e94b55a3b3138a7f2b03714931363cb725f69630c5958681cf34de99e [2024-11-24 02:04:32,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 02:04:32,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 02:04:32,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 02:04:32,479 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 02:04:32,479 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 02:04:32,482 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/array-memsafety/openbsd_cstrspn-alloca-2.i [2024-11-24 02:04:36,397 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/data/fc30187a9/ef4f8093aa8a41cdab793791776ab818/FLAG3b7e6399d [2024-11-24 02:04:36,792 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 02:04:36,793 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/sv-benchmarks/c/array-memsafety/openbsd_cstrspn-alloca-2.i [2024-11-24 02:04:36,810 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/data/fc30187a9/ef4f8093aa8a41cdab793791776ab818/FLAG3b7e6399d [2024-11-24 02:04:36,832 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/data/fc30187a9/ef4f8093aa8a41cdab793791776ab818 [2024-11-24 02:04:36,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 02:04:36,838 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 02:04:36,840 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 02:04:36,840 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 02:04:36,846 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 02:04:36,847 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 02:04:36" (1/1) ... [2024-11-24 02:04:36,849 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53bd0573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:36, skipping insertion in model container [2024-11-24 02:04:36,849 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 02:04:36" (1/1) ... [2024-11-24 02:04:36,883 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 02:04:37,302 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:04:37,303 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:04:37,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 02:04:37,324 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 02:04:37,399 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 02:04:37,443 INFO L204 MainTranslator]: Completed translation [2024-11-24 02:04:37,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:37 WrapperNode [2024-11-24 02:04:37,445 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 02:04:37,446 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 02:04:37,446 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 02:04:37,446 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 02:04:37,457 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:37" (1/1) ... [2024-11-24 02:04:37,477 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:37" (1/1) ... [2024-11-24 02:04:37,509 INFO L138 Inliner]: procedures = 117, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 86 [2024-11-24 02:04:37,509 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 02:04:37,510 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 02:04:37,510 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 02:04:37,511 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 02:04:37,523 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:37" (1/1) ... [2024-11-24 02:04:37,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:37" (1/1) ... [2024-11-24 02:04:37,526 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:37" (1/1) ... [2024-11-24 02:04:37,551 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [3, 3]. 50 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 4 writes are split as follows [2, 2]. [2024-11-24 02:04:37,554 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:37" (1/1) ... [2024-11-24 02:04:37,554 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:37" (1/1) ... [2024-11-24 02:04:37,569 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:37" (1/1) ... [2024-11-24 02:04:37,570 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:37" (1/1) ... [2024-11-24 02:04:37,578 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:37" (1/1) ... [2024-11-24 02:04:37,583 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:37" (1/1) ... [2024-11-24 02:04:37,585 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:37" (1/1) ... [2024-11-24 02:04:37,590 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 02:04:37,594 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 02:04:37,595 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 02:04:37,595 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 02:04:37,596 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:37" (1/1) ... [2024-11-24 02:04:37,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:04:37,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:04:37,647 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 02:04:37,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 02:04:37,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 02:04:37,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 02:04:37,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 02:04:37,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 02:04:37,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-24 02:04:37,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 02:04:37,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 02:04:37,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 02:04:37,856 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 02:04:37,859 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 02:04:38,213 INFO L? ?]: Removed 56 outVars from TransFormulas that were not future-live. [2024-11-24 02:04:38,213 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 02:04:38,228 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 02:04:38,228 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-24 02:04:38,229 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 02:04:38 BoogieIcfgContainer [2024-11-24 02:04:38,229 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 02:04:38,232 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 02:04:38,232 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 02:04:38,240 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 02:04:38,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 02:04:36" (1/3) ... [2024-11-24 02:04:38,241 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62f80457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 02:04:38, skipping insertion in model container [2024-11-24 02:04:38,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:37" (2/3) ... [2024-11-24 02:04:38,241 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62f80457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 02:04:38, skipping insertion in model container [2024-11-24 02:04:38,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 02:04:38" (3/3) ... [2024-11-24 02:04:38,242 INFO L128 eAbstractionObserver]: Analyzing ICFG openbsd_cstrspn-alloca-2.i [2024-11-24 02:04:38,292 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 02:04:38,294 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG openbsd_cstrspn-alloca-2.i that has 1 procedures, 44 locations, 1 initial locations, 3 loop locations, and 13 error locations. [2024-11-24 02:04:38,343 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 02:04:38,364 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2c15367c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 02:04:38,364 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-24 02:04:38,369 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 43 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:38,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-24 02:04:38,377 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:04:38,378 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:04:38,379 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:04:38,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:38,387 INFO L85 PathProgramCache]: Analyzing trace with hash 121325233, now seen corresponding path program 1 times [2024-11-24 02:04:38,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:38,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396897975] [2024-11-24 02:04:38,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:38,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:38,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:38,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:38,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396897975] [2024-11-24 02:04:38,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396897975] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:04:38,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:04:38,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 02:04:38,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621225759] [2024-11-24 02:04:38,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:04:38,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:04:38,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:38,835 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:04:38,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:04:38,839 INFO L87 Difference]: Start difference. First operand has 44 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 43 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:38,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:04:38,900 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2024-11-24 02:04:38,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 02:04:38,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-24 02:04:38,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:04:38,915 INFO L225 Difference]: With dead ends: 57 [2024-11-24 02:04:38,915 INFO L226 Difference]: Without dead ends: 55 [2024-11-24 02:04:38,917 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:04:38,924 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 12 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 02:04:38,926 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 96 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 02:04:38,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-24 02:04:38,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 45. [2024-11-24 02:04:38,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 32 states have (on average 1.59375) internal successors, (51), 44 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:38,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2024-11-24 02:04:38,977 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 8 [2024-11-24 02:04:38,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:04:38,977 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2024-11-24 02:04:38,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:38,978 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2024-11-24 02:04:38,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-24 02:04:38,978 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:04:38,979 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:04:38,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 02:04:38,979 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:04:38,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:38,980 INFO L85 PathProgramCache]: Analyzing trace with hash 178583535, now seen corresponding path program 1 times [2024-11-24 02:04:38,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:38,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745052477] [2024-11-24 02:04:38,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:38,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:39,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:39,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:39,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745052477] [2024-11-24 02:04:39,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745052477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:04:39,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:04:39,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 02:04:39,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986029568] [2024-11-24 02:04:39,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:04:39,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:04:39,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:39,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:04:39,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:04:39,728 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:39,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:04:39,846 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2024-11-24 02:04:39,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 02:04:39,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-24 02:04:39,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:04:39,848 INFO L225 Difference]: With dead ends: 63 [2024-11-24 02:04:39,848 INFO L226 Difference]: Without dead ends: 63 [2024-11-24 02:04:39,849 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 02:04:39,850 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 51 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:04:39,850 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 76 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 02:04:39,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-24 02:04:39,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 43. [2024-11-24 02:04:39,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 32 states have (on average 1.53125) internal successors, (49), 42 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:39,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2024-11-24 02:04:39,856 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 8 [2024-11-24 02:04:39,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:04:39,857 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2024-11-24 02:04:39,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:39,857 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2024-11-24 02:04:39,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-24 02:04:39,858 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:04:39,858 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:04:39,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 02:04:39,859 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:04:39,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:39,859 INFO L85 PathProgramCache]: Analyzing trace with hash 178583536, now seen corresponding path program 1 times [2024-11-24 02:04:39,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:39,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210366265] [2024-11-24 02:04:39,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:39,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:40,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:40,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:40,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210366265] [2024-11-24 02:04:40,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210366265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:04:40,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:04:40,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 02:04:40,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505587229] [2024-11-24 02:04:40,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:04:40,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 02:04:40,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:40,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 02:04:40,134 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 02:04:40,134 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:40,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:04:40,305 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2024-11-24 02:04:40,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 02:04:40,306 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-24 02:04:40,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:04:40,307 INFO L225 Difference]: With dead ends: 47 [2024-11-24 02:04:40,307 INFO L226 Difference]: Without dead ends: 47 [2024-11-24 02:04:40,316 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-24 02:04:40,317 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 22 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:04:40,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 106 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 02:04:40,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-24 02:04:40,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2024-11-24 02:04:40,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 45 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:40,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2024-11-24 02:04:40,327 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 8 [2024-11-24 02:04:40,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:04:40,327 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2024-11-24 02:04:40,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:40,327 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2024-11-24 02:04:40,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-24 02:04:40,328 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:04:40,328 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:04:40,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 02:04:40,329 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:04:40,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:40,329 INFO L85 PathProgramCache]: Analyzing trace with hash 631530201, now seen corresponding path program 1 times [2024-11-24 02:04:40,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:40,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845334000] [2024-11-24 02:04:40,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:40,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:40,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:40,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:40,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845334000] [2024-11-24 02:04:40,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845334000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:04:40,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:04:40,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 02:04:40,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268011532] [2024-11-24 02:04:40,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:04:40,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:04:40,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:40,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:04:40,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:04:40,419 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:40,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:04:40,475 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2024-11-24 02:04:40,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 02:04:40,475 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-24 02:04:40,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:04:40,476 INFO L225 Difference]: With dead ends: 64 [2024-11-24 02:04:40,476 INFO L226 Difference]: Without dead ends: 64 [2024-11-24 02:04:40,477 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:04:40,478 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 10 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 02:04:40,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 110 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 02:04:40,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-24 02:04:40,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2024-11-24 02:04:40,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 47 states have (on average 1.446808510638298) internal successors, (68), 57 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:40,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2024-11-24 02:04:40,484 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 10 [2024-11-24 02:04:40,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:04:40,484 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2024-11-24 02:04:40,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:40,485 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2024-11-24 02:04:40,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-24 02:04:40,485 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:04:40,485 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:04:40,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 02:04:40,486 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:04:40,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:40,486 INFO L85 PathProgramCache]: Analyzing trace with hash 631532380, now seen corresponding path program 1 times [2024-11-24 02:04:40,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:40,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081001587] [2024-11-24 02:04:40,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:40,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:40,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:40,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:40,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081001587] [2024-11-24 02:04:40,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081001587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:04:40,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:04:40,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 02:04:40,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926173064] [2024-11-24 02:04:40,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:04:40,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:04:40,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:40,759 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:04:40,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:04:40,760 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:40,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:04:40,795 INFO L93 Difference]: Finished difference Result 69 states and 80 transitions. [2024-11-24 02:04:40,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 02:04:40,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-24 02:04:40,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:04:40,797 INFO L225 Difference]: With dead ends: 69 [2024-11-24 02:04:40,801 INFO L226 Difference]: Without dead ends: 69 [2024-11-24 02:04:40,801 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:04:40,802 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 13 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 02:04:40,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 79 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 02:04:40,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-24 02:04:40,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2024-11-24 02:04:40,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 56 states have (on average 1.4285714285714286) internal successors, (80), 66 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:40,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2024-11-24 02:04:40,815 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 10 [2024-11-24 02:04:40,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:04:40,816 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2024-11-24 02:04:40,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:40,816 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2024-11-24 02:04:40,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-24 02:04:40,817 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:04:40,818 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:04:40,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 02:04:40,818 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:04:40,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:40,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1888429733, now seen corresponding path program 1 times [2024-11-24 02:04:40,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:40,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514488260] [2024-11-24 02:04:40,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:40,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:41,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:41,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:41,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514488260] [2024-11-24 02:04:41,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514488260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:04:41,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:04:41,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 02:04:41,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563064462] [2024-11-24 02:04:41,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:04:41,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 02:04:41,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:41,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 02:04:41,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 02:04:41,107 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:41,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:04:41,189 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2024-11-24 02:04:41,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 02:04:41,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-24 02:04:41,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:04:41,191 INFO L225 Difference]: With dead ends: 66 [2024-11-24 02:04:41,191 INFO L226 Difference]: Without dead ends: 66 [2024-11-24 02:04:41,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 02:04:41,192 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 32 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:04:41,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 80 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 02:04:41,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-24 02:04:41,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2024-11-24 02:04:41,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 56 states have (on average 1.375) internal successors, (77), 64 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:41,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2024-11-24 02:04:41,205 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 10 [2024-11-24 02:04:41,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:04:41,205 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 77 transitions. [2024-11-24 02:04:41,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:41,205 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 77 transitions. [2024-11-24 02:04:41,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-24 02:04:41,206 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:04:41,206 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:04:41,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 02:04:41,206 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:04:41,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:41,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1888429732, now seen corresponding path program 1 times [2024-11-24 02:04:41,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:41,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658652946] [2024-11-24 02:04:41,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:41,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:41,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:41,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:41,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:41,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658652946] [2024-11-24 02:04:41,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658652946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:04:41,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:04:41,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 02:04:41,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001697047] [2024-11-24 02:04:41,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:04:41,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 02:04:41,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:41,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 02:04:41,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-24 02:04:41,495 INFO L87 Difference]: Start difference. First operand 65 states and 77 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:41,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:04:41,643 INFO L93 Difference]: Finished difference Result 73 states and 87 transitions. [2024-11-24 02:04:41,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 02:04:41,645 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-24 02:04:41,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:04:41,645 INFO L225 Difference]: With dead ends: 73 [2024-11-24 02:04:41,645 INFO L226 Difference]: Without dead ends: 73 [2024-11-24 02:04:41,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-24 02:04:41,646 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 24 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:04:41,647 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 90 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 02:04:41,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-24 02:04:41,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2024-11-24 02:04:41,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 62 states have (on average 1.3709677419354838) internal successors, (85), 70 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:41,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2024-11-24 02:04:41,656 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 10 [2024-11-24 02:04:41,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:04:41,657 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2024-11-24 02:04:41,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:41,657 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2024-11-24 02:04:41,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-24 02:04:41,657 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:04:41,657 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:04:41,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 02:04:41,658 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:04:41,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:41,662 INFO L85 PathProgramCache]: Analyzing trace with hash -177814246, now seen corresponding path program 1 times [2024-11-24 02:04:41,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:41,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278387296] [2024-11-24 02:04:41,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:41,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:41,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:41,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:41,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:41,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278387296] [2024-11-24 02:04:41,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278387296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:04:41,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:04:41,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 02:04:41,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626475051] [2024-11-24 02:04:41,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:04:41,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 02:04:41,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:41,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 02:04:41,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-24 02:04:41,945 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:42,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:04:42,059 INFO L93 Difference]: Finished difference Result 86 states and 102 transitions. [2024-11-24 02:04:42,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 02:04:42,060 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-24 02:04:42,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:04:42,061 INFO L225 Difference]: With dead ends: 86 [2024-11-24 02:04:42,061 INFO L226 Difference]: Without dead ends: 86 [2024-11-24 02:04:42,061 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-24 02:04:42,062 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 24 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:04:42,062 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 100 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 02:04:42,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-24 02:04:42,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 71. [2024-11-24 02:04:42,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 62 states have (on average 1.3709677419354838) internal successors, (85), 70 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:42,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2024-11-24 02:04:42,076 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 10 [2024-11-24 02:04:42,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:04:42,077 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2024-11-24 02:04:42,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:42,081 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2024-11-24 02:04:42,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-24 02:04:42,082 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:04:42,082 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:04:42,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 02:04:42,082 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:04:42,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:42,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1897332705, now seen corresponding path program 1 times [2024-11-24 02:04:42,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:42,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030558424] [2024-11-24 02:04:42,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:42,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:42,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:42,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:42,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030558424] [2024-11-24 02:04:42,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030558424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:04:42,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:04:42,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 02:04:42,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767322812] [2024-11-24 02:04:42,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:04:42,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:04:42,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:42,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:04:42,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:04:42,280 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:42,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:04:42,315 INFO L93 Difference]: Finished difference Result 78 states and 91 transitions. [2024-11-24 02:04:42,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 02:04:42,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-24 02:04:42,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:04:42,316 INFO L225 Difference]: With dead ends: 78 [2024-11-24 02:04:42,316 INFO L226 Difference]: Without dead ends: 78 [2024-11-24 02:04:42,316 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:04:42,317 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 12 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 02:04:42,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 71 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 02:04:42,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-24 02:04:42,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2024-11-24 02:04:42,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 67 states have (on average 1.3582089552238805) internal successors, (91), 75 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:42,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 91 transitions. [2024-11-24 02:04:42,323 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 91 transitions. Word has length 11 [2024-11-24 02:04:42,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:04:42,323 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 91 transitions. [2024-11-24 02:04:42,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:42,323 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 91 transitions. [2024-11-24 02:04:42,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-24 02:04:42,324 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:04:42,324 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:04:42,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 02:04:42,324 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:04:42,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:42,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1588287965, now seen corresponding path program 1 times [2024-11-24 02:04:42,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:42,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477150939] [2024-11-24 02:04:42,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:42,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:42,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:42,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:42,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477150939] [2024-11-24 02:04:42,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477150939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:04:42,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:04:42,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 02:04:42,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487875396] [2024-11-24 02:04:42,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:04:42,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 02:04:42,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:42,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 02:04:42,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-24 02:04:42,529 INFO L87 Difference]: Start difference. First operand 76 states and 91 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:42,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:04:42,572 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2024-11-24 02:04:42,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 02:04:42,572 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-24 02:04:42,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:04:42,573 INFO L225 Difference]: With dead ends: 75 [2024-11-24 02:04:42,573 INFO L226 Difference]: Without dead ends: 75 [2024-11-24 02:04:42,574 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-24 02:04:42,575 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 33 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 02:04:42,575 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 51 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 02:04:42,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-24 02:04:42,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 70. [2024-11-24 02:04:42,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 62 states have (on average 1.3548387096774193) internal successors, (84), 69 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:42,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2024-11-24 02:04:42,585 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 11 [2024-11-24 02:04:42,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:04:42,585 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2024-11-24 02:04:42,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:42,586 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2024-11-24 02:04:42,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-24 02:04:42,586 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:04:42,586 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:04:42,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 02:04:42,587 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:04:42,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:42,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1099378263, now seen corresponding path program 1 times [2024-11-24 02:04:42,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:42,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634589341] [2024-11-24 02:04:42,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:42,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:42,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:42,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:42,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634589341] [2024-11-24 02:04:42,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634589341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:04:42,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900144873] [2024-11-24 02:04:42,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:42,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:04:42,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:04:42,955 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:04:42,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 02:04:43,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:43,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-24 02:04:43,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:04:43,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 02:04:43,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-24 02:04:43,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-24 02:04:43,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:43,557 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:04:43,916 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-24 02:04:43,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:43,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900144873] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:04:43,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:04:43,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2024-11-24 02:04:43,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885307683] [2024-11-24 02:04:43,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:04:43,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-24 02:04:43,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:43,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-24 02:04:43,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2024-11-24 02:04:43,997 INFO L87 Difference]: Start difference. First operand 70 states and 84 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:44,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:04:44,327 INFO L93 Difference]: Finished difference Result 73 states and 88 transitions. [2024-11-24 02:04:44,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 02:04:44,328 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-24 02:04:44,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:04:44,328 INFO L225 Difference]: With dead ends: 73 [2024-11-24 02:04:44,328 INFO L226 Difference]: Without dead ends: 73 [2024-11-24 02:04:44,329 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2024-11-24 02:04:44,330 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 29 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 02:04:44,330 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 141 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 02:04:44,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-24 02:04:44,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 65. [2024-11-24 02:04:44,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 58 states have (on average 1.3448275862068966) internal successors, (78), 64 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:44,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2024-11-24 02:04:44,338 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 12 [2024-11-24 02:04:44,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:04:44,339 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2024-11-24 02:04:44,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:44,339 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2024-11-24 02:04:44,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-24 02:04:44,340 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:04:44,340 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:04:44,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 02:04:44,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:04:44,541 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:04:44,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:44,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1669001217, now seen corresponding path program 1 times [2024-11-24 02:04:44,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:44,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289398967] [2024-11-24 02:04:44,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:44,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:44,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:44,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:44,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289398967] [2024-11-24 02:04:44,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289398967] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:04:44,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:04:44,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 02:04:44,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993730755] [2024-11-24 02:04:44,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:04:44,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 02:04:44,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:44,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 02:04:44,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 02:04:44,685 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:44,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:04:44,768 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2024-11-24 02:04:44,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 02:04:44,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-24 02:04:44,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:04:44,770 INFO L225 Difference]: With dead ends: 64 [2024-11-24 02:04:44,770 INFO L226 Difference]: Without dead ends: 64 [2024-11-24 02:04:44,770 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 02:04:44,771 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 26 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:04:44,771 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 80 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 02:04:44,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-24 02:04:44,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-24 02:04:44,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 58 states have (on average 1.3275862068965518) internal successors, (77), 63 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:44,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 77 transitions. [2024-11-24 02:04:44,777 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 77 transitions. Word has length 14 [2024-11-24 02:04:44,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:04:44,778 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 77 transitions. [2024-11-24 02:04:44,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:44,778 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 77 transitions. [2024-11-24 02:04:44,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-24 02:04:44,783 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:04:44,783 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:04:44,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 02:04:44,783 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:04:44,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:44,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1669001216, now seen corresponding path program 1 times [2024-11-24 02:04:44,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:44,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936503690] [2024-11-24 02:04:44,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:44,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:44,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:45,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:45,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:45,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936503690] [2024-11-24 02:04:45,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936503690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:04:45,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:04:45,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 02:04:45,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297001242] [2024-11-24 02:04:45,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:04:45,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 02:04:45,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:45,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 02:04:45,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 02:04:45,021 INFO L87 Difference]: Start difference. First operand 64 states and 77 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:45,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:04:45,145 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2024-11-24 02:04:45,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 02:04:45,145 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-24 02:04:45,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:04:45,146 INFO L225 Difference]: With dead ends: 71 [2024-11-24 02:04:45,146 INFO L226 Difference]: Without dead ends: 71 [2024-11-24 02:04:45,146 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-24 02:04:45,147 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 31 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:04:45,147 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 138 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 02:04:45,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-24 02:04:45,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2024-11-24 02:04:45,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 60 states have (on average 1.3166666666666667) internal successors, (79), 65 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:45,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2024-11-24 02:04:45,151 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 14 [2024-11-24 02:04:45,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:04:45,152 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2024-11-24 02:04:45,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:45,152 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2024-11-24 02:04:45,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-24 02:04:45,153 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:04:45,153 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:04:45,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 02:04:45,153 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:04:45,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:45,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1315344789, now seen corresponding path program 1 times [2024-11-24 02:04:45,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:45,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586224909] [2024-11-24 02:04:45,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:45,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:45,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:45,572 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:45,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:45,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586224909] [2024-11-24 02:04:45,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586224909] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:04:45,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289805097] [2024-11-24 02:04:45,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:45,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:04:45,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:04:45,576 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:04:45,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 02:04:45,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:45,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-24 02:04:45,663 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:04:45,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-24 02:04:45,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-24 02:04:46,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:46,128 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:04:46,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:46,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289805097] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:04:46,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:04:46,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-11-24 02:04:46,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660348071] [2024-11-24 02:04:46,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:04:46,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-24 02:04:46,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:46,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-24 02:04:46,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2024-11-24 02:04:46,543 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:47,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:04:47,069 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2024-11-24 02:04:47,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 02:04:47,070 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-24 02:04:47,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:04:47,072 INFO L225 Difference]: With dead ends: 75 [2024-11-24 02:04:47,072 INFO L226 Difference]: Without dead ends: 75 [2024-11-24 02:04:47,074 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=225, Invalid=477, Unknown=0, NotChecked=0, Total=702 [2024-11-24 02:04:47,075 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 38 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 02:04:47,075 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 175 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 02:04:47,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-24 02:04:47,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 59. [2024-11-24 02:04:47,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 54 states have (on average 1.2777777777777777) internal successors, (69), 58 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:47,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2024-11-24 02:04:47,082 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 14 [2024-11-24 02:04:47,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:04:47,083 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2024-11-24 02:04:47,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:47,083 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2024-11-24 02:04:47,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-24 02:04:47,084 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:04:47,086 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:04:47,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 02:04:47,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-24 02:04:47,291 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:04:47,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:47,291 INFO L85 PathProgramCache]: Analyzing trace with hash 61543571, now seen corresponding path program 1 times [2024-11-24 02:04:47,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:47,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733959686] [2024-11-24 02:04:47,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:47,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:47,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:47,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:47,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733959686] [2024-11-24 02:04:47,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733959686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:04:47,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:04:47,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 02:04:47,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617341419] [2024-11-24 02:04:47,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:04:47,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 02:04:47,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:47,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 02:04:47,622 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-24 02:04:47,622 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:47,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:04:47,704 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2024-11-24 02:04:47,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 02:04:47,705 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-24 02:04:47,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:04:47,705 INFO L225 Difference]: With dead ends: 58 [2024-11-24 02:04:47,706 INFO L226 Difference]: Without dead ends: 58 [2024-11-24 02:04:47,706 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-24 02:04:47,706 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 7 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:04:47,707 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 97 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 02:04:47,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-24 02:04:47,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 47. [2024-11-24 02:04:47,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 43 states have (on average 1.255813953488372) internal successors, (54), 46 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:47,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2024-11-24 02:04:47,709 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 14 [2024-11-24 02:04:47,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:04:47,710 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2024-11-24 02:04:47,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:47,710 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2024-11-24 02:04:47,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-24 02:04:47,711 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:04:47,715 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:04:47,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 02:04:47,716 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:04:47,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:47,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1621164036, now seen corresponding path program 1 times [2024-11-24 02:04:47,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:47,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668495284] [2024-11-24 02:04:47,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:47,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:47,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:47,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:47,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:47,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668495284] [2024-11-24 02:04:47,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668495284] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:04:47,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:04:47,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 02:04:47,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492495500] [2024-11-24 02:04:47,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:04:47,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 02:04:47,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:47,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 02:04:47,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 02:04:47,808 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:47,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:04:47,902 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2024-11-24 02:04:47,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 02:04:47,903 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-24 02:04:47,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:04:47,904 INFO L225 Difference]: With dead ends: 47 [2024-11-24 02:04:47,904 INFO L226 Difference]: Without dead ends: 47 [2024-11-24 02:04:47,904 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-24 02:04:47,905 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 35 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:04:47,905 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 90 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 02:04:47,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-24 02:04:47,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2024-11-24 02:04:47,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 45 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:47,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2024-11-24 02:04:47,908 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 17 [2024-11-24 02:04:47,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:04:47,908 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2024-11-24 02:04:47,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:47,908 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2024-11-24 02:04:47,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-24 02:04:47,909 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:04:47,909 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:04:47,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-24 02:04:47,910 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:04:47,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:47,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1621164037, now seen corresponding path program 1 times [2024-11-24 02:04:47,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:47,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085244338] [2024-11-24 02:04:47,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:47,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:47,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:48,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:48,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:48,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085244338] [2024-11-24 02:04:48,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085244338] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:04:48,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:04:48,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 02:04:48,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923253496] [2024-11-24 02:04:48,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:04:48,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 02:04:48,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:48,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 02:04:48,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-24 02:04:48,185 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:48,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:04:48,359 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2024-11-24 02:04:48,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 02:04:48,360 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 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 [2024-11-24 02:04:48,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:04:48,360 INFO L225 Difference]: With dead ends: 54 [2024-11-24 02:04:48,361 INFO L226 Difference]: Without dead ends: 54 [2024-11-24 02:04:48,361 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-24 02:04:48,362 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 27 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:04:48,362 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 135 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 02:04:48,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-24 02:04:48,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2024-11-24 02:04:48,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:48,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2024-11-24 02:04:48,365 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 17 [2024-11-24 02:04:48,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:04:48,365 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2024-11-24 02:04:48,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:48,365 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2024-11-24 02:04:48,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-24 02:04:48,366 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:04:48,366 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:04:48,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-24 02:04:48,366 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:04:48,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:48,367 INFO L85 PathProgramCache]: Analyzing trace with hash -449350258, now seen corresponding path program 1 times [2024-11-24 02:04:48,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:48,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703239378] [2024-11-24 02:04:48,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:48,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:48,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:48,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:48,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703239378] [2024-11-24 02:04:48,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703239378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:04:48,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:04:48,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 02:04:48,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138815326] [2024-11-24 02:04:48,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:04:48,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 02:04:48,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:48,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 02:04:48,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-24 02:04:48,682 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 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) [2024-11-24 02:04:48,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:04:48,803 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2024-11-24 02:04:48,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 02:04:48,804 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 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 22 [2024-11-24 02:04:48,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:04:48,805 INFO L225 Difference]: With dead ends: 72 [2024-11-24 02:04:48,805 INFO L226 Difference]: Without dead ends: 72 [2024-11-24 02:04:48,805 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-24 02:04:48,806 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 10 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:04:48,806 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 236 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 02:04:48,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-24 02:04:48,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2024-11-24 02:04:48,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 66 states have (on average 1.196969696969697) internal successors, (79), 68 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:48,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2024-11-24 02:04:48,810 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 22 [2024-11-24 02:04:48,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:04:48,811 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2024-11-24 02:04:48,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 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) [2024-11-24 02:04:48,811 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2024-11-24 02:04:48,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-24 02:04:48,812 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:04:48,812 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:04:48,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-24 02:04:48,812 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:04:48,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:48,813 INFO L85 PathProgramCache]: Analyzing trace with hash -449348080, now seen corresponding path program 1 times [2024-11-24 02:04:48,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:48,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853863107] [2024-11-24 02:04:48,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:48,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:49,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:49,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:49,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853863107] [2024-11-24 02:04:49,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853863107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:04:49,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:04:49,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 02:04:49,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097553504] [2024-11-24 02:04:49,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:04:49,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 02:04:49,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:49,126 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 02:04:49,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-24 02:04:49,127 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 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) [2024-11-24 02:04:49,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:04:49,268 INFO L93 Difference]: Finished difference Result 93 states and 103 transitions. [2024-11-24 02:04:49,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 02:04:49,268 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 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 22 [2024-11-24 02:04:49,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:04:49,269 INFO L225 Difference]: With dead ends: 93 [2024-11-24 02:04:49,269 INFO L226 Difference]: Without dead ends: 93 [2024-11-24 02:04:49,269 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-24 02:04:49,270 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 14 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:04:49,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 207 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 02:04:49,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-24 02:04:49,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 78. [2024-11-24 02:04:49,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 75 states have (on average 1.1733333333333333) internal successors, (88), 77 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:49,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 88 transitions. [2024-11-24 02:04:49,274 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 88 transitions. Word has length 22 [2024-11-24 02:04:49,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:04:49,274 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 88 transitions. [2024-11-24 02:04:49,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 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) [2024-11-24 02:04:49,274 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 88 transitions. [2024-11-24 02:04:49,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-24 02:04:49,275 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:04:49,275 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:04:49,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-24 02:04:49,276 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:04:49,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:49,276 INFO L85 PathProgramCache]: Analyzing trace with hash -449283983, now seen corresponding path program 1 times [2024-11-24 02:04:49,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:49,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779086547] [2024-11-24 02:04:49,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:49,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:49,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:49,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:49,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779086547] [2024-11-24 02:04:49,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779086547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:04:49,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:04:49,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 02:04:49,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316822501] [2024-11-24 02:04:49,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:04:49,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:04:49,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:49,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:04:49,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:04:49,474 INFO L87 Difference]: Start difference. First operand 78 states and 88 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 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) [2024-11-24 02:04:49,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:04:49,505 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2024-11-24 02:04:49,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 02:04:49,506 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 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 22 [2024-11-24 02:04:49,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:04:49,507 INFO L225 Difference]: With dead ends: 77 [2024-11-24 02:04:49,507 INFO L226 Difference]: Without dead ends: 54 [2024-11-24 02:04:49,507 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:04:49,508 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 15 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 02:04:49,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 54 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 02:04:49,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-24 02:04:49,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-24 02:04:49,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 52 states have (on average 1.1538461538461537) internal successors, (60), 53 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:49,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2024-11-24 02:04:49,511 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 22 [2024-11-24 02:04:49,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:04:49,512 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2024-11-24 02:04:49,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 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) [2024-11-24 02:04:49,512 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2024-11-24 02:04:49,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-24 02:04:49,513 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:04:49,513 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:04:49,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-24 02:04:49,513 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:04:49,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:49,514 INFO L85 PathProgramCache]: Analyzing trace with hash -2138291822, now seen corresponding path program 1 times [2024-11-24 02:04:49,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:49,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915753588] [2024-11-24 02:04:49,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:49,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:49,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:49,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:49,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915753588] [2024-11-24 02:04:49,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915753588] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:04:49,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:04:49,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-24 02:04:49,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439772842] [2024-11-24 02:04:49,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:04:49,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 02:04:49,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:49,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 02:04:49,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-24 02:04:49,874 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 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) [2024-11-24 02:04:50,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:04:50,037 INFO L93 Difference]: Finished difference Result 84 states and 90 transitions. [2024-11-24 02:04:50,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 02:04:50,038 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 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 22 [2024-11-24 02:04:50,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:04:50,039 INFO L225 Difference]: With dead ends: 84 [2024-11-24 02:04:50,039 INFO L226 Difference]: Without dead ends: 62 [2024-11-24 02:04:50,039 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2024-11-24 02:04:50,040 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 22 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:04:50,040 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 178 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 02:04:50,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-24 02:04:50,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2024-11-24 02:04:50,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 54 states have (on average 1.1481481481481481) internal successors, (62), 55 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:50,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2024-11-24 02:04:50,043 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 22 [2024-11-24 02:04:50,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:04:50,044 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2024-11-24 02:04:50,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 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) [2024-11-24 02:04:50,044 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2024-11-24 02:04:50,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-24 02:04:50,045 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:04:50,045 INFO L218 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] [2024-11-24 02:04:50,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-24 02:04:50,045 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:04:50,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:50,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1076204469, now seen corresponding path program 1 times [2024-11-24 02:04:50,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:50,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663003701] [2024-11-24 02:04:50,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:50,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:50,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:50,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:50,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:50,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663003701] [2024-11-24 02:04:50,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663003701] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:04:50,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285084356] [2024-11-24 02:04:50,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:50,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:04:50,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:04:50,534 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:04:50,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 02:04:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:50,648 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-24 02:04:50,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:04:50,872 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:50,873 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:04:51,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-24 02:04:51,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:51,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285084356] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:04:51,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:04:51,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 23 [2024-11-24 02:04:51,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735638725] [2024-11-24 02:04:51,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:04:51,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-24 02:04:51,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:51,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-24 02:04:51,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2024-11-24 02:04:51,248 INFO L87 Difference]: Start difference. First operand 56 states and 62 transitions. Second operand has 24 states, 23 states have (on average 2.391304347826087) internal successors, (55), 24 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:51,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:04:51,657 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2024-11-24 02:04:51,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 02:04:51,662 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.391304347826087) internal successors, (55), 24 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-24 02:04:51,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:04:51,662 INFO L225 Difference]: With dead ends: 76 [2024-11-24 02:04:51,662 INFO L226 Difference]: Without dead ends: 76 [2024-11-24 02:04:51,663 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=117, Invalid=695, Unknown=0, NotChecked=0, Total=812 [2024-11-24 02:04:51,665 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 55 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 02:04:51,665 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 236 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 02:04:51,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-24 02:04:51,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 66. [2024-11-24 02:04:51,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 64 states have (on average 1.140625) internal successors, (73), 65 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:51,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2024-11-24 02:04:51,668 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 26 [2024-11-24 02:04:51,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:04:51,668 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2024-11-24 02:04:51,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.391304347826087) internal successors, (55), 24 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:51,669 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2024-11-24 02:04:51,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-24 02:04:51,669 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:04:51,669 INFO L218 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] [2024-11-24 02:04:51,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 02:04:51,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-24 02:04:51,871 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:04:51,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:51,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1210220153, now seen corresponding path program 1 times [2024-11-24 02:04:51,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:51,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740645339] [2024-11-24 02:04:51,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:51,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:51,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:52,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 02:04:52,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:52,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740645339] [2024-11-24 02:04:52,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740645339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:04:52,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:04:52,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-24 02:04:52,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608942332] [2024-11-24 02:04:52,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:04:52,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 02:04:52,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:52,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 02:04:52,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-24 02:04:52,278 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:52,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:04:52,391 INFO L93 Difference]: Finished difference Result 96 states and 105 transitions. [2024-11-24 02:04:52,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 02:04:52,392 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-24 02:04:52,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:04:52,392 INFO L225 Difference]: With dead ends: 96 [2024-11-24 02:04:52,393 INFO L226 Difference]: Without dead ends: 96 [2024-11-24 02:04:52,393 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-24 02:04:52,393 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 22 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:04:52,394 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 167 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 02:04:52,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-24 02:04:52,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 67. [2024-11-24 02:04:52,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 65 states have (on average 1.1538461538461537) internal successors, (75), 66 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:52,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2024-11-24 02:04:52,397 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 26 [2024-11-24 02:04:52,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:04:52,397 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2024-11-24 02:04:52,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:52,398 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2024-11-24 02:04:52,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-24 02:04:52,398 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:04:52,398 INFO L218 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] [2024-11-24 02:04:52,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-24 02:04:52,399 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:04:52,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:52,399 INFO L85 PathProgramCache]: Analyzing trace with hash 674016768, now seen corresponding path program 1 times [2024-11-24 02:04:52,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:52,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128770824] [2024-11-24 02:04:52,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:52,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:52,748 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 02:04:52,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:52,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128770824] [2024-11-24 02:04:52,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128770824] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:04:52,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467712834] [2024-11-24 02:04:52,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:52,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:04:52,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:04:52,752 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:04:52,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 02:04:52,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:52,865 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-24 02:04:52,867 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:04:53,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 02:04:53,042 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:04:53,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-24 02:04:53,320 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 02:04:53,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467712834] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:04:53,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:04:53,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2024-11-24 02:04:53,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592677693] [2024-11-24 02:04:53,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:04:53,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-24 02:04:53,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:53,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-24 02:04:53,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2024-11-24 02:04:53,323 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:53,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:04:53,561 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2024-11-24 02:04:53,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 02:04:53,562 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-24 02:04:53,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:04:53,563 INFO L225 Difference]: With dead ends: 86 [2024-11-24 02:04:53,563 INFO L226 Difference]: Without dead ends: 86 [2024-11-24 02:04:53,563 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2024-11-24 02:04:53,564 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 13 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 02:04:53,564 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 311 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 02:04:53,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-24 02:04:53,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 82. [2024-11-24 02:04:53,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 80 states have (on average 1.1625) internal successors, (93), 81 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:53,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2024-11-24 02:04:53,568 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 30 [2024-11-24 02:04:53,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:04:53,568 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 93 transitions. [2024-11-24 02:04:53,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:53,568 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions. [2024-11-24 02:04:53,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-24 02:04:53,569 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:04:53,569 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:04:53,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 02:04:53,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-24 02:04:53,774 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:04:53,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:53,775 INFO L85 PathProgramCache]: Analyzing trace with hash -462107254, now seen corresponding path program 2 times [2024-11-24 02:04:53,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:53,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131385500] [2024-11-24 02:04:53,775 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 02:04:53,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:53,822 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 02:04:53,823 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:04:54,429 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:54,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:54,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131385500] [2024-11-24 02:04:54,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131385500] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:04:54,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555008455] [2024-11-24 02:04:54,430 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 02:04:54,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:04:54,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:04:54,433 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:04:54,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 02:04:54,557 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 02:04:54,558 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:04:54,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-24 02:04:54,564 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:04:54,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-24 02:04:54,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 02:04:55,118 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:55,120 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:04:55,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-24 02:04:55,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-24 02:04:55,425 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:55,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555008455] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:04:55,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:04:55,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 13] total 33 [2024-11-24 02:04:55,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983748063] [2024-11-24 02:04:55,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:04:55,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-24 02:04:55,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:55,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-24 02:04:55,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=944, Unknown=0, NotChecked=0, Total=1056 [2024-11-24 02:04:55,430 INFO L87 Difference]: Start difference. First operand 82 states and 93 transitions. Second operand has 33 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 33 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:56,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:04:56,386 INFO L93 Difference]: Finished difference Result 165 states and 179 transitions. [2024-11-24 02:04:56,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-24 02:04:56,387 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 33 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-24 02:04:56,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:04:56,387 INFO L225 Difference]: With dead ends: 165 [2024-11-24 02:04:56,388 INFO L226 Difference]: Without dead ends: 134 [2024-11-24 02:04:56,389 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=272, Invalid=2484, Unknown=0, NotChecked=0, Total=2756 [2024-11-24 02:04:56,390 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 82 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 02:04:56,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 345 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 02:04:56,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-24 02:04:56,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 112. [2024-11-24 02:04:56,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 111 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:56,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 125 transitions. [2024-11-24 02:04:56,398 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 125 transitions. Word has length 31 [2024-11-24 02:04:56,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:04:56,398 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 125 transitions. [2024-11-24 02:04:56,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 33 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:56,398 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 125 transitions. [2024-11-24 02:04:56,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-24 02:04:56,398 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:04:56,398 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:04:56,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 02:04:56,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:04:56,605 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:04:56,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:56,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1836539151, now seen corresponding path program 3 times [2024-11-24 02:04:56,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:56,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524009242] [2024-11-24 02:04:56,606 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 02:04:56,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:56,664 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-24 02:04:56,664 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:04:57,179 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:57,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:57,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524009242] [2024-11-24 02:04:57,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524009242] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:04:57,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418619535] [2024-11-24 02:04:57,180 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 02:04:57,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:04:57,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:04:57,182 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:04:57,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 02:04:57,303 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-24 02:04:57,304 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:04:57,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-24 02:04:57,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:04:57,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-24 02:04:57,576 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:57,576 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:04:58,053 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:58,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418619535] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:04:58,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:04:58,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 29 [2024-11-24 02:04:58,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108308641] [2024-11-24 02:04:58,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:04:58,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-24 02:04:58,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:58,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-24 02:04:58,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=773, Unknown=0, NotChecked=0, Total=870 [2024-11-24 02:04:58,058 INFO L87 Difference]: Start difference. First operand 112 states and 125 transitions. Second operand has 30 states, 29 states have (on average 2.9310344827586206) internal successors, (85), 30 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:58,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:04:58,743 INFO L93 Difference]: Finished difference Result 140 states and 154 transitions. [2024-11-24 02:04:58,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 02:04:58,744 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.9310344827586206) internal successors, (85), 30 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-24 02:04:58,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:04:58,745 INFO L225 Difference]: With dead ends: 140 [2024-11-24 02:04:58,745 INFO L226 Difference]: Without dead ends: 140 [2024-11-24 02:04:58,746 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=164, Invalid=1168, Unknown=0, NotChecked=0, Total=1332 [2024-11-24 02:04:58,747 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 50 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 02:04:58,747 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 445 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 02:04:58,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-24 02:04:58,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 127. [2024-11-24 02:04:58,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 125 states have (on average 1.136) internal successors, (142), 126 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:58,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 142 transitions. [2024-11-24 02:04:58,754 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 142 transitions. Word has length 35 [2024-11-24 02:04:58,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:04:58,754 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 142 transitions. [2024-11-24 02:04:58,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.9310344827586206) internal successors, (85), 30 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:58,756 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 142 transitions. [2024-11-24 02:04:58,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-24 02:04:58,757 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:04:58,757 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:04:58,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 02:04:58,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-24 02:04:58,962 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:04:58,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:58,962 INFO L85 PathProgramCache]: Analyzing trace with hash 375460750, now seen corresponding path program 2 times [2024-11-24 02:04:58,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:58,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518466610] [2024-11-24 02:04:58,963 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 02:04:58,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:58,989 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 02:04:58,990 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:05:00,020 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 02:05:00,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:00,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518466610] [2024-11-24 02:05:00,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518466610] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:05:00,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759067110] [2024-11-24 02:05:00,021 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 02:05:00,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:05:00,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:05:00,023 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:05:00,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 02:05:00,141 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 02:05:00,141 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:05:00,143 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-24 02:05:00,145 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:05:00,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 02:05:00,641 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 02:05:00,641 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:05:00,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-24 02:05:00,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-24 02:05:00,825 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 02:05:00,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759067110] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:05:00,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:05:00,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 13, 13] total 35 [2024-11-24 02:05:00,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236579991] [2024-11-24 02:05:00,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:05:00,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-24 02:05:00,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:00,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-24 02:05:00,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1094, Unknown=0, NotChecked=0, Total=1190 [2024-11-24 02:05:00,828 INFO L87 Difference]: Start difference. First operand 127 states and 142 transitions. Second operand has 35 states, 35 states have (on average 2.2285714285714286) internal successors, (78), 35 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:02,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:05:02,895 INFO L93 Difference]: Finished difference Result 210 states and 230 transitions. [2024-11-24 02:05:02,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-24 02:05:02,896 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.2285714285714286) internal successors, (78), 35 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-24 02:05:02,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:05:02,897 INFO L225 Difference]: With dead ends: 210 [2024-11-24 02:05:02,897 INFO L226 Difference]: Without dead ends: 190 [2024-11-24 02:05:02,899 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=300, Invalid=3006, Unknown=0, NotChecked=0, Total=3306 [2024-11-24 02:05:02,900 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 58 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 02:05:02,900 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 604 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 02:05:02,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-24 02:05:02,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 165. [2024-11-24 02:05:02,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 163 states have (on average 1.1411042944785277) internal successors, (186), 164 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:02,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 186 transitions. [2024-11-24 02:05:02,911 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 186 transitions. Word has length 38 [2024-11-24 02:05:02,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:05:02,911 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 186 transitions. [2024-11-24 02:05:02,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.2285714285714286) internal successors, (78), 35 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:02,911 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 186 transitions. [2024-11-24 02:05:02,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-24 02:05:02,912 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:05:02,912 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:05:02,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 02:05:03,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-24 02:05:03,115 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:05:03,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:03,116 INFO L85 PathProgramCache]: Analyzing trace with hash -813904220, now seen corresponding path program 4 times [2024-11-24 02:05:03,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:03,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863922650] [2024-11-24 02:05:03,116 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 02:05:03,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:03,140 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 02:05:03,141 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:05:03,559 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:03,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:03,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863922650] [2024-11-24 02:05:03,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863922650] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:05:03,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315964778] [2024-11-24 02:05:03,560 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 02:05:03,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:05:03,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:05:03,562 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:05:03,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 02:05:03,679 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 02:05:03,679 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:05:03,681 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-24 02:05:03,683 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:05:03,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 02:05:03,788 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:03,788 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:05:03,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-24 02:05:03,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-24 02:05:03,925 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:03,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315964778] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:05:03,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:05:03,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 18 [2024-11-24 02:05:03,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817680700] [2024-11-24 02:05:03,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:05:03,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-24 02:05:03,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:03,926 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-24 02:05:03,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-24 02:05:03,927 INFO L87 Difference]: Start difference. First operand 165 states and 186 transitions. Second operand has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:04,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:05:04,275 INFO L93 Difference]: Finished difference Result 281 states and 307 transitions. [2024-11-24 02:05:04,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 02:05:04,277 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-24 02:05:04,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:05:04,278 INFO L225 Difference]: With dead ends: 281 [2024-11-24 02:05:04,278 INFO L226 Difference]: Without dead ends: 225 [2024-11-24 02:05:04,279 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2024-11-24 02:05:04,281 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 36 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 02:05:04,281 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 433 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 02:05:04,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-24 02:05:04,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 209. [2024-11-24 02:05:04,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 207 states have (on average 1.1304347826086956) internal successors, (234), 208 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:04,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 234 transitions. [2024-11-24 02:05:04,292 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 234 transitions. Word has length 40 [2024-11-24 02:05:04,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:05:04,293 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 234 transitions. [2024-11-24 02:05:04,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:04,293 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 234 transitions. [2024-11-24 02:05:04,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-24 02:05:04,297 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:05:04,298 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:05:04,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-24 02:05:04,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-24 02:05:04,499 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:05:04,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:04,499 INFO L85 PathProgramCache]: Analyzing trace with hash -918793593, now seen corresponding path program 3 times [2024-11-24 02:05:04,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:04,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281961560] [2024-11-24 02:05:04,499 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 02:05:04,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:04,522 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-24 02:05:04,523 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:05:05,037 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 02:05:05,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:05,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281961560] [2024-11-24 02:05:05,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281961560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:05:05,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789977116] [2024-11-24 02:05:05,037 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 02:05:05,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:05:05,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:05:05,043 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:05:05,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 02:05:05,188 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-24 02:05:05,188 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:05:05,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-24 02:05:05,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:05:05,697 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:05,698 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:05:06,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-24 02:05:06,337 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:06,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789977116] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:05:06,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:05:06,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 12] total 33 [2024-11-24 02:05:06,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110292510] [2024-11-24 02:05:06,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:05:06,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-24 02:05:06,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:06,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-24 02:05:06,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=992, Unknown=0, NotChecked=0, Total=1122 [2024-11-24 02:05:06,340 INFO L87 Difference]: Start difference. First operand 209 states and 234 transitions. Second operand has 34 states, 33 states have (on average 3.5454545454545454) internal successors, (117), 34 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:07,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:05:07,148 INFO L93 Difference]: Finished difference Result 252 states and 280 transitions. [2024-11-24 02:05:07,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 02:05:07,149 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 3.5454545454545454) internal successors, (117), 34 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-24 02:05:07,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:05:07,150 INFO L225 Difference]: With dead ends: 252 [2024-11-24 02:05:07,150 INFO L226 Difference]: Without dead ends: 252 [2024-11-24 02:05:07,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=212, Invalid=1594, Unknown=0, NotChecked=0, Total=1806 [2024-11-24 02:05:07,152 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 21 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 02:05:07,155 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 584 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 02:05:07,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-11-24 02:05:07,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 250. [2024-11-24 02:05:07,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 248 states have (on average 1.1290322580645162) internal successors, (280), 249 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:07,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 280 transitions. [2024-11-24 02:05:07,170 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 280 transitions. Word has length 42 [2024-11-24 02:05:07,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:05:07,170 INFO L471 AbstractCegarLoop]: Abstraction has 250 states and 280 transitions. [2024-11-24 02:05:07,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 3.5454545454545454) internal successors, (117), 34 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:07,170 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 280 transitions. [2024-11-24 02:05:07,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-24 02:05:07,171 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:05:07,171 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:05:07,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-24 02:05:07,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-24 02:05:07,372 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:05:07,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:07,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1418388195, now seen corresponding path program 5 times [2024-11-24 02:05:07,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:07,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507728506] [2024-11-24 02:05:07,373 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 02:05:07,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:07,395 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-24 02:05:07,395 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:05:07,878 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:07,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:07,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507728506] [2024-11-24 02:05:07,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507728506] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:05:07,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449224163] [2024-11-24 02:05:07,879 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 02:05:07,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:05:07,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:05:07,882 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:05:07,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 02:05:08,022 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-24 02:05:08,022 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:05:08,024 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-24 02:05:08,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:05:08,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-24 02:05:08,377 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:08,377 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:05:09,058 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:09,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449224163] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:05:09,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:05:09,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 35 [2024-11-24 02:05:09,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560019555] [2024-11-24 02:05:09,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:05:09,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-24 02:05:09,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:09,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-24 02:05:09,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1092, Unknown=0, NotChecked=0, Total=1260 [2024-11-24 02:05:09,061 INFO L87 Difference]: Start difference. First operand 250 states and 280 transitions. Second operand has 36 states, 35 states have (on average 3.1714285714285713) internal successors, (111), 36 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:09,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:05:09,658 INFO L93 Difference]: Finished difference Result 312 states and 345 transitions. [2024-11-24 02:05:09,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-24 02:05:09,658 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 3.1714285714285713) internal successors, (111), 36 states have internal predecessors, (111), 0 states have call successors, (0), 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 44 [2024-11-24 02:05:09,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:05:09,660 INFO L225 Difference]: With dead ends: 312 [2024-11-24 02:05:09,660 INFO L226 Difference]: Without dead ends: 312 [2024-11-24 02:05:09,661 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=259, Invalid=1721, Unknown=0, NotChecked=0, Total=1980 [2024-11-24 02:05:09,662 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 93 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 02:05:09,662 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 450 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 02:05:09,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-11-24 02:05:09,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 275. [2024-11-24 02:05:09,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 273 states have (on average 1.1318681318681318) internal successors, (309), 274 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:09,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 309 transitions. [2024-11-24 02:05:09,680 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 309 transitions. Word has length 44 [2024-11-24 02:05:09,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:05:09,680 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 309 transitions. [2024-11-24 02:05:09,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 3.1714285714285713) internal successors, (111), 36 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:09,680 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 309 transitions. [2024-11-24 02:05:09,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-24 02:05:09,681 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:05:09,681 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:05:09,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-24 02:05:09,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:05:09,882 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:05:09,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:09,883 INFO L85 PathProgramCache]: Analyzing trace with hash -463351816, now seen corresponding path program 6 times [2024-11-24 02:05:09,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:09,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286956106] [2024-11-24 02:05:09,883 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 02:05:09,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:09,944 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-24 02:05:09,944 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:05:10,556 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 11 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:10,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:10,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286956106] [2024-11-24 02:05:10,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286956106] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:05:10,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905027901] [2024-11-24 02:05:10,557 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 02:05:10,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:05:10,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:05:10,560 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:05:10,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 02:05:10,843 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-24 02:05:10,844 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:05:10,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-11-24 02:05:10,852 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:05:11,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-24 02:05:11,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 02:05:11,481 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-24 02:05:11,485 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 02:05:11,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 10 [2024-11-24 02:05:11,623 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 11 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:11,623 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:05:11,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-24 02:05:11,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-24 02:05:12,180 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 11 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:12,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905027901] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:05:12,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:05:12,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22, 19] total 43 [2024-11-24 02:05:12,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596838562] [2024-11-24 02:05:12,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:05:12,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-24 02:05:12,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:12,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-24 02:05:12,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1657, Unknown=0, NotChecked=0, Total=1806 [2024-11-24 02:05:12,183 INFO L87 Difference]: Start difference. First operand 275 states and 309 transitions. Second operand has 43 states, 43 states have (on average 2.302325581395349) internal successors, (99), 43 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:13,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:05:13,574 INFO L93 Difference]: Finished difference Result 478 states and 524 transitions. [2024-11-24 02:05:13,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-24 02:05:13,575 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.302325581395349) internal successors, (99), 43 states have internal predecessors, (99), 0 states have call successors, (0), 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 49 [2024-11-24 02:05:13,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:05:13,576 INFO L225 Difference]: With dead ends: 478 [2024-11-24 02:05:13,576 INFO L226 Difference]: Without dead ends: 398 [2024-11-24 02:05:13,578 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=387, Invalid=4443, Unknown=0, NotChecked=0, Total=4830 [2024-11-24 02:05:13,579 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 137 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 02:05:13,579 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 800 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 02:05:13,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2024-11-24 02:05:13,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 347. [2024-11-24 02:05:13,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 345 states have (on average 1.127536231884058) internal successors, (389), 346 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:13,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 389 transitions. [2024-11-24 02:05:13,591 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 389 transitions. Word has length 49 [2024-11-24 02:05:13,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:05:13,592 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 389 transitions. [2024-11-24 02:05:13,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.302325581395349) internal successors, (99), 43 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:13,592 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 389 transitions. [2024-11-24 02:05:13,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-24 02:05:13,593 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:05:13,593 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:05:13,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-24 02:05:13,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-24 02:05:13,793 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:05:13,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:13,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1067663637, now seen corresponding path program 4 times [2024-11-24 02:05:13,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:13,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565232761] [2024-11-24 02:05:13,794 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 02:05:13,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:13,819 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 02:05:13,819 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:05:16,145 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 5 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 02:05:16,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:16,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565232761] [2024-11-24 02:05:16,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565232761] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:05:16,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341569561] [2024-11-24 02:05:16,145 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 02:05:16,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:05:16,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:05:16,148 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:05:16,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-24 02:05:16,275 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 02:05:16,275 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:05:16,277 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-24 02:05:16,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:05:16,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-24 02:05:19,109 INFO L349 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2024-11-24 02:05:19,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 42 [2024-11-24 02:05:19,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-24 02:05:19,744 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-24 02:05:19,744 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:05:20,959 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 02:05:20,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 24 [2024-11-24 02:05:22,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 49 [2024-11-24 02:05:22,612 INFO L378 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 0 case distinctions, treesize of input 126 treesize of output 104 [2024-11-24 02:05:22,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-24 02:05:22,667 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-24 02:05:22,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341569561] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:05:22,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:05:22,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25, 25] total 72 [2024-11-24 02:05:22,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794259576] [2024-11-24 02:05:22,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:05:22,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-24 02:05:22,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:22,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-24 02:05:22,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=4920, Unknown=1, NotChecked=0, Total=5256 [2024-11-24 02:05:22,670 INFO L87 Difference]: Start difference. First operand 347 states and 389 transitions. Second operand has 73 states, 72 states have (on average 1.5555555555555556) internal successors, (112), 73 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:30,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:05:30,886 INFO L93 Difference]: Finished difference Result 431 states and 472 transitions. [2024-11-24 02:05:30,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-24 02:05:30,887 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 72 states have (on average 1.5555555555555556) internal successors, (112), 73 states have internal predecessors, (112), 0 states have call successors, (0), 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 50 [2024-11-24 02:05:30,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:05:30,888 INFO L225 Difference]: With dead ends: 431 [2024-11-24 02:05:30,889 INFO L226 Difference]: Without dead ends: 262 [2024-11-24 02:05:30,895 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2956 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=1011, Invalid=11870, Unknown=1, NotChecked=0, Total=12882 [2024-11-24 02:05:30,896 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 32 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 1917 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 1931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-24 02:05:30,900 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 432 Invalid, 1931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1917 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-24 02:05:30,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-11-24 02:05:30,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 159. [2024-11-24 02:05:30,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.1139240506329113) internal successors, (176), 158 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:30,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 176 transitions. [2024-11-24 02:05:30,922 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 176 transitions. Word has length 50 [2024-11-24 02:05:30,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:05:30,922 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 176 transitions. [2024-11-24 02:05:30,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 72 states have (on average 1.5555555555555556) internal successors, (112), 73 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:30,923 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 176 transitions. [2024-11-24 02:05:30,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-24 02:05:30,924 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:05:30,924 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:05:30,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-24 02:05:31,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-24 02:05:31,125 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:05:31,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:31,126 INFO L85 PathProgramCache]: Analyzing trace with hash -694699617, now seen corresponding path program 7 times [2024-11-24 02:05:31,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:31,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718705852] [2024-11-24 02:05:31,127 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 02:05:31,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:31,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:05:31,842 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 6 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:31,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:31,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718705852] [2024-11-24 02:05:31,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718705852] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:05:31,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225749197] [2024-11-24 02:05:31,843 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 02:05:31,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:05:31,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:05:31,845 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:05:31,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-24 02:05:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:05:31,991 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-24 02:05:31,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:05:32,360 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 15 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:32,360 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:05:32,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-24 02:05:32,873 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 15 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:32,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225749197] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:05:32,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:05:32,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 34 [2024-11-24 02:05:32,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130110469] [2024-11-24 02:05:32,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:05:32,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-24 02:05:32,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:32,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-24 02:05:32,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1064, Unknown=0, NotChecked=0, Total=1190 [2024-11-24 02:05:32,875 INFO L87 Difference]: Start difference. First operand 159 states and 176 transitions. Second operand has 35 states, 34 states have (on average 3.2058823529411766) internal successors, (109), 35 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:33,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:05:33,575 INFO L93 Difference]: Finished difference Result 198 states and 217 transitions. [2024-11-24 02:05:33,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-24 02:05:33,576 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 3.2058823529411766) internal successors, (109), 35 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-24 02:05:33,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:05:33,577 INFO L225 Difference]: With dead ends: 198 [2024-11-24 02:05:33,577 INFO L226 Difference]: Without dead ends: 198 [2024-11-24 02:05:33,577 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 82 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=238, Invalid=1832, Unknown=0, NotChecked=0, Total=2070 [2024-11-24 02:05:33,578 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 105 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 02:05:33,578 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 557 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 02:05:33,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-24 02:05:33,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 174. [2024-11-24 02:05:33,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.115606936416185) internal successors, (193), 173 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:33,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 193 transitions. [2024-11-24 02:05:33,584 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 193 transitions. Word has length 53 [2024-11-24 02:05:33,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:05:33,584 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 193 transitions. [2024-11-24 02:05:33,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 3.2058823529411766) internal successors, (109), 35 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:33,585 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 193 transitions. [2024-11-24 02:05:33,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-24 02:05:33,585 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:05:33,585 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:05:33,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-24 02:05:33,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:05:33,790 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:05:33,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:33,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1884730550, now seen corresponding path program 8 times [2024-11-24 02:05:33,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:33,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924100019] [2024-11-24 02:05:33,790 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 02:05:33,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:33,811 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 02:05:33,812 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:05:34,366 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 14 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:34,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:34,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924100019] [2024-11-24 02:05:34,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924100019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:05:34,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644423193] [2024-11-24 02:05:34,366 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 02:05:34,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:05:34,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:05:34,368 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:05:34,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-24 02:05:34,489 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 02:05:34,489 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:05:34,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-11-24 02:05:34,494 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:05:34,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-24 02:05:34,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 02:05:35,122 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-24 02:05:35,125 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 02:05:35,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 10 [2024-11-24 02:05:35,900 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-24 02:05:35,902 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 02:05:35,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2024-11-24 02:05:35,907 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 14 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:35,907 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:05:36,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-24 02:05:36,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-24 02:05:37,121 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 14 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:37,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644423193] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:05:37,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:05:37,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 25, 23] total 56 [2024-11-24 02:05:37,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930727238] [2024-11-24 02:05:37,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:05:37,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-24 02:05:37,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:37,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-24 02:05:37,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=2865, Unknown=0, NotChecked=0, Total=3080 [2024-11-24 02:05:37,124 INFO L87 Difference]: Start difference. First operand 174 states and 193 transitions. Second operand has 56 states, 56 states have (on average 2.4642857142857144) internal successors, (138), 56 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:39,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:05:39,185 INFO L93 Difference]: Finished difference Result 346 states and 375 transitions. [2024-11-24 02:05:39,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-24 02:05:39,186 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.4642857142857144) internal successors, (138), 56 states have internal predecessors, (138), 0 states have call successors, (0), 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 58 [2024-11-24 02:05:39,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:05:39,187 INFO L225 Difference]: With dead ends: 346 [2024-11-24 02:05:39,187 INFO L226 Difference]: Without dead ends: 222 [2024-11-24 02:05:39,189 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1756 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=519, Invalid=6963, Unknown=0, NotChecked=0, Total=7482 [2024-11-24 02:05:39,189 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 149 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 02:05:39,190 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 915 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 02:05:39,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-24 02:05:39,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 186. [2024-11-24 02:05:39,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.1081081081081081) internal successors, (205), 185 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:39,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 205 transitions. [2024-11-24 02:05:39,195 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 205 transitions. Word has length 58 [2024-11-24 02:05:39,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:05:39,195 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 205 transitions. [2024-11-24 02:05:39,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.4642857142857144) internal successors, (138), 56 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:39,196 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 205 transitions. [2024-11-24 02:05:39,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-24 02:05:39,196 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:05:39,196 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:05:39,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-24 02:05:39,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:05:39,397 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:05:39,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:39,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1570748143, now seen corresponding path program 9 times [2024-11-24 02:05:39,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:39,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053893438] [2024-11-24 02:05:39,398 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 02:05:39,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:39,427 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-24 02:05:39,427 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:05:40,147 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 15 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:40,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:40,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053893438] [2024-11-24 02:05:40,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053893438] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:05:40,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546524576] [2024-11-24 02:05:40,147 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 02:05:40,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:05:40,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:05:40,151 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:05:40,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-24 02:05:40,311 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-24 02:05:40,311 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:05:40,313 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-24 02:05:40,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:05:40,620 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 28 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:40,620 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:05:41,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-24 02:05:41,184 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 28 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:41,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546524576] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:05:41,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:05:41,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 17] total 40 [2024-11-24 02:05:41,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755452543] [2024-11-24 02:05:41,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:05:41,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-24 02:05:41,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:41,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-24 02:05:41,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1451, Unknown=0, NotChecked=0, Total=1640 [2024-11-24 02:05:41,186 INFO L87 Difference]: Start difference. First operand 186 states and 205 transitions. Second operand has 41 states, 40 states have (on average 3.275) internal successors, (131), 41 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:41,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:05:41,819 INFO L93 Difference]: Finished difference Result 231 states and 252 transitions. [2024-11-24 02:05:41,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-24 02:05:41,819 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 3.275) internal successors, (131), 41 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-24 02:05:41,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:05:41,820 INFO L225 Difference]: With dead ends: 231 [2024-11-24 02:05:41,821 INFO L226 Difference]: Without dead ends: 231 [2024-11-24 02:05:41,821 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 97 SyntacticMatches, 6 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1026 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=407, Invalid=2455, Unknown=0, NotChecked=0, Total=2862 [2024-11-24 02:05:41,821 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 156 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 02:05:41,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 361 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 02:05:41,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-24 02:05:41,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 201. [2024-11-24 02:05:41,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.11) internal successors, (222), 200 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:41,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 222 transitions. [2024-11-24 02:05:41,828 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 222 transitions. Word has length 62 [2024-11-24 02:05:41,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:05:41,828 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 222 transitions. [2024-11-24 02:05:41,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 3.275) internal successors, (131), 41 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:41,828 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 222 transitions. [2024-11-24 02:05:41,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-24 02:05:41,829 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:05:41,829 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:05:41,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-24 02:05:42,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:05:42,030 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:05:42,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:42,030 INFO L85 PathProgramCache]: Analyzing trace with hash 2018019686, now seen corresponding path program 10 times [2024-11-24 02:05:42,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:42,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520849396] [2024-11-24 02:05:42,032 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 02:05:42,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:42,061 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 02:05:42,061 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:05:42,643 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 17 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:42,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:42,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520849396] [2024-11-24 02:05:42,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520849396] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:05:42,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474640112] [2024-11-24 02:05:42,643 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 02:05:42,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:05:42,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:05:42,647 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:05:42,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-24 02:05:42,774 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 02:05:42,775 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:05:42,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-11-24 02:05:42,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:05:43,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-24 02:05:43,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 02:05:43,661 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 12 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:43,661 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:05:44,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-24 02:05:44,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2024-11-24 02:05:44,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2024-11-24 02:05:44,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-24 02:05:44,425 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 12 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:44,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474640112] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:05:44,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:05:44,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 25, 25] total 59 [2024-11-24 02:05:44,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631681678] [2024-11-24 02:05:44,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:05:44,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-24 02:05:44,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:44,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-24 02:05:44,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=3252, Unknown=0, NotChecked=0, Total=3422 [2024-11-24 02:05:44,427 INFO L87 Difference]: Start difference. First operand 201 states and 222 transitions. Second operand has 59 states, 59 states have (on average 2.8813559322033897) internal successors, (170), 59 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:46,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:05:46,283 INFO L93 Difference]: Finished difference Result 427 states and 459 transitions. [2024-11-24 02:05:46,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-24 02:05:46,283 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.8813559322033897) internal successors, (170), 59 states have internal predecessors, (170), 0 states have call successors, (0), 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 67 [2024-11-24 02:05:46,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:05:46,284 INFO L225 Difference]: With dead ends: 427 [2024-11-24 02:05:46,284 INFO L226 Difference]: Without dead ends: 253 [2024-11-24 02:05:46,285 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1729 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=339, Invalid=7317, Unknown=0, NotChecked=0, Total=7656 [2024-11-24 02:05:46,285 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 119 mSDsluCounter, 1410 mSDsCounter, 0 mSdLazyCounter, 2107 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 1452 SdHoareTripleChecker+Invalid, 2118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-24 02:05:46,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 1452 Invalid, 2118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2107 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-24 02:05:46,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-24 02:05:46,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 213. [2024-11-24 02:05:46,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.1037735849056605) internal successors, (234), 212 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:46,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 234 transitions. [2024-11-24 02:05:46,291 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 234 transitions. Word has length 67 [2024-11-24 02:05:46,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:05:46,291 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 234 transitions. [2024-11-24 02:05:46,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.8813559322033897) internal successors, (170), 59 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:46,291 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 234 transitions. [2024-11-24 02:05:46,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-24 02:05:46,292 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:05:46,292 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:05:46,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-24 02:05:46,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:05:46,492 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:05:46,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:46,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1683748685, now seen corresponding path program 11 times [2024-11-24 02:05:46,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:46,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229204161] [2024-11-24 02:05:46,493 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 02:05:46,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:46,516 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-24 02:05:46,516 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:05:47,239 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 48 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:47,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:47,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229204161] [2024-11-24 02:05:47,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229204161] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:05:47,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306229324] [2024-11-24 02:05:47,239 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 02:05:47,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:05:47,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:05:47,242 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:05:47,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-24 02:05:47,398 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-24 02:05:47,398 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:05:47,400 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-11-24 02:05:47,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:05:47,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-24 02:05:47,820 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 45 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:47,820 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:05:48,771 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 45 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:48,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306229324] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:05:48,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:05:48,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 19] total 50 [2024-11-24 02:05:48,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605893797] [2024-11-24 02:05:48,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:05:48,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-24 02:05:48,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:48,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-24 02:05:48,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=2220, Unknown=0, NotChecked=0, Total=2550 [2024-11-24 02:05:48,773 INFO L87 Difference]: Start difference. First operand 213 states and 234 transitions. Second operand has 51 states, 50 states have (on average 3.54) internal successors, (177), 51 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:49,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:05:49,668 INFO L93 Difference]: Finished difference Result 264 states and 287 transitions. [2024-11-24 02:05:49,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-24 02:05:49,669 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 3.54) internal successors, (177), 51 states have internal predecessors, (177), 0 states have call successors, (0), 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 71 [2024-11-24 02:05:49,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:05:49,670 INFO L225 Difference]: With dead ends: 264 [2024-11-24 02:05:49,670 INFO L226 Difference]: Without dead ends: 264 [2024-11-24 02:05:49,670 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1291 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=505, Invalid=3785, Unknown=0, NotChecked=0, Total=4290 [2024-11-24 02:05:49,670 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 149 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 02:05:49,671 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 882 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 02:05:49,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-24 02:05:49,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 228. [2024-11-24 02:05:49,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.105726872246696) internal successors, (251), 227 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:49,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 251 transitions. [2024-11-24 02:05:49,675 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 251 transitions. Word has length 71 [2024-11-24 02:05:49,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:05:49,675 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 251 transitions. [2024-11-24 02:05:49,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 3.54) internal successors, (177), 51 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:49,676 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 251 transitions. [2024-11-24 02:05:49,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-24 02:05:49,676 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:05:49,676 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:05:49,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-24 02:05:49,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-24 02:05:49,877 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:05:49,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:49,877 INFO L85 PathProgramCache]: Analyzing trace with hash 496751560, now seen corresponding path program 12 times [2024-11-24 02:05:49,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:49,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881498872] [2024-11-24 02:05:49,878 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 02:05:49,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:49,937 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-24 02:05:49,937 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:05:50,797 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 20 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:50,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:50,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881498872] [2024-11-24 02:05:50,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881498872] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:05:50,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407366302] [2024-11-24 02:05:50,798 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 02:05:50,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:05:50,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:05:50,800 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:05:50,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-24 02:05:51,051 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-24 02:05:51,051 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:05:51,054 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-11-24 02:05:51,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:05:51,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 02:05:51,438 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 20 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:51,438 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:05:51,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-24 02:05:51,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-24 02:05:51,656 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 20 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:51,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407366302] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:05:51,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:05:51,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23, 23] total 40 [2024-11-24 02:05:51,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006600694] [2024-11-24 02:05:51,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:05:51,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-24 02:05:51,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:51,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-24 02:05:51,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1445, Unknown=0, NotChecked=0, Total=1560 [2024-11-24 02:05:51,658 INFO L87 Difference]: Start difference. First operand 228 states and 251 transitions. Second operand has 40 states, 40 states have (on average 3.0) internal successors, (120), 40 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:52,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:05:52,634 INFO L93 Difference]: Finished difference Result 408 states and 443 transitions. [2024-11-24 02:05:52,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-24 02:05:52,634 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.0) internal successors, (120), 40 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-24 02:05:52,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:05:52,635 INFO L225 Difference]: With dead ends: 408 [2024-11-24 02:05:52,635 INFO L226 Difference]: Without dead ends: 249 [2024-11-24 02:05:52,636 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 746 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=234, Invalid=3188, Unknown=0, NotChecked=0, Total=3422 [2024-11-24 02:05:52,636 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 95 mSDsluCounter, 1439 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 1498 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 02:05:52,636 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 1498 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 02:05:52,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-11-24 02:05:52,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 240. [2024-11-24 02:05:52,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 1.100418410041841) internal successors, (263), 239 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:52,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 263 transitions. [2024-11-24 02:05:52,641 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 263 transitions. Word has length 76 [2024-11-24 02:05:52,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:05:52,641 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 263 transitions. [2024-11-24 02:05:52,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.0) internal successors, (120), 40 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:52,641 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 263 transitions. [2024-11-24 02:05:52,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-24 02:05:52,642 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:05:52,642 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:05:52,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-24 02:05:52,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-24 02:05:52,843 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:05:52,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:52,843 INFO L85 PathProgramCache]: Analyzing trace with hash -900195903, now seen corresponding path program 13 times [2024-11-24 02:05:52,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:52,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130537069] [2024-11-24 02:05:52,843 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 02:05:52,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:05:53,793 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 45 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:53,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:53,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130537069] [2024-11-24 02:05:53,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130537069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:05:53,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392150263] [2024-11-24 02:05:53,794 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 02:05:53,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:05:53,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:05:53,796 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:05:53,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-24 02:05:53,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:05:53,952 INFO L256 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-11-24 02:05:53,953 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:05:54,399 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 66 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:54,399 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:05:54,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-24 02:05:55,179 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 66 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:55,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392150263] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:05:55,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:05:55,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 46 [2024-11-24 02:05:55,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618340511] [2024-11-24 02:05:55,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:05:55,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-24 02:05:55,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:55,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-24 02:05:55,181 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1940, Unknown=0, NotChecked=0, Total=2162 [2024-11-24 02:05:55,181 INFO L87 Difference]: Start difference. First operand 240 states and 263 transitions. Second operand has 47 states, 46 states have (on average 3.5434782608695654) internal successors, (163), 47 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:56,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:05:56,358 INFO L93 Difference]: Finished difference Result 297 states and 322 transitions. [2024-11-24 02:05:56,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-24 02:05:56,359 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 3.5434782608695654) internal successors, (163), 47 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-24 02:05:56,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:05:56,361 INFO L225 Difference]: With dead ends: 297 [2024-11-24 02:05:56,361 INFO L226 Difference]: Without dead ends: 297 [2024-11-24 02:05:56,361 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 127 SyntacticMatches, 8 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1324 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=421, Invalid=3611, Unknown=0, NotChecked=0, Total=4032 [2024-11-24 02:05:56,361 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 174 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 1451 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 1239 SdHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 02:05:56,361 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 1239 Invalid, 1451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1451 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 02:05:56,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2024-11-24 02:05:56,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 255. [2024-11-24 02:05:56,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.1023622047244095) internal successors, (280), 254 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:56,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 280 transitions. [2024-11-24 02:05:56,367 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 280 transitions. Word has length 80 [2024-11-24 02:05:56,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:05:56,367 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 280 transitions. [2024-11-24 02:05:56,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 3.5434782608695654) internal successors, (163), 47 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:56,367 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 280 transitions. [2024-11-24 02:05:56,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-24 02:05:56,368 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:05:56,368 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:05:56,378 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-24 02:05:56,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-24 02:05:56,568 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:05:56,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:56,569 INFO L85 PathProgramCache]: Analyzing trace with hash -539551276, now seen corresponding path program 14 times [2024-11-24 02:05:56,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:56,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551246403] [2024-11-24 02:05:56,569 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 02:05:56,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:56,615 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 02:05:56,615 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:05:57,499 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 23 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:57,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:57,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551246403] [2024-11-24 02:05:57,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551246403] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:05:57,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278360224] [2024-11-24 02:05:57,500 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 02:05:57,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:05:57,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:05:57,502 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:05:57,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-24 02:05:57,676 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 02:05:57,677 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:05:57,681 INFO L256 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 126 conjuncts are in the unsatisfiable core [2024-11-24 02:05:57,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:05:58,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-24 02:05:58,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 02:05:58,516 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 23 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:58,516 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:05:58,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-24 02:05:58,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-24 02:05:59,044 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 23 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:59,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278360224] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:05:59,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:05:59,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 30, 25] total 57 [2024-11-24 02:05:59,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108047292] [2024-11-24 02:05:59,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:05:59,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-24 02:05:59,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:59,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-24 02:05:59,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=3005, Unknown=0, NotChecked=0, Total=3192 [2024-11-24 02:05:59,046 INFO L87 Difference]: Start difference. First operand 255 states and 280 transitions. Second operand has 57 states, 57 states have (on average 2.9298245614035086) internal successors, (167), 57 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:01,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:06:01,455 INFO L93 Difference]: Finished difference Result 502 states and 543 transitions. [2024-11-24 02:06:01,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-24 02:06:01,456 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.9298245614035086) internal successors, (167), 57 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-11-24 02:06:01,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:06:01,458 INFO L225 Difference]: With dead ends: 502 [2024-11-24 02:06:01,459 INFO L226 Difference]: Without dead ends: 315 [2024-11-24 02:06:01,464 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2219 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=543, Invalid=9357, Unknown=0, NotChecked=0, Total=9900 [2024-11-24 02:06:01,465 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 151 mSDsluCounter, 1689 mSDsCounter, 0 mSdLazyCounter, 1987 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 2001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-24 02:06:01,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 1750 Invalid, 2001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1987 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-24 02:06:01,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-11-24 02:06:01,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 267. [2024-11-24 02:06:01,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.0977443609022557) internal successors, (292), 266 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:01,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 292 transitions. [2024-11-24 02:06:01,480 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 292 transitions. Word has length 85 [2024-11-24 02:06:01,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:06:01,480 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 292 transitions. [2024-11-24 02:06:01,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.9298245614035086) internal successors, (167), 57 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:01,481 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 292 transitions. [2024-11-24 02:06:01,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-24 02:06:01,484 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:06:01,484 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:01,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-24 02:06:01,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-24 02:06:01,685 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:06:01,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:01,686 INFO L85 PathProgramCache]: Analyzing trace with hash 763853819, now seen corresponding path program 15 times [2024-11-24 02:06:01,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:01,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180197593] [2024-11-24 02:06:01,686 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 02:06:01,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:01,762 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-24 02:06:01,762 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:06:03,123 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 66 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:03,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:03,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180197593] [2024-11-24 02:06:03,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180197593] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:06:03,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2692676] [2024-11-24 02:06:03,123 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 02:06:03,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:06:03,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:06:03,126 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:06:03,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-24 02:06:03,417 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-24 02:06:03,417 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:06:03,421 INFO L256 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-11-24 02:06:03,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:06:04,397 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 91 proven. 185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:04,397 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:06:05,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-24 02:06:05,571 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 91 proven. 185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:05,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2692676] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:06:05,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:06:05,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 23, 23] total 71 [2024-11-24 02:06:05,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313617963] [2024-11-24 02:06:05,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:06:05,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-11-24 02:06:05,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:05,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-11-24 02:06:05,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=576, Invalid=4536, Unknown=0, NotChecked=0, Total=5112 [2024-11-24 02:06:05,574 INFO L87 Difference]: Start difference. First operand 267 states and 292 transitions. Second operand has 72 states, 71 states have (on average 3.647887323943662) internal successors, (259), 72 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:07,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:06:07,104 INFO L93 Difference]: Finished difference Result 330 states and 357 transitions. [2024-11-24 02:06:07,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-24 02:06:07,104 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 3.647887323943662) internal successors, (259), 72 states have internal predecessors, (259), 0 states have call successors, (0), 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 89 [2024-11-24 02:06:07,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:06:07,105 INFO L225 Difference]: With dead ends: 330 [2024-11-24 02:06:07,106 INFO L226 Difference]: Without dead ends: 330 [2024-11-24 02:06:07,106 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3126 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=920, Invalid=7270, Unknown=0, NotChecked=0, Total=8190 [2024-11-24 02:06:07,107 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 229 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 02:06:07,107 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 958 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 02:06:07,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-11-24 02:06:07,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 282. [2024-11-24 02:06:07,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 1.099644128113879) internal successors, (309), 281 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:07,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 309 transitions. [2024-11-24 02:06:07,113 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 309 transitions. Word has length 89 [2024-11-24 02:06:07,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:06:07,113 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 309 transitions. [2024-11-24 02:06:07,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 3.647887323943662) internal successors, (259), 72 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:07,113 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 309 transitions. [2024-11-24 02:06:07,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-24 02:06:07,115 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:06:07,115 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:07,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-24 02:06:07,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:06:07,320 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:06:07,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:07,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1074918438, now seen corresponding path program 16 times [2024-11-24 02:06:07,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:07,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604475919] [2024-11-24 02:06:07,320 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 02:06:07,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:07,342 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 02:06:07,343 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:06:08,463 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 26 proven. 292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:08,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:08,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604475919] [2024-11-24 02:06:08,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604475919] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:06:08,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201187009] [2024-11-24 02:06:08,464 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 02:06:08,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:06:08,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:06:08,467 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:06:08,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-24 02:06:08,667 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 02:06:08,667 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:06:08,670 INFO L256 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 130 conjuncts are in the unsatisfiable core [2024-11-24 02:06:08,675 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:06:09,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-24 02:06:09,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 02:06:10,031 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 18 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:10,032 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:06:10,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-24 02:06:10,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2024-11-24 02:06:10,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2024-11-24 02:06:10,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-24 02:06:11,084 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 18 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:11,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201187009] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:06:11,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:06:11,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 31, 31] total 74 [2024-11-24 02:06:11,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421548512] [2024-11-24 02:06:11,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:06:11,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-11-24 02:06:11,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:11,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-11-24 02:06:11,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=5190, Unknown=0, NotChecked=0, Total=5402 [2024-11-24 02:06:11,086 INFO L87 Difference]: Start difference. First operand 282 states and 309 transitions. Second operand has 74 states, 74 states have (on average 3.22972972972973) internal successors, (239), 74 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:14,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:06:14,461 INFO L93 Difference]: Finished difference Result 598 states and 642 transitions. [2024-11-24 02:06:14,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-24 02:06:14,462 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 3.22972972972973) internal successors, (239), 74 states have internal predecessors, (239), 0 states have call successors, (0), 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 94 [2024-11-24 02:06:14,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:06:14,463 INFO L225 Difference]: With dead ends: 598 [2024-11-24 02:06:14,463 INFO L226 Difference]: Without dead ends: 346 [2024-11-24 02:06:14,464 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3019 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=450, Invalid=12660, Unknown=0, NotChecked=0, Total=13110 [2024-11-24 02:06:14,464 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 170 mSDsluCounter, 3001 mSDsCounter, 0 mSdLazyCounter, 4454 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 3061 SdHoareTripleChecker+Invalid, 4471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 4454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-24 02:06:14,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 3061 Invalid, 4471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 4454 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-24 02:06:14,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2024-11-24 02:06:14,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 294. [2024-11-24 02:06:14,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 1.0955631399317407) internal successors, (321), 293 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:14,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 321 transitions. [2024-11-24 02:06:14,477 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 321 transitions. Word has length 94 [2024-11-24 02:06:14,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:06:14,478 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 321 transitions. [2024-11-24 02:06:14,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 3.22972972972973) internal successors, (239), 74 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:14,478 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 321 transitions. [2024-11-24 02:06:14,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-24 02:06:14,479 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:06:14,479 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:14,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-24 02:06:14,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:06:14,680 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:06:14,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:14,681 INFO L85 PathProgramCache]: Analyzing trace with hash 750527891, now seen corresponding path program 17 times [2024-11-24 02:06:14,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:14,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098990084] [2024-11-24 02:06:14,681 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 02:06:14,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:14,717 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-24 02:06:14,717 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:06:15,620 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 123 proven. 228 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:15,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:15,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098990084] [2024-11-24 02:06:15,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098990084] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:06:15,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679769353] [2024-11-24 02:06:15,621 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 02:06:15,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:06:15,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:06:15,624 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:06:15,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-24 02:06:15,850 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-24 02:06:15,850 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:06:15,853 INFO L256 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 107 conjuncts are in the unsatisfiable core [2024-11-24 02:06:15,855 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:06:15,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-24 02:06:16,475 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 120 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:16,475 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:06:17,964 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 120 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:17,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679769353] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:06:17,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:06:17,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25, 25] total 65 [2024-11-24 02:06:17,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416595752] [2024-11-24 02:06:17,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:06:17,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-24 02:06:17,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:17,967 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-24 02:06:17,967 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=554, Invalid=3736, Unknown=0, NotChecked=0, Total=4290 [2024-11-24 02:06:17,968 INFO L87 Difference]: Start difference. First operand 294 states and 321 transitions. Second operand has 66 states, 65 states have (on average 3.7384615384615385) internal successors, (243), 66 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:19,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:06:19,509 INFO L93 Difference]: Finished difference Result 363 states and 392 transitions. [2024-11-24 02:06:19,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-24 02:06:19,509 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 3.7384615384615385) internal successors, (243), 66 states have internal predecessors, (243), 0 states have call successors, (0), 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 98 [2024-11-24 02:06:19,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:06:19,510 INFO L225 Difference]: With dead ends: 363 [2024-11-24 02:06:19,510 INFO L226 Difference]: Without dead ends: 363 [2024-11-24 02:06:19,511 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2332 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=831, Invalid=6651, Unknown=0, NotChecked=0, Total=7482 [2024-11-24 02:06:19,511 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 233 mSDsluCounter, 1281 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 1547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 02:06:19,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 1350 Invalid, 1547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 02:06:19,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-11-24 02:06:19,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 309. [2024-11-24 02:06:19,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 308 states have (on average 1.0974025974025974) internal successors, (338), 308 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:19,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 338 transitions. [2024-11-24 02:06:19,519 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 338 transitions. Word has length 98 [2024-11-24 02:06:19,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:06:19,519 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 338 transitions. [2024-11-24 02:06:19,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 3.7384615384615385) internal successors, (243), 66 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:19,519 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 338 transitions. [2024-11-24 02:06:19,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-24 02:06:19,520 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:06:19,521 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:19,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-24 02:06:19,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:06:19,721 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:06:19,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:19,722 INFO L85 PathProgramCache]: Analyzing trace with hash -2019843774, now seen corresponding path program 18 times [2024-11-24 02:06:19,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:19,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884875029] [2024-11-24 02:06:19,722 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 02:06:19,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:19,796 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-24 02:06:19,796 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:06:21,093 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 29 proven. 369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:21,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:21,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884875029] [2024-11-24 02:06:21,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884875029] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:06:21,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925068319] [2024-11-24 02:06:21,094 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 02:06:21,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:06:21,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:06:21,096 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:06:21,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-24 02:06:21,404 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-24 02:06:21,404 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:06:21,411 INFO L256 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 139 conjuncts are in the unsatisfiable core [2024-11-24 02:06:21,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:06:22,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-24 02:06:22,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 02:06:22,416 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-24 02:06:22,418 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 02:06:22,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 10 [2024-11-24 02:06:22,594 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 29 proven. 369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:22,594 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:06:22,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-24 02:06:22,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-24 02:06:23,592 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 29 proven. 369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:23,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925068319] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:06:23,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:06:23,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 34, 31] total 68 [2024-11-24 02:06:23,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647468043] [2024-11-24 02:06:23,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:06:23,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-24 02:06:23,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:23,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-24 02:06:23,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=4326, Unknown=0, NotChecked=0, Total=4556 [2024-11-24 02:06:23,594 INFO L87 Difference]: Start difference. First operand 309 states and 338 transitions. Second operand has 68 states, 68 states have (on average 2.985294117647059) internal successors, (203), 68 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:27,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:06:27,188 INFO L93 Difference]: Finished difference Result 606 states and 655 transitions. [2024-11-24 02:06:27,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-11-24 02:06:27,189 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.985294117647059) internal successors, (203), 68 states have internal predecessors, (203), 0 states have call successors, (0), 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 103 [2024-11-24 02:06:27,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:06:27,189 INFO L225 Difference]: With dead ends: 606 [2024-11-24 02:06:27,189 INFO L226 Difference]: Without dead ends: 377 [2024-11-24 02:06:27,190 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3238 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=699, Invalid=13581, Unknown=0, NotChecked=0, Total=14280 [2024-11-24 02:06:27,190 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 230 mSDsluCounter, 2626 mSDsCounter, 0 mSdLazyCounter, 2892 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 2701 SdHoareTripleChecker+Invalid, 2910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-24 02:06:27,190 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 2701 Invalid, 2910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2892 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-24 02:06:27,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-11-24 02:06:27,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 321. [2024-11-24 02:06:27,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 320 states have (on average 1.09375) internal successors, (350), 320 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:27,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 350 transitions. [2024-11-24 02:06:27,194 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 350 transitions. Word has length 103 [2024-11-24 02:06:27,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:06:27,194 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 350 transitions. [2024-11-24 02:06:27,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.985294117647059) internal successors, (203), 68 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:27,194 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 350 transitions. [2024-11-24 02:06:27,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-24 02:06:27,195 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:06:27,195 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:27,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-24 02:06:27,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-11-24 02:06:27,400 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:06:27,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:27,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1470916521, now seen corresponding path program 19 times [2024-11-24 02:06:27,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:27,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869994899] [2024-11-24 02:06:27,400 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 02:06:27,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:28,643 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 120 proven. 315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:28,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:28,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869994899] [2024-11-24 02:06:28,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869994899] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:06:28,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563987145] [2024-11-24 02:06:28,643 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 02:06:28,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:06:28,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:06:28,645 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:06:28,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-24 02:06:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:28,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 108 conjuncts are in the unsatisfiable core [2024-11-24 02:06:28,847 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:06:29,486 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 153 proven. 282 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:29,486 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:06:30,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-24 02:06:30,640 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 153 proven. 282 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:30,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563987145] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:06:30,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:06:30,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 58 [2024-11-24 02:06:30,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040689776] [2024-11-24 02:06:30,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:06:30,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-24 02:06:30,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:30,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-24 02:06:30,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=354, Invalid=3068, Unknown=0, NotChecked=0, Total=3422 [2024-11-24 02:06:30,643 INFO L87 Difference]: Start difference. First operand 321 states and 350 transitions. Second operand has 59 states, 58 states have (on average 3.7413793103448274) internal successors, (217), 59 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:32,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:06:32,387 INFO L93 Difference]: Finished difference Result 396 states and 427 transitions. [2024-11-24 02:06:32,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-24 02:06:32,388 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 3.7413793103448274) internal successors, (217), 59 states have internal predecessors, (217), 0 states have call successors, (0), 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 107 [2024-11-24 02:06:32,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:06:32,389 INFO L225 Difference]: With dead ends: 396 [2024-11-24 02:06:32,389 INFO L226 Difference]: Without dead ends: 396 [2024-11-24 02:06:32,390 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 172 SyntacticMatches, 11 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2347 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=658, Invalid=5984, Unknown=0, NotChecked=0, Total=6642 [2024-11-24 02:06:32,390 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 322 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 2010 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 1674 SdHoareTripleChecker+Invalid, 2010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-24 02:06:32,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 1674 Invalid, 2010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2010 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-24 02:06:32,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-11-24 02:06:32,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 336. [2024-11-24 02:06:32,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 1.0955223880597016) internal successors, (367), 335 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:32,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 367 transitions. [2024-11-24 02:06:32,397 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 367 transitions. Word has length 107 [2024-11-24 02:06:32,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:06:32,398 INFO L471 AbstractCegarLoop]: Abstraction has 336 states and 367 transitions. [2024-11-24 02:06:32,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 3.7413793103448274) internal successors, (217), 59 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:32,398 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 367 transitions. [2024-11-24 02:06:32,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-24 02:06:32,399 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:06:32,399 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:32,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-24 02:06:32,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-24 02:06:32,600 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:06:32,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:32,600 INFO L85 PathProgramCache]: Analyzing trace with hash 2014264556, now seen corresponding path program 20 times [2024-11-24 02:06:32,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:32,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430748915] [2024-11-24 02:06:32,600 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 02:06:32,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:32,628 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 02:06:32,628 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:06:34,501 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 120 proven. 367 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:34,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:34,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430748915] [2024-11-24 02:06:34,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430748915] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:06:34,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152377164] [2024-11-24 02:06:34,502 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 02:06:34,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:06:34,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:06:34,505 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:06:34,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-24 02:06:34,729 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 02:06:34,729 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:06:34,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 151 conjuncts are in the unsatisfiable core [2024-11-24 02:06:34,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:06:35,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-24 02:06:35,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 02:06:36,083 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-24 02:06:36,085 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 02:06:36,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 10 [2024-11-24 02:06:37,046 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 32 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:37,046 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:06:37,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-24 02:06:37,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-24 02:06:38,551 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 32 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:38,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152377164] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:06:38,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:06:38,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 36, 33] total 84 [2024-11-24 02:06:38,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807802257] [2024-11-24 02:06:38,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:06:38,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-11-24 02:06:38,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:38,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-11-24 02:06:38,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=6688, Unknown=0, NotChecked=0, Total=6972 [2024-11-24 02:06:38,553 INFO L87 Difference]: Start difference. First operand 336 states and 367 transitions. Second operand has 84 states, 84 states have (on average 3.25) internal successors, (273), 84 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:47,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:06:47,541 INFO L93 Difference]: Finished difference Result 730 states and 785 transitions. [2024-11-24 02:06:47,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-11-24 02:06:47,542 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 3.25) internal successors, (273), 84 states have internal predecessors, (273), 0 states have call successors, (0), 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 112 [2024-11-24 02:06:47,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:06:47,543 INFO L225 Difference]: With dead ends: 730 [2024-11-24 02:06:47,543 INFO L226 Difference]: Without dead ends: 480 [2024-11-24 02:06:47,544 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7379 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=1230, Invalid=28526, Unknown=0, NotChecked=0, Total=29756 [2024-11-24 02:06:47,545 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 398 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 5625 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 4031 SdHoareTripleChecker+Invalid, 5645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 5625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:06:47,545 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 4031 Invalid, 5645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 5625 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-24 02:06:47,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2024-11-24 02:06:47,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 363. [2024-11-24 02:06:47,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 1.0939226519337018) internal successors, (396), 362 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:47,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 396 transitions. [2024-11-24 02:06:47,553 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 396 transitions. Word has length 112 [2024-11-24 02:06:47,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:06:47,553 INFO L471 AbstractCegarLoop]: Abstraction has 363 states and 396 transitions. [2024-11-24 02:06:47,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 3.25) internal successors, (273), 84 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:47,554 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 396 transitions. [2024-11-24 02:06:47,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-24 02:06:47,555 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:06:47,555 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:47,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-24 02:06:47,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-24 02:06:47,756 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:06:47,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:47,757 INFO L85 PathProgramCache]: Analyzing trace with hash 2130984880, now seen corresponding path program 21 times [2024-11-24 02:06:47,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:47,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787321181] [2024-11-24 02:06:47,757 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 02:06:47,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:47,830 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-11-24 02:06:47,830 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:06:49,485 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 35 proven. 550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:49,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:49,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787321181] [2024-11-24 02:06:49,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787321181] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:06:49,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127099380] [2024-11-24 02:06:49,486 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 02:06:49,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:06:49,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:06:49,488 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:06:49,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-24 02:06:49,922 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-11-24 02:06:49,922 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:06:49,926 INFO L256 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 136 conjuncts are in the unsatisfiable core [2024-11-24 02:06:49,929 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:06:50,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 02:06:50,627 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 35 proven. 550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:50,627 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:06:50,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-24 02:06:50,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-24 02:06:50,898 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 35 proven. 550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:50,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127099380] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:06:50,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:06:50,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 33, 33] total 57 [2024-11-24 02:06:50,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467939776] [2024-11-24 02:06:50,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:06:50,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-24 02:06:50,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:50,900 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-24 02:06:50,900 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=3031, Unknown=0, NotChecked=0, Total=3192 [2024-11-24 02:06:50,900 INFO L87 Difference]: Start difference. First operand 363 states and 396 transitions. Second operand has 57 states, 57 states have (on average 3.3157894736842106) internal successors, (189), 57 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:53,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:06:53,387 INFO L93 Difference]: Finished difference Result 648 states and 703 transitions. [2024-11-24 02:06:53,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-24 02:06:53,388 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.3157894736842106) internal successors, (189), 57 states have internal predecessors, (189), 0 states have call successors, (0), 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 121 [2024-11-24 02:06:53,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:06:53,390 INFO L225 Difference]: With dead ends: 648 [2024-11-24 02:06:53,390 INFO L226 Difference]: Without dead ends: 384 [2024-11-24 02:06:53,390 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1706 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=354, Invalid=7302, Unknown=0, NotChecked=0, Total=7656 [2024-11-24 02:06:53,390 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 214 mSDsluCounter, 3347 mSDsCounter, 0 mSdLazyCounter, 3092 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 3441 SdHoareTripleChecker+Invalid, 3103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-24 02:06:53,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 3441 Invalid, 3103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 3092 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-24 02:06:53,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2024-11-24 02:06:53,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 375. [2024-11-24 02:06:53,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 1.0909090909090908) internal successors, (408), 374 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:53,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 408 transitions. [2024-11-24 02:06:53,396 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 408 transitions. Word has length 121 [2024-11-24 02:06:53,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:06:53,396 INFO L471 AbstractCegarLoop]: Abstraction has 375 states and 408 transitions. [2024-11-24 02:06:53,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.3157894736842106) internal successors, (189), 57 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:53,396 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 408 transitions. [2024-11-24 02:06:53,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-24 02:06:53,397 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:06:53,397 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:53,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-24 02:06:53,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-24 02:06:53,599 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:06:53,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:53,599 INFO L85 PathProgramCache]: Analyzing trace with hash -230892969, now seen corresponding path program 22 times [2024-11-24 02:06:53,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:53,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615143335] [2024-11-24 02:06:53,600 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 02:06:53,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:53,632 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 02:06:53,633 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:06:54,731 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 190 proven. 440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:54,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:54,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615143335] [2024-11-24 02:06:54,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615143335] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:06:54,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348331095] [2024-11-24 02:06:54,731 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 02:06:54,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:06:54,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:06:54,733 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:06:54,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-24 02:06:55,017 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 02:06:55,017 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:06:55,020 INFO L256 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 124 conjuncts are in the unsatisfiable core [2024-11-24 02:06:55,023 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:06:55,370 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 231 proven. 399 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:55,370 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:06:56,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-24 02:06:56,487 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 231 proven. 399 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:56,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348331095] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:06:56,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:06:56,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 50 [2024-11-24 02:06:56,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992258941] [2024-11-24 02:06:56,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:06:56,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-24 02:06:56,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:56,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-24 02:06:56,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=2298, Unknown=0, NotChecked=0, Total=2550 [2024-11-24 02:06:56,489 INFO L87 Difference]: Start difference. First operand 375 states and 408 transitions. Second operand has 51 states, 50 states have (on average 3.98) internal successors, (199), 51 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:58,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:06:58,549 INFO L93 Difference]: Finished difference Result 462 states and 497 transitions. [2024-11-24 02:06:58,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-24 02:06:58,549 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 3.98) internal successors, (199), 51 states have internal predecessors, (199), 0 states have call successors, (0), 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 125 [2024-11-24 02:06:58,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:06:58,551 INFO L225 Difference]: With dead ends: 462 [2024-11-24 02:06:58,551 INFO L226 Difference]: Without dead ends: 462 [2024-11-24 02:06:58,551 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 217 SyntacticMatches, 13 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1269 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=568, Invalid=5438, Unknown=0, NotChecked=0, Total=6006 [2024-11-24 02:06:58,552 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 202 mSDsluCounter, 2048 mSDsCounter, 0 mSdLazyCounter, 2542 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 2135 SdHoareTripleChecker+Invalid, 2542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-24 02:06:58,552 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 2135 Invalid, 2542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2542 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-24 02:06:58,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2024-11-24 02:06:58,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 390. [2024-11-24 02:06:58,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 1.0925449871465296) internal successors, (425), 389 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:58,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 425 transitions. [2024-11-24 02:06:58,559 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 425 transitions. Word has length 125 [2024-11-24 02:06:58,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:06:58,560 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 425 transitions. [2024-11-24 02:06:58,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 3.98) internal successors, (199), 51 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:58,560 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 425 transitions. [2024-11-24 02:06:58,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-24 02:06:58,561 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:06:58,562 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:58,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-24 02:06:58,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-24 02:06:58,762 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:06:58,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:58,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1461631234, now seen corresponding path program 23 times [2024-11-24 02:06:58,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:58,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739321522] [2024-11-24 02:06:58,763 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 02:06:58,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:58,814 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-11-24 02:06:58,814 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:07:00,538 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 38 proven. 654 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:07:00,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:07:00,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739321522] [2024-11-24 02:07:00,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739321522] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:07:00,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624989097] [2024-11-24 02:07:00,539 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 02:07:00,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:07:00,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:07:00,541 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:07:00,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-24 02:07:00,857 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-11-24 02:07:00,857 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:07:00,862 INFO L256 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 177 conjuncts are in the unsatisfiable core [2024-11-24 02:07:00,867 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:07:00,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-24 02:07:02,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-24 02:07:02,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-24 02:07:06,333 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 02:07:06,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 15 [2024-11-24 02:07:06,845 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 231 proven. 456 refuted. 5 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:07:06,845 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:07:10,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-24 02:07:10,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2024-11-24 02:07:10,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2024-11-24 02:07:10,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-24 02:07:13,303 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 231 proven. 461 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:07:13,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624989097] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:07:13,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:07:13,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 39, 39] total 112 [2024-11-24 02:07:13,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159677486] [2024-11-24 02:07:13,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:07:13,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2024-11-24 02:07:13,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:07:13,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2024-11-24 02:07:13,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=636, Invalid=11795, Unknown=1, NotChecked=0, Total=12432 [2024-11-24 02:07:13,306 INFO L87 Difference]: Start difference. First operand 390 states and 425 transitions. Second operand has 112 states, 112 states have (on average 3.4285714285714284) internal successors, (384), 112 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:30,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:07:30,478 INFO L93 Difference]: Finished difference Result 1043 states and 1117 transitions. [2024-11-24 02:07:30,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2024-11-24 02:07:30,478 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 3.4285714285714284) internal successors, (384), 112 states have internal predecessors, (384), 0 states have call successors, (0), 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 130 [2024-11-24 02:07:30,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:07:30,481 INFO L225 Difference]: With dead ends: 1043 [2024-11-24 02:07:30,481 INFO L226 Difference]: Without dead ends: 687 [2024-11-24 02:07:30,483 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7425 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=1922, Invalid=40719, Unknown=1, NotChecked=0, Total=42642 [2024-11-24 02:07:30,484 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 214 mSDsluCounter, 4886 mSDsCounter, 0 mSdLazyCounter, 9460 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 4970 SdHoareTripleChecker+Invalid, 9465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-24 02:07:30,485 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 4970 Invalid, 9465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9460 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-11-24 02:07:30,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2024-11-24 02:07:30,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 423. [2024-11-24 02:07:30,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 422 states have (on average 1.0900473933649288) internal successors, (460), 422 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:30,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 460 transitions. [2024-11-24 02:07:30,501 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 460 transitions. Word has length 130 [2024-11-24 02:07:30,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:07:30,501 INFO L471 AbstractCegarLoop]: Abstraction has 423 states and 460 transitions. [2024-11-24 02:07:30,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 112 states have (on average 3.4285714285714284) internal successors, (384), 112 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:30,501 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 460 transitions. [2024-11-24 02:07:30,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-24 02:07:30,503 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:07:30,503 INFO L218 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:07:30,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-24 02:07:30,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:07:30,704 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 02:07:30,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:07:30,704 INFO L85 PathProgramCache]: Analyzing trace with hash -295758562, now seen corresponding path program 24 times [2024-11-24 02:07:30,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:07:30,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069298188] [2024-11-24 02:07:30,705 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 02:07:30,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:07:30,837 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-11-24 02:07:30,837 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:07:32,873 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 41 proven. 767 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:07:32,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:07:32,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069298188] [2024-11-24 02:07:32,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069298188] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:07:32,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968167768] [2024-11-24 02:07:32,873 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 02:07:32,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:07:32,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:07:32,875 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:07:32,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbd7e6a-c035-4e7b-8ea0-70a3ee0e6a34/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-24 02:07:33,398 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-11-24 02:07:33,399 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:07:33,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 152 conjuncts are in the unsatisfiable core [2024-11-24 02:07:33,409 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:07:34,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-24 02:07:34,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-24 02:07:42,453 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 02:07:42,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 17 [2024-11-24 02:07:42,877 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 276 proven. 532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:07:42,877 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:07:47,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2024-11-24 02:07:47,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-24 02:07:47,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-24 02:07:48,621 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 276 proven. 532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:07:48,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968167768] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:07:48,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:07:48,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41, 36] total 117 [2024-11-24 02:07:48,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347785579] [2024-11-24 02:07:48,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:07:48,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2024-11-24 02:07:48,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:07:48,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2024-11-24 02:07:48,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=932, Invalid=12640, Unknown=0, NotChecked=0, Total=13572 [2024-11-24 02:07:48,625 INFO L87 Difference]: Start difference. First operand 423 states and 460 transitions. Second operand has 117 states, 117 states have (on average 3.5128205128205128) internal successors, (411), 117 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:08:01,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:08:02,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:08:04,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:08:06,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:08:08,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:08:10,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:08:11,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:08:46,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:08:48,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-24 02:09:13,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:09:14,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-24 02:09:30,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:09:34,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:10:27,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:10:31,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:10:35,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:10:40,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:10:44,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-24 02:10:49,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:10:53,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:10:58,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:11:52,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-24 02:11:54,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-24 02:11:56,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:12:00,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:12:04,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:12:07,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.97s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:12:09,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-24 02:12:47,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.91s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:12:49,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-24 02:13:27,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:13:28,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:13:32,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:13:36,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:13:40,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:14:11,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:14:13,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:14:16,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.92s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:14:20,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:14:31,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:14:32,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:14:36,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:14:40,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:14:42,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:14:47,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.98s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:14:51,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:14:52,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:14:55,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:14:59,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:15:03,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-24 02:15:05,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-24 02:15:30,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:15:31,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:15:34,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.92s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:15:36,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:15:38,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:15:42,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:16:06,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:16:10,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:16:14,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:16:18,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:16:22,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:16:50,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:16:52,325 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#length| |c_ULTIMATE.start_cstrspn_~spanp~0#1.base|)) (.cse1 (select |c_#memory_int#0| |c_ULTIMATE.start_cstrspn_~spanp~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_cstrspn_~spanp~0#1.offset| 10)) (.cse0 (select |c_#memory_int#0| |c_ULTIMATE.start_cstrspn_~s2#1.base|))) (and (forall ((|v_ULTIMATE.start_cstrspn_#t~post4#1.offset_413| Int)) (or (= (select .cse0 |v_ULTIMATE.start_cstrspn_#t~post4#1.offset_413|) 0) (< (+ |v_ULTIMATE.start_cstrspn_#t~post4#1.offset_413| 1) (select |c_#length| |c_ULTIMATE.start_cstrspn_~s2#1.base|)) (< |v_ULTIMATE.start_cstrspn_#t~post4#1.offset_413| 0) (< (+ |c_ULTIMATE.start_cstrspn_~s2#1.offset| 13) |v_ULTIMATE.start_cstrspn_#t~post4#1.offset_413|))) (= |c_ULTIMATE.start_cstrspn_~s2#1.offset| 0) (exists ((|v_ULTIMATE.start_main_~length2~0#1_38| Int) (|v_ULTIMATE.start_main_~nondetString2~0#1.offset_49| Int)) (and (= (select .cse1 (+ (- 1) |v_ULTIMATE.start_main_~length2~0#1_38| |v_ULTIMATE.start_main_~nondetString2~0#1.offset_49|)) 0) (<= |c_ULTIMATE.start_cstrspn_~spanp~0#1.offset| (+ |v_ULTIMATE.start_main_~nondetString2~0#1.offset_49| 13)) (<= 14 |v_ULTIMATE.start_main_~length2~0#1_38|) (<= (+ |v_ULTIMATE.start_main_~length2~0#1_38| |v_ULTIMATE.start_main_~nondetString2~0#1.offset_49|) .cse2))) (<= (+ |c_ULTIMATE.start_cstrspn_~spanp~0#1.offset| 1) .cse2) (forall ((|v_ULTIMATE.start_cstrspn_#t~post4#1.offset_413| Int)) (or (= (select .cse1 |v_ULTIMATE.start_cstrspn_#t~post4#1.offset_413|) 0) (< |v_ULTIMATE.start_cstrspn_#t~post4#1.offset_413| 0) (< (+ |v_ULTIMATE.start_cstrspn_#t~post4#1.offset_413| 1) .cse2) (< .cse3 |v_ULTIMATE.start_cstrspn_#t~post4#1.offset_413|))) (= (select .cse1 .cse3) 0) (<= 0 |c_ULTIMATE.start_cstrspn_~spanp~0#1.offset|) (= (select .cse0 13) 0))) is different from false [2024-11-24 02:16:57,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.63s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:16:58,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-24 02:17:00,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-24 02:17:02,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.89s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:17:04,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-24 02:17:08,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:17:09,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:17:13,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:17:17,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:17:20,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.48s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:17:26,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:17:28,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:17:30,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:17:33,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.91s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:17:35,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:18:13,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:18:15,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:18:16,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-24 02:18:43,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1]