./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/sll2n_insert_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/sll2n_insert_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB --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 383c6933c6ab916f651364224af1d774f30e162ad506fd2f28fe7f76c4487ba3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:02:52,482 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:02:52,557 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 03:02:52,567 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:02:52,568 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:02:52,606 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:02:52,606 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:02:52,606 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:02:52,607 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:02:52,607 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:02:52,607 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:02:52,607 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:02:52,607 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:02:52,607 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:02:52,608 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:02:52,608 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:02:52,609 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:02:52,609 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:02:52,610 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:02:52,610 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:02:52,610 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 03:02:52,610 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 03:02:52,611 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 03:02:52,611 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:02:52,611 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 03:02:52,611 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:02:52,611 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:02:52,611 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:02:52,611 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:02:52,612 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:02:52,612 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:02:52,612 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:02:52,612 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:02:52,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:02:52,612 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:02:52,612 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:02:52,613 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:02:52,613 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:02:52,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:02:52,613 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:02:52,613 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:02:52,613 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:02:52,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:02:52,613 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:02:52,613 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:02:52,614 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:02:52,614 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:02:52,614 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_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 383c6933c6ab916f651364224af1d774f30e162ad506fd2f28fe7f76c4487ba3 [2024-11-28 03:02:52,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:02:52,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:02:52,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:02:52,987 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:02:52,988 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:02:52,990 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/list-simple/sll2n_insert_unequal.i [2024-11-28 03:02:55,922 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/data/ff75b3d1f/379fd069c4d54429af6d23185bfcf3b2/FLAGb515ab935 [2024-11-28 03:02:56,311 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:02:56,311 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/sv-benchmarks/c/list-simple/sll2n_insert_unequal.i [2024-11-28 03:02:56,323 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/data/ff75b3d1f/379fd069c4d54429af6d23185bfcf3b2/FLAGb515ab935 [2024-11-28 03:02:56,338 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/data/ff75b3d1f/379fd069c4d54429af6d23185bfcf3b2 [2024-11-28 03:02:56,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:02:56,342 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:02:56,343 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:02:56,343 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:02:56,348 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:02:56,348 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:02:56" (1/1) ... [2024-11-28 03:02:56,349 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b0c4d03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:56, skipping insertion in model container [2024-11-28 03:02:56,350 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:02:56" (1/1) ... [2024-11-28 03:02:56,377 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:02:56,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:02:56,648 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:02:56,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:02:56,772 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:02:56,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:56 WrapperNode [2024-11-28 03:02:56,774 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:02:56,776 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:02:56,776 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:02:56,776 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:02:56,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:56" (1/1) ... [2024-11-28 03:02:56,794 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:56" (1/1) ... [2024-11-28 03:02:56,822 INFO L138 Inliner]: procedures = 128, calls = 37, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 151 [2024-11-28 03:02:56,822 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:02:56,823 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:02:56,823 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:02:56,823 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:02:56,834 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:56" (1/1) ... [2024-11-28 03:02:56,834 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:56" (1/1) ... [2024-11-28 03:02:56,842 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:56" (1/1) ... [2024-11-28 03:02:56,875 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 5, 13]. 65 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 6 writes are split as follows [0, 1, 5]. [2024-11-28 03:02:56,875 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:56" (1/1) ... [2024-11-28 03:02:56,875 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:56" (1/1) ... [2024-11-28 03:02:56,884 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:56" (1/1) ... [2024-11-28 03:02:56,885 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:56" (1/1) ... [2024-11-28 03:02:56,889 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:56" (1/1) ... [2024-11-28 03:02:56,890 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:56" (1/1) ... [2024-11-28 03:02:56,891 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:56" (1/1) ... [2024-11-28 03:02:56,894 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:02:56,895 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:02:56,895 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:02:56,895 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:02:56,896 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:56" (1/1) ... [2024-11-28 03:02:56,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:02:56,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:02:56,939 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:02:56,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:02:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:02:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:02:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 03:02:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:02:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:02:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 03:02:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2024-11-28 03:02:56,969 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2024-11-28 03:02:56,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 03:02:56,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:02:56,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 03:02:56,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 03:02:56,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 03:02:56,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 03:02:56,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 03:02:56,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 03:02:56,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 03:02:56,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:02:56,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 03:02:56,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 03:02:56,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 03:02:56,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:02:56,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:02:56,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 03:02:56,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:02:56,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:02:57,124 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:02:57,126 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:02:57,576 INFO L? ?]: Removed 116 outVars from TransFormulas that were not future-live. [2024-11-28 03:02:57,577 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:02:57,594 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:02:57,594 INFO L312 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-28 03:02:57,594 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:02:57 BoogieIcfgContainer [2024-11-28 03:02:57,594 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:02:57,599 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:02:57,599 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:02:57,606 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:02:57,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:02:56" (1/3) ... [2024-11-28 03:02:57,607 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34decf8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:02:57, skipping insertion in model container [2024-11-28 03:02:57,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:56" (2/3) ... [2024-11-28 03:02:57,607 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34decf8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:02:57, skipping insertion in model container [2024-11-28 03:02:57,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:02:57" (3/3) ... [2024-11-28 03:02:57,608 INFO L128 eAbstractionObserver]: Analyzing ICFG sll2n_insert_unequal.i [2024-11-28 03:02:57,631 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:02:57,633 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG sll2n_insert_unequal.i that has 2 procedures, 102 locations, 1 initial locations, 5 loop locations, and 39 error locations. [2024-11-28 03:02:57,687 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:02:57,702 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;@18e22226, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:02:57,702 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-11-28 03:02:57,707 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 59 states have (on average 1.9491525423728813) internal successors, (115), 98 states have internal predecessors, (115), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:02:57,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 03:02:57,717 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:02:57,717 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:02:57,717 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting node_createErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:02:57,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:02:57,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1813350647, now seen corresponding path program 1 times [2024-11-28 03:02:57,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:02:57,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833420703] [2024-11-28 03:02:57,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:57,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:02:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:58,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:02:58,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:02:58,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833420703] [2024-11-28 03:02:58,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833420703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:02:58,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:02:58,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:02:58,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743586975] [2024-11-28 03:02:58,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:02:58,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:02:58,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:02:58,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:02:58,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:02:58,040 INFO L87 Difference]: Start difference. First operand has 102 states, 59 states have (on average 1.9491525423728813) internal successors, (115), 98 states have internal predecessors, (115), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:02:58,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:02:58,178 INFO L93 Difference]: Finished difference Result 99 states and 109 transitions. [2024-11-28 03:02:58,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:02:58,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-28 03:02:58,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:02:58,188 INFO L225 Difference]: With dead ends: 99 [2024-11-28 03:02:58,189 INFO L226 Difference]: Without dead ends: 96 [2024-11-28 03:02:58,192 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:02:58,197 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 2 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:02:58,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 166 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:02:58,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-28 03:02:58,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-11-28 03:02:58,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 56 states have (on average 1.8035714285714286) internal successors, (101), 92 states have internal predecessors, (101), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:02:58,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 105 transitions. [2024-11-28 03:02:58,235 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 105 transitions. Word has length 7 [2024-11-28 03:02:58,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:02:58,235 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 105 transitions. [2024-11-28 03:02:58,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:02:58,236 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 105 transitions. [2024-11-28 03:02:58,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 03:02:58,236 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:02:58,236 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:02:58,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:02:58,236 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting node_createErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:02:58,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:02:58,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1813350648, now seen corresponding path program 1 times [2024-11-28 03:02:58,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:02:58,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272745490] [2024-11-28 03:02:58,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:58,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:02:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:58,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:02:58,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:02:58,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272745490] [2024-11-28 03:02:58,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272745490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:02:58,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:02:58,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:02:58,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675514173] [2024-11-28 03:02:58,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:02:58,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:02:58,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:02:58,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:02:58,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:02:58,391 INFO L87 Difference]: Start difference. First operand 96 states and 105 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:02:58,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:02:58,521 INFO L93 Difference]: Finished difference Result 94 states and 103 transitions. [2024-11-28 03:02:58,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:02:58,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-28 03:02:58,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:02:58,524 INFO L225 Difference]: With dead ends: 94 [2024-11-28 03:02:58,524 INFO L226 Difference]: Without dead ends: 94 [2024-11-28 03:02:58,525 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:02:58,526 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 2 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:02:58,527 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 165 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:02:58,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-28 03:02:58,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-28 03:02:58,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 56 states have (on average 1.7678571428571428) internal successors, (99), 90 states have internal predecessors, (99), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:02:58,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 103 transitions. [2024-11-28 03:02:58,540 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 103 transitions. Word has length 7 [2024-11-28 03:02:58,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:02:58,540 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 103 transitions. [2024-11-28 03:02:58,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:02:58,541 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 103 transitions. [2024-11-28 03:02:58,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 03:02:58,542 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:02:58,542 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:02:58,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:02:58,543 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:02:58,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:02:58,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1254987041, now seen corresponding path program 1 times [2024-11-28 03:02:58,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:02:58,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218177103] [2024-11-28 03:02:58,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:58,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:02:58,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:58,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:02:58,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:02:58,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218177103] [2024-11-28 03:02:58,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218177103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:02:58,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:02:58,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:02:58,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727680077] [2024-11-28 03:02:58,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:02:59,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:02:59,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:02:59,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:02:59,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:02:59,001 INFO L87 Difference]: Start difference. First operand 94 states and 103 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:02:59,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:02:59,232 INFO L93 Difference]: Finished difference Result 93 states and 102 transitions. [2024-11-28 03:02:59,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:02:59,235 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-11-28 03:02:59,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:02:59,236 INFO L225 Difference]: With dead ends: 93 [2024-11-28 03:02:59,236 INFO L226 Difference]: Without dead ends: 93 [2024-11-28 03:02:59,236 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:02:59,237 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 1 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:02:59,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 335 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:02:59,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-28 03:02:59,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-28 03:02:59,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 56 states have (on average 1.75) internal successors, (98), 89 states have internal predecessors, (98), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:02:59,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2024-11-28 03:02:59,251 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 13 [2024-11-28 03:02:59,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:02:59,252 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2024-11-28 03:02:59,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:02:59,252 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2024-11-28 03:02:59,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 03:02:59,253 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:02:59,253 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:02:59,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:02:59,253 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:02:59,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:02:59,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1254987042, now seen corresponding path program 1 times [2024-11-28 03:02:59,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:02:59,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564845373] [2024-11-28 03:02:59,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:59,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:02:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:59,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:02:59,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:02:59,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564845373] [2024-11-28 03:02:59,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564845373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:02:59,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:02:59,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:02:59,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116688915] [2024-11-28 03:02:59,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:02:59,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:02:59,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:02:59,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:02:59,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:02:59,364 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:02:59,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:02:59,565 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2024-11-28 03:02:59,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:02:59,565 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-11-28 03:02:59,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:02:59,567 INFO L225 Difference]: With dead ends: 92 [2024-11-28 03:02:59,567 INFO L226 Difference]: Without dead ends: 92 [2024-11-28 03:02:59,567 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:02:59,568 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 2 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:02:59,568 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 319 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:02:59,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-28 03:02:59,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-11-28 03:02:59,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 56 states have (on average 1.7321428571428572) internal successors, (97), 88 states have internal predecessors, (97), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:02:59,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2024-11-28 03:02:59,577 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 13 [2024-11-28 03:02:59,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:02:59,578 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2024-11-28 03:02:59,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:02:59,578 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2024-11-28 03:02:59,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 03:02:59,579 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:02:59,579 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:02:59,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:02:59,579 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:02:59,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:02:59,580 INFO L85 PathProgramCache]: Analyzing trace with hash -35062270, now seen corresponding path program 1 times [2024-11-28 03:02:59,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:02:59,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462337431] [2024-11-28 03:02:59,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:59,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:02:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:59,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:02:59,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:02:59,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462337431] [2024-11-28 03:02:59,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462337431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:02:59,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:02:59,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:02:59,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143425751] [2024-11-28 03:02:59,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:02:59,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:02:59,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:02:59,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:02:59,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:02:59,696 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:02:59,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:02:59,720 INFO L93 Difference]: Finished difference Result 97 states and 107 transitions. [2024-11-28 03:02:59,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:02:59,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-28 03:02:59,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:02:59,722 INFO L225 Difference]: With dead ends: 97 [2024-11-28 03:02:59,722 INFO L226 Difference]: Without dead ends: 97 [2024-11-28 03:02:59,722 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:02:59,723 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 3 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:02:59,723 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 195 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:02:59,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-28 03:02:59,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2024-11-28 03:02:59,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 57 states have (on average 1.719298245614035) internal successors, (98), 89 states have internal predecessors, (98), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:02:59,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2024-11-28 03:02:59,729 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 15 [2024-11-28 03:02:59,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:02:59,730 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2024-11-28 03:02:59,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:02:59,730 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2024-11-28 03:02:59,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-28 03:02:59,731 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:02:59,731 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:02:59,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:02:59,731 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:02:59,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:02:59,732 INFO L85 PathProgramCache]: Analyzing trace with hash 2054263953, now seen corresponding path program 1 times [2024-11-28 03:02:59,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:02:59,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339020519] [2024-11-28 03:02:59,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:59,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:02:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:59,910 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:02:59,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:02:59,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339020519] [2024-11-28 03:02:59,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339020519] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:02:59,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628600357] [2024-11-28 03:02:59,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:59,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:02:59,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:02:59,918 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:02:59,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:03:00,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:00,081 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:03:00,092 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:00,159 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:03:00,161 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:03:00,229 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:03:00,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628600357] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:03:00,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:03:00,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2024-11-28 03:03:00,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17623310] [2024-11-28 03:03:00,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:03:00,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:03:00,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:00,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:03:00,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:03:00,234 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 03:03:00,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:00,261 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2024-11-28 03:03:00,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:03:00,263 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 27 [2024-11-28 03:03:00,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:00,264 INFO L225 Difference]: With dead ends: 98 [2024-11-28 03:03:00,264 INFO L226 Difference]: Without dead ends: 98 [2024-11-28 03:03:00,264 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:03:00,266 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 3 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:00,268 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 196 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:03:00,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-28 03:03:00,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-11-28 03:03:00,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 61 states have (on average 1.6721311475409837) internal successors, (102), 93 states have internal predecessors, (102), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:03:00,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2024-11-28 03:03:00,281 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 27 [2024-11-28 03:03:00,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:00,281 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2024-11-28 03:03:00,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 03:03:00,281 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2024-11-28 03:03:00,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 03:03:00,282 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:00,286 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:00,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:03:00,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 03:03:00,487 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:03:00,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:00,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1811532960, now seen corresponding path program 2 times [2024-11-28 03:03:00,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:00,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303562792] [2024-11-28 03:03:00,488 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:03:00,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:00,546 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:03:00,546 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:03:01,396 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 03:03:01,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:01,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303562792] [2024-11-28 03:03:01,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303562792] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:01,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664181197] [2024-11-28 03:03:01,397 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:03:01,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:01,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:01,401 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:01,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:03:01,626 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:03:01,627 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:03:01,629 INFO L256 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 03:03:01,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:01,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:03:01,692 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true [2024-11-28 03:03:01,793 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-28 03:03:01,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-28 03:03:01,840 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| 1))) is different from true [2024-11-28 03:03:01,884 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-28 03:03:01,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-28 03:03:01,997 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-28 03:03:01,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-28 03:03:02,026 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 14 not checked. [2024-11-28 03:03:02,027 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:03:02,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664181197] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:02,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:03:02,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 14 [2024-11-28 03:03:02,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778702418] [2024-11-28 03:03:02,569 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:03:02,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:03:02,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:02,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:03:02,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=187, Unknown=2, NotChecked=58, Total=306 [2024-11-28 03:03:02,570 INFO L87 Difference]: Start difference. First operand 98 states and 108 transitions. Second operand has 15 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 3 states have call successors, (3), 1 states have call predecessors, (3), 5 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-28 03:03:03,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:03,026 INFO L93 Difference]: Finished difference Result 110 states and 121 transitions. [2024-11-28 03:03:03,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:03:03,027 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 3 states have call successors, (3), 1 states have call predecessors, (3), 5 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 39 [2024-11-28 03:03:03,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:03,028 INFO L225 Difference]: With dead ends: 110 [2024-11-28 03:03:03,028 INFO L226 Difference]: Without dead ends: 110 [2024-11-28 03:03:03,029 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 59 SyntacticMatches, 7 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=264, Unknown=2, NotChecked=70, Total=420 [2024-11-28 03:03:03,029 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 175 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 216 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:03,030 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 300 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 270 Invalid, 0 Unknown, 216 Unchecked, 0.3s Time] [2024-11-28 03:03:03,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-28 03:03:03,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 94. [2024-11-28 03:03:03,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 61 states have (on average 1.6065573770491803) internal successors, (98), 89 states have internal predecessors, (98), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:03:03,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2024-11-28 03:03:03,042 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 39 [2024-11-28 03:03:03,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:03,043 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2024-11-28 03:03:03,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 3 states have call successors, (3), 1 states have call predecessors, (3), 5 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-28 03:03:03,043 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2024-11-28 03:03:03,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 03:03:03,044 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:03,044 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:03,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:03:03,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 03:03:03,245 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:03:03,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:03,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1811532961, now seen corresponding path program 1 times [2024-11-28 03:03:03,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:03,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761924950] [2024-11-28 03:03:03,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:03,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:04,177 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:03:04,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:04,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761924950] [2024-11-28 03:03:04,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761924950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:04,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551312013] [2024-11-28 03:03:04,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:04,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:04,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:04,181 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:04,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:03:04,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:04,349 INFO L256 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 03:03:04,353 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:04,361 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 [2024-11-28 03:03:04,409 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 [2024-11-28 03:03:04,420 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (<= (+ |node_create_~temp~0#1.base| 1) |c_#StackHeapBarrier|) (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|))) is different from true [2024-11-28 03:03:04,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:03:04,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 03:03:04,518 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 [2024-11-28 03:03:04,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:03:04,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 03:03:04,657 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 [2024-11-28 03:03:04,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:03:04,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 03:03:04,763 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 03:03:04,764 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:03:04,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551312013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:04,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:03:04,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 18 [2024-11-28 03:03:04,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360110089] [2024-11-28 03:03:04,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:04,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:03:04,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:04,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:03:04,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=255, Unknown=1, NotChecked=32, Total=342 [2024-11-28 03:03:04,765 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand has 7 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:03:04,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:04,904 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2024-11-28 03:03:04,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:03:04,904 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2024-11-28 03:03:04,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:04,905 INFO L225 Difference]: With dead ends: 96 [2024-11-28 03:03:04,905 INFO L226 Difference]: Without dead ends: 96 [2024-11-28 03:03:04,905 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=286, Unknown=1, NotChecked=34, Total=380 [2024-11-28 03:03:04,906 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 18 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 123 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:04,906 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 237 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 123 Unchecked, 0.1s Time] [2024-11-28 03:03:04,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-28 03:03:04,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 92. [2024-11-28 03:03:04,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 61 states have (on average 1.5737704918032787) internal successors, (96), 87 states have internal predecessors, (96), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:03:04,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 102 transitions. [2024-11-28 03:03:04,911 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 102 transitions. Word has length 39 [2024-11-28 03:03:04,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:04,911 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 102 transitions. [2024-11-28 03:03:04,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:03:04,911 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 102 transitions. [2024-11-28 03:03:04,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-28 03:03:04,912 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:04,912 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:04,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 03:03:05,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 03:03:05,113 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:03:05,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:05,113 INFO L85 PathProgramCache]: Analyzing trace with hash 184687655, now seen corresponding path program 1 times [2024-11-28 03:03:05,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:05,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477980219] [2024-11-28 03:03:05,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:05,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:05,582 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 03:03:05,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:05,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477980219] [2024-11-28 03:03:05,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477980219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:05,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208721871] [2024-11-28 03:03:05,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:05,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:05,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:05,585 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:05,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:03:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:06,032 INFO L256 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-28 03:03:06,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:06,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:03:06,219 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 9 treesize of output 3 [2024-11-28 03:03:06,226 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| 1))) is different from true [2024-11-28 03:03:06,256 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-28 03:03:06,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2024-11-28 03:03:06,301 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 17 treesize of output 9 [2024-11-28 03:03:06,314 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 6 not checked. [2024-11-28 03:03:06,314 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:03:06,506 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 18 treesize of output 10 [2024-11-28 03:03:06,551 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:03:06,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208721871] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:03:06,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:03:06,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 11] total 22 [2024-11-28 03:03:06,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139970134] [2024-11-28 03:03:06,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:03:06,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 03:03:06,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:06,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 03:03:06,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=405, Unknown=1, NotChecked=40, Total=506 [2024-11-28 03:03:06,553 INFO L87 Difference]: Start difference. First operand 92 states and 102 transitions. Second operand has 23 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 20 states have internal predecessors, (62), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-28 03:03:07,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:07,292 INFO L93 Difference]: Finished difference Result 110 states and 123 transitions. [2024-11-28 03:03:07,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 03:03:07,292 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 20 states have internal predecessors, (62), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) Word has length 43 [2024-11-28 03:03:07,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:07,293 INFO L225 Difference]: With dead ends: 110 [2024-11-28 03:03:07,293 INFO L226 Difference]: Without dead ends: 110 [2024-11-28 03:03:07,294 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 75 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=712, Unknown=1, NotChecked=54, Total=870 [2024-11-28 03:03:07,295 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 127 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 115 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:07,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 819 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 793 Invalid, 0 Unknown, 115 Unchecked, 0.6s Time] [2024-11-28 03:03:07,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-28 03:03:07,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 95. [2024-11-28 03:03:07,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 64 states have (on average 1.578125) internal successors, (101), 90 states have internal predecessors, (101), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:03:07,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 107 transitions. [2024-11-28 03:03:07,299 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 107 transitions. Word has length 43 [2024-11-28 03:03:07,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:07,300 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 107 transitions. [2024-11-28 03:03:07,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 20 states have internal predecessors, (62), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-28 03:03:07,300 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 107 transitions. [2024-11-28 03:03:07,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-28 03:03:07,301 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:07,303 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:07,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 03:03:07,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-28 03:03:07,503 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:03:07,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:07,504 INFO L85 PathProgramCache]: Analyzing trace with hash 184687656, now seen corresponding path program 1 times [2024-11-28 03:03:07,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:07,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280030149] [2024-11-28 03:03:07,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:07,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:08,275 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:03:08,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:08,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280030149] [2024-11-28 03:03:08,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280030149] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:08,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295091590] [2024-11-28 03:03:08,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:08,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:08,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:08,278 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:08,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:03:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:08,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-28 03:03:08,495 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:08,539 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 [2024-11-28 03:03:08,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:03:08,914 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 9 treesize of output 3 [2024-11-28 03:03:08,918 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 9 treesize of output 3 [2024-11-28 03:03:08,974 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|node_create_~temp~0#1.base| Int)) (and (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) (exists ((|v_ULTIMATE.start_sll_insert_~head#1.base_BEFORE_CALL_6| Int)) (= (select (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_sll_insert_~head#1.base_BEFORE_CALL_6|) 0) 0))) is different from true [2024-11-28 03:03:09,049 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-11-28 03:03:09,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-11-28 03:03:09,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-28 03:03:09,132 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 17 treesize of output 9 [2024-11-28 03:03:09,214 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 6 not checked. [2024-11-28 03:03:09,214 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:03:09,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295091590] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:09,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:03:09,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 28 [2024-11-28 03:03:09,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378064425] [2024-11-28 03:03:09,503 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:03:09,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-28 03:03:09,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:09,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-28 03:03:09,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=907, Unknown=1, NotChecked=60, Total=1056 [2024-11-28 03:03:09,505 INFO L87 Difference]: Start difference. First operand 95 states and 107 transitions. Second operand has 29 states, 26 states have (on average 2.5) internal successors, (65), 25 states have internal predecessors, (65), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 03:03:10,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:10,912 INFO L93 Difference]: Finished difference Result 117 states and 128 transitions. [2024-11-28 03:03:10,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 03:03:10,913 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 2.5) internal successors, (65), 25 states have internal predecessors, (65), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 43 [2024-11-28 03:03:10,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:10,914 INFO L225 Difference]: With dead ends: 117 [2024-11-28 03:03:10,914 INFO L226 Difference]: Without dead ends: 117 [2024-11-28 03:03:10,915 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=177, Invalid=1806, Unknown=1, NotChecked=86, Total=2070 [2024-11-28 03:03:10,916 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 162 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 118 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:10,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 888 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1073 Invalid, 0 Unknown, 118 Unchecked, 0.8s Time] [2024-11-28 03:03:10,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-28 03:03:10,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 102. [2024-11-28 03:03:10,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 70 states have (on average 1.5142857142857142) internal successors, (106), 96 states have internal predecessors, (106), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:03:10,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 112 transitions. [2024-11-28 03:03:10,923 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 112 transitions. Word has length 43 [2024-11-28 03:03:10,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:10,927 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 112 transitions. [2024-11-28 03:03:10,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 2.5) internal successors, (65), 25 states have internal predecessors, (65), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 03:03:10,927 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 112 transitions. [2024-11-28 03:03:10,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-28 03:03:10,928 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:10,928 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:10,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 03:03:11,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 03:03:11,129 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:03:11,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:11,129 INFO L85 PathProgramCache]: Analyzing trace with hash 184689897, now seen corresponding path program 1 times [2024-11-28 03:03:11,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:11,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258156367] [2024-11-28 03:03:11,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:11,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:11,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:11,200 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 03:03:11,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:11,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258156367] [2024-11-28 03:03:11,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258156367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:11,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:03:11,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:03:11,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511547788] [2024-11-28 03:03:11,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:11,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:03:11,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:11,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:03:11,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:03:11,202 INFO L87 Difference]: Start difference. First operand 102 states and 112 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:03:11,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:11,218 INFO L93 Difference]: Finished difference Result 103 states and 113 transitions. [2024-11-28 03:03:11,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:03:11,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2024-11-28 03:03:11,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:11,220 INFO L225 Difference]: With dead ends: 103 [2024-11-28 03:03:11,220 INFO L226 Difference]: Without dead ends: 103 [2024-11-28 03:03:11,220 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:03:11,221 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 1 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:11,221 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 178 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:03:11,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-28 03:03:11,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-11-28 03:03:11,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 71 states have (on average 1.5070422535211268) internal successors, (107), 97 states have internal predecessors, (107), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:03:11,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 113 transitions. [2024-11-28 03:03:11,225 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 113 transitions. Word has length 43 [2024-11-28 03:03:11,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:11,225 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 113 transitions. [2024-11-28 03:03:11,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:03:11,226 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 113 transitions. [2024-11-28 03:03:11,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-28 03:03:11,226 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:11,226 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:11,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 03:03:11,227 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:03:11,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:11,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1430424500, now seen corresponding path program 1 times [2024-11-28 03:03:11,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:11,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331699008] [2024-11-28 03:03:11,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:11,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:11,352 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-28 03:03:11,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:11,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331699008] [2024-11-28 03:03:11,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331699008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:11,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:03:11,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:03:11,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261760740] [2024-11-28 03:03:11,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:11,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:03:11,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:11,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:03:11,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:03:11,353 INFO L87 Difference]: Start difference. First operand 103 states and 113 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:03:11,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:11,479 INFO L93 Difference]: Finished difference Result 102 states and 112 transitions. [2024-11-28 03:03:11,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:03:11,479 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2024-11-28 03:03:11,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:11,480 INFO L225 Difference]: With dead ends: 102 [2024-11-28 03:03:11,480 INFO L226 Difference]: Without dead ends: 102 [2024-11-28 03:03:11,480 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:03:11,481 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 11 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:11,481 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 287 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:03:11,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-28 03:03:11,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-11-28 03:03:11,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 71 states have (on average 1.4929577464788732) internal successors, (106), 96 states have internal predecessors, (106), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:03:11,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 112 transitions. [2024-11-28 03:03:11,485 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 112 transitions. Word has length 44 [2024-11-28 03:03:11,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:11,485 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 112 transitions. [2024-11-28 03:03:11,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:03:11,486 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 112 transitions. [2024-11-28 03:03:11,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-28 03:03:11,486 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:11,486 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:11,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 03:03:11,486 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:03:11,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:11,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1430424501, now seen corresponding path program 1 times [2024-11-28 03:03:11,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:11,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145797331] [2024-11-28 03:03:11,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:11,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:11,680 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 03:03:11,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:11,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145797331] [2024-11-28 03:03:11,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145797331] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:11,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086987281] [2024-11-28 03:03:11,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:11,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:11,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:11,683 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:11,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:03:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:11,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:03:11,853 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:11,911 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 03:03:11,911 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:03:11,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086987281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:11,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:03:11,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2024-11-28 03:03:11,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326840077] [2024-11-28 03:03:11,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:11,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:03:11,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:11,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:03:11,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:03:11,913 INFO L87 Difference]: Start difference. First operand 102 states and 112 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:03:11,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:11,936 INFO L93 Difference]: Finished difference Result 105 states and 113 transitions. [2024-11-28 03:03:11,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:03:11,936 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2024-11-28 03:03:11,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:11,937 INFO L225 Difference]: With dead ends: 105 [2024-11-28 03:03:11,937 INFO L226 Difference]: Without dead ends: 105 [2024-11-28 03:03:11,937 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:03:11,938 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 63 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:11,938 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 197 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:03:11,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-28 03:03:11,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 101. [2024-11-28 03:03:11,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 70 states have (on average 1.4857142857142858) internal successors, (104), 95 states have internal predecessors, (104), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:03:11,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 110 transitions. [2024-11-28 03:03:11,941 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 110 transitions. Word has length 44 [2024-11-28 03:03:11,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:11,941 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 110 transitions. [2024-11-28 03:03:11,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:03:11,942 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 110 transitions. [2024-11-28 03:03:11,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 03:03:11,942 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:11,942 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:11,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 03:03:12,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 03:03:12,146 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:03:12,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:12,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1186966880, now seen corresponding path program 1 times [2024-11-28 03:03:12,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:12,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82981520] [2024-11-28 03:03:12,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:12,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:12,348 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 03:03:12,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:12,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82981520] [2024-11-28 03:03:12,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82981520] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:12,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958816788] [2024-11-28 03:03:12,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:12,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:12,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:12,350 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:12,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:03:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:12,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 03:03:12,535 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:12,574 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 03:03:12,574 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:03:12,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958816788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:12,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:03:12,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 6 [2024-11-28 03:03:12,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942117261] [2024-11-28 03:03:12,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:12,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:03:12,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:12,575 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:03:12,575 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:03:12,575 INFO L87 Difference]: Start difference. First operand 101 states and 110 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:03:12,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:12,608 INFO L93 Difference]: Finished difference Result 101 states and 108 transitions. [2024-11-28 03:03:12,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:03:12,608 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 47 [2024-11-28 03:03:12,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:12,609 INFO L225 Difference]: With dead ends: 101 [2024-11-28 03:03:12,609 INFO L226 Difference]: Without dead ends: 101 [2024-11-28 03:03:12,609 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:03:12,610 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 55 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:12,610 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 278 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:03:12,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-28 03:03:12,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2024-11-28 03:03:12,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 68 states have (on average 1.4558823529411764) internal successors, (99), 91 states have internal predecessors, (99), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:03:12,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 105 transitions. [2024-11-28 03:03:12,613 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 105 transitions. Word has length 47 [2024-11-28 03:03:12,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:12,614 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 105 transitions. [2024-11-28 03:03:12,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:03:12,614 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 105 transitions. [2024-11-28 03:03:12,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 03:03:12,614 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:12,615 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:12,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 03:03:12,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 03:03:12,816 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:03:12,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:12,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1186969122, now seen corresponding path program 1 times [2024-11-28 03:03:12,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:12,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141961965] [2024-11-28 03:03:12,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:12,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:12,901 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 03:03:12,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:12,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141961965] [2024-11-28 03:03:12,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141961965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:12,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:03:12,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:03:12,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242776019] [2024-11-28 03:03:12,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:12,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:03:12,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:12,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:03:12,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:03:12,903 INFO L87 Difference]: Start difference. First operand 97 states and 105 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:03:12,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:12,984 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2024-11-28 03:03:12,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:03:12,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 47 [2024-11-28 03:03:12,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:12,985 INFO L225 Difference]: With dead ends: 96 [2024-11-28 03:03:12,985 INFO L226 Difference]: Without dead ends: 96 [2024-11-28 03:03:12,985 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:03:12,986 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 0 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:12,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 188 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:03:12,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-28 03:03:12,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-11-28 03:03:12,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 68 states have (on average 1.4411764705882353) internal successors, (98), 90 states have internal predecessors, (98), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:03:12,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2024-11-28 03:03:12,992 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 47 [2024-11-28 03:03:12,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:12,992 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2024-11-28 03:03:12,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:03:12,992 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2024-11-28 03:03:12,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 03:03:12,993 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:12,993 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:12,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 03:03:12,994 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:03:12,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:12,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1186969123, now seen corresponding path program 1 times [2024-11-28 03:03:12,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:12,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740415647] [2024-11-28 03:03:12,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:12,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:13,349 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 03:03:13,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:13,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740415647] [2024-11-28 03:03:13,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740415647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:13,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927699123] [2024-11-28 03:03:13,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:13,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:13,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:13,353 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:13,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:03:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:13,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 03:03:13,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:13,636 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 7 treesize of output 3 [2024-11-28 03:03:13,700 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 03:03:13,700 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:03:13,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927699123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:13,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:03:13,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 14 [2024-11-28 03:03:13,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913021265] [2024-11-28 03:03:13,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:13,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:03:13,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:13,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:03:13,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:03:13,702 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:03:13,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:13,774 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2024-11-28 03:03:13,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:03:13,774 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 47 [2024-11-28 03:03:13,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:13,775 INFO L225 Difference]: With dead ends: 95 [2024-11-28 03:03:13,775 INFO L226 Difference]: Without dead ends: 95 [2024-11-28 03:03:13,775 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:03:13,776 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 0 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:13,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 217 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:03:13,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-28 03:03:13,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-11-28 03:03:13,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 68 states have (on average 1.4264705882352942) internal successors, (97), 89 states have internal predecessors, (97), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:03:13,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2024-11-28 03:03:13,780 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 47 [2024-11-28 03:03:13,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:13,780 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 103 transitions. [2024-11-28 03:03:13,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:03:13,780 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 103 transitions. [2024-11-28 03:03:13,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-28 03:03:13,781 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:13,781 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:13,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 03:03:13,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 03:03:13,982 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:03:13,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:13,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1858662852, now seen corresponding path program 1 times [2024-11-28 03:03:13,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:13,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143838858] [2024-11-28 03:03:13,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:13,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:14,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:14,195 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 03:03:14,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:14,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143838858] [2024-11-28 03:03:14,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143838858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:14,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:03:14,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:03:14,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311420519] [2024-11-28 03:03:14,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:14,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:03:14,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:14,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:03:14,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:03:14,198 INFO L87 Difference]: Start difference. First operand 95 states and 103 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:03:14,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:14,328 INFO L93 Difference]: Finished difference Result 94 states and 102 transitions. [2024-11-28 03:03:14,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:03:14,328 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 48 [2024-11-28 03:03:14,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:14,329 INFO L225 Difference]: With dead ends: 94 [2024-11-28 03:03:14,329 INFO L226 Difference]: Without dead ends: 94 [2024-11-28 03:03:14,330 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:03:14,330 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 2 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:14,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 287 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:03:14,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-28 03:03:14,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-28 03:03:14,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 68 states have (on average 1.411764705882353) internal successors, (96), 88 states have internal predecessors, (96), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:03:14,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 102 transitions. [2024-11-28 03:03:14,337 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 102 transitions. Word has length 48 [2024-11-28 03:03:14,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:14,338 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 102 transitions. [2024-11-28 03:03:14,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:03:14,339 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 102 transitions. [2024-11-28 03:03:14,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-28 03:03:14,339 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:14,339 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2024-11-28 03:03:14,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 03:03:14,340 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:03:14,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:14,340 INFO L85 PathProgramCache]: Analyzing trace with hash 531394461, now seen corresponding path program 1 times [2024-11-28 03:03:14,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:14,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057418474] [2024-11-28 03:03:14,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:14,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:14,557 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-28 03:03:14,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:14,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057418474] [2024-11-28 03:03:14,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057418474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:14,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:03:14,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:03:14,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223012552] [2024-11-28 03:03:14,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:14,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:03:14,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:14,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:03:14,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:03:14,560 INFO L87 Difference]: Start difference. First operand 94 states and 102 transitions. Second operand has 6 states, 4 states have (on average 7.0) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:03:14,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:14,651 INFO L93 Difference]: Finished difference Result 94 states and 102 transitions. [2024-11-28 03:03:14,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:03:14,651 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 7.0) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2024-11-28 03:03:14,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:14,652 INFO L225 Difference]: With dead ends: 94 [2024-11-28 03:03:14,652 INFO L226 Difference]: Without dead ends: 94 [2024-11-28 03:03:14,653 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:03:14,653 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 64 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 158 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 [2024-11-28 03:03:14,653 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 158 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:03:14,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-28 03:03:14,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2024-11-28 03:03:14,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 68 states have (on average 1.3823529411764706) internal successors, (94), 86 states have internal predecessors, (94), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:03:14,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2024-11-28 03:03:14,657 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 50 [2024-11-28 03:03:14,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:14,658 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2024-11-28 03:03:14,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 7.0) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:03:14,658 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2024-11-28 03:03:14,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-28 03:03:14,658 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:14,658 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1] [2024-11-28 03:03:14,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 03:03:14,658 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:03:14,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:14,659 INFO L85 PathProgramCache]: Analyzing trace with hash -477058259, now seen corresponding path program 1 times [2024-11-28 03:03:14,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:14,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704786031] [2024-11-28 03:03:14,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:14,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:14,914 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 03:03:14,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:14,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704786031] [2024-11-28 03:03:14,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704786031] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:14,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663913447] [2024-11-28 03:03:14,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:14,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:14,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:14,917 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:14,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 03:03:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:15,136 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 03:03:15,138 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:15,190 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 9 treesize of output 3 [2024-11-28 03:03:15,261 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-28 03:03:15,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 21 [2024-11-28 03:03:15,370 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 17 treesize of output 9 [2024-11-28 03:03:15,375 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 03:03:15,376 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:03:15,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663913447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:15,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:03:15,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [7] total 15 [2024-11-28 03:03:15,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667450113] [2024-11-28 03:03:15,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:15,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:03:15,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:15,377 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:03:15,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:03:15,378 INFO L87 Difference]: Start difference. First operand 92 states and 100 transitions. Second operand has 13 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:03:15,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:15,738 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2024-11-28 03:03:15,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:03:15,739 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 53 [2024-11-28 03:03:15,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:15,739 INFO L225 Difference]: With dead ends: 96 [2024-11-28 03:03:15,739 INFO L226 Difference]: Without dead ends: 96 [2024-11-28 03:03:15,740 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-28 03:03:15,740 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 144 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:15,741 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 392 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:03:15,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-28 03:03:15,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 92. [2024-11-28 03:03:15,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 71 states have (on average 1.3661971830985915) internal successors, (97), 86 states have internal predecessors, (97), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:03:15,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2024-11-28 03:03:15,744 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 53 [2024-11-28 03:03:15,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:15,744 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2024-11-28 03:03:15,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:03:15,745 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2024-11-28 03:03:15,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-28 03:03:15,745 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:15,745 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1] [2024-11-28 03:03:15,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 03:03:15,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:15,949 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:03:15,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:15,950 INFO L85 PathProgramCache]: Analyzing trace with hash -477058258, now seen corresponding path program 1 times [2024-11-28 03:03:15,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:15,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468257770] [2024-11-28 03:03:15,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:15,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:16,554 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 03:03:16,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:16,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468257770] [2024-11-28 03:03:16,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468257770] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:16,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894793849] [2024-11-28 03:03:16,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:16,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:16,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:16,556 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:16,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 03:03:16,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:16,775 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-28 03:03:16,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:16,792 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 [2024-11-28 03:03:16,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:03:17,089 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 9 treesize of output 3 [2024-11-28 03:03:17,093 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 9 treesize of output 3 [2024-11-28 03:03:17,291 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-11-28 03:03:17,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-11-28 03:03:17,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-28 03:03:17,446 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 17 treesize of output 9 [2024-11-28 03:03:17,459 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:03:17,459 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:03:17,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894793849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:17,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:03:17,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 26 [2024-11-28 03:03:17,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553868925] [2024-11-28 03:03:17,785 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:03:17,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 03:03:17,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:17,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 03:03:17,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=856, Unknown=0, NotChecked=0, Total=930 [2024-11-28 03:03:17,787 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand has 27 states, 25 states have (on average 2.72) internal successors, (68), 23 states have internal predecessors, (68), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-28 03:03:19,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:19,017 INFO L93 Difference]: Finished difference Result 136 states and 153 transitions. [2024-11-28 03:03:19,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 03:03:19,018 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 2.72) internal successors, (68), 23 states have internal predecessors, (68), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 53 [2024-11-28 03:03:19,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:19,019 INFO L225 Difference]: With dead ends: 136 [2024-11-28 03:03:19,019 INFO L226 Difference]: Without dead ends: 136 [2024-11-28 03:03:19,020 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=164, Invalid=1728, Unknown=0, NotChecked=0, Total=1892 [2024-11-28 03:03:19,021 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 78 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:19,021 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 872 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 03:03:19,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-28 03:03:19,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 103. [2024-11-28 03:03:19,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 82 states have (on average 1.3414634146341464) internal successors, (110), 97 states have internal predecessors, (110), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:03:19,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 116 transitions. [2024-11-28 03:03:19,025 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 116 transitions. Word has length 53 [2024-11-28 03:03:19,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:19,026 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 116 transitions. [2024-11-28 03:03:19,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 2.72) internal successors, (68), 23 states have internal predecessors, (68), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-28 03:03:19,026 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 116 transitions. [2024-11-28 03:03:19,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-28 03:03:19,026 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:19,027 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1] [2024-11-28 03:03:19,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 03:03:19,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:19,232 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:03:19,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:19,232 INFO L85 PathProgramCache]: Analyzing trace with hash -210390066, now seen corresponding path program 1 times [2024-11-28 03:03:19,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:19,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236508438] [2024-11-28 03:03:19,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:19,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:19,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:19,572 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 03:03:19,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:19,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236508438] [2024-11-28 03:03:19,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236508438] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:19,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356567620] [2024-11-28 03:03:19,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:19,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:19,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:19,576 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:19,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 03:03:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:19,875 INFO L256 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 03:03:19,877 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:20,202 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 03:03:20,205 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:03:20,205 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 16 treesize of output 11 [2024-11-28 03:03:20,277 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:03:20,277 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:03:20,344 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:03:20,345 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 17 [2024-11-28 03:03:20,560 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 03:03:20,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356567620] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:03:20,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:03:20,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 13] total 27 [2024-11-28 03:03:20,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223469244] [2024-11-28 03:03:20,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:03:20,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 03:03:20,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:20,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 03:03:20,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2024-11-28 03:03:20,562 INFO L87 Difference]: Start difference. First operand 103 states and 116 transitions. Second operand has 27 states, 27 states have (on average 2.740740740740741) internal successors, (74), 24 states have internal predecessors, (74), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (8), 8 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-28 03:03:24,589 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] [2024-11-28 03:03:28,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:03:32,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:03:36,740 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] [2024-11-28 03:03:37,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:37,133 INFO L93 Difference]: Finished difference Result 95 states and 104 transitions. [2024-11-28 03:03:37,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 03:03:37,134 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.740740740740741) internal successors, (74), 24 states have internal predecessors, (74), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (8), 8 states have call predecessors, (8), 5 states have call successors, (8) Word has length 53 [2024-11-28 03:03:37,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:37,135 INFO L225 Difference]: With dead ends: 95 [2024-11-28 03:03:37,135 INFO L226 Difference]: Without dead ends: 95 [2024-11-28 03:03:37,135 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 90 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=159, Invalid=1173, Unknown=0, NotChecked=0, Total=1332 [2024-11-28 03:03:37,136 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 138 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:37,137 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 1207 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 429 Invalid, 4 Unknown, 0 Unchecked, 16.3s Time] [2024-11-28 03:03:37,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-28 03:03:37,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-11-28 03:03:37,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 89 states have internal predecessors, (98), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:03:37,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 104 transitions. [2024-11-28 03:03:37,143 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 104 transitions. Word has length 53 [2024-11-28 03:03:37,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:37,144 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 104 transitions. [2024-11-28 03:03:37,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.740740740740741) internal successors, (74), 24 states have internal predecessors, (74), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (8), 8 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-28 03:03:37,144 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 104 transitions. [2024-11-28 03:03:37,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-28 03:03:37,146 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:37,146 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:37,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 03:03:37,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-28 03:03:37,352 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:03:37,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:37,353 INFO L85 PathProgramCache]: Analyzing trace with hash 203083802, now seen corresponding path program 1 times [2024-11-28 03:03:37,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:37,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906625625] [2024-11-28 03:03:37,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:37,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:38,144 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 03:03:38,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:38,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906625625] [2024-11-28 03:03:38,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906625625] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:38,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412614856] [2024-11-28 03:03:38,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:38,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:38,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:38,148 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:38,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 03:03:38,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:38,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 03:03:38,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:38,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 03:03:38,450 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))) (not (= |node_create_~temp~0#1.base| 0)))) is different from true [2024-11-28 03:03:38,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 03:03:38,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 03:03:38,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 03:03:38,787 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 03:03:38,788 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:03:39,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412614856] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:39,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:03:39,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 8] total 23 [2024-11-28 03:03:39,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759842793] [2024-11-28 03:03:39,175 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:03:39,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 03:03:39,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:39,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 03:03:39,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=634, Unknown=1, NotChecked=50, Total=756 [2024-11-28 03:03:39,176 INFO L87 Difference]: Start difference. First operand 95 states and 104 transitions. Second operand has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 21 states have internal predecessors, (75), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 03:03:40,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:40,236 INFO L93 Difference]: Finished difference Result 101 states and 107 transitions. [2024-11-28 03:03:40,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 03:03:40,237 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 21 states have internal predecessors, (75), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 57 [2024-11-28 03:03:40,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:40,238 INFO L225 Difference]: With dead ends: 101 [2024-11-28 03:03:40,239 INFO L226 Difference]: Without dead ends: 101 [2024-11-28 03:03:40,239 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=227, Invalid=1846, Unknown=1, NotChecked=88, Total=2162 [2024-11-28 03:03:40,241 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 105 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:40,242 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 654 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 822 Invalid, 0 Unknown, 88 Unchecked, 0.5s Time] [2024-11-28 03:03:40,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-28 03:03:40,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 92. [2024-11-28 03:03:40,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 71 states have (on average 1.3098591549295775) internal successors, (93), 86 states have internal predecessors, (93), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:03:40,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2024-11-28 03:03:40,245 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 57 [2024-11-28 03:03:40,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:40,245 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2024-11-28 03:03:40,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 21 states have internal predecessors, (75), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 03:03:40,245 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2024-11-28 03:03:40,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-28 03:03:40,250 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:40,250 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2024-11-28 03:03:40,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 03:03:40,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-28 03:03:40,454 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:03:40,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:40,455 INFO L85 PathProgramCache]: Analyzing trace with hash -221974992, now seen corresponding path program 1 times [2024-11-28 03:03:40,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:40,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336775234] [2024-11-28 03:03:40,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:40,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:40,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:41,951 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 19 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:03:41,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:41,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336775234] [2024-11-28 03:03:41,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336775234] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:41,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436654504] [2024-11-28 03:03:41,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:41,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:41,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:41,954 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:41,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 03:03:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:42,196 INFO L256 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 03:03:42,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:42,434 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 03:03:42,434 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:03:42,666 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 03:03:42,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436654504] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:03:42,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:03:42,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 8, 8] total 38 [2024-11-28 03:03:42,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948868364] [2024-11-28 03:03:42,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:03:42,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-28 03:03:42,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:42,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-28 03:03:42,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1307, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 03:03:42,668 INFO L87 Difference]: Start difference. First operand 92 states and 99 transitions. Second operand has 38 states, 37 states have (on average 2.4594594594594597) internal successors, (91), 35 states have internal predecessors, (91), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 03:03:44,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:44,297 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2024-11-28 03:03:44,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-28 03:03:44,298 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.4594594594594597) internal successors, (91), 35 states have internal predecessors, (91), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 58 [2024-11-28 03:03:44,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:44,298 INFO L225 Difference]: With dead ends: 93 [2024-11-28 03:03:44,298 INFO L226 Difference]: Without dead ends: 93 [2024-11-28 03:03:44,299 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=301, Invalid=3239, Unknown=0, NotChecked=0, Total=3540 [2024-11-28 03:03:44,300 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 86 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 1396 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:44,300 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 1018 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1396 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 03:03:44,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-28 03:03:44,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 85. [2024-11-28 03:03:44,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 68 states have (on average 1.25) internal successors, (85), 79 states have internal predecessors, (85), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:03:44,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2024-11-28 03:03:44,303 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 58 [2024-11-28 03:03:44,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:44,304 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2024-11-28 03:03:44,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.4594594594594597) internal successors, (91), 35 states have internal predecessors, (91), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 03:03:44,304 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2024-11-28 03:03:44,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-28 03:03:44,305 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:44,305 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:44,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 03:03:44,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:44,505 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:03:44,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:44,506 INFO L85 PathProgramCache]: Analyzing trace with hash -221974914, now seen corresponding path program 1 times [2024-11-28 03:03:44,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:44,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779167012] [2024-11-28 03:03:44,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:44,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:46,766 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:03:46,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:46,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779167012] [2024-11-28 03:03:46,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779167012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:46,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452363887] [2024-11-28 03:03:46,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:46,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:46,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:46,769 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:46,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 03:03:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:47,072 INFO L256 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 121 conjuncts are in the unsatisfiable core [2024-11-28 03:03:47,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:47,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:03:47,565 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-28 03:03:47,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-28 03:03:47,594 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-28 03:03:47,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-28 03:03:47,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 03:03:47,741 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 [2024-11-28 03:03:48,140 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 61 treesize of output 19 [2024-11-28 03:03:48,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 3 [2024-11-28 03:03:48,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 03:03:48,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-28 03:03:48,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:03:48,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 52 [2024-11-28 03:03:48,594 INFO L349 Elim1Store]: treesize reduction 41, result has 47.4 percent of original size [2024-11-28 03:03:48,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 41 [2024-11-28 03:03:48,624 INFO L349 Elim1Store]: treesize reduction 8, result has 77.1 percent of original size [2024-11-28 03:03:48,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 36 [2024-11-28 03:03:48,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2024-11-28 03:03:49,040 INFO L349 Elim1Store]: treesize reduction 35, result has 48.5 percent of original size [2024-11-28 03:03:49,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 60 [2024-11-28 03:03:49,059 INFO L349 Elim1Store]: treesize reduction 51, result has 25.0 percent of original size [2024-11-28 03:03:49,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 30 [2024-11-28 03:03:49,333 INFO L349 Elim1Store]: treesize reduction 25, result has 26.5 percent of original size [2024-11-28 03:03:49,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 123 treesize of output 107 [2024-11-28 03:03:49,366 INFO L349 Elim1Store]: treesize reduction 25, result has 26.5 percent of original size [2024-11-28 03:03:49,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 138 treesize of output 140 [2024-11-28 03:03:49,429 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 3 [2024-11-28 03:03:49,777 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 172 treesize of output 124 [2024-11-28 03:03:49,782 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 128 treesize of output 96 [2024-11-28 03:03:50,165 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 93 treesize of output 51 [2024-11-28 03:03:50,171 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 9 treesize of output 3 [2024-11-28 03:03:50,653 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:03:50,654 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:03:51,198 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse1 (+ (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (and (forall ((v_ArrVal_2101 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2101) .cse0) .cse1))) (forall ((v_ArrVal_2101 (Array Int Int)) (v_ArrVal_2100 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2101) .cse0) .cse1) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2100) .cse0) .cse1)))))) is different from false [2024-11-28 03:04:00,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452363887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:04:00,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:04:00,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 29] total 57 [2024-11-28 03:04:00,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098957453] [2024-11-28 03:04:00,007 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:04:00,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-28 03:04:00,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:00,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-28 03:04:00,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=4203, Unknown=33, NotChecked=130, Total=4556 [2024-11-28 03:04:00,009 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand has 58 states, 55 states have (on average 1.7454545454545454) internal successors, (96), 49 states have internal predecessors, (96), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 03:04:07,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:04:07,783 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2024-11-28 03:04:07,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-28 03:04:07,784 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 55 states have (on average 1.7454545454545454) internal successors, (96), 49 states have internal predecessors, (96), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 58 [2024-11-28 03:04:07,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:04:07,785 INFO L225 Difference]: With dead ends: 94 [2024-11-28 03:04:07,785 INFO L226 Difference]: Without dead ends: 94 [2024-11-28 03:04:07,787 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1829 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=467, Invalid=8434, Unknown=33, NotChecked=186, Total=9120 [2024-11-28 03:04:07,787 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 127 mSDsluCounter, 1704 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 1753 SdHoareTripleChecker+Invalid, 2273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:04:07,787 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 1753 Invalid, 2273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-28 03:04:07,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-28 03:04:07,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 83. [2024-11-28 03:04:07,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 68 states have (on average 1.2205882352941178) internal successors, (83), 77 states have internal predecessors, (83), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:04:07,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2024-11-28 03:04:07,796 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 58 [2024-11-28 03:04:07,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:04:07,796 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2024-11-28 03:04:07,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 55 states have (on average 1.7454545454545454) internal successors, (96), 49 states have internal predecessors, (96), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 03:04:07,797 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2024-11-28 03:04:07,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-28 03:04:07,797 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:04:07,797 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:04:07,808 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 03:04:07,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:07,998 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:04:07,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:07,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1708737721, now seen corresponding path program 1 times [2024-11-28 03:04:07,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:07,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697341348] [2024-11-28 03:04:07,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:07,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:09,742 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:04:09,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:09,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697341348] [2024-11-28 03:04:09,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697341348] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:04:09,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543039262] [2024-11-28 03:04:09,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:09,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:09,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:04:09,745 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:04:09,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 03:04:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:10,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-11-28 03:04:10,145 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:04:10,317 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 [2024-11-28 03:04:10,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 03:04:10,902 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 9 treesize of output 3 [2024-11-28 03:04:10,906 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 11 treesize of output 3 [2024-11-28 03:04:11,324 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-11-28 03:04:11,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-11-28 03:04:11,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-28 03:04:12,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-28 03:04:12,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-28 03:04:12,276 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 11 [2024-11-28 03:04:12,479 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:04:12,479 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:04:13,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543039262] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:04:13,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:04:13,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 49 [2024-11-28 03:04:13,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794533032] [2024-11-28 03:04:13,633 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:04:13,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-28 03:04:13,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:13,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-28 03:04:13,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=3208, Unknown=1, NotChecked=0, Total=3422 [2024-11-28 03:04:13,634 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand has 49 states, 47 states have (on average 1.9574468085106382) internal successors, (92), 43 states have internal predecessors, (92), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 03:04:16,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:04:16,061 INFO L93 Difference]: Finished difference Result 87 states and 91 transitions. [2024-11-28 03:04:16,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-28 03:04:16,062 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 47 states have (on average 1.9574468085106382) internal successors, (92), 43 states have internal predecessors, (92), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 59 [2024-11-28 03:04:16,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:04:16,062 INFO L225 Difference]: With dead ends: 87 [2024-11-28 03:04:16,062 INFO L226 Difference]: Without dead ends: 87 [2024-11-28 03:04:16,064 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1260 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=414, Invalid=5905, Unknown=1, NotChecked=0, Total=6320 [2024-11-28 03:04:16,064 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 50 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:04:16,065 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 1220 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1303 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 03:04:16,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-28 03:04:16,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2024-11-28 03:04:16,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 68 states have (on average 1.2058823529411764) internal successors, (82), 77 states have internal predecessors, (82), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:04:16,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2024-11-28 03:04:16,068 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 59 [2024-11-28 03:04:16,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:04:16,069 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2024-11-28 03:04:16,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 47 states have (on average 1.9574468085106382) internal successors, (92), 43 states have internal predecessors, (92), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 03:04:16,069 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2024-11-28 03:04:16,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 03:04:16,070 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:04:16,070 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:04:16,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 03:04:16,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-28 03:04:16,270 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:04:16,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:16,271 INFO L85 PathProgramCache]: Analyzing trace with hash 295688605, now seen corresponding path program 1 times [2024-11-28 03:04:16,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:16,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864205911] [2024-11-28 03:04:16,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:16,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:16,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:18,532 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:04:18,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:18,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864205911] [2024-11-28 03:04:18,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864205911] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:04:18,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132401275] [2024-11-28 03:04:18,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:18,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:18,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:04:18,534 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:04:18,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 03:04:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:18,826 INFO L256 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 125 conjuncts are in the unsatisfiable core [2024-11-28 03:04:18,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:04:19,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:04:19,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 03:04:19,563 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 11 treesize of output 3 [2024-11-28 03:04:19,567 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 9 treesize of output 3 [2024-11-28 03:04:19,842 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 [2024-11-28 03:04:20,091 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-28 03:04:20,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2024-11-28 03:04:20,133 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-11-28 03:04:20,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-11-28 03:04:20,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 3 [2024-11-28 03:04:20,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-28 03:04:20,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 03:04:21,129 INFO L349 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2024-11-28 03:04:21,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 76 [2024-11-28 03:04:21,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 19 [2024-11-28 03:04:21,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 15 [2024-11-28 03:04:21,344 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 50 treesize of output 30 [2024-11-28 03:04:21,571 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 27 treesize of output 15 [2024-11-28 03:04:21,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 03:04:21,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 03:04:21,808 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:04:21,808 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:04:22,708 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2407 (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.offset_34| Int) (v_ArrVal_2409 (Array Int Int)) (v_ArrVal_2408 (Array Int Int))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse1 (+ (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (or (< (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2409) .cse0) .cse1) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|) (< |v_ULTIMATE.start_main_~ptr~0#1.offset_34| 0) (not (= (let ((.cse2 (+ |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset| 4))) (store (select |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse2 (select v_ArrVal_2407 .cse2))) v_ArrVal_2407)) (= (select (select (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2407) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2408) .cse0) .cse1)) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|) |c_ULTIMATE.start_main_~uneq~0#1|)))) is different from false [2024-11-28 03:04:22,730 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:04:22,731 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 41 [2024-11-28 03:04:22,755 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:04:22,755 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 76 treesize of output 75 [2024-11-28 03:04:22,769 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 29 treesize of output 21 [2024-11-28 03:04:23,423 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse11 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse1 (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.base|)) (.cse2 (+ |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.offset| 4)) (.cse4 (+ .cse11 4)) (.cse5 (+ |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset| 4)) (.cse8 (= |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| .cse3))) (let ((.cse0 (not .cse8)) (.cse6 (or .cse8 (forall ((v_ArrVal_2407 (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.offset_34| Int) (v_ArrVal_2404 (Array Int Int)) (v_ArrVal_2403 Int) (v_ArrVal_2409 (Array Int Int)) (v_arrayElimCell_88 Int)) (let ((.cse14 (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.base| v_ArrVal_2404))) (or (< (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.base| (store .cse1 .cse2 v_ArrVal_2403)) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2409) .cse3) .cse4) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store .cse14 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2407) v_arrayElimCell_88) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|)) (< |v_ULTIMATE.start_main_~ptr~0#1.offset_34| 0) (not (= v_ArrVal_2407 (store (select .cse14 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse5 (select v_ArrVal_2407 .cse5)))) (< |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset| v_ArrVal_2403)))))) (.cse7 (forall ((v_ArrVal_2403 Int)) (or (forall ((|v_ULTIMATE.start_main_~ptr~0#1.offset_34| Int) (v_ArrVal_2409 (Array Int Int))) (or (< (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.base| (store .cse1 .cse2 v_ArrVal_2403)) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2409) .cse3) .cse4) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|) (< |v_ULTIMATE.start_main_~ptr~0#1.offset_34| 0) (forall ((v_ArrVal_2407 (Array Int Int)) (v_ArrVal_2404 (Array Int Int)) (v_arrayElimCell_89 Int) (v_arrayElimCell_88 Int)) (let ((.cse13 (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.base| v_ArrVal_2404))) (let ((.cse12 (store .cse13 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2407))) (or (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select .cse12 v_arrayElimCell_88) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|)) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select .cse12 v_arrayElimCell_89) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|)) (not (= v_ArrVal_2407 (store (select .cse13 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse5 (select v_ArrVal_2407 .cse5)))))))))) (< |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset| v_ArrVal_2403))))) (and (or (and (or .cse0 (forall ((v_ArrVal_2407 (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.offset_34| Int) (v_ArrVal_2404 (Array Int Int)) (v_ArrVal_2403 Int) (v_arrayElimCell_89 Int) (v_ArrVal_2409 (Array Int Int))) (or (< (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.base| (store .cse1 .cse2 v_ArrVal_2403)) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2409) .cse3) .cse4) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.base| v_ArrVal_2404) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2407) v_arrayElimCell_89) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|)) (< |v_ULTIMATE.start_main_~ptr~0#1.offset_34| 0) (not (= (store (select |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse5 (select v_ArrVal_2407 .cse5)) v_ArrVal_2407)) (< |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset| v_ArrVal_2403)))) .cse6 .cse7) (= |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.base| .cse3)) (or (forall ((|v_ULTIMATE.start_main_~ptr~0#1.offset_34| Int) (v_ArrVal_2404 (Array Int Int)) (v_ArrVal_2403 Int) (v_DerPreprocessor_5 Int) (v_ArrVal_2409 (Array Int Int))) (or (< (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.base| (store .cse1 .cse2 v_ArrVal_2403)) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2409) .cse3) .cse4) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|) (< |v_ULTIMATE.start_main_~ptr~0#1.offset_34| 0) (< |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset| v_ArrVal_2403) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (store (select (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.base| v_ArrVal_2404) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse5 v_DerPreprocessor_5) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|)))) .cse8) (forall ((v_ArrVal_2403 Int)) (or (forall ((|v_ULTIMATE.start_main_~ptr~0#1.offset_34| Int) (v_ArrVal_2409 (Array Int Int))) (or (forall ((v_ArrVal_2407 (Array Int Int)) (v_ArrVal_2404 (Array Int Int)) (v_arrayElimCell_89 Int)) (let ((.cse9 (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.base| v_ArrVal_2404))) (or (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store .cse9 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2407) v_arrayElimCell_89) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|)) (not (= v_ArrVal_2407 (store (select .cse9 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse5 (select v_ArrVal_2407 .cse5)))) (= |c_ULTIMATE.start_main_~uneq~0#1| (select v_ArrVal_2407 |v_ULTIMATE.start_main_~ptr~0#1.offset_34|))))) (< (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.base| (store .cse1 .cse2 v_ArrVal_2403)) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2409) .cse3) .cse4) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|) (< |v_ULTIMATE.start_main_~ptr~0#1.offset_34| 0))) (< |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset| v_ArrVal_2403))) (or (forall ((v_ArrVal_2407 (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.offset_34| Int) (v_ArrVal_2404 (Array Int Int)) (v_ArrVal_2403 Int) (v_arrayElimCell_89 Int) (v_ArrVal_2409 (Array Int Int))) (let ((.cse10 (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.base| v_ArrVal_2404))) (or (< (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.base| (store .cse1 .cse2 v_ArrVal_2403)) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2409) .cse3) .cse4) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store .cse10 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2407) v_arrayElimCell_89) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|)) (< |v_ULTIMATE.start_main_~ptr~0#1.offset_34| 0) (not (= v_ArrVal_2407 (store (select .cse10 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse5 (select v_ArrVal_2407 .cse5)))) (< |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset| v_ArrVal_2403)))) .cse0) (or (= |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.offset| .cse11) (and .cse6 .cse7)))))) is different from false [2024-11-28 03:04:25,243 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse11 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse5 (+ |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset| 4)) (.cse0 (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_insert_~last~0#1.base|)) (.cse1 (+ |c_ULTIMATE.start_sll_insert_~last~0#1.offset| 4)) (.cse3 (+ .cse11 4)) (.cse6 (= |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| .cse2))) (let ((.cse8 (not .cse6)) (.cse9 (forall ((v_ArrVal_2403 Int)) (or (forall ((|v_ULTIMATE.start_main_~ptr~0#1.offset_34| Int) (v_ArrVal_2409 (Array Int Int))) (or (< |v_ULTIMATE.start_main_~ptr~0#1.offset_34| 0) (forall ((v_ArrVal_2407 (Array Int Int)) (v_ArrVal_2404 (Array Int Int)) (v_arrayElimCell_89 Int) (v_arrayElimCell_88 Int)) (let ((.cse14 (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~last~0#1.base| v_ArrVal_2404))) (let ((.cse13 (store .cse14 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2407))) (or (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select .cse13 v_arrayElimCell_89) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|)) (not (= v_ArrVal_2407 (store (select .cse14 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse5 (select v_ArrVal_2407 .cse5)))) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select .cse13 v_arrayElimCell_88) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|)))))) (< (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_insert_~last~0#1.base| (store .cse0 .cse1 v_ArrVal_2403)) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2409) .cse2) .cse3) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|))) (< |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset| v_ArrVal_2403)))) (.cse10 (or (forall ((v_ArrVal_2407 (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.offset_34| Int) (v_ArrVal_2404 (Array Int Int)) (v_ArrVal_2403 Int) (v_ArrVal_2409 (Array Int Int)) (v_arrayElimCell_88 Int)) (let ((.cse12 (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~last~0#1.base| v_ArrVal_2404))) (or (not (= v_ArrVal_2407 (store (select .cse12 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse5 (select v_ArrVal_2407 .cse5)))) (< |v_ULTIMATE.start_main_~ptr~0#1.offset_34| 0) (< (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_insert_~last~0#1.base| (store .cse0 .cse1 v_ArrVal_2403)) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2409) .cse2) .cse3) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store .cse12 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2407) v_arrayElimCell_88) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|)) (< |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset| v_ArrVal_2403)))) .cse6))) (and (forall ((v_ArrVal_2403 Int)) (or (forall ((|v_ULTIMATE.start_main_~ptr~0#1.offset_34| Int) (v_ArrVal_2409 (Array Int Int))) (or (< |v_ULTIMATE.start_main_~ptr~0#1.offset_34| 0) (< (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_insert_~last~0#1.base| (store .cse0 .cse1 v_ArrVal_2403)) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2409) .cse2) .cse3) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|) (forall ((v_ArrVal_2407 (Array Int Int)) (v_ArrVal_2404 (Array Int Int)) (v_arrayElimCell_89 Int)) (let ((.cse4 (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~last~0#1.base| v_ArrVal_2404))) (or (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store .cse4 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2407) v_arrayElimCell_89) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|)) (not (= v_ArrVal_2407 (store (select .cse4 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse5 (select v_ArrVal_2407 .cse5)))) (= |c_ULTIMATE.start_main_~uneq~0#1| (select v_ArrVal_2407 |v_ULTIMATE.start_main_~ptr~0#1.offset_34|))))))) (< |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset| v_ArrVal_2403))) (or .cse6 (forall ((|v_ULTIMATE.start_main_~ptr~0#1.offset_34| Int) (v_ArrVal_2404 (Array Int Int)) (v_ArrVal_2403 Int) (v_DerPreprocessor_5 Int) (v_ArrVal_2409 (Array Int Int))) (or (< |v_ULTIMATE.start_main_~ptr~0#1.offset_34| 0) (= (select (store (select (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~last~0#1.base| v_ArrVal_2404) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse5 v_DerPreprocessor_5) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|) |c_ULTIMATE.start_main_~uneq~0#1|) (< (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_insert_~last~0#1.base| (store .cse0 .cse1 v_ArrVal_2403)) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2409) .cse2) .cse3) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|) (< |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset| v_ArrVal_2403)))) (or (forall ((v_ArrVal_2407 (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.offset_34| Int) (v_ArrVal_2404 (Array Int Int)) (v_ArrVal_2403 Int) (v_arrayElimCell_89 Int) (v_ArrVal_2409 (Array Int Int))) (let ((.cse7 (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~last~0#1.base| v_ArrVal_2404))) (or (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store .cse7 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2407) v_arrayElimCell_89) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|)) (not (= v_ArrVal_2407 (store (select .cse7 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse5 (select v_ArrVal_2407 .cse5)))) (< |v_ULTIMATE.start_main_~ptr~0#1.offset_34| 0) (< (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_insert_~last~0#1.base| (store .cse0 .cse1 v_ArrVal_2403)) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2409) .cse2) .cse3) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|) (< |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset| v_ArrVal_2403)))) .cse8) (or (and .cse9 (or .cse8 (forall ((v_ArrVal_2407 (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.offset_34| Int) (v_ArrVal_2404 (Array Int Int)) (v_ArrVal_2403 Int) (v_arrayElimCell_89 Int) (v_ArrVal_2409 (Array Int Int))) (or (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~last~0#1.base| v_ArrVal_2404) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2407) v_arrayElimCell_89) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|)) (< |v_ULTIMATE.start_main_~ptr~0#1.offset_34| 0) (not (= (store (select |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse5 (select v_ArrVal_2407 .cse5)) v_ArrVal_2407)) (< (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_insert_~last~0#1.base| (store .cse0 .cse1 v_ArrVal_2403)) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2409) .cse2) .cse3) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|) (< |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset| v_ArrVal_2403)))) .cse10) (= .cse2 |c_ULTIMATE.start_sll_insert_~last~0#1.base|)) (or (= .cse11 |c_ULTIMATE.start_sll_insert_~last~0#1.offset|) (and .cse9 .cse10)))))) is different from false [2024-11-28 03:04:25,815 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse11 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse0 (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_insert_#t~mem8#1.base|)) (.cse1 (+ |c_ULTIMATE.start_sll_insert_#t~mem8#1.offset| 4)) (.cse3 (+ .cse11 4)) (.cse5 (+ |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset| 4)) (.cse9 (= |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| .cse2))) (let ((.cse6 (not .cse9)) (.cse7 (forall ((v_ArrVal_2403 Int)) (or (forall ((|v_ULTIMATE.start_main_~ptr~0#1.offset_34| Int) (v_ArrVal_2409 (Array Int Int))) (or (< (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_insert_#t~mem8#1.base| (store .cse0 .cse1 v_ArrVal_2403)) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2409) .cse2) .cse3) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|) (< |v_ULTIMATE.start_main_~ptr~0#1.offset_34| 0) (forall ((v_ArrVal_2407 (Array Int Int)) (v_ArrVal_2404 (Array Int Int)) (v_arrayElimCell_89 Int) (v_arrayElimCell_88 Int)) (let ((.cse14 (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_#t~mem8#1.base| v_ArrVal_2404))) (let ((.cse13 (store .cse14 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2407))) (or (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select .cse13 v_arrayElimCell_89) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|)) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select .cse13 v_arrayElimCell_88) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|)) (not (= (store (select .cse14 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse5 (select v_ArrVal_2407 .cse5)) v_ArrVal_2407)))))))) (< |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset| v_ArrVal_2403)))) (.cse8 (or .cse9 (forall ((v_ArrVal_2407 (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.offset_34| Int) (v_ArrVal_2404 (Array Int Int)) (v_ArrVal_2403 Int) (v_ArrVal_2409 (Array Int Int)) (v_arrayElimCell_88 Int)) (let ((.cse12 (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_#t~mem8#1.base| v_ArrVal_2404))) (or (< (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_insert_#t~mem8#1.base| (store .cse0 .cse1 v_ArrVal_2403)) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2409) .cse2) .cse3) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|) (< |v_ULTIMATE.start_main_~ptr~0#1.offset_34| 0) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store .cse12 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2407) v_arrayElimCell_88) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|)) (not (= (store (select .cse12 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse5 (select v_ArrVal_2407 .cse5)) v_ArrVal_2407)) (< |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset| v_ArrVal_2403))))))) (and (forall ((v_ArrVal_2403 Int)) (or (forall ((|v_ULTIMATE.start_main_~ptr~0#1.offset_34| Int) (v_ArrVal_2409 (Array Int Int))) (or (< (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_insert_#t~mem8#1.base| (store .cse0 .cse1 v_ArrVal_2403)) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2409) .cse2) .cse3) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|) (< |v_ULTIMATE.start_main_~ptr~0#1.offset_34| 0) (forall ((v_ArrVal_2407 (Array Int Int)) (v_ArrVal_2404 (Array Int Int)) (v_arrayElimCell_89 Int)) (let ((.cse4 (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_#t~mem8#1.base| v_ArrVal_2404))) (or (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store .cse4 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2407) v_arrayElimCell_89) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|)) (not (= (store (select .cse4 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse5 (select v_ArrVal_2407 .cse5)) v_ArrVal_2407)) (= |c_ULTIMATE.start_main_~uneq~0#1| (select v_ArrVal_2407 |v_ULTIMATE.start_main_~ptr~0#1.offset_34|))))))) (< |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset| v_ArrVal_2403))) (or (and (or .cse6 (forall ((v_ArrVal_2407 (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.offset_34| Int) (v_ArrVal_2404 (Array Int Int)) (v_ArrVal_2403 Int) (v_arrayElimCell_89 Int) (v_ArrVal_2409 (Array Int Int))) (or (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_#t~mem8#1.base| v_ArrVal_2404) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2407) v_arrayElimCell_89) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|)) (< (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_insert_#t~mem8#1.base| (store .cse0 .cse1 v_ArrVal_2403)) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2409) .cse2) .cse3) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|) (< |v_ULTIMATE.start_main_~ptr~0#1.offset_34| 0) (not (= (store (select |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse5 (select v_ArrVal_2407 .cse5)) v_ArrVal_2407)) (< |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset| v_ArrVal_2403)))) .cse7 .cse8) (= |c_ULTIMATE.start_sll_insert_#t~mem8#1.base| .cse2)) (or .cse9 (forall ((|v_ULTIMATE.start_main_~ptr~0#1.offset_34| Int) (v_ArrVal_2404 (Array Int Int)) (v_ArrVal_2403 Int) (v_DerPreprocessor_5 Int) (v_ArrVal_2409 (Array Int Int))) (or (< (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_insert_#t~mem8#1.base| (store .cse0 .cse1 v_ArrVal_2403)) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2409) .cse2) .cse3) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (store (select (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_#t~mem8#1.base| v_ArrVal_2404) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse5 v_DerPreprocessor_5) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|)) (< |v_ULTIMATE.start_main_~ptr~0#1.offset_34| 0) (< |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset| v_ArrVal_2403)))) (or .cse6 (forall ((v_ArrVal_2407 (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.offset_34| Int) (v_ArrVal_2404 (Array Int Int)) (v_ArrVal_2403 Int) (v_arrayElimCell_89 Int) (v_ArrVal_2409 (Array Int Int))) (let ((.cse10 (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_#t~mem8#1.base| v_ArrVal_2404))) (or (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store .cse10 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2407) v_arrayElimCell_89) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|)) (< (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_insert_#t~mem8#1.base| (store .cse0 .cse1 v_ArrVal_2403)) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2409) .cse2) .cse3) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|) (< |v_ULTIMATE.start_main_~ptr~0#1.offset_34| 0) (not (= (store (select .cse10 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse5 (select v_ArrVal_2407 .cse5)) v_ArrVal_2407)) (< |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset| v_ArrVal_2403))))) (or (= |c_ULTIMATE.start_sll_insert_#t~mem8#1.offset| .cse11) (and .cse7 .cse8)))))) is different from false [2024-11-28 03:04:26,131 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse5 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse9 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse10 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_insert_~head#1.base|) |c_ULTIMATE.start_sll_insert_~head#1.offset|)) (.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_insert_~head#1.base|) |c_ULTIMATE.start_sll_insert_~head#1.offset|))) (let ((.cse2 (+ |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset| 4)) (.cse3 (select |c_#memory_$Pointer$#2.offset| .cse1)) (.cse4 (+ .cse10 4)) (.cse6 (+ .cse9 4)) (.cse0 (= |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| .cse5))) (let ((.cse11 (not .cse0)) (.cse7 (forall ((v_ArrVal_2403 Int)) (or (< |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset| v_ArrVal_2403) (forall ((|v_ULTIMATE.start_main_~ptr~0#1.offset_34| Int) (v_ArrVal_2409 (Array Int Int))) (or (< |v_ULTIMATE.start_main_~ptr~0#1.offset_34| 0) (forall ((v_ArrVal_2407 (Array Int Int)) (v_ArrVal_2404 (Array Int Int)) (v_arrayElimCell_89 Int) (v_arrayElimCell_88 Int)) (let ((.cse15 (store |c_#memory_int#2| .cse1 v_ArrVal_2404))) (let ((.cse16 (store .cse15 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2407))) (or (not (= (store (select .cse15 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse2 (select v_ArrVal_2407 .cse2)) v_ArrVal_2407)) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select .cse16 v_arrayElimCell_89) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|)) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select .cse16 v_arrayElimCell_88) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|)))))) (< (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse1 (store .cse3 .cse4 v_ArrVal_2403)) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2409) .cse5) .cse6) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|)))))) (.cse8 (or (forall ((v_ArrVal_2407 (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.offset_34| Int) (v_ArrVal_2404 (Array Int Int)) (v_ArrVal_2403 Int) (v_ArrVal_2409 (Array Int Int)) (v_arrayElimCell_88 Int)) (let ((.cse14 (store |c_#memory_int#2| .cse1 v_ArrVal_2404))) (or (not (= (store (select .cse14 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse2 (select v_ArrVal_2407 .cse2)) v_ArrVal_2407)) (< |v_ULTIMATE.start_main_~ptr~0#1.offset_34| 0) (< (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse1 (store .cse3 .cse4 v_ArrVal_2403)) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2409) .cse5) .cse6) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store .cse14 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2407) v_arrayElimCell_88) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|)) (< |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset| v_ArrVal_2403)))) .cse0))) (and (or .cse0 (forall ((|v_ULTIMATE.start_main_~ptr~0#1.offset_34| Int) (v_ArrVal_2404 (Array Int Int)) (v_ArrVal_2403 Int) (v_DerPreprocessor_5 Int) (v_ArrVal_2409 (Array Int Int))) (or (= |c_ULTIMATE.start_main_~uneq~0#1| (select (store (select (store |c_#memory_int#2| .cse1 v_ArrVal_2404) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse2 v_DerPreprocessor_5) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|)) (< |v_ULTIMATE.start_main_~ptr~0#1.offset_34| 0) (< (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse1 (store .cse3 .cse4 v_ArrVal_2403)) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2409) .cse5) .cse6) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|) (< |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset| v_ArrVal_2403)))) (or (and .cse7 .cse8) (= .cse9 .cse10)) (or .cse11 (forall ((v_ArrVal_2407 (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.offset_34| Int) (v_ArrVal_2404 (Array Int Int)) (v_ArrVal_2403 Int) (v_arrayElimCell_89 Int) (v_ArrVal_2409 (Array Int Int))) (let ((.cse12 (store |c_#memory_int#2| .cse1 v_ArrVal_2404))) (or (not (= (store (select .cse12 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse2 (select v_ArrVal_2407 .cse2)) v_ArrVal_2407)) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store .cse12 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2407) v_arrayElimCell_89) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|)) (< |v_ULTIMATE.start_main_~ptr~0#1.offset_34| 0) (< (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse1 (store .cse3 .cse4 v_ArrVal_2403)) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2409) .cse5) .cse6) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|) (< |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset| v_ArrVal_2403))))) (forall ((v_ArrVal_2403 Int)) (or (forall ((|v_ULTIMATE.start_main_~ptr~0#1.offset_34| Int) (v_ArrVal_2409 (Array Int Int))) (or (forall ((v_ArrVal_2407 (Array Int Int)) (v_ArrVal_2404 (Array Int Int)) (v_arrayElimCell_89 Int)) (let ((.cse13 (store |c_#memory_int#2| .cse1 v_ArrVal_2404))) (or (not (= (store (select .cse13 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse2 (select v_ArrVal_2407 .cse2)) v_ArrVal_2407)) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store .cse13 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2407) v_arrayElimCell_89) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|)) (= |c_ULTIMATE.start_main_~uneq~0#1| (select v_ArrVal_2407 |v_ULTIMATE.start_main_~ptr~0#1.offset_34|))))) (< |v_ULTIMATE.start_main_~ptr~0#1.offset_34| 0) (< (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse1 (store .cse3 .cse4 v_ArrVal_2403)) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2409) .cse5) .cse6) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|))) (< |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset| v_ArrVal_2403))) (or (and (or (forall ((v_ArrVal_2407 (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.offset_34| Int) (v_ArrVal_2404 (Array Int Int)) (v_ArrVal_2403 Int) (v_arrayElimCell_89 Int) (v_ArrVal_2409 (Array Int Int))) (or (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store (store |c_#memory_int#2| .cse1 v_ArrVal_2404) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2407) v_arrayElimCell_89) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|)) (< |v_ULTIMATE.start_main_~ptr~0#1.offset_34| 0) (not (= (store (select |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse2 (select v_ArrVal_2407 .cse2)) v_ArrVal_2407)) (< (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse1 (store .cse3 .cse4 v_ArrVal_2403)) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_2409) .cse5) .cse6) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|) (< |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset| v_ArrVal_2403))) .cse11) .cse7 .cse8) (= .cse5 .cse1)))))) is different from false [2024-11-28 03:04:26,485 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse3 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_insert_~head#1.base|) |c_ULTIMATE.start_sll_insert_~head#1.offset|)) (.cse4 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_insert_~head#1.base|) |c_ULTIMATE.start_sll_insert_~head#1.offset|)) (.cse7 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse10 (= |c_ULTIMATE.start_sll_insert_#t~ret7#1.base| .cse7)) (.cse9 (+ 4 |c_ULTIMATE.start_sll_insert_#t~ret7#1.offset|)) (.cse5 (select |c_#memory_$Pointer$#2.offset| .cse4)) (.cse6 (+ .cse3 4)) (.cse8 (+ .cse2 4))) (let ((.cse0 (or .cse10 (forall ((v_ArrVal_2407 (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.offset_34| Int) (v_ArrVal_2404 (Array Int Int)) (v_ArrVal_2403 Int) (v_ArrVal_2409 (Array Int Int)) (v_arrayElimCell_88 Int)) (let ((.cse16 (store |c_#memory_int#2| .cse4 v_ArrVal_2404))) (or (< |v_ULTIMATE.start_main_~ptr~0#1.offset_34| 0) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store .cse16 |c_ULTIMATE.start_sll_insert_#t~ret7#1.base| v_ArrVal_2407) v_arrayElimCell_88) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|)) (not (= v_ArrVal_2407 (store (select .cse16 |c_ULTIMATE.start_sll_insert_#t~ret7#1.base|) .cse9 (select v_ArrVal_2407 .cse9)))) (< (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse4 (store .cse5 .cse6 v_ArrVal_2403)) |c_ULTIMATE.start_sll_insert_#t~ret7#1.base| v_ArrVal_2409) .cse7) .cse8) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|) (< |c_ULTIMATE.start_sll_insert_#t~ret7#1.offset| v_ArrVal_2403)))))) (.cse1 (forall ((v_ArrVal_2403 Int)) (or (forall ((|v_ULTIMATE.start_main_~ptr~0#1.offset_34| Int) (v_ArrVal_2409 (Array Int Int))) (or (forall ((v_ArrVal_2407 (Array Int Int)) (v_ArrVal_2404 (Array Int Int)) (v_arrayElimCell_89 Int) (v_arrayElimCell_88 Int)) (let ((.cse15 (store |c_#memory_int#2| .cse4 v_ArrVal_2404))) (let ((.cse14 (store .cse15 |c_ULTIMATE.start_sll_insert_#t~ret7#1.base| v_ArrVal_2407))) (or (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select .cse14 v_arrayElimCell_88) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|)) (not (= v_ArrVal_2407 (store (select .cse15 |c_ULTIMATE.start_sll_insert_#t~ret7#1.base|) .cse9 (select v_ArrVal_2407 .cse9)))) (= (select (select .cse14 v_arrayElimCell_89) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|) |c_ULTIMATE.start_main_~uneq~0#1|))))) (< |v_ULTIMATE.start_main_~ptr~0#1.offset_34| 0) (< (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse4 (store .cse5 .cse6 v_ArrVal_2403)) |c_ULTIMATE.start_sll_insert_#t~ret7#1.base| v_ArrVal_2409) .cse7) .cse8) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|))) (< |c_ULTIMATE.start_sll_insert_#t~ret7#1.offset| v_ArrVal_2403)))) (.cse11 (not .cse10))) (and (or (and .cse0 .cse1) (= .cse2 .cse3)) (or (forall ((|v_ULTIMATE.start_main_~ptr~0#1.offset_34| Int) (v_ArrVal_2404 (Array Int Int)) (v_ArrVal_2403 Int) (v_DerPreprocessor_5 Int) (v_ArrVal_2409 (Array Int Int))) (or (< |v_ULTIMATE.start_main_~ptr~0#1.offset_34| 0) (< (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse4 (store .cse5 .cse6 v_ArrVal_2403)) |c_ULTIMATE.start_sll_insert_#t~ret7#1.base| v_ArrVal_2409) .cse7) .cse8) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|) (< |c_ULTIMATE.start_sll_insert_#t~ret7#1.offset| v_ArrVal_2403) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (store (select (store |c_#memory_int#2| .cse4 v_ArrVal_2404) |c_ULTIMATE.start_sll_insert_#t~ret7#1.base|) .cse9 v_DerPreprocessor_5) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|)))) .cse10) (or (and (or .cse11 (forall ((v_ArrVal_2407 (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.offset_34| Int) (v_ArrVal_2404 (Array Int Int)) (v_ArrVal_2403 Int) (v_arrayElimCell_89 Int) (v_ArrVal_2409 (Array Int Int))) (or (not (= v_ArrVal_2407 (store (select |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_#t~ret7#1.base|) .cse9 (select v_ArrVal_2407 .cse9)))) (< |v_ULTIMATE.start_main_~ptr~0#1.offset_34| 0) (< (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse4 (store .cse5 .cse6 v_ArrVal_2403)) |c_ULTIMATE.start_sll_insert_#t~ret7#1.base| v_ArrVal_2409) .cse7) .cse8) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|) (= (select (select (store (store |c_#memory_int#2| .cse4 v_ArrVal_2404) |c_ULTIMATE.start_sll_insert_#t~ret7#1.base| v_ArrVal_2407) v_arrayElimCell_89) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|) |c_ULTIMATE.start_main_~uneq~0#1|) (< |c_ULTIMATE.start_sll_insert_#t~ret7#1.offset| v_ArrVal_2403)))) .cse0 .cse1) (= .cse7 .cse4)) (forall ((v_ArrVal_2403 Int)) (or (< |c_ULTIMATE.start_sll_insert_#t~ret7#1.offset| v_ArrVal_2403) (forall ((|v_ULTIMATE.start_main_~ptr~0#1.offset_34| Int) (v_ArrVal_2409 (Array Int Int))) (or (< |v_ULTIMATE.start_main_~ptr~0#1.offset_34| 0) (forall ((v_ArrVal_2407 (Array Int Int)) (v_ArrVal_2404 (Array Int Int)) (v_arrayElimCell_89 Int)) (let ((.cse12 (store |c_#memory_int#2| .cse4 v_ArrVal_2404))) (or (not (= v_ArrVal_2407 (store (select .cse12 |c_ULTIMATE.start_sll_insert_#t~ret7#1.base|) .cse9 (select v_ArrVal_2407 .cse9)))) (= (select (select (store .cse12 |c_ULTIMATE.start_sll_insert_#t~ret7#1.base| v_ArrVal_2407) v_arrayElimCell_89) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|) |c_ULTIMATE.start_main_~uneq~0#1|) (= |c_ULTIMATE.start_main_~uneq~0#1| (select v_ArrVal_2407 |v_ULTIMATE.start_main_~ptr~0#1.offset_34|))))) (< (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse4 (store .cse5 .cse6 v_ArrVal_2403)) |c_ULTIMATE.start_sll_insert_#t~ret7#1.base| v_ArrVal_2409) .cse7) .cse8) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|))))) (or .cse11 (forall ((v_ArrVal_2407 (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.offset_34| Int) (v_ArrVal_2404 (Array Int Int)) (v_ArrVal_2403 Int) (v_arrayElimCell_89 Int) (v_ArrVal_2409 (Array Int Int))) (let ((.cse13 (store |c_#memory_int#2| .cse4 v_ArrVal_2404))) (or (< |v_ULTIMATE.start_main_~ptr~0#1.offset_34| 0) (not (= v_ArrVal_2407 (store (select .cse13 |c_ULTIMATE.start_sll_insert_#t~ret7#1.base|) .cse9 (select v_ArrVal_2407 .cse9)))) (< (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse4 (store .cse5 .cse6 v_ArrVal_2403)) |c_ULTIMATE.start_sll_insert_#t~ret7#1.base| v_ArrVal_2409) .cse7) .cse8) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|) (= (select (select (store .cse13 |c_ULTIMATE.start_sll_insert_#t~ret7#1.base| v_ArrVal_2407) v_arrayElimCell_89) |v_ULTIMATE.start_main_~ptr~0#1.offset_34|) |c_ULTIMATE.start_main_~uneq~0#1|) (< |c_ULTIMATE.start_sll_insert_#t~ret7#1.offset| v_ArrVal_2403))))))))) is different from false [2024-11-28 03:04:31,721 INFO L349 Elim1Store]: treesize reduction 405, result has 30.9 percent of original size [2024-11-28 03:04:31,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 11 new quantified variables, introduced 56 case distinctions, treesize of input 1641 treesize of output 1736 [2024-11-28 03:04:31,922 INFO L224 Elim1Store]: Index analysis took 102 ms [2024-11-28 03:04:34,552 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:04:34,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 1390 treesize of output 1716 [2024-11-28 03:04:35,165 INFO L349 Elim1Store]: treesize reduction 12, result has 62.5 percent of original size [2024-11-28 03:04:35,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 1288 treesize of output 1299 [2024-11-28 03:04:35,355 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 1279 treesize of output 1277 [2024-11-28 03:04:35,854 INFO L349 Elim1Store]: treesize reduction 12, result has 62.5 percent of original size [2024-11-28 03:04:35,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 1277 treesize of output 1290 [2024-11-28 03:04:36,283 INFO L349 Elim1Store]: treesize reduction 12, result has 62.5 percent of original size [2024-11-28 03:04:36,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 1270 treesize of output 1283 [2024-11-28 03:04:36,756 INFO L349 Elim1Store]: treesize reduction 12, result has 62.5 percent of original size [2024-11-28 03:04:36,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 1263 treesize of output 1274 [2024-11-28 03:04:37,146 INFO L349 Elim1Store]: treesize reduction 12, result has 62.5 percent of original size [2024-11-28 03:04:37,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 1254 treesize of output 1267 [2024-11-28 03:04:37,685 INFO L349 Elim1Store]: treesize reduction 12, result has 62.5 percent of original size [2024-11-28 03:04:37,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 1247 treesize of output 1260 [2024-11-28 03:04:37,927 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 1250 treesize of output 1248 [2024-11-28 03:10:57,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-11-28 03:10:57,391 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-28 03:10:57,394 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-28 03:10:57,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 03:10:57,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:10:57,599 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:275) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:499) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:484) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:590) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:234) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:360) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:267) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:325) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:181) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 68 more [2024-11-28 03:10:57,620 INFO L158 Benchmark]: Toolchain (without parser) took 481274.74ms. Allocated memory was 117.4MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 84.1MB in the beginning and 718.0MB in the end (delta: -633.8MB). Peak memory consumption was 789.6MB. Max. memory is 16.1GB. [2024-11-28 03:10:57,620 INFO L158 Benchmark]: CDTParser took 0.61ms. Allocated memory is still 167.8MB. Free memory is still 104.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:10:57,625 INFO L158 Benchmark]: CACSL2BoogieTranslator took 431.92ms. Allocated memory is still 117.4MB. Free memory was 83.8MB in the beginning and 65.9MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 03:10:57,626 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.83ms. Allocated memory is still 117.4MB. Free memory was 65.9MB in the beginning and 63.9MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:10:57,627 INFO L158 Benchmark]: Boogie Preprocessor took 71.65ms. Allocated memory is still 117.4MB. Free memory was 63.9MB in the beginning and 61.2MB in the end (delta: 2.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:10:57,627 INFO L158 Benchmark]: RCFGBuilder took 699.16ms. Allocated memory is still 117.4MB. Free memory was 61.2MB in the beginning and 37.6MB in the end (delta: 23.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 03:10:57,628 INFO L158 Benchmark]: TraceAbstraction took 480016.86ms. Allocated memory was 117.4MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 37.0MB in the beginning and 718.0MB in the end (delta: -680.9MB). Peak memory consumption was 739.3MB. Max. memory is 16.1GB. [2024-11-28 03:10:57,638 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61ms. Allocated memory is still 167.8MB. Free memory is still 104.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 431.92ms. Allocated memory is still 117.4MB. Free memory was 83.8MB in the beginning and 65.9MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.83ms. Allocated memory is still 117.4MB. Free memory was 65.9MB in the beginning and 63.9MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 71.65ms. Allocated memory is still 117.4MB. Free memory was 63.9MB in the beginning and 61.2MB in the end (delta: 2.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 699.16ms. Allocated memory is still 117.4MB. Free memory was 61.2MB in the beginning and 37.6MB in the end (delta: 23.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 480016.86ms. Allocated memory was 117.4MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 37.0MB in the beginning and 718.0MB in the end (delta: -680.9MB). Peak memory consumption was 739.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/sll2n_insert_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB --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 383c6933c6ab916f651364224af1d774f30e162ad506fd2f28fe7f76c4487ba3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:11:00,644 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:11:00,809 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-28 03:11:00,821 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:11:00,824 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:11:00,863 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:11:00,864 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:11:00,864 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:11:00,865 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:11:00,865 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:11:00,866 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:11:00,866 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:11:00,867 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:11:00,867 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:11:00,868 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:11:00,868 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:11:00,868 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:11:00,869 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:11:00,869 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:11:00,869 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:11:00,869 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 03:11:00,869 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 03:11:00,869 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 03:11:00,869 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:11:00,869 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 03:11:00,870 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 03:11:00,870 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 03:11:00,870 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:11:00,870 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:11:00,870 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:11:00,870 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:11:00,870 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:11:00,871 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:11:00,871 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:11:00,871 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:11:00,872 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:11:00,872 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:11:00,872 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:11:00,872 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:11:00,872 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:11:00,872 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:11:00,872 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:11:00,872 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:11:00,872 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 03:11:00,872 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 03:11:00,873 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:11:00,873 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:11:00,873 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:11:00,873 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:11:00,873 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_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 383c6933c6ab916f651364224af1d774f30e162ad506fd2f28fe7f76c4487ba3 [2024-11-28 03:11:01,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:11:01,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:11:01,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:11:01,265 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:11:01,268 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:11:01,270 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/list-simple/sll2n_insert_unequal.i [2024-11-28 03:11:04,430 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/data/a3f7b7922/90a20947c5d74c99988fcad45f8eb4fa/FLAGe609fa226 [2024-11-28 03:11:04,701 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:11:04,702 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/sv-benchmarks/c/list-simple/sll2n_insert_unequal.i [2024-11-28 03:11:04,715 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/data/a3f7b7922/90a20947c5d74c99988fcad45f8eb4fa/FLAGe609fa226 [2024-11-28 03:11:04,739 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/data/a3f7b7922/90a20947c5d74c99988fcad45f8eb4fa [2024-11-28 03:11:04,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:11:04,744 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:11:04,746 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:11:04,746 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:11:04,751 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:11:04,752 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:11:04" (1/1) ... [2024-11-28 03:11:04,753 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f9e718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:04, skipping insertion in model container [2024-11-28 03:11:04,755 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:11:04" (1/1) ... [2024-11-28 03:11:04,798 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:11:05,215 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:11:05,234 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:11:05,319 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:11:05,353 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:11:05,353 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:05 WrapperNode [2024-11-28 03:11:05,353 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:11:05,354 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:11:05,355 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:11:05,355 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:11:05,362 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:05" (1/1) ... [2024-11-28 03:11:05,377 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:05" (1/1) ... [2024-11-28 03:11:05,401 INFO L138 Inliner]: procedures = 131, calls = 37, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 152 [2024-11-28 03:11:05,401 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:11:05,402 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:11:05,402 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:11:05,402 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:11:05,411 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:05" (1/1) ... [2024-11-28 03:11:05,412 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:05" (1/1) ... [2024-11-28 03:11:05,421 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:05" (1/1) ... [2024-11-28 03:11:05,452 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 5, 13]. 65 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 6 writes are split as follows [0, 1, 5]. [2024-11-28 03:11:05,452 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:05" (1/1) ... [2024-11-28 03:11:05,452 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:05" (1/1) ... [2024-11-28 03:11:05,464 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:05" (1/1) ... [2024-11-28 03:11:05,465 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:05" (1/1) ... [2024-11-28 03:11:05,468 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:05" (1/1) ... [2024-11-28 03:11:05,471 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:05" (1/1) ... [2024-11-28 03:11:05,472 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:05" (1/1) ... [2024-11-28 03:11:05,475 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:11:05,476 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:11:05,477 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:11:05,477 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:11:05,478 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:05" (1/1) ... [2024-11-28 03:11:05,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:11:05,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:11:05,516 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:11:05,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:11:05,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-28 03:11:05,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-28 03:11:05,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-28 03:11:05,550 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2024-11-28 03:11:05,550 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2024-11-28 03:11:05,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 03:11:05,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:11:05,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 03:11:05,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 03:11:05,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 03:11:05,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 03:11:05,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 03:11:05,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 03:11:05,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 03:11:05,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:11:05,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-28 03:11:05,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-28 03:11:05,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-28 03:11:05,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 03:11:05,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 03:11:05,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 03:11:05,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 03:11:05,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-28 03:11:05,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-28 03:11:05,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:11:05,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:11:05,726 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:11:05,728 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:11:06,362 INFO L? ?]: Removed 116 outVars from TransFormulas that were not future-live. [2024-11-28 03:11:06,363 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:11:06,375 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:11:06,375 INFO L312 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-28 03:11:06,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:06 BoogieIcfgContainer [2024-11-28 03:11:06,376 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:11:06,378 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:11:06,378 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:11:06,384 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:11:06,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:11:04" (1/3) ... [2024-11-28 03:11:06,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10343464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:11:06, skipping insertion in model container [2024-11-28 03:11:06,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:05" (2/3) ... [2024-11-28 03:11:06,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10343464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:11:06, skipping insertion in model container [2024-11-28 03:11:06,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:06" (3/3) ... [2024-11-28 03:11:06,387 INFO L128 eAbstractionObserver]: Analyzing ICFG sll2n_insert_unequal.i [2024-11-28 03:11:06,403 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:11:06,405 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG sll2n_insert_unequal.i that has 2 procedures, 102 locations, 1 initial locations, 5 loop locations, and 39 error locations. [2024-11-28 03:11:06,447 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:11:06,460 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;@722627d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:11:06,460 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-11-28 03:11:06,464 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 59 states have (on average 1.9491525423728813) internal successors, (115), 98 states have internal predecessors, (115), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:11:06,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 03:11:06,471 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:06,471 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:06,472 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting node_createErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:11:06,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:06,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1813350647, now seen corresponding path program 1 times [2024-11-28 03:11:06,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:11:06,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1385119296] [2024-11-28 03:11:06,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:06,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:06,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:11:06,494 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:11:06,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:11:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:06,648 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:11:06,652 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:11:06,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 03:11:06,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:11:06,755 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:11:06,756 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:11:06,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385119296] [2024-11-28 03:11:06,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385119296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:06,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:11:06,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:11:06,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251046080] [2024-11-28 03:11:06,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:06,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:11:06,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:11:06,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:11:06,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:11:06,820 INFO L87 Difference]: Start difference. First operand has 102 states, 59 states have (on average 1.9491525423728813) internal successors, (115), 98 states have internal predecessors, (115), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:07,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:07,048 INFO L93 Difference]: Finished difference Result 99 states and 109 transitions. [2024-11-28 03:11:07,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:11:07,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-28 03:11:07,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:07,060 INFO L225 Difference]: With dead ends: 99 [2024-11-28 03:11:07,060 INFO L226 Difference]: Without dead ends: 96 [2024-11-28 03:11:07,062 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:11:07,068 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 2 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:07,069 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 166 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:11:07,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-28 03:11:07,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-11-28 03:11:07,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 56 states have (on average 1.8035714285714286) internal successors, (101), 92 states have internal predecessors, (101), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:11:07,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 105 transitions. [2024-11-28 03:11:07,121 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 105 transitions. Word has length 7 [2024-11-28 03:11:07,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:07,121 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 105 transitions. [2024-11-28 03:11:07,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:07,122 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 105 transitions. [2024-11-28 03:11:07,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 03:11:07,123 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:07,123 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:07,134 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:11:07,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:07,329 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting node_createErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:11:07,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:07,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1813350648, now seen corresponding path program 1 times [2024-11-28 03:11:07,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:11:07,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1036544666] [2024-11-28 03:11:07,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:07,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:07,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:11:07,332 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:11:07,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:11:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:07,430 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:11:07,433 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:11:07,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:11:07,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:11:07,475 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:11:07,475 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:11:07,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036544666] [2024-11-28 03:11:07,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036544666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:07,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:11:07,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:11:07,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906846594] [2024-11-28 03:11:07,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:07,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:11:07,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:11:07,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:11:07,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:11:07,478 INFO L87 Difference]: Start difference. First operand 96 states and 105 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:07,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:07,702 INFO L93 Difference]: Finished difference Result 94 states and 103 transitions. [2024-11-28 03:11:07,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:11:07,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-28 03:11:07,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:07,705 INFO L225 Difference]: With dead ends: 94 [2024-11-28 03:11:07,706 INFO L226 Difference]: Without dead ends: 94 [2024-11-28 03:11:07,706 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:11:07,707 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 2 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:07,707 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 165 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:11:07,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-28 03:11:07,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-28 03:11:07,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 56 states have (on average 1.7678571428571428) internal successors, (99), 90 states have internal predecessors, (99), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:11:07,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 103 transitions. [2024-11-28 03:11:07,726 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 103 transitions. Word has length 7 [2024-11-28 03:11:07,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:07,726 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 103 transitions. [2024-11-28 03:11:07,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:07,727 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 103 transitions. [2024-11-28 03:11:07,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 03:11:07,727 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:07,727 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:07,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:11:07,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:07,928 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:11:07,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:07,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1254987041, now seen corresponding path program 1 times [2024-11-28 03:11:07,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:11:07,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [410529506] [2024-11-28 03:11:07,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:07,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:07,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:11:07,932 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:11:07,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:11:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:08,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 03:11:08,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:11:08,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:11:08,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:11:08,201 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:11:08,201 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:11:08,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410529506] [2024-11-28 03:11:08,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410529506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:08,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:11:08,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:11:08,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818595899] [2024-11-28 03:11:08,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:08,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:11:08,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:11:08,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:11:08,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:11:08,204 INFO L87 Difference]: Start difference. First operand 94 states and 103 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:11:08,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:08,693 INFO L93 Difference]: Finished difference Result 93 states and 102 transitions. [2024-11-28 03:11:08,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:11:08,696 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-11-28 03:11:08,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:08,697 INFO L225 Difference]: With dead ends: 93 [2024-11-28 03:11:08,697 INFO L226 Difference]: Without dead ends: 93 [2024-11-28 03:11:08,697 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:11:08,698 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 1 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:08,698 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 335 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:11:08,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-28 03:11:08,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-28 03:11:08,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 56 states have (on average 1.75) internal successors, (98), 89 states have internal predecessors, (98), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:11:08,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2024-11-28 03:11:08,711 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 13 [2024-11-28 03:11:08,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:08,715 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2024-11-28 03:11:08,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:11:08,715 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2024-11-28 03:11:08,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 03:11:08,716 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:08,716 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:08,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:11:08,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:08,917 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:11:08,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:08,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1254987042, now seen corresponding path program 1 times [2024-11-28 03:11:08,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:11:08,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [670251154] [2024-11-28 03:11:08,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:08,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:08,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:11:08,922 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:11:08,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:11:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:09,024 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:11:09,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:11:09,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:11:09,090 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:11:09,090 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:11:09,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670251154] [2024-11-28 03:11:09,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670251154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:09,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:11:09,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:11:09,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283006935] [2024-11-28 03:11:09,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:09,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:11:09,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:11:09,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:11:09,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:11:09,092 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:11:09,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:09,481 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2024-11-28 03:11:09,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:11:09,482 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-11-28 03:11:09,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:09,483 INFO L225 Difference]: With dead ends: 92 [2024-11-28 03:11:09,483 INFO L226 Difference]: Without dead ends: 92 [2024-11-28 03:11:09,483 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:11:09,484 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 2 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:09,484 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 319 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:11:09,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-28 03:11:09,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-11-28 03:11:09,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 56 states have (on average 1.7321428571428572) internal successors, (97), 88 states have internal predecessors, (97), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:11:09,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2024-11-28 03:11:09,490 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 13 [2024-11-28 03:11:09,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:09,491 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2024-11-28 03:11:09,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:11:09,491 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2024-11-28 03:11:09,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 03:11:09,492 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:09,492 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:09,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 03:11:09,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:09,693 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:11:09,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:09,693 INFO L85 PathProgramCache]: Analyzing trace with hash -35062270, now seen corresponding path program 1 times [2024-11-28 03:11:09,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:11:09,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1985716525] [2024-11-28 03:11:09,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:09,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:09,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:11:09,695 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:11:09,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:11:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:09,809 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:11:09,811 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:11:09,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:11:09,824 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:11:09,825 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:11:09,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985716525] [2024-11-28 03:11:09,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985716525] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:09,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:11:09,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:11:09,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252526897] [2024-11-28 03:11:09,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:09,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:11:09,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:11:09,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:11:09,826 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:11:09,827 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:11:09,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:09,843 INFO L93 Difference]: Finished difference Result 97 states and 107 transitions. [2024-11-28 03:11:09,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:11:09,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-28 03:11:09,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:09,845 INFO L225 Difference]: With dead ends: 97 [2024-11-28 03:11:09,845 INFO L226 Difference]: Without dead ends: 97 [2024-11-28 03:11:09,846 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:11:09,846 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 3 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:09,847 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 195 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:11:09,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-28 03:11:09,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2024-11-28 03:11:09,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 57 states have (on average 1.719298245614035) internal successors, (98), 89 states have internal predecessors, (98), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:11:09,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2024-11-28 03:11:09,854 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 15 [2024-11-28 03:11:09,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:09,854 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2024-11-28 03:11:09,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:11:09,854 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2024-11-28 03:11:09,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-28 03:11:09,855 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:09,855 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:09,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 03:11:10,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:10,056 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:11:10,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:10,056 INFO L85 PathProgramCache]: Analyzing trace with hash 2054263953, now seen corresponding path program 1 times [2024-11-28 03:11:10,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:11:10,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1797192881] [2024-11-28 03:11:10,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:10,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:10,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:11:10,061 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:11:10,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:11:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:10,198 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:11:10,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:11:10,243 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:11:10,243 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:11:10,349 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:11:10,349 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:11:10,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797192881] [2024-11-28 03:11:10,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797192881] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:11:10,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:11:10,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2024-11-28 03:11:10,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099030146] [2024-11-28 03:11:10,349 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:11:10,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:11:10,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:11:10,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:11:10,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:11:10,351 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 03:11:10,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:10,421 INFO L93 Difference]: Finished difference Result 108 states and 121 transitions. [2024-11-28 03:11:10,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:11:10,422 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 27 [2024-11-28 03:11:10,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:10,423 INFO L225 Difference]: With dead ends: 108 [2024-11-28 03:11:10,423 INFO L226 Difference]: Without dead ends: 108 [2024-11-28 03:11:10,423 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:11:10,424 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 8 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:10,424 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 392 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:11:10,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-28 03:11:10,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2024-11-28 03:11:10,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 69 states have (on average 1.608695652173913) internal successors, (111), 101 states have internal predecessors, (111), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 03:11:10,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 121 transitions. [2024-11-28 03:11:10,437 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 121 transitions. Word has length 27 [2024-11-28 03:11:10,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:10,437 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 121 transitions. [2024-11-28 03:11:10,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 03:11:10,437 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 121 transitions. [2024-11-28 03:11:10,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 03:11:10,438 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:10,438 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:10,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 03:11:10,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:10,639 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:11:10,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:10,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1811532960, now seen corresponding path program 2 times [2024-11-28 03:11:10,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:11:10,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1915710522] [2024-11-28 03:11:10,640 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:11:10,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:10,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:11:10,644 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:11:10,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:11:10,891 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:11:10,891 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:11:10,896 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 03:11:10,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:11:10,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 03:11:11,064 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-28 03:11:11,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-28 03:11:11,252 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| (_ BitVec 32))) (and (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))) (= (_ bv0 1) (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true [2024-11-28 03:11:11,385 INFO L349 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2024-11-28 03:11:11,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 36 [2024-11-28 03:11:11,581 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| (_ BitVec 32))) (= (store |c_old(#valid)| |node_create_~temp~0#1.base| (_ bv1 1)) |c_#valid|)) is different from true [2024-11-28 03:11:11,650 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2024-11-28 03:11:11,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 32 [2024-11-28 03:11:11,705 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 18 not checked. [2024-11-28 03:11:11,705 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:11:18,793 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:11:18,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915710522] [2024-11-28 03:11:18,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915710522] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:11:18,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1724084108] [2024-11-28 03:11:18,793 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:11:18,793 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 03:11:18,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 03:11:18,802 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 03:11:18,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-11-28 03:11:19,153 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 03:11:19,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1842973159] [2024-11-28 03:11:19,157 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:11:19,157 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 03:11:19,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 03:11:19,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 1 [2024-11-28 03:11:19,163 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 03:11:19,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-11-28 03:11:19,422 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:11:19,422 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:11:19,436 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 03:11:19,441 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:11:19,457 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 6 treesize of output 7 [2024-11-28 03:11:19,521 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 [2024-11-28 03:11:19,743 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-28 03:11:19,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-28 03:11:19,793 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 [2024-11-28 03:11:19,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:11:19,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2024-11-28 03:11:20,270 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-28 03:11:20,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-28 03:11:20,348 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 8 not checked. [2024-11-28 03:11:20,349 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:11:20,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1842973159] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:11:20,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:11:20,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2024-11-28 03:11:20,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980768400] [2024-11-28 03:11:20,736 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:11:20,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 03:11:20,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:11:20,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 03:11:20,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=353, Unknown=3, NotChecked=78, Total=506 [2024-11-28 03:11:20,738 INFO L87 Difference]: Start difference. First operand 108 states and 121 transitions. Second operand has 18 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 5 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 03:11:25,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:11:26,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:26,582 INFO L93 Difference]: Finished difference Result 120 states and 134 transitions. [2024-11-28 03:11:26,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:11:26,583 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 5 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 39 [2024-11-28 03:11:26,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:26,584 INFO L225 Difference]: With dead ends: 120 [2024-11-28 03:11:26,584 INFO L226 Difference]: Without dead ends: 120 [2024-11-28 03:11:26,584 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 91 SyntacticMatches, 10 SemanticMatches, 26 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=117, Invalid=538, Unknown=3, NotChecked=98, Total=756 [2024-11-28 03:11:26,585 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 271 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 222 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:26,585 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 515 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 516 Invalid, 0 Unknown, 222 Unchecked, 5.5s Time] [2024-11-28 03:11:26,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-28 03:11:26,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 104. [2024-11-28 03:11:26,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 69 states have (on average 1.5507246376811594) internal successors, (107), 97 states have internal predecessors, (107), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 03:11:26,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 117 transitions. [2024-11-28 03:11:26,592 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 117 transitions. Word has length 39 [2024-11-28 03:11:26,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:26,592 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 117 transitions. [2024-11-28 03:11:26,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 5 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 03:11:26,592 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 117 transitions. [2024-11-28 03:11:26,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 03:11:26,593 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:26,593 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:26,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 03:11:26,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-11-28 03:11:26,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 03:11:26,998 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:11:26,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:26,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1811532961, now seen corresponding path program 1 times [2024-11-28 03:11:26,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:11:26,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [659282750] [2024-11-28 03:11:26,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:26,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:26,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:11:27,000 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:11:27,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 03:11:27,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:27,174 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-28 03:11:27,178 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:11:27,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:11:27,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 03:11:27,479 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-28 03:11:27,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-28 03:11:27,537 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-28 03:11:27,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-28 03:11:27,818 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| (_ BitVec 32))) (and (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))) (= (_ bv0 1) (select |c_old(#valid)| |node_create_~temp~0#1.base|)) (= (store |c_old(#length)| |node_create_~temp~0#1.base| (_ bv8 32)) |c_#length|))) is different from true [2024-11-28 03:11:27,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:11:27,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2024-11-28 03:11:27,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:11:27,993 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-28 03:11:27,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 32 [2024-11-28 03:11:28,514 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true [2024-11-28 03:11:28,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:11:28,646 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2024-11-28 03:11:28,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 21 [2024-11-28 03:11:28,699 INFO L349 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2024-11-28 03:11:28,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2024-11-28 03:11:28,762 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 18 not checked. [2024-11-28 03:11:28,762 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:11:29,165 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:11:29,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659282750] [2024-11-28 03:11:29,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659282750] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:11:29,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [627620651] [2024-11-28 03:11:29,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:29,165 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 03:11:29,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 03:11:29,167 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 03:11:29,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2024-11-28 03:11:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:29,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 03:11:29,539 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:11:29,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:11:29,638 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 [2024-11-28 03:11:29,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:11:29,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 03:11:30,051 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 [2024-11-28 03:11:30,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:11:30,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 03:11:30,478 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 [2024-11-28 03:11:30,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:11:30,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 03:11:30,840 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-28 03:11:30,841 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:11:30,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [627620651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:30,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:11:30,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 20 [2024-11-28 03:11:30,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240396565] [2024-11-28 03:11:30,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:30,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 03:11:30,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:11:30,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 03:11:30,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=365, Unknown=2, NotChecked=78, Total=506 [2024-11-28 03:11:30,843 INFO L87 Difference]: Start difference. First operand 104 states and 117 transitions. Second operand has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:11:31,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:31,986 INFO L93 Difference]: Finished difference Result 105 states and 118 transitions. [2024-11-28 03:11:31,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:11:31,986 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 39 [2024-11-28 03:11:31,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:31,987 INFO L225 Difference]: With dead ends: 105 [2024-11-28 03:11:31,987 INFO L226 Difference]: Without dead ends: 105 [2024-11-28 03:11:31,988 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=69, Invalid=399, Unknown=2, NotChecked=82, Total=552 [2024-11-28 03:11:31,988 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 81 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:31,989 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 298 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 197 Invalid, 1 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 03:11:31,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-28 03:11:31,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 100. [2024-11-28 03:11:31,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 69 states have (on average 1.4927536231884058) internal successors, (103), 93 states have internal predecessors, (103), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 03:11:31,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 113 transitions. [2024-11-28 03:11:31,995 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 113 transitions. Word has length 39 [2024-11-28 03:11:31,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:31,995 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 113 transitions. [2024-11-28 03:11:31,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:11:31,996 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 113 transitions. [2024-11-28 03:11:31,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-28 03:11:31,997 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:31,997 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:32,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 03:11:32,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2024-11-28 03:11:32,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 03:11:32,401 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:11:32,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:32,402 INFO L85 PathProgramCache]: Analyzing trace with hash 184687655, now seen corresponding path program 1 times [2024-11-28 03:11:32,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:11:32,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [916719947] [2024-11-28 03:11:32,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:32,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:32,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:11:32,404 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:11:32,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 03:11:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:32,550 INFO L256 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 03:11:32,553 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:11:32,689 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 11 treesize of output 5 [2024-11-28 03:11:32,721 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| (_ BitVec 32))) (and (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))) (= (_ bv0 1) (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true [2024-11-28 03:11:32,804 INFO L349 Elim1Store]: treesize reduction 36, result has 35.7 percent of original size [2024-11-28 03:11:32,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 28 [2024-11-28 03:11:32,818 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 11 [2024-11-28 03:11:32,874 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 4 not checked. [2024-11-28 03:11:32,874 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:11:41,196 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 20 treesize of output 12 [2024-11-28 03:11:41,251 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 03:11:41,251 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:11:41,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916719947] [2024-11-28 03:11:41,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916719947] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:11:41,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:11:41,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2024-11-28 03:11:41,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023621969] [2024-11-28 03:11:41,252 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:11:41,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:11:41,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:11:41,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:11:41,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=153, Unknown=3, NotChecked=24, Total=210 [2024-11-28 03:11:41,253 INFO L87 Difference]: Start difference. First operand 100 states and 113 transitions. Second operand has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 12 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 03:11:42,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:42,870 INFO L93 Difference]: Finished difference Result 118 states and 134 transitions. [2024-11-28 03:11:42,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 03:11:42,871 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 12 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2024-11-28 03:11:42,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:42,872 INFO L225 Difference]: With dead ends: 118 [2024-11-28 03:11:42,872 INFO L226 Difference]: Without dead ends: 118 [2024-11-28 03:11:42,872 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=56, Invalid=325, Unknown=3, NotChecked=36, Total=420 [2024-11-28 03:11:42,873 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 44 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 113 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:42,873 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 584 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 543 Invalid, 0 Unknown, 113 Unchecked, 1.4s Time] [2024-11-28 03:11:42,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-28 03:11:42,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 103. [2024-11-28 03:11:42,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 72 states have (on average 1.5) internal successors, (108), 96 states have internal predecessors, (108), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 03:11:42,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 118 transitions. [2024-11-28 03:11:42,879 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 118 transitions. Word has length 43 [2024-11-28 03:11:42,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:42,880 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 118 transitions. [2024-11-28 03:11:42,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 12 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 03:11:42,880 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 118 transitions. [2024-11-28 03:11:42,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-28 03:11:42,881 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:42,881 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:42,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 03:11:43,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:43,081 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:11:43,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:43,082 INFO L85 PathProgramCache]: Analyzing trace with hash 184687656, now seen corresponding path program 1 times [2024-11-28 03:11:43,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:11:43,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [258715809] [2024-11-28 03:11:43,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:43,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:43,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:11:43,087 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:11:43,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 03:11:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:43,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 03:11:43,254 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:11:43,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 03:11:43,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:11:43,569 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 11 treesize of output 5 [2024-11-28 03:11:43,574 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 9 treesize of output 3 [2024-11-28 03:11:43,642 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_sll_insert_~head#1.base_BEFORE_CALL_9| (_ BitVec 32)) (|v_ULTIMATE.start_sll_insert_~head#1.offset_BEFORE_CALL_5| (_ BitVec 32))) (= (_ bv0 32) (select (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_sll_insert_~head#1.base_BEFORE_CALL_9|) |v_ULTIMATE.start_sll_insert_~head#1.offset_BEFORE_CALL_5|))) (exists ((|node_create_~temp~0#1.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |node_create_~temp~0#1.base|))))) is different from true [2024-11-28 03:11:43,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:11:43,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-28 03:11:43,773 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-28 03:11:43,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-28 03:11:43,866 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 17 treesize of output 9 [2024-11-28 03:11:43,981 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 6 not checked. [2024-11-28 03:11:43,981 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:11:44,594 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:11:44,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258715809] [2024-11-28 03:11:44,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258715809] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:11:44,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1118974256] [2024-11-28 03:11:44,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:44,594 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 03:11:44,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 03:11:44,599 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 03:11:44,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2024-11-28 03:11:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:44,994 INFO L256 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-28 03:11:44,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:11:45,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:11:45,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 03:11:45,686 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 11 treesize of output 5 [2024-11-28 03:11:45,692 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 9 treesize of output 3 [2024-11-28 03:11:45,818 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_sll_insert_~head#1.base_BEFORE_CALL_10| (_ BitVec 32))) (= (select (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_sll_insert_~head#1.base_BEFORE_CALL_10|) (_ bv0 32)) (_ bv0 32))) (exists ((|node_create_~temp~0#1.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |node_create_~temp~0#1.base|))))) is different from true [2024-11-28 03:11:45,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:11:45,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-28 03:11:45,961 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-28 03:11:45,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-28 03:11:46,137 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 17 treesize of output 9 [2024-11-28 03:11:46,169 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 6 not checked. [2024-11-28 03:11:46,169 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:11:46,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1118974256] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:11:46,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:11:46,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 22 [2024-11-28 03:11:46,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58919710] [2024-11-28 03:11:46,484 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:11:46,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 03:11:46,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:11:46,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 03:11:46,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=533, Unknown=2, NotChecked=94, Total=702 [2024-11-28 03:11:46,485 INFO L87 Difference]: Start difference. First operand 103 states and 118 transitions. Second operand has 23 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 03:11:49,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:49,105 INFO L93 Difference]: Finished difference Result 125 states and 139 transitions. [2024-11-28 03:11:49,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 03:11:49,107 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 43 [2024-11-28 03:11:49,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:49,108 INFO L225 Difference]: With dead ends: 125 [2024-11-28 03:11:49,108 INFO L226 Difference]: Without dead ends: 125 [2024-11-28 03:11:49,108 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=119, Invalid=879, Unknown=2, NotChecked=122, Total=1122 [2024-11-28 03:11:49,109 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 149 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 232 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:49,109 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 632 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 769 Invalid, 0 Unknown, 232 Unchecked, 2.1s Time] [2024-11-28 03:11:49,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-28 03:11:49,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 110. [2024-11-28 03:11:49,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 78 states have (on average 1.4487179487179487) internal successors, (113), 102 states have internal predecessors, (113), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 03:11:49,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 123 transitions. [2024-11-28 03:11:49,115 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 123 transitions. Word has length 43 [2024-11-28 03:11:49,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:49,116 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 123 transitions. [2024-11-28 03:11:49,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 03:11:49,116 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 123 transitions. [2024-11-28 03:11:49,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-28 03:11:49,117 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:49,117 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:49,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 03:11:49,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2024-11-28 03:11:49,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 03:11:49,522 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:11:49,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:49,522 INFO L85 PathProgramCache]: Analyzing trace with hash 184689897, now seen corresponding path program 1 times [2024-11-28 03:11:49,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:11:49,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1858344118] [2024-11-28 03:11:49,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:49,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:49,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:11:49,524 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:11:49,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 03:11:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:49,671 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:11:49,672 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:11:49,707 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 03:11:49,708 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:11:49,708 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:11:49,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858344118] [2024-11-28 03:11:49,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858344118] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:49,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:11:49,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:11:49,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044374219] [2024-11-28 03:11:49,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:49,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:11:49,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:11:49,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:11:49,709 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:11:49,709 INFO L87 Difference]: Start difference. First operand 110 states and 123 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:11:49,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:49,738 INFO L93 Difference]: Finished difference Result 111 states and 124 transitions. [2024-11-28 03:11:49,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:11:49,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2024-11-28 03:11:49,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:49,740 INFO L225 Difference]: With dead ends: 111 [2024-11-28 03:11:49,740 INFO L226 Difference]: Without dead ends: 111 [2024-11-28 03:11:49,740 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:11:49,741 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 1 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:49,741 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 174 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:11:49,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-28 03:11:49,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2024-11-28 03:11:49,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 79 states have (on average 1.4430379746835442) internal successors, (114), 103 states have internal predecessors, (114), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 03:11:49,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 124 transitions. [2024-11-28 03:11:49,746 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 124 transitions. Word has length 43 [2024-11-28 03:11:49,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:49,746 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 124 transitions. [2024-11-28 03:11:49,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:11:49,747 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 124 transitions. [2024-11-28 03:11:49,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-28 03:11:49,748 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:49,748 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:49,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 03:11:49,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:49,949 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:11:49,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:49,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1430424500, now seen corresponding path program 1 times [2024-11-28 03:11:49,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:11:49,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [509704181] [2024-11-28 03:11:49,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:49,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:49,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:11:49,951 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:11:49,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 03:11:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:50,107 INFO L256 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:11:50,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:11:50,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 03:11:50,178 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 03:11:50,178 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:11:50,178 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:11:50,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509704181] [2024-11-28 03:11:50,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509704181] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:50,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:11:50,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:11:50,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922005548] [2024-11-28 03:11:50,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:50,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:11:50,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:11:50,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:11:50,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:11:50,180 INFO L87 Difference]: Start difference. First operand 111 states and 124 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:11:50,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:50,684 INFO L93 Difference]: Finished difference Result 110 states and 123 transitions. [2024-11-28 03:11:50,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:11:50,684 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2024-11-28 03:11:50,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:50,685 INFO L225 Difference]: With dead ends: 110 [2024-11-28 03:11:50,685 INFO L226 Difference]: Without dead ends: 110 [2024-11-28 03:11:50,685 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:11:50,686 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 10 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:50,686 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 277 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:11:50,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-28 03:11:50,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-11-28 03:11:50,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 79 states have (on average 1.4303797468354431) internal successors, (113), 102 states have internal predecessors, (113), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 03:11:50,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 123 transitions. [2024-11-28 03:11:50,691 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 123 transitions. Word has length 44 [2024-11-28 03:11:50,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:50,691 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 123 transitions. [2024-11-28 03:11:50,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:11:50,692 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 123 transitions. [2024-11-28 03:11:50,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-28 03:11:50,692 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:50,693 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:50,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-28 03:11:50,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:50,893 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:11:50,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:50,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1430424501, now seen corresponding path program 1 times [2024-11-28 03:11:50,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:11:50,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [629385544] [2024-11-28 03:11:50,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:50,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:50,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:11:50,896 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:11:50,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 03:11:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:51,071 INFO L256 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 03:11:51,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:11:51,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:11:51,235 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 03:11:51,235 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:11:51,235 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:11:51,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629385544] [2024-11-28 03:11:51,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629385544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:51,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:11:51,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:11:51,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450369353] [2024-11-28 03:11:51,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:51,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:11:51,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:11:51,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:11:51,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:11:51,236 INFO L87 Difference]: Start difference. First operand 110 states and 123 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:11:51,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:51,662 INFO L93 Difference]: Finished difference Result 109 states and 122 transitions. [2024-11-28 03:11:51,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:11:51,662 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2024-11-28 03:11:51,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:51,663 INFO L225 Difference]: With dead ends: 109 [2024-11-28 03:11:51,663 INFO L226 Difference]: Without dead ends: 109 [2024-11-28 03:11:51,663 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:11:51,663 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 10 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:51,664 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 293 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:11:51,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-28 03:11:51,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-11-28 03:11:51,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 79 states have (on average 1.4177215189873418) internal successors, (112), 101 states have internal predecessors, (112), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 03:11:51,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 122 transitions. [2024-11-28 03:11:51,668 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 122 transitions. Word has length 44 [2024-11-28 03:11:51,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:51,668 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 122 transitions. [2024-11-28 03:11:51,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:11:51,669 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 122 transitions. [2024-11-28 03:11:51,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 03:11:51,669 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:51,669 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:51,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 03:11:51,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:51,870 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:11:51,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:51,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1186966880, now seen corresponding path program 1 times [2024-11-28 03:11:51,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:11:51,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1179941611] [2024-11-28 03:11:51,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:51,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:51,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:11:51,872 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:11:51,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 03:11:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:52,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:11:52,041 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:11:52,120 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 03:11:52,120 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:11:52,337 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 03:11:52,337 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:11:52,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179941611] [2024-11-28 03:11:52,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179941611] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:11:52,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:11:52,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-28 03:11:52,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673945401] [2024-11-28 03:11:52,338 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:11:52,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:11:52,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:11:52,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:11:52,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:11:52,339 INFO L87 Difference]: Start difference. First operand 109 states and 122 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 03:11:52,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:52,439 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2024-11-28 03:11:52,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:11:52,439 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 47 [2024-11-28 03:11:52,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:52,440 INFO L225 Difference]: With dead ends: 108 [2024-11-28 03:11:52,440 INFO L226 Difference]: Without dead ends: 108 [2024-11-28 03:11:52,440 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:11:52,441 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 53 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:52,441 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 372 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:11:52,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-28 03:11:52,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2024-11-28 03:11:52,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 76 states have (on average 1.381578947368421) internal successors, (105), 96 states have internal predecessors, (105), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 03:11:52,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2024-11-28 03:11:52,445 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 115 transitions. Word has length 47 [2024-11-28 03:11:52,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:52,446 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 115 transitions. [2024-11-28 03:11:52,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 03:11:52,446 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 115 transitions. [2024-11-28 03:11:52,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 03:11:52,447 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:52,447 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:52,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-28 03:11:52,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:52,647 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:11:52,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:52,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1186969122, now seen corresponding path program 1 times [2024-11-28 03:11:52,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:11:52,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2080993415] [2024-11-28 03:11:52,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:52,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:52,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:11:52,652 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:11:52,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 03:11:52,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:52,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:11:52,820 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:11:52,861 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 03:11:52,861 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:11:52,861 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:11:52,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080993415] [2024-11-28 03:11:52,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080993415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:52,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:11:52,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:11:52,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666351219] [2024-11-28 03:11:52,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:52,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:11:52,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:11:52,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:11:52,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:11:52,862 INFO L87 Difference]: Start difference. First operand 104 states and 115 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:11:53,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:53,050 INFO L93 Difference]: Finished difference Result 103 states and 114 transitions. [2024-11-28 03:11:53,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:11:53,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 47 [2024-11-28 03:11:53,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:53,051 INFO L225 Difference]: With dead ends: 103 [2024-11-28 03:11:53,051 INFO L226 Difference]: Without dead ends: 103 [2024-11-28 03:11:53,051 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:11:53,052 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:53,052 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 207 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:11:53,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-28 03:11:53,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-11-28 03:11:53,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 76 states have (on average 1.368421052631579) internal successors, (104), 95 states have internal predecessors, (104), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 03:11:53,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 114 transitions. [2024-11-28 03:11:53,056 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 114 transitions. Word has length 47 [2024-11-28 03:11:53,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:53,057 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 114 transitions. [2024-11-28 03:11:53,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:11:53,057 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 114 transitions. [2024-11-28 03:11:53,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 03:11:53,058 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:53,058 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:53,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-28 03:11:53,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:53,258 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:11:53,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:53,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1186969123, now seen corresponding path program 1 times [2024-11-28 03:11:53,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:11:53,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [875073254] [2024-11-28 03:11:53,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:53,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:53,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:11:53,263 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:11:53,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 03:11:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:53,464 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 03:11:53,465 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:11:53,881 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:11:53,881 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:11:54,010 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:11:54,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2024-11-28 03:11:54,369 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 24 treesize of output 12 [2024-11-28 03:11:54,950 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 03:11:54,951 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:11:54,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875073254] [2024-11-28 03:11:54,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875073254] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:11:54,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:11:54,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2024-11-28 03:11:54,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932184230] [2024-11-28 03:11:54,951 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:11:54,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-28 03:11:54,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:11:54,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-28 03:11:54,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2024-11-28 03:11:54,953 INFO L87 Difference]: Start difference. First operand 103 states and 114 transitions. Second operand has 25 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 23 states have internal predecessors, (62), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-28 03:11:59,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:12:04,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:12:05,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:05,170 INFO L93 Difference]: Finished difference Result 153 states and 169 transitions. [2024-11-28 03:12:05,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 03:12:05,172 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 23 states have internal predecessors, (62), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 47 [2024-11-28 03:12:05,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:05,173 INFO L225 Difference]: With dead ends: 153 [2024-11-28 03:12:05,173 INFO L226 Difference]: Without dead ends: 153 [2024-11-28 03:12:05,173 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 03:12:05,174 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 92 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:05,174 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 1041 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 378 Invalid, 2 Unknown, 0 Unchecked, 9.8s Time] [2024-11-28 03:12:05,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-28 03:12:05,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 102. [2024-11-28 03:12:05,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 76 states have (on average 1.355263157894737) internal successors, (103), 94 states have internal predecessors, (103), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 03:12:05,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 113 transitions. [2024-11-28 03:12:05,179 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 113 transitions. Word has length 47 [2024-11-28 03:12:05,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:05,179 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 113 transitions. [2024-11-28 03:12:05,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 23 states have internal predecessors, (62), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-28 03:12:05,179 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 113 transitions. [2024-11-28 03:12:05,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-28 03:12:05,180 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:05,180 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1] [2024-11-28 03:12:05,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-28 03:12:05,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:05,381 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:12:05,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:05,381 INFO L85 PathProgramCache]: Analyzing trace with hash -477058259, now seen corresponding path program 1 times [2024-11-28 03:12:05,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:12:05,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [383666905] [2024-11-28 03:12:05,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:05,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:05,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:05,384 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:12:05,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 03:12:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:05,580 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 03:12:05,582 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:12:05,710 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 11 [2024-11-28 03:12:05,755 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 03:12:05,756 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:12:05,806 INFO L349 Elim1Store]: treesize reduction 7, result has 50.0 percent of original size [2024-11-28 03:12:05,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 19 [2024-11-28 03:12:05,848 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-28 03:12:05,848 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 11 treesize of output 11 [2024-11-28 03:12:05,891 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 03:12:05,891 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:12:05,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383666905] [2024-11-28 03:12:05,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383666905] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:12:05,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:12:05,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2024-11-28 03:12:05,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520097762] [2024-11-28 03:12:05,891 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:12:05,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:12:05,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:12:05,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:12:05,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:12:05,892 INFO L87 Difference]: Start difference. First operand 102 states and 113 transitions. Second operand has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:12:06,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:06,643 INFO L93 Difference]: Finished difference Result 143 states and 160 transitions. [2024-11-28 03:12:06,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:12:06,643 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 53 [2024-11-28 03:12:06,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:06,644 INFO L225 Difference]: With dead ends: 143 [2024-11-28 03:12:06,644 INFO L226 Difference]: Without dead ends: 143 [2024-11-28 03:12:06,644 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:12:06,645 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 73 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:06,645 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 345 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:12:06,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-28 03:12:06,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 106. [2024-11-28 03:12:06,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 83 states have (on average 1.3253012048192772) internal successors, (110), 98 states have internal predecessors, (110), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 03:12:06,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 120 transitions. [2024-11-28 03:12:06,650 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 120 transitions. Word has length 53 [2024-11-28 03:12:06,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:06,650 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 120 transitions. [2024-11-28 03:12:06,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:12:06,650 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 120 transitions. [2024-11-28 03:12:06,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-28 03:12:06,651 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:06,651 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1] [2024-11-28 03:12:06,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-28 03:12:06,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:06,852 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:12:06,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:06,852 INFO L85 PathProgramCache]: Analyzing trace with hash -477058258, now seen corresponding path program 1 times [2024-11-28 03:12:06,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:12:06,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [73858952] [2024-11-28 03:12:06,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:06,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:06,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:06,854 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:12:06,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 03:12:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:07,048 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 03:12:07,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:12:07,562 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 17 treesize of output 9 [2024-11-28 03:12:07,658 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:12:07,658 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:12:08,007 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:12:08,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 44 [2024-11-28 03:12:08,359 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-28 03:12:08,359 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 11 treesize of output 11 [2024-11-28 03:12:08,517 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 24 treesize of output 12 [2024-11-28 03:12:09,143 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 03:12:09,143 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:12:09,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73858952] [2024-11-28 03:12:09,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73858952] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:12:09,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:12:09,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2024-11-28 03:12:09,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490939576] [2024-11-28 03:12:09,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:12:09,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 03:12:09,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:12:09,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 03:12:09,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2024-11-28 03:12:09,145 INFO L87 Difference]: Start difference. First operand 106 states and 120 transitions. Second operand has 27 states, 26 states have (on average 2.8461538461538463) internal successors, (74), 25 states have internal predecessors, (74), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-28 03:12:13,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:12:17,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:12:21,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:12:27,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:12:28,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:28,812 INFO L93 Difference]: Finished difference Result 158 states and 175 transitions. [2024-11-28 03:12:28,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 03:12:28,813 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.8461538461538463) internal successors, (74), 25 states have internal predecessors, (74), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 53 [2024-11-28 03:12:28,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:28,814 INFO L225 Difference]: With dead ends: 158 [2024-11-28 03:12:28,814 INFO L226 Difference]: Without dead ends: 158 [2024-11-28 03:12:28,815 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=131, Invalid=1201, Unknown=0, NotChecked=0, Total=1332 [2024-11-28 03:12:28,815 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 205 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 7 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:28,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 988 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 733 Invalid, 4 Unknown, 0 Unchecked, 18.9s Time] [2024-11-28 03:12:28,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-28 03:12:28,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 110. [2024-11-28 03:12:28,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 87 states have (on average 1.2988505747126438) internal successors, (113), 102 states have internal predecessors, (113), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 03:12:28,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 123 transitions. [2024-11-28 03:12:28,821 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 123 transitions. Word has length 53 [2024-11-28 03:12:28,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:28,821 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 123 transitions. [2024-11-28 03:12:28,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.8461538461538463) internal successors, (74), 25 states have internal predecessors, (74), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-28 03:12:28,821 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 123 transitions. [2024-11-28 03:12:28,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-28 03:12:28,822 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:28,822 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1] [2024-11-28 03:12:28,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-28 03:12:29,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:29,023 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:12:29,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:29,023 INFO L85 PathProgramCache]: Analyzing trace with hash -210390067, now seen corresponding path program 1 times [2024-11-28 03:12:29,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:12:29,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2129459529] [2024-11-28 03:12:29,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:29,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:29,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:29,026 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:12:29,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 03:12:29,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:29,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 03:12:29,231 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:12:29,461 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 [2024-11-28 03:12:29,543 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:12:29,543 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:12:29,648 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 03:12:29,649 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:12:29,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129459529] [2024-11-28 03:12:29,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129459529] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:12:29,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:12:29,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 13 [2024-11-28 03:12:29,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525327820] [2024-11-28 03:12:29,649 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:12:29,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:12:29,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:12:29,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:12:29,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:12:29,650 INFO L87 Difference]: Start difference. First operand 110 states and 123 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 03:12:33,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:12:38,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:12:39,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:39,131 INFO L93 Difference]: Finished difference Result 105 states and 117 transitions. [2024-11-28 03:12:39,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 03:12:39,132 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 53 [2024-11-28 03:12:39,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:39,133 INFO L225 Difference]: With dead ends: 105 [2024-11-28 03:12:39,133 INFO L226 Difference]: Without dead ends: 105 [2024-11-28 03:12:39,133 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2024-11-28 03:12:39,134 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 76 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:39,134 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 730 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 247 Invalid, 2 Unknown, 0 Unchecked, 9.2s Time] [2024-11-28 03:12:39,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-28 03:12:39,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-11-28 03:12:39,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 82 states have (on average 1.3048780487804879) internal successors, (107), 97 states have internal predecessors, (107), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 03:12:39,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 117 transitions. [2024-11-28 03:12:39,139 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 117 transitions. Word has length 53 [2024-11-28 03:12:39,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:39,139 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 117 transitions. [2024-11-28 03:12:39,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 03:12:39,139 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 117 transitions. [2024-11-28 03:12:39,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-28 03:12:39,140 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:39,140 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2024-11-28 03:12:39,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 03:12:39,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:39,341 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:12:39,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:39,341 INFO L85 PathProgramCache]: Analyzing trace with hash 203083802, now seen corresponding path program 1 times [2024-11-28 03:12:39,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:12:39,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1065414507] [2024-11-28 03:12:39,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:39,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:39,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:39,343 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:12:39,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 03:12:39,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:39,568 INFO L256 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 03:12:39,571 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:12:40,219 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 [2024-11-28 03:12:40,307 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:12:40,307 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:12:40,747 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 24 treesize of output 16 [2024-11-28 03:12:41,258 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 03:12:41,259 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:12:41,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065414507] [2024-11-28 03:12:41,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065414507] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:12:41,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:12:41,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 22 [2024-11-28 03:12:41,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989156358] [2024-11-28 03:12:41,259 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:12:41,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 03:12:41,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:12:41,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 03:12:41,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2024-11-28 03:12:41,261 INFO L87 Difference]: Start difference. First operand 105 states and 117 transitions. Second operand has 22 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 20 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 03:12:42,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:42,884 INFO L93 Difference]: Finished difference Result 110 states and 118 transitions. [2024-11-28 03:12:42,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 03:12:42,885 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 20 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 57 [2024-11-28 03:12:42,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:42,885 INFO L225 Difference]: With dead ends: 110 [2024-11-28 03:12:42,885 INFO L226 Difference]: Without dead ends: 110 [2024-11-28 03:12:42,886 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2024-11-28 03:12:42,886 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 163 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:42,887 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 817 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:12:42,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-28 03:12:42,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 102. [2024-11-28 03:12:42,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 79 states have (on average 1.2911392405063291) internal successors, (102), 94 states have internal predecessors, (102), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 03:12:42,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 112 transitions. [2024-11-28 03:12:42,892 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 112 transitions. Word has length 57 [2024-11-28 03:12:42,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:42,892 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 112 transitions. [2024-11-28 03:12:42,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 20 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 03:12:42,893 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 112 transitions. [2024-11-28 03:12:42,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-28 03:12:42,893 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:42,893 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2024-11-28 03:12:42,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 03:12:43,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:43,094 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:12:43,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:43,096 INFO L85 PathProgramCache]: Analyzing trace with hash -221974992, now seen corresponding path program 1 times [2024-11-28 03:12:43,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:12:43,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [848884133] [2024-11-28 03:12:43,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:43,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:43,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:43,098 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:12:43,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 03:12:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:43,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:12:43,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:12:43,514 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 03:12:43,514 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:12:43,907 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 03:12:43,907 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:12:43,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848884133] [2024-11-28 03:12:43,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848884133] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:12:43,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:12:43,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2024-11-28 03:12:43,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81526794] [2024-11-28 03:12:43,908 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:12:43,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:12:43,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:12:43,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:12:43,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:12:43,909 INFO L87 Difference]: Start difference. First operand 102 states and 112 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 03:12:44,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:44,119 INFO L93 Difference]: Finished difference Result 104 states and 111 transitions. [2024-11-28 03:12:44,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:12:44,122 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 58 [2024-11-28 03:12:44,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:44,123 INFO L225 Difference]: With dead ends: 104 [2024-11-28 03:12:44,123 INFO L226 Difference]: Without dead ends: 104 [2024-11-28 03:12:44,123 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:12:44,124 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 107 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:44,124 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 461 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:12:44,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-28 03:12:44,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 96. [2024-11-28 03:12:44,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 76 states have (on average 1.25) internal successors, (95), 88 states have internal predecessors, (95), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 03:12:44,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 105 transitions. [2024-11-28 03:12:44,132 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 105 transitions. Word has length 58 [2024-11-28 03:12:44,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:44,133 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 105 transitions. [2024-11-28 03:12:44,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 03:12:44,133 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 105 transitions. [2024-11-28 03:12:44,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-28 03:12:44,134 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:44,134 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:12:44,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-28 03:12:44,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:44,335 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:12:44,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:44,335 INFO L85 PathProgramCache]: Analyzing trace with hash -221974915, now seen corresponding path program 1 times [2024-11-28 03:12:44,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:12:44,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1263955643] [2024-11-28 03:12:44,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:44,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:44,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:44,337 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:12:44,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 03:12:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:44,570 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-28 03:12:44,573 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:12:44,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 03:12:44,839 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 11 treesize of output 5 [2024-11-28 03:12:45,170 INFO L349 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2024-11-28 03:12:45,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 35 [2024-11-28 03:12:46,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 03:12:46,299 INFO L349 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2024-11-28 03:12:46,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 43 [2024-11-28 03:12:46,460 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 50 treesize of output 30 [2024-11-28 03:12:46,727 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 27 treesize of output 15 [2024-11-28 03:12:47,116 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:12:47,116 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:12:48,002 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:12:48,002 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2024-11-28 03:12:48,036 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:12:48,037 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 64 treesize of output 63 [2024-11-28 03:12:48,082 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 7 [2024-11-28 03:12:56,911 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:12:56,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263955643] [2024-11-28 03:12:56,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263955643] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:12:56,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1491072870] [2024-11-28 03:12:56,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:56,911 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 03:12:56,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 03:12:56,913 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 03:12:56,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2024-11-28 03:12:57,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:57,499 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-28 03:12:57,503 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:12:57,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 03:12:58,423 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 11 treesize of output 5 [2024-11-28 03:13:07,032 INFO L349 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2024-11-28 03:13:07,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 35 [2024-11-28 03:13:08,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 03:13:08,936 INFO L349 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2024-11-28 03:13:08,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 43 [2024-11-28 03:13:09,230 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 50 treesize of output 30 [2024-11-28 03:13:09,293 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 27 treesize of output 15 [2024-11-28 03:13:09,466 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:13:09,466 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:13:09,682 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:13:09,683 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2024-11-28 03:13:09,706 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:13:09,707 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 64 treesize of output 63 [2024-11-28 03:13:09,716 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 7 [2024-11-28 03:13:16,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1491072870] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:13:16,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:13:16,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 39 [2024-11-28 03:13:16,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654479253] [2024-11-28 03:13:16,579 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:13:16,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-28 03:13:16,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:13:16,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-28 03:13:16,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=2574, Unknown=14, NotChecked=0, Total=2756 [2024-11-28 03:13:16,581 INFO L87 Difference]: Start difference. First operand 96 states and 105 transitions. Second operand has 40 states, 37 states have (on average 2.189189189189189) internal successors, (81), 34 states have internal predecessors, (81), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 03:13:23,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:13:23,344 INFO L93 Difference]: Finished difference Result 103 states and 110 transitions. [2024-11-28 03:13:23,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 03:13:23,345 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 37 states have (on average 2.189189189189189) internal successors, (81), 34 states have internal predecessors, (81), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 58 [2024-11-28 03:13:23,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:13:23,346 INFO L225 Difference]: With dead ends: 103 [2024-11-28 03:13:23,346 INFO L226 Difference]: Without dead ends: 103 [2024-11-28 03:13:23,347 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 103 SyntacticMatches, 4 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 949 ImplicationChecksByTransitivity, 29.9s TimeCoverageRelationStatistics Valid=320, Invalid=4088, Unknown=14, NotChecked=0, Total=4422 [2024-11-28 03:13:23,352 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 140 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 1337 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1337 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:13:23,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 953 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1337 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-11-28 03:13:23,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-28 03:13:23,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 95. [2024-11-28 03:13:23,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 76 states have (on average 1.236842105263158) internal successors, (94), 87 states have internal predecessors, (94), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 03:13:23,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 104 transitions. [2024-11-28 03:13:23,357 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 104 transitions. Word has length 58 [2024-11-28 03:13:23,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:13:23,357 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 104 transitions. [2024-11-28 03:13:23,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 37 states have (on average 2.189189189189189) internal successors, (81), 34 states have internal predecessors, (81), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 03:13:23,357 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 104 transitions. [2024-11-28 03:13:23,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-28 03:13:23,358 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:13:23,359 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:13:23,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (28)] Ended with exit code 0 [2024-11-28 03:13:23,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-28 03:13:23,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:13:23,759 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:13:23,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:13:23,760 INFO L85 PathProgramCache]: Analyzing trace with hash -221974914, now seen corresponding path program 1 times [2024-11-28 03:13:23,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:13:23,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2091925150] [2024-11-28 03:13:23,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:13:23,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:13:23,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:13:23,762 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:13:23,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 03:13:23,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:13:23,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-28 03:13:23,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:13:24,283 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 11 treesize of output 5 [2024-11-28 03:13:24,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:13:24,631 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-28 03:13:24,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-28 03:13:25,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 03:13:25,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 03:13:25,715 INFO L349 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2024-11-28 03:13:25,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2024-11-28 03:13:25,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 15 [2024-11-28 03:13:25,897 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 48 treesize of output 28 [2024-11-28 03:13:26,130 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 25 treesize of output 13 [2024-11-28 03:13:26,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 03:13:26,415 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:13:26,415 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:13:27,602 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse2 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) (and (forall ((v_ArrVal_1500 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1500) .cse1) .cse2))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_ArrVal_1500 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1501 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1500) .cse1) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1501) .cse1) .cse2)))))) is different from false [2024-11-28 03:13:27,623 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:13:27,623 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 62 [2024-11-28 03:13:27,636 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:13:27,637 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 52 [2024-11-28 03:13:27,670 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:13:27,670 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 98 treesize of output 97 [2024-11-28 03:13:27,713 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:13:27,713 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 152 treesize of output 137 [2024-11-28 03:13:27,861 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 23 treesize of output 15 [2024-11-28 03:13:27,866 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 7 [2024-11-28 03:13:27,893 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:13:27,894 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 50 [2024-11-28 03:13:27,927 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:13:27,927 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 82 treesize of output 67 [2024-11-28 03:13:27,937 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 5 [2024-11-28 03:13:29,824 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:13:29,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091925150] [2024-11-28 03:13:29,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091925150] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:13:29,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1689526969] [2024-11-28 03:13:29,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:13:29,824 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 03:13:29,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 03:13:29,826 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 03:13:29,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2024-11-28 03:13:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:13:30,471 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-28 03:13:30,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:13:30,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 03:13:31,606 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 11 treesize of output 5 [2024-11-28 03:13:31,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:13:32,301 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-28 03:13:32,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-28 03:13:33,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 03:13:34,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 03:13:34,306 INFO L349 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2024-11-28 03:13:34,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2024-11-28 03:13:34,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 15 [2024-11-28 03:13:34,639 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 48 treesize of output 28 [2024-11-28 03:13:34,702 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 25 treesize of output 13 [2024-11-28 03:13:34,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 03:13:34,738 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:13:34,738 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:13:34,875 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse1 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) (and (forall ((v_ArrVal_1575 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1576 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1576) .cse0) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1575) .cse0) .cse1)))) (forall ((v_ArrVal_1576 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1576) .cse0) .cse1))) (bvule .cse2 (bvadd (_ bv4 32) .cse2)))))) is different from false [2024-11-28 03:13:34,893 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:13:34,893 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 50 [2024-11-28 03:13:34,919 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:13:34,919 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 82 treesize of output 67 [2024-11-28 03:13:34,924 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 5 [2024-11-28 03:13:34,987 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:13:34,987 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 62 [2024-11-28 03:13:35,012 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:13:35,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 52 [2024-11-28 03:13:35,018 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 03:13:35,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:13:35,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 29 [2024-11-28 03:13:35,031 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 03:13:35,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:13:35,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 12 [2024-11-28 03:13:35,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1689526969] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:13:35,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:13:35,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 40 [2024-11-28 03:13:35,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114418608] [2024-11-28 03:13:35,640 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:13:35,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-28 03:13:35,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:13:35,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-28 03:13:35,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=2601, Unknown=2, NotChecked=206, Total=2970 [2024-11-28 03:13:35,641 INFO L87 Difference]: Start difference. First operand 95 states and 104 transitions. Second operand has 41 states, 38 states have (on average 2.210526315789474) internal successors, (84), 35 states have internal predecessors, (84), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 03:13:41,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:13:41,861 INFO L93 Difference]: Finished difference Result 101 states and 108 transitions. [2024-11-28 03:13:41,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 03:13:41,862 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 38 states have (on average 2.210526315789474) internal successors, (84), 35 states have internal predecessors, (84), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 58 [2024-11-28 03:13:41,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:13:41,863 INFO L225 Difference]: With dead ends: 101 [2024-11-28 03:13:41,863 INFO L226 Difference]: Without dead ends: 101 [2024-11-28 03:13:41,865 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=294, Invalid=4134, Unknown=2, NotChecked=262, Total=4692 [2024-11-28 03:13:41,865 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 78 mSDsluCounter, 1053 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 1302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:13:41,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 1103 Invalid, 1302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1299 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-28 03:13:41,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-28 03:13:41,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 93. [2024-11-28 03:13:41,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 76 states have (on average 1.2105263157894737) internal successors, (92), 85 states have internal predecessors, (92), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 03:13:41,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2024-11-28 03:13:41,870 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 58 [2024-11-28 03:13:41,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:13:41,870 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2024-11-28 03:13:41,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 38 states have (on average 2.210526315789474) internal successors, (84), 35 states have internal predecessors, (84), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 03:13:41,871 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2024-11-28 03:13:41,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-28 03:13:41,871 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:13:41,872 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:13:41,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (30)] Ended with exit code 0 [2024-11-28 03:13:42,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-28 03:13:42,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:13:42,272 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:13:42,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:13:42,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1708737721, now seen corresponding path program 1 times [2024-11-28 03:13:42,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:13:42,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1945428569] [2024-11-28 03:13:42,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:13:42,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:13:42,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:13:42,275 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:13:42,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-28 03:13:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:13:42,529 INFO L256 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-28 03:13:42,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:13:42,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 03:13:42,660 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 [2024-11-28 03:13:42,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 03:13:43,164 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 11 treesize of output 5 [2024-11-28 03:13:43,621 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-28 03:13:43,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2024-11-28 03:13:43,630 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 [2024-11-28 03:13:43,681 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-28 03:13:43,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-28 03:13:44,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 15 [2024-11-28 03:13:44,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-28 03:13:44,989 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 11 [2024-11-28 03:13:45,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 03:13:45,325 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:13:45,325 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:13:45,695 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1653 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1653) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) is different from false [2024-11-28 03:13:47,567 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:13:47,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945428569] [2024-11-28 03:13:47,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945428569] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:13:47,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [546688477] [2024-11-28 03:13:47,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:13:47,567 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 03:13:47,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 03:13:47,570 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 03:13:47,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2024-11-28 03:13:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:13:48,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-28 03:13:48,117 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:13:48,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 03:13:48,368 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 [2024-11-28 03:13:48,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 03:13:49,431 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 11 treesize of output 5 [2024-11-28 03:13:49,437 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 11 treesize of output 3 [2024-11-28 03:13:49,615 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-28 03:13:49,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2024-11-28 03:13:49,649 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-28 03:13:49,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-28 03:13:51,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 15 [2024-11-28 03:13:51,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-28 03:13:51,651 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 11 [2024-11-28 03:13:52,190 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:13:52,190 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:13:52,243 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1733 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1733) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) |c_ULTIMATE.start_main_~data~0#1|)) is different from false [2024-11-28 03:13:59,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [546688477] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:13:59,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:13:59,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 41 [2024-11-28 03:13:59,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95222807] [2024-11-28 03:13:59,421 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:13:59,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-28 03:13:59,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:13:59,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-28 03:13:59,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2727, Unknown=153, NotChecked=218, Total=3306 [2024-11-28 03:13:59,424 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand has 41 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 36 states have internal predecessors, (82), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 03:14:05,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:14:05,006 INFO L93 Difference]: Finished difference Result 97 states and 104 transitions. [2024-11-28 03:14:05,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 03:14:05,007 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 36 states have internal predecessors, (82), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 59 [2024-11-28 03:14:05,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:14:05,008 INFO L225 Difference]: With dead ends: 97 [2024-11-28 03:14:05,008 INFO L226 Difference]: Without dead ends: 97 [2024-11-28 03:14:05,009 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=358, Invalid=4609, Unknown=153, NotChecked=282, Total=5402 [2024-11-28 03:14:05,010 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 82 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:14:05,010 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 939 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1013 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2024-11-28 03:14:05,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-28 03:14:05,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2024-11-28 03:14:05,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 76 states have (on average 1.1973684210526316) internal successors, (91), 85 states have internal predecessors, (91), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 03:14:05,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 101 transitions. [2024-11-28 03:14:05,015 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 101 transitions. Word has length 59 [2024-11-28 03:14:05,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:14:05,015 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 101 transitions. [2024-11-28 03:14:05,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 36 states have internal predecessors, (82), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 03:14:05,016 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 101 transitions. [2024-11-28 03:14:05,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 03:14:05,016 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:14:05,017 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:14:05,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-28 03:14:05,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2024-11-28 03:14:05,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 03:14:05,417 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 03:14:05,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:14:05,418 INFO L85 PathProgramCache]: Analyzing trace with hash 295688605, now seen corresponding path program 1 times [2024-11-28 03:14:05,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:14:05,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1915711383] [2024-11-28 03:14:05,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:14:05,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:14:05,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:14:05,420 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:14:05,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d946b183-6eb4-450b-b2fe-e7a4bd43d17c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-28 03:14:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:14:05,669 INFO L256 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-28 03:14:05,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:14:05,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 03:14:06,145 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 11 treesize of output 5 [2024-11-28 03:14:06,294 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 [2024-11-28 03:14:06,509 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-28 03:14:06,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-28 03:14:07,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 03:14:07,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-28 03:14:07,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 03:14:07,950 INFO L349 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2024-11-28 03:14:07,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 76 [2024-11-28 03:14:07,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 15 [2024-11-28 03:14:07,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 19 [2024-11-28 03:14:08,134 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 50 treesize of output 30 [2024-11-28 03:14:08,362 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 27 treesize of output 15 [2024-11-28 03:14:08,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 03:14:08,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 03:14:08,735 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:14:08,735 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:14:09,480 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1812 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1813 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1811 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (let ((.cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset|))) (store (select |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse0 (select v_ArrVal_1812 .cse0))) v_ArrVal_1812)) (= (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse2 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) (select (select (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1812) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1811) .cse1) .cse2)) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1813) .cse1) .cse2))) |c_ULTIMATE.start_main_~uneq~0#1|))) is different from false [2024-11-28 03:14:09,503 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:14:09,503 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 68 [2024-11-28 03:14:09,545 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:14:09,545 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 130 treesize of output 129 [2024-11-28 03:14:09,565 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:14:09,566 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 96 [2024-11-28 03:14:09,626 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:14:09,626 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 176 treesize of output 161 [2024-11-28 03:14:09,643 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 37 treesize of output 29 [2024-11-28 03:14:09,656 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 29 treesize of output 21 [2024-11-28 03:14:10,867 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse20 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse0 (= .cse20 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|)) (.cse8 (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset|))) (let ((.cse13 (forall ((v_arrayElimCell_148 (_ BitVec 32)) (v_arrayElimCell_149 (_ BitVec 32)) (v_ArrVal_1812 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (store (select |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse8 (select v_ArrVal_1812 .cse8)) v_ArrVal_1812)) (= (select (select (store (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.base| v_ArrVal_1810) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1812) v_arrayElimCell_148) v_arrayElimCell_149) |c_ULTIMATE.start_main_~uneq~0#1|)))) (.cse12 (not .cse0))) (let ((.cse2 (or .cse13 .cse12)) (.cse10 (forall ((v_arrayElimCell_146 (_ BitVec 32)) (v_arrayElimCell_148 (_ BitVec 32)) (v_arrayElimCell_149 (_ BitVec 32)) (v_ArrVal_1812 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse21 (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.base| v_ArrVal_1810))) (or (= |c_ULTIMATE.start_main_~uneq~0#1| (select v_ArrVal_1812 v_arrayElimCell_146)) (= (select (select (store .cse21 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1812) v_arrayElimCell_148) v_arrayElimCell_149) |c_ULTIMATE.start_main_~uneq~0#1|) (not (= (store (select .cse21 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse8 (select v_ArrVal_1812 .cse8)) v_ArrVal_1812)))))) (.cse1 (= |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.base| .cse20)) (.cse3 (or .cse0 (forall ((v_arrayElimCell_146 (_ BitVec 32)) (v_ArrVal_1812 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_144 (_ BitVec 32))) (let ((.cse19 (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.base| v_ArrVal_1810))) (or (not (= (store (select .cse19 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse8 (select v_ArrVal_1812 .cse8)) v_ArrVal_1812)) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store .cse19 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1812) v_arrayElimCell_144) v_arrayElimCell_146))))))) (.cse4 (or (forall ((v_ArrVal_1812 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_144 (_ BitVec 32))) (let ((.cse18 (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.base| v_ArrVal_1810))) (or (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store .cse18 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1812) v_arrayElimCell_144) |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset|)) (not (= (store (select .cse18 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse8 (select v_ArrVal_1812 .cse8)) v_ArrVal_1812))))) .cse0)) (.cse5 (forall ((v_arrayElimCell_148 (_ BitVec 32)) (v_arrayElimCell_149 (_ BitVec 32)) (v_ArrVal_1812 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_144 (_ BitVec 32)) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse17 (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.base| v_ArrVal_1810))) (let ((.cse16 (store .cse17 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1812))) (or (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select .cse16 v_arrayElimCell_144) |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset|)) (= (select (select .cse16 v_arrayElimCell_148) v_arrayElimCell_149) |c_ULTIMATE.start_main_~uneq~0#1|) (not (= (store (select .cse17 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse8 (select v_ArrVal_1812 .cse8)) v_ArrVal_1812))))))) (.cse6 (forall ((v_arrayElimCell_146 (_ BitVec 32)) (v_arrayElimCell_148 (_ BitVec 32)) (v_arrayElimCell_149 (_ BitVec 32)) (v_ArrVal_1812 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_144 (_ BitVec 32)) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse15 (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.base| v_ArrVal_1810))) (let ((.cse14 (store .cse15 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1812))) (or (= (select (select .cse14 v_arrayElimCell_148) v_arrayElimCell_149) |c_ULTIMATE.start_main_~uneq~0#1|) (not (= (store (select .cse15 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse8 (select v_ArrVal_1812 .cse8)) v_ArrVal_1812)) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select .cse14 v_arrayElimCell_144) v_arrayElimCell_146))))))) (.cse9 (= (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.offset|))) (and (or .cse0 (forall ((v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.base| v_ArrVal_1810) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset|)))) (or .cse1 (and .cse2 .cse3 .cse4 .cse5 .cse6)) (forall ((v_arrayElimCell_148 (_ BitVec 32)) (v_arrayElimCell_149 (_ BitVec 32)) (v_ArrVal_1812 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.base| v_ArrVal_1810))) (or (= (select (select (store .cse7 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1812) v_arrayElimCell_148) v_arrayElimCell_149) |c_ULTIMATE.start_main_~uneq~0#1|) (= (select v_ArrVal_1812 |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset|) |c_ULTIMATE.start_main_~uneq~0#1|) (not (= (store (select .cse7 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse8 (select v_ArrVal_1812 .cse8)) v_ArrVal_1812))))) (or .cse9 (and .cse10 (or .cse0 (forall ((v_arrayElimCell_146 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (store (select (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.base| v_ArrVal_1810) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse8 v_DerPreprocessor_5) v_arrayElimCell_146)))))) (or (forall ((v_arrayElimCell_148 (_ BitVec 32)) (v_arrayElimCell_149 (_ BitVec 32)) (v_ArrVal_1812 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.base| v_ArrVal_1810))) (or (= (select (select (store .cse11 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1812) v_arrayElimCell_148) v_arrayElimCell_149) |c_ULTIMATE.start_main_~uneq~0#1|) (not (= (store (select .cse11 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse8 (select v_ArrVal_1812 .cse8)) v_ArrVal_1812))))) .cse12) (or .cse1 (and .cse2 .cse10 (or .cse0 (forall ((v_arrayElimCell_146 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (store (select (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.base| v_ArrVal_1810) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse8 v_DerPreprocessor_4) v_arrayElimCell_146)))))) (or (and (or .cse1 .cse13 .cse12) .cse3 .cse4 .cse5 .cse6) .cse9)))))) is different from false [2024-11-28 03:14:41,019 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse15 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse9 (= .cse15 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|)) (.cse7 (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset|))) (let ((.cse13 (forall ((v_arrayElimCell_148 (_ BitVec 32)) (v_arrayElimCell_149 (_ BitVec 32)) (v_ArrVal_1812 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (store (select |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse7 (select v_ArrVal_1812 .cse7)) v_ArrVal_1812)) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_#t~mem8#1.base| v_ArrVal_1810) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1812) v_arrayElimCell_148) v_arrayElimCell_149))))) (.cse8 (not .cse9))) (let ((.cse3 (or .cse13 .cse8)) (.cse11 (forall ((v_arrayElimCell_146 (_ BitVec 32)) (v_arrayElimCell_148 (_ BitVec 32)) (v_arrayElimCell_149 (_ BitVec 32)) (v_ArrVal_1812 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse21 (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_#t~mem8#1.base| v_ArrVal_1810))) (or (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store .cse21 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1812) v_arrayElimCell_148) v_arrayElimCell_149)) (= |c_ULTIMATE.start_main_~uneq~0#1| (select v_ArrVal_1812 v_arrayElimCell_146)) (not (= v_ArrVal_1812 (store (select .cse21 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse7 (select v_ArrVal_1812 .cse7)))))))) (.cse1 (forall ((v_arrayElimCell_148 (_ BitVec 32)) (v_arrayElimCell_149 (_ BitVec 32)) (v_ArrVal_1812 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_144 (_ BitVec 32)) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse20 (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_#t~mem8#1.base| v_ArrVal_1810))) (let ((.cse19 (store .cse20 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1812))) (or (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select .cse19 v_arrayElimCell_148) v_arrayElimCell_149)) (not (= v_ArrVal_1812 (store (select .cse20 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse7 (select v_ArrVal_1812 .cse7)))) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select .cse19 v_arrayElimCell_144) |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset|))))))) (.cse2 (forall ((v_arrayElimCell_146 (_ BitVec 32)) (v_arrayElimCell_148 (_ BitVec 32)) (v_arrayElimCell_149 (_ BitVec 32)) (v_ArrVal_1812 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_144 (_ BitVec 32)) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse18 (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_#t~mem8#1.base| v_ArrVal_1810))) (let ((.cse17 (store .cse18 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1812))) (or (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select .cse17 v_arrayElimCell_148) v_arrayElimCell_149)) (not (= v_ArrVal_1812 (store (select .cse18 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse7 (select v_ArrVal_1812 .cse7)))) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select .cse17 v_arrayElimCell_144) v_arrayElimCell_146))))))) (.cse4 (or .cse9 (forall ((v_ArrVal_1812 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_144 (_ BitVec 32))) (let ((.cse16 (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_#t~mem8#1.base| v_ArrVal_1810))) (or (not (= v_ArrVal_1812 (store (select .cse16 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse7 (select v_ArrVal_1812 .cse7)))) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store .cse16 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1812) v_arrayElimCell_144) |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset|))))))) (.cse0 (= .cse15 |c_ULTIMATE.start_sll_insert_#t~mem8#1.base|)) (.cse5 (or (forall ((v_arrayElimCell_146 (_ BitVec 32)) (v_ArrVal_1812 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_144 (_ BitVec 32))) (let ((.cse14 (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_#t~mem8#1.base| v_ArrVal_1810))) (or (not (= v_ArrVal_1812 (store (select .cse14 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse7 (select v_ArrVal_1812 .cse7)))) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store .cse14 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1812) v_arrayElimCell_144) v_arrayElimCell_146))))) .cse9)) (.cse10 (= |c_ULTIMATE.start_sll_insert_#t~mem8#1.offset| (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) (and (or .cse0 (and .cse1 .cse2 .cse3 .cse4 .cse5)) (or (forall ((v_arrayElimCell_148 (_ BitVec 32)) (v_arrayElimCell_149 (_ BitVec 32)) (v_ArrVal_1812 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_#t~mem8#1.base| v_ArrVal_1810))) (or (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store .cse6 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1812) v_arrayElimCell_148) v_arrayElimCell_149)) (not (= v_ArrVal_1812 (store (select .cse6 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse7 (select v_ArrVal_1812 .cse7))))))) .cse8) (or (forall ((v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_#t~mem8#1.base| v_ArrVal_1810) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset|))) .cse9) (or .cse10 (and .cse11 (or .cse9 (forall ((v_arrayElimCell_146 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (store (select (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_#t~mem8#1.base| v_ArrVal_1810) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse7 v_DerPreprocessor_5) v_arrayElimCell_146)))))) (or .cse0 (and (or (forall ((v_arrayElimCell_146 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (store (select (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_#t~mem8#1.base| v_ArrVal_1810) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse7 v_DerPreprocessor_4) v_arrayElimCell_146) |c_ULTIMATE.start_main_~uneq~0#1|)) .cse9) .cse3 .cse11)) (forall ((v_arrayElimCell_148 (_ BitVec 32)) (v_arrayElimCell_149 (_ BitVec 32)) (v_ArrVal_1812 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse12 (store |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_#t~mem8#1.base| v_ArrVal_1810))) (or (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store .cse12 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1812) v_arrayElimCell_148) v_arrayElimCell_149)) (not (= v_ArrVal_1812 (store (select .cse12 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse7 (select v_ArrVal_1812 .cse7)))) (= (select v_ArrVal_1812 |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset|) |c_ULTIMATE.start_main_~uneq~0#1|)))) (or (and .cse1 .cse2 .cse4 (or .cse0 .cse13 .cse8) .cse5) .cse10)))))) is different from false [2024-11-28 03:14:43,155 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse15 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse8 (= .cse15 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|)) (.cse10 (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset|)) (.cse9 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_insert_~head#1.base|) |c_ULTIMATE.start_sll_insert_~head#1.offset|))) (let ((.cse14 (forall ((v_arrayElimCell_148 (_ BitVec 32)) (v_arrayElimCell_149 (_ BitVec 32)) (v_ArrVal_1812 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (store (select |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse10 (select v_ArrVal_1812 .cse10)) v_ArrVal_1812)) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store (store |c_#memory_int#2| .cse9 v_ArrVal_1810) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1812) v_arrayElimCell_148) v_arrayElimCell_149))))) (.cse13 (not .cse8))) (let ((.cse0 (or .cse14 .cse13)) (.cse7 (forall ((v_arrayElimCell_146 (_ BitVec 32)) (v_arrayElimCell_148 (_ BitVec 32)) (v_arrayElimCell_149 (_ BitVec 32)) (v_ArrVal_1812 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse22 (store |c_#memory_int#2| .cse9 v_ArrVal_1810))) (or (= |c_ULTIMATE.start_main_~uneq~0#1| (select v_ArrVal_1812 v_arrayElimCell_146)) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store .cse22 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1812) v_arrayElimCell_148) v_arrayElimCell_149)) (not (= (store (select .cse22 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse10 (select v_ArrVal_1812 .cse10)) v_ArrVal_1812)))))) (.cse6 (= (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_insert_~head#1.base|) |c_ULTIMATE.start_sll_insert_~head#1.offset|) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (.cse1 (or .cse8 (forall ((v_arrayElimCell_146 (_ BitVec 32)) (v_ArrVal_1812 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_144 (_ BitVec 32))) (let ((.cse21 (store |c_#memory_int#2| .cse9 v_ArrVal_1810))) (or (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store .cse21 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1812) v_arrayElimCell_144) v_arrayElimCell_146)) (not (= (store (select .cse21 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse10 (select v_ArrVal_1812 .cse10)) v_ArrVal_1812))))))) (.cse2 (forall ((v_arrayElimCell_148 (_ BitVec 32)) (v_arrayElimCell_149 (_ BitVec 32)) (v_ArrVal_1812 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_144 (_ BitVec 32)) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse20 (store |c_#memory_int#2| .cse9 v_ArrVal_1810))) (let ((.cse19 (store .cse20 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1812))) (or (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select .cse19 v_arrayElimCell_148) v_arrayElimCell_149)) (= (select (select .cse19 v_arrayElimCell_144) |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset|) |c_ULTIMATE.start_main_~uneq~0#1|) (not (= (store (select .cse20 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse10 (select v_ArrVal_1812 .cse10)) v_ArrVal_1812))))))) (.cse3 (or .cse8 (forall ((v_ArrVal_1812 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_144 (_ BitVec 32))) (let ((.cse18 (store |c_#memory_int#2| .cse9 v_ArrVal_1810))) (or (= (select (select (store .cse18 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1812) v_arrayElimCell_144) |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset|) |c_ULTIMATE.start_main_~uneq~0#1|) (not (= (store (select .cse18 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse10 (select v_ArrVal_1812 .cse10)) v_ArrVal_1812))))))) (.cse4 (forall ((v_arrayElimCell_146 (_ BitVec 32)) (v_arrayElimCell_148 (_ BitVec 32)) (v_arrayElimCell_149 (_ BitVec 32)) (v_ArrVal_1812 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_144 (_ BitVec 32)) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse17 (store |c_#memory_int#2| .cse9 v_ArrVal_1810))) (let ((.cse16 (store .cse17 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1812))) (or (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select .cse16 v_arrayElimCell_144) v_arrayElimCell_146)) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select .cse16 v_arrayElimCell_148) v_arrayElimCell_149)) (not (= (store (select .cse17 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse10 (select v_ArrVal_1812 .cse10)) v_ArrVal_1812))))))) (.cse5 (= .cse9 .cse15))) (and (or (and .cse0 .cse1 .cse2 .cse3 .cse4) .cse5) (or .cse6 (and .cse7 (or .cse8 (forall ((v_arrayElimCell_146 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (store (select (store |c_#memory_int#2| .cse9 v_ArrVal_1810) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse10 v_DerPreprocessor_5) v_arrayElimCell_146)))))) (forall ((v_arrayElimCell_148 (_ BitVec 32)) (v_arrayElimCell_149 (_ BitVec 32)) (v_ArrVal_1812 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (store |c_#memory_int#2| .cse9 v_ArrVal_1810))) (or (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store .cse11 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1812) v_arrayElimCell_148) v_arrayElimCell_149)) (= (select v_ArrVal_1812 |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset|) |c_ULTIMATE.start_main_~uneq~0#1|) (not (= (store (select .cse11 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse10 (select v_ArrVal_1812 .cse10)) v_ArrVal_1812))))) (or .cse5 (and .cse0 (or .cse8 (forall ((v_arrayElimCell_146 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (store (select (store |c_#memory_int#2| .cse9 v_ArrVal_1810) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse10 v_DerPreprocessor_4) v_arrayElimCell_146) |c_ULTIMATE.start_main_~uneq~0#1|))) .cse7)) (or .cse8 (forall ((v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store |c_#memory_int#2| .cse9 v_ArrVal_1810) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset|)))) (or (forall ((v_arrayElimCell_148 (_ BitVec 32)) (v_arrayElimCell_149 (_ BitVec 32)) (v_ArrVal_1812 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse12 (store |c_#memory_int#2| .cse9 v_ArrVal_1810))) (or (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store .cse12 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1812) v_arrayElimCell_148) v_arrayElimCell_149)) (not (= (store (select .cse12 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse10 (select v_ArrVal_1812 .cse10)) v_ArrVal_1812))))) .cse13) (or .cse6 (and .cse1 .cse2 .cse3 .cse4 (or .cse14 .cse5 .cse13)))))))) is different from false [2024-11-28 03:14:43,925 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse18 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse2 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_insert_~head#1.base|) |c_ULTIMATE.start_sll_insert_~head#1.offset|)) (.cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_insert_#t~ret7#1.offset|)) (.cse3 (= |c_ULTIMATE.start_sll_insert_#t~ret7#1.base| .cse18))) (let ((.cse8 (not .cse3)) (.cse14 (forall ((v_arrayElimCell_148 (_ BitVec 32)) (v_arrayElimCell_149 (_ BitVec 32)) (v_ArrVal_1812 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store (store |c_#memory_int#2| .cse2 v_ArrVal_1810) |c_ULTIMATE.start_sll_insert_#t~ret7#1.base| v_ArrVal_1812) v_arrayElimCell_148) v_arrayElimCell_149)) (not (= (store (select |c_#memory_int#2| |c_ULTIMATE.start_sll_insert_#t~ret7#1.base|) .cse1 (select v_ArrVal_1812 .cse1)) v_ArrVal_1812)))))) (let ((.cse5 (forall ((v_arrayElimCell_146 (_ BitVec 32)) (v_arrayElimCell_148 (_ BitVec 32)) (v_arrayElimCell_149 (_ BitVec 32)) (v_ArrVal_1812 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse22 (store |c_#memory_int#2| .cse2 v_ArrVal_1810))) (or (= |c_ULTIMATE.start_main_~uneq~0#1| (select v_ArrVal_1812 v_arrayElimCell_146)) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store .cse22 |c_ULTIMATE.start_sll_insert_#t~ret7#1.base| v_ArrVal_1812) v_arrayElimCell_148) v_arrayElimCell_149)) (not (= (store (select .cse22 |c_ULTIMATE.start_sll_insert_#t~ret7#1.base|) .cse1 (select v_ArrVal_1812 .cse1)) v_ArrVal_1812)))))) (.cse6 (or .cse8 .cse14)) (.cse7 (= (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_insert_~head#1.base|) |c_ULTIMATE.start_sll_insert_~head#1.offset|) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (.cse10 (or (forall ((v_arrayElimCell_146 (_ BitVec 32)) (v_ArrVal_1812 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_144 (_ BitVec 32))) (let ((.cse21 (store |c_#memory_int#2| .cse2 v_ArrVal_1810))) (or (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store .cse21 |c_ULTIMATE.start_sll_insert_#t~ret7#1.base| v_ArrVal_1812) v_arrayElimCell_144) v_arrayElimCell_146)) (not (= (store (select .cse21 |c_ULTIMATE.start_sll_insert_#t~ret7#1.base|) .cse1 (select v_ArrVal_1812 .cse1)) v_ArrVal_1812))))) .cse3)) (.cse11 (forall ((v_arrayElimCell_146 (_ BitVec 32)) (v_arrayElimCell_148 (_ BitVec 32)) (v_arrayElimCell_149 (_ BitVec 32)) (v_ArrVal_1812 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_144 (_ BitVec 32)) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse20 (store |c_#memory_int#2| .cse2 v_ArrVal_1810))) (let ((.cse19 (store .cse20 |c_ULTIMATE.start_sll_insert_#t~ret7#1.base| v_ArrVal_1812))) (or (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select .cse19 v_arrayElimCell_144) v_arrayElimCell_146)) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select .cse19 v_arrayElimCell_148) v_arrayElimCell_149)) (not (= (store (select .cse20 |c_ULTIMATE.start_sll_insert_#t~ret7#1.base|) .cse1 (select v_ArrVal_1812 .cse1)) v_ArrVal_1812))))))) (.cse4 (= .cse2 .cse18)) (.cse12 (or (forall ((v_ArrVal_1812 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_144 (_ BitVec 32))) (let ((.cse17 (store |c_#memory_int#2| .cse2 v_ArrVal_1810))) (or (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store .cse17 |c_ULTIMATE.start_sll_insert_#t~ret7#1.base| v_ArrVal_1812) v_arrayElimCell_144) |c_ULTIMATE.start_sll_insert_#t~ret7#1.offset|)) (not (= (store (select .cse17 |c_ULTIMATE.start_sll_insert_#t~ret7#1.base|) .cse1 (select v_ArrVal_1812 .cse1)) v_ArrVal_1812))))) .cse3)) (.cse13 (forall ((v_arrayElimCell_148 (_ BitVec 32)) (v_arrayElimCell_149 (_ BitVec 32)) (v_ArrVal_1812 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_144 (_ BitVec 32)) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse16 (store |c_#memory_int#2| .cse2 v_ArrVal_1810))) (let ((.cse15 (store .cse16 |c_ULTIMATE.start_sll_insert_#t~ret7#1.base| v_ArrVal_1812))) (or (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select .cse15 v_arrayElimCell_148) v_arrayElimCell_149)) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select .cse15 v_arrayElimCell_144) |c_ULTIMATE.start_sll_insert_#t~ret7#1.offset|)) (not (= (store (select .cse16 |c_ULTIMATE.start_sll_insert_#t~ret7#1.base|) .cse1 (select v_ArrVal_1812 .cse1)) v_ArrVal_1812)))))))) (and (forall ((v_arrayElimCell_148 (_ BitVec 32)) (v_arrayElimCell_149 (_ BitVec 32)) (v_ArrVal_1812 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_int#2| .cse2 v_ArrVal_1810))) (or (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store .cse0 |c_ULTIMATE.start_sll_insert_#t~ret7#1.base| v_ArrVal_1812) v_arrayElimCell_148) v_arrayElimCell_149)) (= |c_ULTIMATE.start_main_~uneq~0#1| (select v_ArrVal_1812 |c_ULTIMATE.start_sll_insert_#t~ret7#1.offset|)) (not (= (store (select .cse0 |c_ULTIMATE.start_sll_insert_#t~ret7#1.base|) .cse1 (select v_ArrVal_1812 .cse1)) v_ArrVal_1812))))) (or (forall ((v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store |c_#memory_int#2| .cse2 v_ArrVal_1810) |c_ULTIMATE.start_sll_insert_#t~ret7#1.base|) |c_ULTIMATE.start_sll_insert_#t~ret7#1.offset|))) .cse3) (or .cse4 (and .cse5 .cse6 (or (forall ((v_arrayElimCell_146 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (store (select (store |c_#memory_int#2| .cse2 v_ArrVal_1810) |c_ULTIMATE.start_sll_insert_#t~ret7#1.base|) .cse1 v_DerPreprocessor_4) v_arrayElimCell_146))) .cse3))) (or .cse7 (and .cse5 (or (forall ((v_arrayElimCell_146 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_~uneq~0#1| (select (store (select (store |c_#memory_int#2| .cse2 v_ArrVal_1810) |c_ULTIMATE.start_sll_insert_#t~ret7#1.base|) .cse1 v_DerPreprocessor_5) v_arrayElimCell_146))) .cse3))) (or .cse8 (forall ((v_arrayElimCell_148 (_ BitVec 32)) (v_arrayElimCell_149 (_ BitVec 32)) (v_ArrVal_1812 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1810 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse9 (store |c_#memory_int#2| .cse2 v_ArrVal_1810))) (or (= |c_ULTIMATE.start_main_~uneq~0#1| (select (select (store .cse9 |c_ULTIMATE.start_sll_insert_#t~ret7#1.base| v_ArrVal_1812) v_arrayElimCell_148) v_arrayElimCell_149)) (not (= (store (select .cse9 |c_ULTIMATE.start_sll_insert_#t~ret7#1.base|) .cse1 (select v_ArrVal_1812 .cse1)) v_ArrVal_1812)))))) (or .cse4 (and .cse10 .cse11 .cse6 .cse12 .cse13)) (or .cse7 (and .cse10 .cse11 (or .cse8 .cse14 .cse4) .cse12 .cse13))))))) is different from false