./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/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_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:56:54,949 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:56:55,023 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:56:55,028 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:56:55,028 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:56:55,060 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:56:55,060 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:56:55,060 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:56:55,061 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:56:55,061 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:56:55,061 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:56:55,061 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:56:55,061 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:56:55,061 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:56:55,061 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:56:55,062 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:56:55,062 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:56:55,062 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:56:55,063 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:56:55,064 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:56:55,064 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:56:55,064 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:56:55,064 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:56:55,064 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:56:55,064 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:56:55,064 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:56:55,065 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:56:55,065 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:56:55,065 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:56:55,065 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:56:55,065 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:56:55,065 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:56:55,065 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:56:55,065 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:56:55,065 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:56:55,065 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:56:55,066 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:56:55,066 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:56:55,066 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:56:55,066 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:56:55,066 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:56:55,066 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:56:55,066 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:56:55,066 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:56:55,066 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:56:55,066 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:56:55,067 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:56:55,067 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:56:55,067 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_66126608-7837-4a14-a6a7-44d1d17f725c/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 ! call(reach_error())) ) 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 -> 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 [2024-11-28 02:56:55,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:56:55,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:56:55,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:56:55,382 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:56:55,382 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:56:55,383 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test1-2.i [2024-11-28 02:56:58,293 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB/data/675279d8c/6cd21b75cb0146e6bd815af89524a7e2/FLAG524c864e0 [2024-11-28 02:56:58,758 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:56:58,759 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test1-2.i [2024-11-28 02:56:58,780 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB/data/675279d8c/6cd21b75cb0146e6bd815af89524a7e2/FLAG524c864e0 [2024-11-28 02:56:58,803 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB/data/675279d8c/6cd21b75cb0146e6bd815af89524a7e2 [2024-11-28 02:56:58,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:56:58,808 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:56:58,809 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:56:58,810 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:56:58,816 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:56:58,816 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:58" (1/1) ... [2024-11-28 02:56:58,819 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@521bc7ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:58, skipping insertion in model container [2024-11-28 02:56:58,819 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:58" (1/1) ... [2024-11-28 02:56:58,887 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:56:59,394 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test1-2.i[33519,33532] [2024-11-28 02:56:59,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:56:59,542 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:56:59,604 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test1-2.i[33519,33532] [2024-11-28 02:56:59,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:56:59,738 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:56:59,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:59 WrapperNode [2024-11-28 02:56:59,740 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:56:59,741 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:56:59,742 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:56:59,742 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:56:59,749 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:59" (1/1) ... [2024-11-28 02:56:59,769 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:59" (1/1) ... [2024-11-28 02:56:59,816 INFO L138 Inliner]: procedures = 176, calls = 220, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 940 [2024-11-28 02:56:59,817 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:56:59,817 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:56:59,818 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:56:59,818 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:56:59,827 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:59" (1/1) ... [2024-11-28 02:56:59,827 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:59" (1/1) ... [2024-11-28 02:56:59,836 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:59" (1/1) ... [2024-11-28 02:56:59,922 INFO L175 MemorySlicer]: Split 206 memory accesses to 2 slices as follows [2, 204]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 50 writes are split as follows [0, 50]. [2024-11-28 02:56:59,922 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:59" (1/1) ... [2024-11-28 02:56:59,922 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:59" (1/1) ... [2024-11-28 02:56:59,985 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:59" (1/1) ... [2024-11-28 02:56:59,990 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:59" (1/1) ... [2024-11-28 02:57:00,000 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:59" (1/1) ... [2024-11-28 02:57:00,003 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:59" (1/1) ... [2024-11-28 02:57:00,007 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:59" (1/1) ... [2024-11-28 02:57:00,013 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:57:00,014 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:57:00,015 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:57:00,015 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:57:00,016 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:59" (1/1) ... [2024-11-28 02:57:00,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:57:00,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:57:00,050 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:57:00,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:57:00,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:57:00,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:57:00,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:57:00,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:57:00,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-28 02:57:00,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-28 02:57:00,097 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-28 02:57:00,097 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-28 02:57:00,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 02:57:00,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:57:00,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 02:57:00,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 02:57:00,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 02:57:00,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 02:57:00,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:57:00,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:57:00,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:57:00,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:57:00,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:57:00,368 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:57:00,369 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:57:01,717 INFO L? ?]: Removed 218 outVars from TransFormulas that were not future-live. [2024-11-28 02:57:01,718 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:57:01,742 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:57:01,742 INFO L312 CfgBuilder]: Removed 23 assume(true) statements. [2024-11-28 02:57:01,742 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:01 BoogieIcfgContainer [2024-11-28 02:57:01,742 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:57:01,745 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:57:01,745 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:57:01,751 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:57:01,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:56:58" (1/3) ... [2024-11-28 02:57:01,752 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac67a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:01, skipping insertion in model container [2024-11-28 02:57:01,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:59" (2/3) ... [2024-11-28 02:57:01,752 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac67a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:01, skipping insertion in model container [2024-11-28 02:57:01,753 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:01" (3/3) ... [2024-11-28 02:57:01,754 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_BER_nondet_test1-2.i [2024-11-28 02:57:01,769 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:57:01,771 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_BER_nondet_test1-2.i that has 3 procedures, 253 locations, 1 initial locations, 25 loop locations, and 1 error locations. [2024-11-28 02:57:01,852 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:57:01,864 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=LoopHeads, 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;@580fb149, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:57:01,864 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:57:01,870 INFO L276 IsEmpty]: Start isEmpty. Operand has 249 states, 243 states have (on average 1.6008230452674896) internal successors, (389), 244 states have internal predecessors, (389), 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 02:57:01,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 02:57:01,877 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:57:01,878 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:01,878 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:57:01,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:01,884 INFO L85 PathProgramCache]: Analyzing trace with hash 594735263, now seen corresponding path program 1 times [2024-11-28 02:57:01,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:01,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498609750] [2024-11-28 02:57:01,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:01,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:02,106 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 02:57:02,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:02,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498609750] [2024-11-28 02:57:02,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498609750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:57:02,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:57:02,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:57:02,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044566691] [2024-11-28 02:57:02,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:57:02,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:57:02,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:02,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:57:02,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:57:02,140 INFO L87 Difference]: Start difference. First operand has 249 states, 243 states have (on average 1.6008230452674896) internal successors, (389), 244 states have internal predecessors, (389), 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) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:02,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:57:02,291 INFO L93 Difference]: Finished difference Result 694 states and 1108 transitions. [2024-11-28 02:57:02,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:57:02,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-28 02:57:02,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:57:02,310 INFO L225 Difference]: With dead ends: 694 [2024-11-28 02:57:02,310 INFO L226 Difference]: Without dead ends: 409 [2024-11-28 02:57:02,315 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 02:57:02,318 INFO L435 NwaCegarLoop]: 392 mSDtfsCounter, 278 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:57:02,319 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 736 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:57:02,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2024-11-28 02:57:02,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 212. [2024-11-28 02:57:02,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 207 states have (on average 1.4202898550724639) internal successors, (294), 207 states have internal predecessors, (294), 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 02:57:02,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 300 transitions. [2024-11-28 02:57:02,382 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 300 transitions. Word has length 8 [2024-11-28 02:57:02,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:57:02,383 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 300 transitions. [2024-11-28 02:57:02,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:02,383 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 300 transitions. [2024-11-28 02:57:02,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-28 02:57:02,386 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:57:02,387 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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 02:57:02,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:57:02,387 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:57:02,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:02,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1900868658, now seen corresponding path program 1 times [2024-11-28 02:57:02,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:02,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253753179] [2024-11-28 02:57:02,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:02,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:03,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:03,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:03,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253753179] [2024-11-28 02:57:03,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253753179] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:57:03,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:57:03,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:57:03,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228221294] [2024-11-28 02:57:03,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:57:03,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:57:03,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:03,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:57:03,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:57:03,055 INFO L87 Difference]: Start difference. First operand 212 states and 300 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:03,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:57:03,210 INFO L93 Difference]: Finished difference Result 424 states and 600 transitions. [2024-11-28 02:57:03,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:57:03,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-11-28 02:57:03,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:57:03,212 INFO L225 Difference]: With dead ends: 424 [2024-11-28 02:57:03,212 INFO L226 Difference]: Without dead ends: 215 [2024-11-28 02:57:03,213 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:57:03,214 INFO L435 NwaCegarLoop]: 271 mSDtfsCounter, 88 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:57:03,216 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 978 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:57:03,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-28 02:57:03,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 212. [2024-11-28 02:57:03,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 207 states have (on average 1.3864734299516908) internal successors, (287), 207 states have internal predecessors, (287), 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 02:57:03,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 293 transitions. [2024-11-28 02:57:03,241 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 293 transitions. Word has length 84 [2024-11-28 02:57:03,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:57:03,241 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 293 transitions. [2024-11-28 02:57:03,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:03,242 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 293 transitions. [2024-11-28 02:57:03,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-28 02:57:03,247 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:57:03,247 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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 02:57:03,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:57:03,248 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:57:03,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:03,254 INFO L85 PathProgramCache]: Analyzing trace with hash -424033702, now seen corresponding path program 1 times [2024-11-28 02:57:03,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:03,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818621089] [2024-11-28 02:57:03,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:03,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:03,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:03,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:03,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818621089] [2024-11-28 02:57:03,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818621089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:57:03,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:57:03,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:57:03,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659154691] [2024-11-28 02:57:03,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:57:03,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:57:03,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:03,584 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:57:03,584 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:57:03,584 INFO L87 Difference]: Start difference. First operand 212 states and 293 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:03,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:57:03,646 INFO L93 Difference]: Finished difference Result 427 states and 592 transitions. [2024-11-28 02:57:03,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:57:03,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-11-28 02:57:03,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:57:03,649 INFO L225 Difference]: With dead ends: 427 [2024-11-28 02:57:03,649 INFO L226 Difference]: Without dead ends: 218 [2024-11-28 02:57:03,652 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 02:57:03,652 INFO L435 NwaCegarLoop]: 286 mSDtfsCounter, 1 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:57:03,653 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 550 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:57:03,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-11-28 02:57:03,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2024-11-28 02:57:03,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 213 states have (on average 1.375586854460094) internal successors, (293), 213 states have internal predecessors, (293), 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 02:57:03,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 299 transitions. [2024-11-28 02:57:03,677 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 299 transitions. Word has length 84 [2024-11-28 02:57:03,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:57:03,677 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 299 transitions. [2024-11-28 02:57:03,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:03,677 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 299 transitions. [2024-11-28 02:57:03,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-28 02:57:03,679 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:57:03,679 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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 02:57:03,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:57:03,680 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:57:03,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:03,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1810819112, now seen corresponding path program 1 times [2024-11-28 02:57:03,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:03,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752243837] [2024-11-28 02:57:03,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:03,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:03,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:03,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:03,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:03,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752243837] [2024-11-28 02:57:03,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752243837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:57:03,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:57:03,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:57:03,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672607407] [2024-11-28 02:57:03,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:57:03,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:57:03,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:03,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:57:03,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:57:04,000 INFO L87 Difference]: Start difference. First operand 218 states and 299 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:04,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:57:04,124 INFO L93 Difference]: Finished difference Result 570 states and 792 transitions. [2024-11-28 02:57:04,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:57:04,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-11-28 02:57:04,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:57:04,130 INFO L225 Difference]: With dead ends: 570 [2024-11-28 02:57:04,130 INFO L226 Difference]: Without dead ends: 355 [2024-11-28 02:57:04,130 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 02:57:04,135 INFO L435 NwaCegarLoop]: 291 mSDtfsCounter, 135 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:57:04,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 574 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:57:04,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-11-28 02:57:04,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2024-11-28 02:57:04,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 350 states have (on average 1.3971428571428572) internal successors, (489), 350 states have internal predecessors, (489), 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 02:57:04,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 495 transitions. [2024-11-28 02:57:04,164 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 495 transitions. Word has length 84 [2024-11-28 02:57:04,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:57:04,164 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 495 transitions. [2024-11-28 02:57:04,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:04,164 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 495 transitions. [2024-11-28 02:57:04,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-28 02:57:04,169 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:57:04,169 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 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 02:57:04,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:57:04,170 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:57:04,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:04,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1615395432, now seen corresponding path program 1 times [2024-11-28 02:57:04,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:04,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348538382] [2024-11-28 02:57:04,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:04,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:04,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:04,501 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:57:04,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:04,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348538382] [2024-11-28 02:57:04,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348538382] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:57:04,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273781478] [2024-11-28 02:57:04,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:04,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:04,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:57:04,508 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:57:04,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:57:04,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:04,884 INFO L256 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:57:04,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:57:05,126 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:57:05,126 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:57:05,348 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:57:05,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273781478] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:57:05,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:57:05,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-28 02:57:05,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274745596] [2024-11-28 02:57:05,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:57:05,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:57:05,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:05,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:57:05,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:57:05,355 INFO L87 Difference]: Start difference. First operand 355 states and 495 transitions. Second operand has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-28 02:57:05,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:57:05,487 INFO L93 Difference]: Finished difference Result 835 states and 1158 transitions. [2024-11-28 02:57:05,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:57:05,488 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 99 [2024-11-28 02:57:05,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:57:05,492 INFO L225 Difference]: With dead ends: 835 [2024-11-28 02:57:05,492 INFO L226 Difference]: Without dead ends: 828 [2024-11-28 02:57:05,493 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:57:05,494 INFO L435 NwaCegarLoop]: 379 mSDtfsCounter, 1212 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:57:05,494 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 1583 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:57:05,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2024-11-28 02:57:05,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 828. [2024-11-28 02:57:05,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 814 states have (on average 1.3808353808353808) internal successors, (1124), 814 states have internal predecessors, (1124), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-28 02:57:05,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1148 transitions. [2024-11-28 02:57:05,527 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1148 transitions. Word has length 99 [2024-11-28 02:57:05,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:57:05,527 INFO L471 AbstractCegarLoop]: Abstraction has 828 states and 1148 transitions. [2024-11-28 02:57:05,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-28 02:57:05,528 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1148 transitions. [2024-11-28 02:57:05,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2024-11-28 02:57:05,532 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:57:05,533 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:05,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 02:57:05,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:05,733 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:57:05,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:05,734 INFO L85 PathProgramCache]: Analyzing trace with hash 227206931, now seen corresponding path program 1 times [2024-11-28 02:57:05,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:05,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327294921] [2024-11-28 02:57:05,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:05,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:07,116 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 7 proven. 329 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2024-11-28 02:57:07,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:07,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327294921] [2024-11-28 02:57:07,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327294921] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:57:07,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815150973] [2024-11-28 02:57:07,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:07,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:07,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:57:07,122 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:57:07,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:57:07,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:07,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 1658 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:57:07,934 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:57:08,579 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 454 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:57:08,579 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:57:09,303 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 454 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:57:09,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815150973] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:57:09,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:57:09,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2024-11-28 02:57:09,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039424398] [2024-11-28 02:57:09,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:57:09,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 02:57:09,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:09,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 02:57:09,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:57:09,310 INFO L87 Difference]: Start difference. First operand 828 states and 1148 transitions. Second operand has 16 states, 16 states have (on average 53.0) internal successors, (848), 16 states have internal predecessors, (848), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-28 02:57:11,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:57:11,362 INFO L93 Difference]: Finished difference Result 2457 states and 3427 transitions. [2024-11-28 02:57:11,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 02:57:11,364 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 53.0) internal successors, (848), 16 states have internal predecessors, (848), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 327 [2024-11-28 02:57:11,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:57:11,374 INFO L225 Difference]: With dead ends: 2457 [2024-11-28 02:57:11,374 INFO L226 Difference]: Without dead ends: 1973 [2024-11-28 02:57:11,376 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 653 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=312, Invalid=618, Unknown=0, NotChecked=0, Total=930 [2024-11-28 02:57:11,377 INFO L435 NwaCegarLoop]: 473 mSDtfsCounter, 13672 mSDsluCounter, 2399 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13672 SdHoareTripleChecker+Valid, 2872 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:57:11,377 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13672 Valid, 2872 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 02:57:11,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1973 states. [2024-11-28 02:57:11,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1973 to 1972. [2024-11-28 02:57:11,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1972 states, 1958 states have (on average 1.3896833503575077) internal successors, (2721), 1958 states have internal predecessors, (2721), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-28 02:57:11,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1972 states to 1972 states and 2745 transitions. [2024-11-28 02:57:11,471 INFO L78 Accepts]: Start accepts. Automaton has 1972 states and 2745 transitions. Word has length 327 [2024-11-28 02:57:11,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:57:11,472 INFO L471 AbstractCegarLoop]: Abstraction has 1972 states and 2745 transitions. [2024-11-28 02:57:11,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 53.0) internal successors, (848), 16 states have internal predecessors, (848), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-28 02:57:11,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1972 states and 2745 transitions. [2024-11-28 02:57:11,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2024-11-28 02:57:11,498 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:57:11,499 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 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] [2024-11-28 02:57:11,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:57:11,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:11,701 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:57:11,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:11,702 INFO L85 PathProgramCache]: Analyzing trace with hash -838364147, now seen corresponding path program 1 times [2024-11-28 02:57:11,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:11,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273546184] [2024-11-28 02:57:11,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:11,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:21,170 INFO L134 CoverageAnalysis]: Checked inductivity of 3417 backedges. 505 proven. 3 refuted. 0 times theorem prover too weak. 2909 trivial. 0 not checked. [2024-11-28 03:03:21,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:21,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273546184] [2024-11-28 03:03:21,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273546184] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:21,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712972107] [2024-11-28 03:03:21,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:21,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:21,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:21,173 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:21,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:03:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:50,902 INFO L256 TraceCheckSpWp]: Trace formula consists of 3879 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 03:03:50,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:51,002 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 18 treesize of output 7 [2024-11-28 03:03:52,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3417 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 3119 trivial. 0 not checked. [2024-11-28 03:03:52,105 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:03:52,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712972107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:52,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:03:52,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [4] total 14 [2024-11-28 03:03:52,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609316797] [2024-11-28 03:03:52,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:52,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:03:52,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:52,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:03:52,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:03:52,107 INFO L87 Difference]: Start difference. First operand 1972 states and 2745 transitions. Second operand has 12 states, 12 states have (on average 10.833333333333334) internal successors, (130), 12 states have internal predecessors, (130), 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 03:03:55,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:55,294 INFO L93 Difference]: Finished difference Result 3889 states and 5408 transitions. [2024-11-28 03:03:55,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:03:55,295 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.833333333333334) internal successors, (130), 12 states have internal predecessors, (130), 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 785 [2024-11-28 03:03:55,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:55,303 INFO L225 Difference]: With dead ends: 3889 [2024-11-28 03:03:55,303 INFO L226 Difference]: Without dead ends: 2010 [2024-11-28 03:03:55,307 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 796 GetRequests, 776 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2024-11-28 03:03:55,310 INFO L435 NwaCegarLoop]: 254 mSDtfsCounter, 844 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 1399 SdHoareTripleChecker+Invalid, 1259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:55,311 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 1399 Invalid, 1259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1252 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-28 03:03:55,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2024-11-28 03:03:55,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 2004. [2024-11-28 03:03:55,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2004 states, 1990 states have (on average 1.385929648241206) internal successors, (2758), 1990 states have internal predecessors, (2758), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-28 03:03:55,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2004 states to 2004 states and 2782 transitions. [2024-11-28 03:03:55,383 INFO L78 Accepts]: Start accepts. Automaton has 2004 states and 2782 transitions. Word has length 785 [2024-11-28 03:03:55,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:55,384 INFO L471 AbstractCegarLoop]: Abstraction has 2004 states and 2782 transitions. [2024-11-28 03:03:55,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.833333333333334) internal successors, (130), 12 states have internal predecessors, (130), 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 03:03:55,384 INFO L276 IsEmpty]: Start isEmpty. Operand 2004 states and 2782 transitions. [2024-11-28 03:03:55,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2024-11-28 03:03:55,409 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:55,409 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 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] [2024-11-28 03:03:55,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:03:55,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 03:03:55,610 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:55,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:55,613 INFO L85 PathProgramCache]: Analyzing trace with hash -818068256, now seen corresponding path program 1 times [2024-11-28 03:03:55,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:55,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597403021] [2024-11-28 03:03:55,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:55,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:11,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3417 backedges. 505 proven. 3 refuted. 0 times theorem prover too weak. 2909 trivial. 0 not checked. [2024-11-28 03:06:11,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:11,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597403021] [2024-11-28 03:06:11,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597403021] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:06:11,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568209828] [2024-11-28 03:06:11,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:11,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:11,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:06:11,425 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:06:11,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:06:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:22,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 3880 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 03:06:22,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:06:22,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3417 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 3119 trivial. 0 not checked. [2024-11-28 03:06:22,985 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:06:22,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568209828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:22,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:06:22,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 03:06:22,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971269294] [2024-11-28 03:06:22,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:22,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:06:22,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:22,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:06:22,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:06:22,988 INFO L87 Difference]: Start difference. First operand 2004 states and 2782 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 03:06:23,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:06:23,312 INFO L93 Difference]: Finished difference Result 4271 states and 5891 transitions. [2024-11-28 03:06:23,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:06:23,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 786 [2024-11-28 03:06:23,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:06:23,322 INFO L225 Difference]: With dead ends: 4271 [2024-11-28 03:06:23,322 INFO L226 Difference]: Without dead ends: 2392 [2024-11-28 03:06:23,325 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 785 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 03:06:23,326 INFO L435 NwaCegarLoop]: 283 mSDtfsCounter, 18 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:06:23,327 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 659 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:06:23,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2392 states. [2024-11-28 03:06:23,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2392 to 2302. [2024-11-28 03:06:23,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2302 states, 2288 states have (on average 1.3592657342657342) internal successors, (3110), 2288 states have internal predecessors, (3110), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-28 03:06:23,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 3134 transitions. [2024-11-28 03:06:23,448 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 3134 transitions. Word has length 786 [2024-11-28 03:06:23,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:06:23,450 INFO L471 AbstractCegarLoop]: Abstraction has 2302 states and 3134 transitions. [2024-11-28 03:06:23,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 03:06:23,450 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 3134 transitions. [2024-11-28 03:06:23,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 788 [2024-11-28 03:06:23,460 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:06:23,461 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 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] [2024-11-28 03:06:23,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 03:06:23,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:23,662 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:06:23,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:23,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1016777294, now seen corresponding path program 1 times [2024-11-28 03:06:23,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:23,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960544137] [2024-11-28 03:06:23,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:23,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:25,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3417 backedges. 316 proven. 0 refuted. 0 times theorem prover too weak. 3101 trivial. 0 not checked. [2024-11-28 03:06:25,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:25,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960544137] [2024-11-28 03:06:25,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960544137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:25,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:06:25,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:06:25,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654019410] [2024-11-28 03:06:25,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:25,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:06:25,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:25,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:06:25,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:06:25,895 INFO L87 Difference]: Start difference. First operand 2302 states and 3134 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 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 03:06:26,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:06:26,368 INFO L93 Difference]: Finished difference Result 4545 states and 6197 transitions. [2024-11-28 03:06:26,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:06:26,369 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 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 787 [2024-11-28 03:06:26,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:06:26,378 INFO L225 Difference]: With dead ends: 4545 [2024-11-28 03:06:26,379 INFO L226 Difference]: Without dead ends: 2372 [2024-11-28 03:06:26,382 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:06:26,383 INFO L435 NwaCegarLoop]: 282 mSDtfsCounter, 9 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:06:26,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 749 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:06:26,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2372 states. [2024-11-28 03:06:26,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2372 to 2342. [2024-11-28 03:06:26,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2342 states, 2328 states have (on average 1.3573883161512028) internal successors, (3160), 2328 states have internal predecessors, (3160), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-28 03:06:26,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3184 transitions. [2024-11-28 03:06:26,464 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3184 transitions. Word has length 787 [2024-11-28 03:06:26,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:06:26,464 INFO L471 AbstractCegarLoop]: Abstraction has 2342 states and 3184 transitions. [2024-11-28 03:06:26,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 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 03:06:26,465 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3184 transitions. [2024-11-28 03:06:26,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2024-11-28 03:06:26,475 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:06:26,475 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 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 03:06:26,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 03:06:26,476 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:06:26,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:26,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1283359559, now seen corresponding path program 1 times [2024-11-28 03:06:26,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:26,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064259807] [2024-11-28 03:06:26,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:26,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:27,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:28,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3417 backedges. 334 proven. 0 refuted. 0 times theorem prover too weak. 3083 trivial. 0 not checked. [2024-11-28 03:06:28,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:28,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064259807] [2024-11-28 03:06:28,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064259807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:28,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:06:28,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:06:28,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938587991] [2024-11-28 03:06:28,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:28,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:06:28,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:28,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:06:28,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:06:28,808 INFO L87 Difference]: Start difference. First operand 2342 states and 3184 transitions. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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 03:06:29,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:06:29,473 INFO L93 Difference]: Finished difference Result 4664 states and 6361 transitions. [2024-11-28 03:06:29,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:06:29,475 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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 788 [2024-11-28 03:06:29,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:06:29,484 INFO L225 Difference]: With dead ends: 4664 [2024-11-28 03:06:29,484 INFO L226 Difference]: Without dead ends: 2462 [2024-11-28 03:06:29,487 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:06:29,488 INFO L435 NwaCegarLoop]: 272 mSDtfsCounter, 13 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:06:29,489 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1010 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:06:29,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2462 states. [2024-11-28 03:06:29,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2462 to 2422. [2024-11-28 03:06:29,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2422 states, 2408 states have (on average 1.3579734219269104) internal successors, (3270), 2408 states have internal predecessors, (3270), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-28 03:06:29,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2422 states to 2422 states and 3294 transitions. [2024-11-28 03:06:29,594 INFO L78 Accepts]: Start accepts. Automaton has 2422 states and 3294 transitions. Word has length 788 [2024-11-28 03:06:29,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:06:29,594 INFO L471 AbstractCegarLoop]: Abstraction has 2422 states and 3294 transitions. [2024-11-28 03:06:29,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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 03:06:29,595 INFO L276 IsEmpty]: Start isEmpty. Operand 2422 states and 3294 transitions. [2024-11-28 03:06:29,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2024-11-28 03:06:29,610 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:06:29,610 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 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 03:06:29,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 03:06:29,610 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:06:29,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:29,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1660532253, now seen corresponding path program 1 times [2024-11-28 03:06:29,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:29,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997291671] [2024-11-28 03:06:29,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:29,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:10:47,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:10:48,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3417 backedges. 505 proven. 3 refuted. 0 times theorem prover too weak. 2909 trivial. 0 not checked. [2024-11-28 03:10:48,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:10:48,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997291671] [2024-11-28 03:10:48,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997291671] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:10:48,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325835273] [2024-11-28 03:10:48,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:10:48,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:10:48,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:10:48,165 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:10:48,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66126608-7837-4a14-a6a7-44d1d17f725c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process