./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_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_7bd6f302-5d54-4886-9346-e6b011fee98a/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd6f302-5d54-4886-9346-e6b011fee98a/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_7bd6f302-5d54-4886-9346-e6b011fee98a/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd6f302-5d54-4886-9346-e6b011fee98a/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd6f302-5d54-4886-9346-e6b011fee98a/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_7bd6f302-5d54-4886-9346-e6b011fee98a/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 [2024-11-27 20:06:17,941 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:06:18,032 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd6f302-5d54-4886-9346-e6b011fee98a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:06:18,041 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:06:18,041 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:06:18,081 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:06:18,081 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:06:18,082 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:06:18,082 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:06:18,082 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:06:18,083 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:06:18,083 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:06:18,083 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:06:18,084 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:06:18,085 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:06:18,085 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:06:18,085 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:06:18,085 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:06:18,085 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:06:18,085 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:06:18,086 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:06:18,086 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:06:18,086 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:06:18,086 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:06:18,086 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:06:18,086 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:06:18,086 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:06:18,086 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:06:18,086 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:06:18,086 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:06:18,086 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:06:18,086 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:06:18,086 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:06:18,087 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:06:18,087 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:06:18,087 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:06:18,087 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:06:18,087 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:06:18,087 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:06:18,087 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:06:18,088 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:06:18,088 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:06:18,088 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:06:18,088 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:06:18,089 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:06:18,089 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:06:18,089 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:06:18,089 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:06:18,089 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_7bd6f302-5d54-4886-9346-e6b011fee98a/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 [2024-11-27 20:06:18,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:06:18,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:06:18,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:06:18,443 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:06:18,444 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:06:18,448 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd6f302-5d54-4886-9346-e6b011fee98a/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-2.i [2024-11-27 20:06:21,528 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd6f302-5d54-4886-9346-e6b011fee98a/bin/uautomizer-verify-aQ6SnzHsRB/data/20900337b/3fb641d550484b45a12d3aee499a1962/FLAG0a8582db1 [2024-11-27 20:06:21,962 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:06:21,962 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd6f302-5d54-4886-9346-e6b011fee98a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-2.i [2024-11-27 20:06:21,979 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd6f302-5d54-4886-9346-e6b011fee98a/bin/uautomizer-verify-aQ6SnzHsRB/data/20900337b/3fb641d550484b45a12d3aee499a1962/FLAG0a8582db1 [2024-11-27 20:06:22,008 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd6f302-5d54-4886-9346-e6b011fee98a/bin/uautomizer-verify-aQ6SnzHsRB/data/20900337b/3fb641d550484b45a12d3aee499a1962 [2024-11-27 20:06:22,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:06:22,012 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:06:22,014 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:06:22,016 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:06:22,020 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:06:22,021 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:06:22" (1/1) ... [2024-11-27 20:06:22,022 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@398f030a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:22, skipping insertion in model container [2024-11-27 20:06:22,022 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:06:22" (1/1) ... [2024-11-27 20:06:22,086 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:06:22,610 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_7bd6f302-5d54-4886-9346-e6b011fee98a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-2.i[33519,33532] [2024-11-27 20:06:22,760 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:06:22,776 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:06:22,811 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_7bd6f302-5d54-4886-9346-e6b011fee98a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-2.i[33519,33532] [2024-11-27 20:06:22,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:06:22,925 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:06:22,925 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:22 WrapperNode [2024-11-27 20:06:22,927 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:06:22,928 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:06:22,928 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:06:22,928 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:06:22,937 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:22" (1/1) ... [2024-11-27 20:06:22,973 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:22" (1/1) ... [2024-11-27 20:06:23,035 INFO L138 Inliner]: procedures = 176, calls = 220, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 940 [2024-11-27 20:06:23,035 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:06:23,036 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:06:23,036 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:06:23,036 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:06:23,046 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:22" (1/1) ... [2024-11-27 20:06:23,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:22" (1/1) ... [2024-11-27 20:06:23,054 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:22" (1/1) ... [2024-11-27 20:06:23,158 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]. [2024-11-27 20:06:23,158 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:22" (1/1) ... [2024-11-27 20:06:23,159 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:22" (1/1) ... [2024-11-27 20:06:23,215 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:22" (1/1) ... [2024-11-27 20:06:23,217 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:22" (1/1) ... [2024-11-27 20:06:23,234 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:22" (1/1) ... [2024-11-27 20:06:23,238 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:22" (1/1) ... [2024-11-27 20:06:23,246 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:22" (1/1) ... [2024-11-27 20:06:23,264 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:06:23,268 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:06:23,268 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:06:23,268 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:06:23,271 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:22" (1/1) ... [2024-11-27 20:06:23,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:06:23,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd6f302-5d54-4886-9346-e6b011fee98a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:06:23,323 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd6f302-5d54-4886-9346-e6b011fee98a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:06:23,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd6f302-5d54-4886-9346-e6b011fee98a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:06:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 20:06:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 20:06:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 20:06:23,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 20:06:23,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-27 20:06:23,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-27 20:06:23,364 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-27 20:06:23,364 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-27 20:06:23,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 20:06:23,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:06:23,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-27 20:06:23,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-27 20:06:23,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-27 20:06:23,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-27 20:06:23,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 20:06:23,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:06:23,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 20:06:23,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:06:23,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:06:23,699 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:06:23,701 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:06:25,170 INFO L? ?]: Removed 218 outVars from TransFormulas that were not future-live. [2024-11-27 20:06:25,170 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:06:25,196 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:06:25,196 INFO L312 CfgBuilder]: Removed 23 assume(true) statements. [2024-11-27 20:06:25,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:06:25 BoogieIcfgContainer [2024-11-27 20:06:25,197 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:06:25,201 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:06:25,202 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:06:25,208 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:06:25,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:06:22" (1/3) ... [2024-11-27 20:06:25,210 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ff4fdeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:06:25, skipping insertion in model container [2024-11-27 20:06:25,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:22" (2/3) ... [2024-11-27 20:06:25,211 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ff4fdeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:06:25, skipping insertion in model container [2024-11-27 20:06:25,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:06:25" (3/3) ... [2024-11-27 20:06:25,213 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_FNV_nondet_test1-2.i [2024-11-27 20:06:25,231 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:06:25,233 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_FNV_nondet_test1-2.i that has 3 procedures, 253 locations, 1 initial locations, 25 loop locations, and 1 error locations. [2024-11-27 20:06:25,320 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:06:25,335 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;@65590241, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:06:25,335 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:06:25,341 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) [2024-11-27 20:06:25,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-27 20:06:25,346 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:25,347 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:25,347 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:25,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:25,353 INFO L85 PathProgramCache]: Analyzing trace with hash 594735263, now seen corresponding path program 1 times [2024-11-27 20:06:25,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:25,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488723343] [2024-11-27 20:06:25,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:25,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:25,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:25,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:25,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488723343] [2024-11-27 20:06:25,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488723343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:25,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:25,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:06:25,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45331573] [2024-11-27 20:06:25,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:25,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:06:25,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:25,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:06:25,626 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:06:25,630 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) [2024-11-27 20:06:25,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:25,779 INFO L93 Difference]: Finished difference Result 694 states and 1108 transitions. [2024-11-27 20:06:25,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:06:25,784 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 [2024-11-27 20:06:25,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:25,798 INFO L225 Difference]: With dead ends: 694 [2024-11-27 20:06:25,800 INFO L226 Difference]: Without dead ends: 409 [2024-11-27 20:06:25,806 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 [2024-11-27 20:06:25,811 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 [2024-11-27 20:06:25,812 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] [2024-11-27 20:06:25,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2024-11-27 20:06:25,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 212. [2024-11-27 20:06:25,885 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) [2024-11-27 20:06:25,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 300 transitions. [2024-11-27 20:06:25,898 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 300 transitions. Word has length 8 [2024-11-27 20:06:25,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:25,901 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 300 transitions. [2024-11-27 20:06:25,902 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) [2024-11-27 20:06:25,902 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 300 transitions. [2024-11-27 20:06:25,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-27 20:06:25,905 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:25,906 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] [2024-11-27 20:06:25,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:06:25,906 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:25,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:25,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1900868658, now seen corresponding path program 1 times [2024-11-27 20:06:25,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:25,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303562679] [2024-11-27 20:06:25,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:25,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:26,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:26,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:26,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303562679] [2024-11-27 20:06:26,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303562679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:26,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:26,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:06:26,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659065747] [2024-11-27 20:06:26,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:26,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:06:26,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:26,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:06:26,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:06:26,796 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) [2024-11-27 20:06:26,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:26,989 INFO L93 Difference]: Finished difference Result 424 states and 600 transitions. [2024-11-27 20:06:26,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:06:26,990 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 [2024-11-27 20:06:26,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:26,991 INFO L225 Difference]: With dead ends: 424 [2024-11-27 20:06:26,992 INFO L226 Difference]: Without dead ends: 215 [2024-11-27 20:06:26,992 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 [2024-11-27 20:06:26,995 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 [2024-11-27 20:06:26,996 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] [2024-11-27 20:06:26,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-27 20:06:27,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 212. [2024-11-27 20:06:27,024 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) [2024-11-27 20:06:27,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 293 transitions. [2024-11-27 20:06:27,028 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 293 transitions. Word has length 84 [2024-11-27 20:06:27,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:27,029 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 293 transitions. [2024-11-27 20:06:27,029 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) [2024-11-27 20:06:27,030 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 293 transitions. [2024-11-27 20:06:27,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-27 20:06:27,034 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:27,034 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] [2024-11-27 20:06:27,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:06:27,034 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:27,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:27,035 INFO L85 PathProgramCache]: Analyzing trace with hash -424033702, now seen corresponding path program 1 times [2024-11-27 20:06:27,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:27,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273687305] [2024-11-27 20:06:27,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:27,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:27,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:27,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:27,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:27,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273687305] [2024-11-27 20:06:27,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273687305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:27,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:27,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:06:27,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273166274] [2024-11-27 20:06:27,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:27,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:06:27,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:27,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:06:27,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:06:27,438 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) [2024-11-27 20:06:27,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:27,520 INFO L93 Difference]: Finished difference Result 427 states and 592 transitions. [2024-11-27 20:06:27,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:06:27,521 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 [2024-11-27 20:06:27,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:27,523 INFO L225 Difference]: With dead ends: 427 [2024-11-27 20:06:27,524 INFO L226 Difference]: Without dead ends: 218 [2024-11-27 20:06:27,524 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 [2024-11-27 20:06:27,529 INFO L435 NwaCegarLoop]: 286 mSDtfsCounter, 1 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:27,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 550 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:06:27,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-11-27 20:06:27,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2024-11-27 20:06:27,550 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) [2024-11-27 20:06:27,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 299 transitions. [2024-11-27 20:06:27,557 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 299 transitions. Word has length 84 [2024-11-27 20:06:27,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:27,558 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 299 transitions. [2024-11-27 20:06:27,558 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) [2024-11-27 20:06:27,559 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 299 transitions. [2024-11-27 20:06:27,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-27 20:06:27,564 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:27,564 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] [2024-11-27 20:06:27,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:06:27,565 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:27,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:27,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1810819112, now seen corresponding path program 1 times [2024-11-27 20:06:27,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:27,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569810314] [2024-11-27 20:06:27,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:27,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:27,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:27,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:27,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569810314] [2024-11-27 20:06:27,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569810314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:27,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:27,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:06:27,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907980506] [2024-11-27 20:06:27,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:27,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:06:27,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:27,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:06:27,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:06:27,899 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) [2024-11-27 20:06:28,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:28,022 INFO L93 Difference]: Finished difference Result 570 states and 792 transitions. [2024-11-27 20:06:28,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:06:28,026 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 [2024-11-27 20:06:28,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:28,029 INFO L225 Difference]: With dead ends: 570 [2024-11-27 20:06:28,030 INFO L226 Difference]: Without dead ends: 355 [2024-11-27 20:06:28,031 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 [2024-11-27 20:06:28,032 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 [2024-11-27 20:06:28,034 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] [2024-11-27 20:06:28,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-11-27 20:06:28,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2024-11-27 20:06:28,055 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) [2024-11-27 20:06:28,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 495 transitions. [2024-11-27 20:06:28,059 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 495 transitions. Word has length 84 [2024-11-27 20:06:28,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:28,059 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 495 transitions. [2024-11-27 20:06:28,059 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) [2024-11-27 20:06:28,059 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 495 transitions. [2024-11-27 20:06:28,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-27 20:06:28,063 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:28,063 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] [2024-11-27 20:06:28,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:06:28,064 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:28,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:28,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1615395432, now seen corresponding path program 1 times [2024-11-27 20:06:28,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:28,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550312461] [2024-11-27 20:06:28,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:28,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:28,438 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 20:06:28,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:28,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550312461] [2024-11-27 20:06:28,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550312461] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:06:28,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104750537] [2024-11-27 20:06:28,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:28,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:06:28,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd6f302-5d54-4886-9346-e6b011fee98a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:06:28,446 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd6f302-5d54-4886-9346-e6b011fee98a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:06:28,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd6f302-5d54-4886-9346-e6b011fee98a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:06:28,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:28,871 INFO L256 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:06:28,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:06:29,151 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 20:06:29,152 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:06:29,415 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 20:06:29,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104750537] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:06:29,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:06:29,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-27 20:06:29,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42863320] [2024-11-27 20:06:29,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:06:29,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:06:29,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:29,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:06:29,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:06:29,422 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) [2024-11-27 20:06:29,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:29,553 INFO L93 Difference]: Finished difference Result 835 states and 1158 transitions. [2024-11-27 20:06:29,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:06:29,554 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 [2024-11-27 20:06:29,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:29,562 INFO L225 Difference]: With dead ends: 835 [2024-11-27 20:06:29,562 INFO L226 Difference]: Without dead ends: 828 [2024-11-27 20:06:29,563 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 [2024-11-27 20:06:29,567 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 [2024-11-27 20:06:29,567 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] [2024-11-27 20:06:29,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2024-11-27 20:06:29,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 828. [2024-11-27 20:06:29,616 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) [2024-11-27 20:06:29,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1148 transitions. [2024-11-27 20:06:29,622 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1148 transitions. Word has length 99 [2024-11-27 20:06:29,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:29,624 INFO L471 AbstractCegarLoop]: Abstraction has 828 states and 1148 transitions. [2024-11-27 20:06:29,625 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) [2024-11-27 20:06:29,625 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1148 transitions. [2024-11-27 20:06:29,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2024-11-27 20:06:29,633 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:29,634 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] [2024-11-27 20:06:29,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd6f302-5d54-4886-9346-e6b011fee98a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:06:29,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd6f302-5d54-4886-9346-e6b011fee98a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:06:29,835 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:29,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:29,835 INFO L85 PathProgramCache]: Analyzing trace with hash 227206931, now seen corresponding path program 1 times [2024-11-27 20:06:29,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:29,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419200707] [2024-11-27 20:06:29,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:29,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:31,205 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 7 proven. 329 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2024-11-27 20:06:31,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:31,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419200707] [2024-11-27 20:06:31,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419200707] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:06:31,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910710041] [2024-11-27 20:06:31,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:31,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:06:31,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd6f302-5d54-4886-9346-e6b011fee98a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:06:31,210 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd6f302-5d54-4886-9346-e6b011fee98a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:06:31,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd6f302-5d54-4886-9346-e6b011fee98a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:06:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:31,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 1658 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:06:32,009 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:06:32,707 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 454 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 20:06:32,709 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:06:33,411 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 454 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 20:06:33,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910710041] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:06:33,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:06:33,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2024-11-27 20:06:33,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415655912] [2024-11-27 20:06:33,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:06:33,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 20:06:33,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:33,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 20:06:33,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-27 20:06:33,416 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) [2024-11-27 20:06:35,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:35,378 INFO L93 Difference]: Finished difference Result 2457 states and 3427 transitions. [2024-11-27 20:06:35,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 20:06:35,379 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 [2024-11-27 20:06:35,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:35,389 INFO L225 Difference]: With dead ends: 2457 [2024-11-27 20:06:35,389 INFO L226 Difference]: Without dead ends: 1973 [2024-11-27 20:06:35,391 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 [2024-11-27 20:06:35,391 INFO L435 NwaCegarLoop]: 473 mSDtfsCounter, 13672 mSDsluCounter, 2399 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:35,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13672 Valid, 2872 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-27 20:06:35,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1973 states. [2024-11-27 20:06:35,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1973 to 1972. [2024-11-27 20:06:35,517 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) [2024-11-27 20:06:35,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1972 states to 1972 states and 2745 transitions. [2024-11-27 20:06:35,528 INFO L78 Accepts]: Start accepts. Automaton has 1972 states and 2745 transitions. Word has length 327 [2024-11-27 20:06:35,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:35,529 INFO L471 AbstractCegarLoop]: Abstraction has 1972 states and 2745 transitions. [2024-11-27 20:06:35,529 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) [2024-11-27 20:06:35,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1972 states and 2745 transitions. [2024-11-27 20:06:35,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2024-11-27 20:06:35,552 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:35,552 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] [2024-11-27 20:06:35,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd6f302-5d54-4886-9346-e6b011fee98a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:06:35,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd6f302-5d54-4886-9346-e6b011fee98a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-27 20:06:35,757 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:35,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:35,757 INFO L85 PathProgramCache]: Analyzing trace with hash -838364147, now seen corresponding path program 1 times [2024-11-27 20:06:35,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:35,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608492905] [2024-11-27 20:06:35,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:35,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:14:22,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:24,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3417 backedges. 505 proven. 3 refuted. 0 times theorem prover too weak. 2909 trivial. 0 not checked. [2024-11-27 20:14:24,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:14:24,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608492905] [2024-11-27 20:14:24,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608492905] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:14:24,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650809059] [2024-11-27 20:14:24,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:24,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:14:24,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd6f302-5d54-4886-9346-e6b011fee98a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:14:24,777 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd6f302-5d54-4886-9346-e6b011fee98a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:14:24,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd6f302-5d54-4886-9346-e6b011fee98a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:15:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:01,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 3879 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-27 20:15:01,617 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:01,694 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 [2024-11-27 20:15:02,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3417 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 3119 trivial. 0 not checked. [2024-11-27 20:15:02,875 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:15:02,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650809059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:02,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:15:02,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [4] total 14 [2024-11-27 20:15:02,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288501447] [2024-11-27 20:15:02,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:02,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 20:15:02,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:02,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 20:15:02,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:15:02,879 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) [2024-11-27 20:15:06,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:06,300 INFO L93 Difference]: Finished difference Result 3889 states and 5408 transitions. [2024-11-27 20:15:06,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 20:15:06,301 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 [2024-11-27 20:15:06,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:06,309 INFO L225 Difference]: With dead ends: 3889 [2024-11-27 20:15:06,310 INFO L226 Difference]: Without dead ends: 2010 [2024-11-27 20:15:06,313 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 796 GetRequests, 776 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2024-11-27 20:15:06,313 INFO L435 NwaCegarLoop]: 254 mSDtfsCounter, 844 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s 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, 2.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:06,314 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 1399 Invalid, 1259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1252 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-27 20:15:06,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2024-11-27 20:15:06,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 2004. [2024-11-27 20:15:06,381 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) [2024-11-27 20:15:06,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2004 states to 2004 states and 2782 transitions. [2024-11-27 20:15:06,392 INFO L78 Accepts]: Start accepts. Automaton has 2004 states and 2782 transitions. Word has length 785 [2024-11-27 20:15:06,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:06,392 INFO L471 AbstractCegarLoop]: Abstraction has 2004 states and 2782 transitions. [2024-11-27 20:15:06,393 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) [2024-11-27 20:15:06,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2004 states and 2782 transitions. [2024-11-27 20:15:06,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2024-11-27 20:15:06,420 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:06,420 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] [2024-11-27 20:15:06,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd6f302-5d54-4886-9346-e6b011fee98a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 20:15:06,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd6f302-5d54-4886-9346-e6b011fee98a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-27 20:15:06,621 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:15:06,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:06,623 INFO L85 PathProgramCache]: Analyzing trace with hash -818068256, now seen corresponding path program 1 times [2024-11-27 20:15:06,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:06,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386013992] [2024-11-27 20:15:06,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:06,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:17:51,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:17:53,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3417 backedges. 505 proven. 3 refuted. 0 times theorem prover too weak. 2909 trivial. 0 not checked. [2024-11-27 20:17:53,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:17:53,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386013992] [2024-11-27 20:17:53,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386013992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:17:53,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863059958] [2024-11-27 20:17:53,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:17:53,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:17:53,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd6f302-5d54-4886-9346-e6b011fee98a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:17:53,926 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd6f302-5d54-4886-9346-e6b011fee98a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:17:53,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd6f302-5d54-4886-9346-e6b011fee98a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:18:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:18:07,546 INFO L256 TraceCheckSpWp]: Trace formula consists of 3880 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 20:18:07,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:18:07,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3417 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 3119 trivial. 0 not checked. [2024-11-27 20:18:07,647 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:18:07,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863059958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:18:07,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:18:07,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-27 20:18:07,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043834452] [2024-11-27 20:18:07,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:18:07,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:18:07,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:18:07,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:18:07,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:18:07,650 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) [2024-11-27 20:18:07,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:18:07,951 INFO L93 Difference]: Finished difference Result 4271 states and 5891 transitions. [2024-11-27 20:18:07,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:18:07,952 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 [2024-11-27 20:18:07,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:18:07,960 INFO L225 Difference]: With dead ends: 4271 [2024-11-27 20:18:07,961 INFO L226 Difference]: Without dead ends: 2392 [2024-11-27 20:18:07,964 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 [2024-11-27 20:18:07,964 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:18:07,965 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 659 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:18:07,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2392 states. [2024-11-27 20:18:08,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2392 to 2302. [2024-11-27 20:18:08,034 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) [2024-11-27 20:18:08,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 3134 transitions. [2024-11-27 20:18:08,045 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 3134 transitions. Word has length 786 [2024-11-27 20:18:08,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:18:08,045 INFO L471 AbstractCegarLoop]: Abstraction has 2302 states and 3134 transitions. [2024-11-27 20:18:08,045 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) [2024-11-27 20:18:08,046 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 3134 transitions. [2024-11-27 20:18:08,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 788 [2024-11-27 20:18:08,054 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:18:08,055 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] [2024-11-27 20:18:08,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd6f302-5d54-4886-9346-e6b011fee98a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 20:18:08,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd6f302-5d54-4886-9346-e6b011fee98a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-27 20:18:08,255 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:18:08,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:18:08,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1016777294, now seen corresponding path program 1 times [2024-11-27 20:18:08,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:18:08,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649469853] [2024-11-27 20:18:08,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:18:08,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:18:08,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:18:10,767 INFO L134 CoverageAnalysis]: Checked inductivity of 3417 backedges. 316 proven. 0 refuted. 0 times theorem prover too weak. 3101 trivial. 0 not checked. [2024-11-27 20:18:10,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:18:10,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649469853] [2024-11-27 20:18:10,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649469853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:18:10,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:18:10,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:18:10,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489197637] [2024-11-27 20:18:10,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:18:10,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:18:10,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:18:10,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:18:10,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:18:10,772 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) [2024-11-27 20:18:11,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:18:11,305 INFO L93 Difference]: Finished difference Result 4545 states and 6197 transitions. [2024-11-27 20:18:11,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:18:11,306 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 [2024-11-27 20:18:11,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:18:11,316 INFO L225 Difference]: With dead ends: 4545 [2024-11-27 20:18:11,316 INFO L226 Difference]: Without dead ends: 2372 [2024-11-27 20:18:11,319 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:18:11,320 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, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:18:11,321 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 749 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:18:11,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2372 states. [2024-11-27 20:18:11,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2372 to 2342. [2024-11-27 20:18:11,437 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) [2024-11-27 20:18:11,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3184 transitions. [2024-11-27 20:18:11,450 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3184 transitions. Word has length 787 [2024-11-27 20:18:11,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:18:11,450 INFO L471 AbstractCegarLoop]: Abstraction has 2342 states and 3184 transitions. [2024-11-27 20:18:11,450 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) [2024-11-27 20:18:11,451 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3184 transitions. [2024-11-27 20:18:11,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2024-11-27 20:18:11,460 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:18:11,461 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, 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] [2024-11-27 20:18:11,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 20:18:11,461 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:18:11,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:18:11,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1283359559, now seen corresponding path program 1 times [2024-11-27 20:18:11,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:18:11,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776294216] [2024-11-27 20:18:11,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:18:11,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:18:12,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:18:13,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3417 backedges. 334 proven. 0 refuted. 0 times theorem prover too weak. 3083 trivial. 0 not checked. [2024-11-27 20:18:13,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:18:13,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776294216] [2024-11-27 20:18:13,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776294216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:18:13,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:18:13,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:18:13,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286587181] [2024-11-27 20:18:13,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:18:13,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:18:13,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:18:13,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:18:13,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:18:13,551 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) [2024-11-27 20:18:14,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:18:14,190 INFO L93 Difference]: Finished difference Result 4664 states and 6361 transitions. [2024-11-27 20:18:14,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:18:14,191 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 [2024-11-27 20:18:14,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:18:14,200 INFO L225 Difference]: With dead ends: 4664 [2024-11-27 20:18:14,200 INFO L226 Difference]: Without dead ends: 2462 [2024-11-27 20:18:14,203 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 [2024-11-27 20:18:14,204 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 [2024-11-27 20:18:14,204 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] [2024-11-27 20:18:14,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2462 states. [2024-11-27 20:18:14,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2462 to 2422. [2024-11-27 20:18:14,272 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) [2024-11-27 20:18:14,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2422 states to 2422 states and 3294 transitions. [2024-11-27 20:18:14,278 INFO L78 Accepts]: Start accepts. Automaton has 2422 states and 3294 transitions. Word has length 788 [2024-11-27 20:18:14,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:18:14,278 INFO L471 AbstractCegarLoop]: Abstraction has 2422 states and 3294 transitions. [2024-11-27 20:18:14,278 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) [2024-11-27 20:18:14,278 INFO L276 IsEmpty]: Start isEmpty. Operand 2422 states and 3294 transitions. [2024-11-27 20:18:14,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2024-11-27 20:18:14,287 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:18:14,287 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] [2024-11-27 20:18:14,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 20:18:14,288 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:18:14,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:18:14,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1660532253, now seen corresponding path program 1 times [2024-11-27 20:18:14,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:18:14,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292506422] [2024-11-27 20:18:14,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:18:14,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms