./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.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_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1 --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 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 13:08:40,773 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 13:08:40,831 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 13:08:40,836 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 13:08:40,836 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 13:08:40,859 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 13:08:40,860 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 13:08:40,860 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 13:08:40,860 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 13:08:40,860 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 13:08:40,860 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 13:08:40,861 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 13:08:40,861 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 13:08:40,861 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 13:08:40,861 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 13:08:40,861 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 13:08:40,861 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 13:08:40,861 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 13:08:40,861 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 13:08:40,862 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 13:08:40,862 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 13:08:40,862 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 13:08:40,862 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 13:08:40,862 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 13:08:40,862 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 13:08:40,862 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 13:08:40,862 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 13:08:40,862 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 13:08:40,862 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 13:08:40,862 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:08:40,862 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:08:40,863 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:08:40,863 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:08:40,863 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 13:08:40,863 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:08:40,863 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:08:40,863 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:08:40,863 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:08:40,863 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 13:08:40,863 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 13:08:40,863 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 13:08:40,864 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 13:08:40,864 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 13:08:40,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 13:08:40,864 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 13:08:40,864 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 13:08:40,864 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 13:08:40,864 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 13:08:40,864 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_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1 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 -> 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c [2024-12-02 13:08:41,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 13:08:41,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 13:08:41,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 13:08:41,130 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 13:08:41,130 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 13:08:41,131 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.i [2024-12-02 13:08:43,755 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/data/81de4c688/9fff1e73fdaf49619a9f6ff5da0553ab/FLAG4d2aadb74 [2024-12-02 13:08:44,060 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 13:08:44,061 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.i [2024-12-02 13:08:44,077 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/data/81de4c688/9fff1e73fdaf49619a9f6ff5da0553ab/FLAG4d2aadb74 [2024-12-02 13:08:44,090 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/data/81de4c688/9fff1e73fdaf49619a9f6ff5da0553ab [2024-12-02 13:08:44,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 13:08:44,093 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 13:08:44,094 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 13:08:44,094 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 13:08:44,097 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 13:08:44,098 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:08:44" (1/1) ... [2024-12-02 13:08:44,099 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23289a64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:44, skipping insertion in model container [2024-12-02 13:08:44,099 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:08:44" (1/1) ... [2024-12-02 13:08:44,130 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 13:08:44,428 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_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.i[37435,37448] [2024-12-02 13:08:44,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:08:44,536 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 13:08:44,570 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_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.i[37435,37448] [2024-12-02 13:08:44,632 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:08:44,662 INFO L204 MainTranslator]: Completed translation [2024-12-02 13:08:44,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:44 WrapperNode [2024-12-02 13:08:44,663 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 13:08:44,663 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 13:08:44,663 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 13:08:44,664 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 13:08:44,668 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:44" (1/1) ... [2024-12-02 13:08:44,691 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:44" (1/1) ... [2024-12-02 13:08:44,744 INFO L138 Inliner]: procedures = 207, calls = 272, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1408 [2024-12-02 13:08:44,745 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 13:08:44,745 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 13:08:44,745 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 13:08:44,745 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 13:08:44,752 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:44" (1/1) ... [2024-12-02 13:08:44,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:44" (1/1) ... [2024-12-02 13:08:44,762 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:44" (1/1) ... [2024-12-02 13:08:44,815 INFO L175 MemorySlicer]: Split 254 memory accesses to 3 slices as follows [2, 218, 34]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 50, 4]. [2024-12-02 13:08:44,816 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:44" (1/1) ... [2024-12-02 13:08:44,816 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:44" (1/1) ... [2024-12-02 13:08:44,857 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:44" (1/1) ... [2024-12-02 13:08:44,860 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:44" (1/1) ... [2024-12-02 13:08:44,870 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:44" (1/1) ... [2024-12-02 13:08:44,876 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:44" (1/1) ... [2024-12-02 13:08:44,880 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:44" (1/1) ... [2024-12-02 13:08:44,890 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 13:08:44,890 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 13:08:44,891 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 13:08:44,891 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 13:08:44,892 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:44" (1/1) ... [2024-12-02 13:08:44,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:08:44,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:08:44,917 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 13:08:44,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 13:08:44,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-12-02 13:08:44,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-12-02 13:08:44,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-12-02 13:08:44,943 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-12-02 13:08:44,943 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-12-02 13:08:44,943 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-12-02 13:08:44,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 13:08:44,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 13:08:44,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 13:08:44,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 13:08:44,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 13:08:44,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 13:08:44,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 13:08:44,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 13:08:44,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 13:08:44,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 13:08:44,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 13:08:44,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 13:08:44,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 13:08:44,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 13:08:44,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 13:08:44,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 13:08:44,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 13:08:44,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 13:08:44,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 13:08:44,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 13:08:44,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 13:08:45,120 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 13:08:45,121 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 13:08:46,790 INFO L? ?]: Removed 320 outVars from TransFormulas that were not future-live. [2024-12-02 13:08:46,790 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 13:08:46,808 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 13:08:46,809 INFO L312 CfgBuilder]: Removed 36 assume(true) statements. [2024-12-02 13:08:46,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:08:46 BoogieIcfgContainer [2024-12-02 13:08:46,809 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 13:08:46,811 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 13:08:46,811 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 13:08:46,816 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 13:08:46,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:08:44" (1/3) ... [2024-12-02 13:08:46,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d3bf5cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:08:46, skipping insertion in model container [2024-12-02 13:08:46,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:44" (2/3) ... [2024-12-02 13:08:46,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d3bf5cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:08:46, skipping insertion in model container [2024-12-02 13:08:46,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:08:46" (3/3) ... [2024-12-02 13:08:46,818 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_BER_nondet_test2-2.i [2024-12-02 13:08:46,833 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 13:08:46,834 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_BER_nondet_test2-2.i that has 4 procedures, 413 locations, 1 initial locations, 38 loop locations, and 1 error locations. [2024-12-02 13:08:46,912 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 13:08:46,923 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;@5a52253a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 13:08:46,923 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 13:08:46,927 INFO L276 IsEmpty]: Start isEmpty. Operand has 405 states, 399 states have (on average 1.6140350877192982) internal successors, (644), 400 states have internal predecessors, (644), 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) [2024-12-02 13:08:46,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-12-02 13:08:46,933 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:08:46,933 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:08:46,934 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:08:46,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:08:46,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1885086492, now seen corresponding path program 1 times [2024-12-02 13:08:46,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:08:46,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72140098] [2024-12-02 13:08:46,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:46,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:08:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:47,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:08:47,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:08:47,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72140098] [2024-12-02 13:08:47,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72140098] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:08:47,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:08:47,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 13:08:47,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078210174] [2024-12-02 13:08:47,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:08:47,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 13:08:47,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:08:47,109 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 13:08:47,109 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 13:08:47,112 INFO L87 Difference]: Start difference. First operand has 405 states, 399 states have (on average 1.6140350877192982) internal successors, (644), 400 states have internal predecessors, (644), 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 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:08:47,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:08:47,164 INFO L93 Difference]: Finished difference Result 807 states and 1296 transitions. [2024-12-02 13:08:47,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 13:08:47,166 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-12-02 13:08:47,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:08:47,175 INFO L225 Difference]: With dead ends: 807 [2024-12-02 13:08:47,175 INFO L226 Difference]: Without dead ends: 367 [2024-12-02 13:08:47,179 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 13:08:47,182 INFO L435 NwaCegarLoop]: 582 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:08:47,183 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:08:47,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-12-02 13:08:47,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2024-12-02 13:08:47,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 362 states have (on average 1.4475138121546962) internal successors, (524), 362 states have internal predecessors, (524), 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) [2024-12-02 13:08:47,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 530 transitions. [2024-12-02 13:08:47,239 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 530 transitions. Word has length 11 [2024-12-02 13:08:47,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:08:47,239 INFO L471 AbstractCegarLoop]: Abstraction has 367 states and 530 transitions. [2024-12-02 13:08:47,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:08:47,240 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 530 transitions. [2024-12-02 13:08:47,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-12-02 13:08:47,243 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:08:47,243 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] [2024-12-02 13:08:47,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 13:08:47,244 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:08:47,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:08:47,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1376406264, now seen corresponding path program 1 times [2024-12-02 13:08:47,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:08:47,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470194553] [2024-12-02 13:08:47,245 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:47,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:08:47,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:47,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:08:47,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:08:47,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470194553] [2024-12-02 13:08:47,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470194553] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:08:47,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:08:47,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 13:08:47,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593874348] [2024-12-02 13:08:47,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:08:47,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:08:47,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:08:47,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:08:47,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:08:47,590 INFO L87 Difference]: Start difference. First operand 367 states and 530 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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) [2024-12-02 13:08:47,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:08:47,715 INFO L93 Difference]: Finished difference Result 484 states and 698 transitions. [2024-12-02 13:08:47,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:08:47,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 66 [2024-12-02 13:08:47,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:08:47,718 INFO L225 Difference]: With dead ends: 484 [2024-12-02 13:08:47,718 INFO L226 Difference]: Without dead ends: 324 [2024-12-02 13:08:47,718 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:08:47,719 INFO L435 NwaCegarLoop]: 427 mSDtfsCounter, 30 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:08:47,720 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1262 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:08:47,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-12-02 13:08:47,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2024-12-02 13:08:47,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 319 states have (on average 1.3981191222570533) internal successors, (446), 319 states have internal predecessors, (446), 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) [2024-12-02 13:08:47,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 452 transitions. [2024-12-02 13:08:47,737 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 452 transitions. Word has length 66 [2024-12-02 13:08:47,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:08:47,737 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 452 transitions. [2024-12-02 13:08:47,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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) [2024-12-02 13:08:47,738 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 452 transitions. [2024-12-02 13:08:47,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-12-02 13:08:47,740 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:08:47,740 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] [2024-12-02 13:08:47,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 13:08:47,740 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:08:47,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:08:47,741 INFO L85 PathProgramCache]: Analyzing trace with hash 491521940, now seen corresponding path program 1 times [2024-12-02 13:08:47,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:08:47,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549447831] [2024-12-02 13:08:47,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:47,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:08:47,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:48,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:08:48,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:08:48,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549447831] [2024-12-02 13:08:48,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549447831] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:08:48,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:08:48,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 13:08:48,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102172953] [2024-12-02 13:08:48,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:08:48,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 13:08:48,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:08:48,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 13:08:48,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:08:48,307 INFO L87 Difference]: Start difference. First operand 324 states and 452 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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) [2024-12-02 13:08:48,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:08:48,524 INFO L93 Difference]: Finished difference Result 760 states and 1056 transitions. [2024-12-02 13:08:48,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 13:08:48,525 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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 66 [2024-12-02 13:08:48,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:08:48,528 INFO L225 Difference]: With dead ends: 760 [2024-12-02 13:08:48,528 INFO L226 Difference]: Without dead ends: 640 [2024-12-02 13:08:48,529 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:08:48,530 INFO L435 NwaCegarLoop]: 433 mSDtfsCounter, 430 mSDsluCounter, 2147 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 2580 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:08:48,530 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 2580 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:08:48,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2024-12-02 13:08:48,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 326. [2024-12-02 13:08:48,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 321 states have (on average 1.395638629283489) internal successors, (448), 321 states have internal predecessors, (448), 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) [2024-12-02 13:08:48,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 454 transitions. [2024-12-02 13:08:48,549 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 454 transitions. Word has length 66 [2024-12-02 13:08:48,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:08:48,549 INFO L471 AbstractCegarLoop]: Abstraction has 326 states and 454 transitions. [2024-12-02 13:08:48,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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) [2024-12-02 13:08:48,549 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 454 transitions. [2024-12-02 13:08:48,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-12-02 13:08:48,554 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:08:48,554 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:08:48,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 13:08:48,555 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:08:48,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:08:48,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1887881346, now seen corresponding path program 1 times [2024-12-02 13:08:48,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:08:48,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491192677] [2024-12-02 13:08:48,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:48,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:08:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:48,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:08:48,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:08:48,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491192677] [2024-12-02 13:08:48,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491192677] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:08:48,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:08:48,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 13:08:48,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821277838] [2024-12-02 13:08:48,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:08:48,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:08:48,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:08:48,952 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:08:48,952 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:08:48,953 INFO L87 Difference]: Start difference. First operand 326 states and 454 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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) [2024-12-02 13:08:49,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:08:49,050 INFO L93 Difference]: Finished difference Result 604 states and 836 transitions. [2024-12-02 13:08:49,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:08:49,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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 143 [2024-12-02 13:08:49,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:08:49,053 INFO L225 Difference]: With dead ends: 604 [2024-12-02 13:08:49,053 INFO L226 Difference]: Without dead ends: 283 [2024-12-02 13:08:49,053 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:08:49,054 INFO L435 NwaCegarLoop]: 340 mSDtfsCounter, 36 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:08:49,054 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1006 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:08:49,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-12-02 13:08:49,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2024-12-02 13:08:49,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 278 states have (on average 1.330935251798561) internal successors, (370), 278 states have internal predecessors, (370), 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) [2024-12-02 13:08:49,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 376 transitions. [2024-12-02 13:08:49,064 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 376 transitions. Word has length 143 [2024-12-02 13:08:49,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:08:49,064 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 376 transitions. [2024-12-02 13:08:49,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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) [2024-12-02 13:08:49,064 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 376 transitions. [2024-12-02 13:08:49,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-12-02 13:08:49,066 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:08:49,066 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:08:49,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 13:08:49,067 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:08:49,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:08:49,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1628773910, now seen corresponding path program 1 times [2024-12-02 13:08:49,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:08:49,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332732219] [2024-12-02 13:08:49,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:49,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:08:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:49,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:08:49,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:08:49,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332732219] [2024-12-02 13:08:49,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332732219] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:08:49,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:08:49,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 13:08:49,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835336381] [2024-12-02 13:08:49,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:08:49,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:08:49,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:08:49,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:08:49,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:08:49,283 INFO L87 Difference]: Start difference. First operand 283 states and 376 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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) [2024-12-02 13:08:49,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:08:49,346 INFO L93 Difference]: Finished difference Result 555 states and 741 transitions. [2024-12-02 13:08:49,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:08:49,348 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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 143 [2024-12-02 13:08:49,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:08:49,349 INFO L225 Difference]: With dead ends: 555 [2024-12-02 13:08:49,349 INFO L226 Difference]: Without dead ends: 277 [2024-12-02 13:08:49,350 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:08:49,351 INFO L435 NwaCegarLoop]: 342 mSDtfsCounter, 9 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:08:49,351 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1007 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:08:49,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-12-02 13:08:49,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2024-12-02 13:08:49,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 272 states have (on average 1.3235294117647058) internal successors, (360), 272 states have internal predecessors, (360), 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) [2024-12-02 13:08:49,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 366 transitions. [2024-12-02 13:08:49,360 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 366 transitions. Word has length 143 [2024-12-02 13:08:49,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:08:49,360 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 366 transitions. [2024-12-02 13:08:49,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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) [2024-12-02 13:08:49,360 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 366 transitions. [2024-12-02 13:08:49,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-12-02 13:08:49,362 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:08:49,362 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:08:49,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 13:08:49,363 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:08:49,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:08:49,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1638022670, now seen corresponding path program 1 times [2024-12-02 13:08:49,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:08:49,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535237413] [2024-12-02 13:08:49,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:49,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:08:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:49,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:08:49,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:08:49,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535237413] [2024-12-02 13:08:49,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535237413] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:08:49,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:08:49,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:08:49,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600171668] [2024-12-02 13:08:49,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:08:49,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:08:49,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:08:49,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:08:49,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:08:49,582 INFO L87 Difference]: Start difference. First operand 277 states and 366 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2024-12-02 13:08:49,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:08:49,670 INFO L93 Difference]: Finished difference Result 726 states and 964 transitions. [2024-12-02 13:08:49,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:08:49,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 143 [2024-12-02 13:08:49,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:08:49,673 INFO L225 Difference]: With dead ends: 726 [2024-12-02 13:08:49,673 INFO L226 Difference]: Without dead ends: 454 [2024-12-02 13:08:49,674 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 [2024-12-02 13:08:49,674 INFO L435 NwaCegarLoop]: 468 mSDtfsCounter, 173 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:08:49,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 811 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:08:49,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2024-12-02 13:08:49,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 452. [2024-12-02 13:08:49,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 447 states have (on average 1.3288590604026846) internal successors, (594), 447 states have internal predecessors, (594), 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) [2024-12-02 13:08:49,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 600 transitions. [2024-12-02 13:08:49,691 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 600 transitions. Word has length 143 [2024-12-02 13:08:49,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:08:49,692 INFO L471 AbstractCegarLoop]: Abstraction has 452 states and 600 transitions. [2024-12-02 13:08:49,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2024-12-02 13:08:49,692 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 600 transitions. [2024-12-02 13:08:49,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-12-02 13:08:49,694 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:08:49,694 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:08:49,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 13:08:49,694 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:08:49,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:08:49,695 INFO L85 PathProgramCache]: Analyzing trace with hash 647659420, now seen corresponding path program 1 times [2024-12-02 13:08:49,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:08:49,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381010099] [2024-12-02 13:08:49,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:49,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:08:49,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:50,047 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:08:50,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:08:50,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381010099] [2024-12-02 13:08:50,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381010099] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:08:50,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:08:50,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:08:50,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209613539] [2024-12-02 13:08:50,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:08:50,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:08:50,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:08:50,049 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:08:50,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:08:50,050 INFO L87 Difference]: Start difference. First operand 452 states and 600 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 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) [2024-12-02 13:08:50,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:08:50,505 INFO L93 Difference]: Finished difference Result 900 states and 1196 transitions. [2024-12-02 13:08:50,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:08:50,506 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 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 158 [2024-12-02 13:08:50,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:08:50,509 INFO L225 Difference]: With dead ends: 900 [2024-12-02 13:08:50,509 INFO L226 Difference]: Without dead ends: 535 [2024-12-02 13:08:50,510 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:08:50,510 INFO L435 NwaCegarLoop]: 426 mSDtfsCounter, 988 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:08:50,511 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 965 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 13:08:50,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2024-12-02 13:08:50,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 359. [2024-12-02 13:08:50,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 354 states have (on average 1.3192090395480225) internal successors, (467), 354 states have internal predecessors, (467), 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) [2024-12-02 13:08:50,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 473 transitions. [2024-12-02 13:08:50,532 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 473 transitions. Word has length 158 [2024-12-02 13:08:50,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:08:50,533 INFO L471 AbstractCegarLoop]: Abstraction has 359 states and 473 transitions. [2024-12-02 13:08:50,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 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) [2024-12-02 13:08:50,533 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 473 transitions. [2024-12-02 13:08:50,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-12-02 13:08:50,535 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:08:50,535 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:08:50,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 13:08:50,535 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:08:50,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:08:50,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1953349212, now seen corresponding path program 1 times [2024-12-02 13:08:50,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:08:50,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52152491] [2024-12-02 13:08:50,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:50,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:08:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:51,130 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 13:08:51,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:08:51,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52152491] [2024-12-02 13:08:51,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52152491] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:08:51,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987298514] [2024-12-02 13:08:51,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:51,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:08:51,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:08:51,132 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:08:51,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 13:08:51,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:51,530 INFO L256 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 13:08:51,539 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:08:51,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-02 13:08:52,348 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 13:08:52,349 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:08:52,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987298514] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:08:52,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:08:52,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2024-12-02 13:08:52,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774041941] [2024-12-02 13:08:52,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:08:52,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 13:08:52,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:08:52,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 13:08:52,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-12-02 13:08:52,351 INFO L87 Difference]: Start difference. First operand 359 states and 473 transitions. Second operand has 10 states, 10 states have (on average 16.0) internal successors, (160), 10 states have internal predecessors, (160), 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) [2024-12-02 13:08:53,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:08:53,302 INFO L93 Difference]: Finished difference Result 662 states and 872 transitions. [2024-12-02 13:08:53,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 13:08:53,303 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.0) internal successors, (160), 10 states have internal predecessors, (160), 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 168 [2024-12-02 13:08:53,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:08:53,305 INFO L225 Difference]: With dead ends: 662 [2024-12-02 13:08:53,305 INFO L226 Difference]: Without dead ends: 545 [2024-12-02 13:08:53,306 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-12-02 13:08:53,307 INFO L435 NwaCegarLoop]: 356 mSDtfsCounter, 357 mSDsluCounter, 1704 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 2060 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 13:08:53,307 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 2060 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 13:08:53,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2024-12-02 13:08:53,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 396. [2024-12-02 13:08:53,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 391 states have (on average 1.29923273657289) internal successors, (508), 391 states have internal predecessors, (508), 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) [2024-12-02 13:08:53,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 514 transitions. [2024-12-02 13:08:53,327 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 514 transitions. Word has length 168 [2024-12-02 13:08:53,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:08:53,327 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 514 transitions. [2024-12-02 13:08:53,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.0) internal successors, (160), 10 states have internal predecessors, (160), 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) [2024-12-02 13:08:53,327 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 514 transitions. [2024-12-02 13:08:53,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-12-02 13:08:53,329 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:08:53,329 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:08:53,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 13:08:53,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:08:53,530 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:08:53,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:08:53,531 INFO L85 PathProgramCache]: Analyzing trace with hash 832123320, now seen corresponding path program 1 times [2024-12-02 13:08:53,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:08:53,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884656636] [2024-12-02 13:08:53,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:53,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:08:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:54,085 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 13:08:54,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:08:54,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884656636] [2024-12-02 13:08:54,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884656636] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:08:54,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26859129] [2024-12-02 13:08:54,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:54,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:08:54,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:08:54,088 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:08:54,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 13:08:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:54,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-12-02 13:08:54,494 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:08:54,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-02 13:08:54,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2024-12-02 13:08:54,920 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 13:08:54,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 55 [2024-12-02 13:08:55,117 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:08:55,117 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:08:55,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26859129] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:08:55,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:08:55,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4] total 13 [2024-12-02 13:08:55,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191618247] [2024-12-02 13:08:55,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:08:55,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:08:55,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:08:55,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:08:55,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-12-02 13:08:55,119 INFO L87 Difference]: Start difference. First operand 396 states and 514 transitions. Second operand has 11 states, 11 states have (on average 14.727272727272727) internal successors, (162), 11 states have internal predecessors, (162), 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) [2024-12-02 13:08:56,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:08:56,275 INFO L93 Difference]: Finished difference Result 887 states and 1172 transitions. [2024-12-02 13:08:56,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:08:56,275 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.727272727272727) internal successors, (162), 11 states have internal predecessors, (162), 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 169 [2024-12-02 13:08:56,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:08:56,277 INFO L225 Difference]: With dead ends: 887 [2024-12-02 13:08:56,277 INFO L226 Difference]: Without dead ends: 531 [2024-12-02 13:08:56,278 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2024-12-02 13:08:56,279 INFO L435 NwaCegarLoop]: 331 mSDtfsCounter, 436 mSDsluCounter, 1638 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 1969 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 13:08:56,279 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 1969 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 13:08:56,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2024-12-02 13:08:56,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 396. [2024-12-02 13:08:56,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 391 states have (on average 1.2966751918158568) internal successors, (507), 391 states have internal predecessors, (507), 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) [2024-12-02 13:08:56,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 513 transitions. [2024-12-02 13:08:56,297 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 513 transitions. Word has length 169 [2024-12-02 13:08:56,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:08:56,297 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 513 transitions. [2024-12-02 13:08:56,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.727272727272727) internal successors, (162), 11 states have internal predecessors, (162), 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) [2024-12-02 13:08:56,297 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 513 transitions. [2024-12-02 13:08:56,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-12-02 13:08:56,298 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:08:56,299 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:08:56,306 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 13:08:56,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:08:56,499 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:08:56,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:08:56,500 INFO L85 PathProgramCache]: Analyzing trace with hash 352293317, now seen corresponding path program 1 times [2024-12-02 13:08:56,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:08:56,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81921118] [2024-12-02 13:08:56,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:56,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:08:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:56,897 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 13:08:56,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:08:56,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81921118] [2024-12-02 13:08:56,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81921118] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:08:56,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051025231] [2024-12-02 13:08:56,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:56,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:08:56,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:08:56,899 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:08:56,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 13:08:57,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:57,539 INFO L256 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-12-02 13:08:57,544 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:09:28,065 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:09:40,077 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:09:45,949 WARN L286 SmtUtils]: Spent 5.78s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:09:57,959 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:10:13,944 WARN L286 SmtUtils]: Spent 7.63s on a formula simplification. DAG size of input: 34 DAG size of output: 1 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:10:25,952 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:10:37,968 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:10:49,983 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:11:06,813 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:11:13,078 WARN L286 SmtUtils]: Spent 6.26s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:11:28,380 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:11:33,954 WARN L286 SmtUtils]: Spent 5.57s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:11:45,968 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:11:58,150 WARN L286 SmtUtils]: Spent 7.47s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:12:27,622 WARN L286 SmtUtils]: Spent 10.92s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:12:39,636 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:12:47,779 WARN L286 SmtUtils]: Spent 8.14s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:13:12,376 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:13:24,389 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:13:29,770 WARN L286 SmtUtils]: Spent 5.38s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:13:44,627 WARN L286 SmtUtils]: Spent 10.63s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:13:52,640 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:14:04,666 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:14:16,679 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:14:28,691 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:14:40,702 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:14:48,182 WARN L286 SmtUtils]: Spent 7.46s on a formula simplification. DAG size of input: 7 DAG size of output: 1 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:14:58,090 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:15:14,515 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:15:26,541 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:15:46,755 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:15:54,763 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:16:02,769 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:16:10,777 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:16:22,787 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:16:30,800 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:16:38,810 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:16:49,425 WARN L286 SmtUtils]: Spent 10.62s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:17:01,442 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:17:09,457 WARN L851 $PredicateComparison]: unable to prove that (exists ((v_y_34 Int) (v_y_25 Int) (v_z_16 Int) (v_y_28 Int) (v_z_19 Int) (v_z_43 Int) (v_y_43 Int)) (let ((.cse7 (mod (+ (* 16777215 |c_ULTIMATE.start_main_~_ha_hashv~0#1|) (* v_z_19 16776960) 14384614 (* 16711680 v_z_16)) 16777216))) (let ((.cse11 (* 16777215 .cse7))) (let ((.cse5 (* v_y_43 16777216)) (.cse10 (* v_y_34 4294967296)) (.cse6 (mod (+ (* 4294967295 |c_ULTIMATE.start_main_~_ha_hashv~0#1|) 4276993779) 4294967296)) (.cse4 (div (+ (* v_z_19 (- 256)) .cse11 (* v_z_16 (- 65536)) (- 562941365879322) (* (- 1) |c_ULTIMATE.start_main_~_ha_hashv~0#1|)) 16777216)) (.cse0 (* v_y_28 256)) (.cse1 (* v_z_43 255)) (.cse2 (* v_y_43 4294967295)) (.cse3 (* v_y_34 256)) (.cse9 (+ .cse11 (* v_z_43 16777215))) (.cse8 (* v_y_25 16777216))) (and (<= (+ .cse0 .cse1 v_y_25 .cse2 .cse3) .cse4) (<= (+ v_z_43 .cse5) 4294967295) (<= 4294967296 (+ .cse6 v_z_43 .cse5)) (<= 16777216 (+ v_z_43 .cse7)) (<= v_z_19 255) (<= (+ 562949919866625 .cse8) .cse9) (<= v_z_16 255) (<= v_z_43 16777215) (= (+ (mod (+ 2690382803 |c_ULTIMATE.start_main_~_ha_hashv~0#1|) 4294967296) (* v_z_43 4294967295) .cse10 (* 72057594021150720 v_y_43)) 4294967296) (<= 0 v_z_19) (<= 0 v_z_16) (= (+ 1099511627776 (* v_y_43 72057589726183424) (* v_y_28 4294967296) .cse10 (* v_z_43 4294967039)) (* .cse6 256)) (<= .cse4 (+ .cse0 .cse1 v_y_25 255 .cse2 .cse3)) (<= .cse9 (+ 562949919866880 .cse8))))))) is different from false [2024-12-02 13:17:09,504 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:17:09,504 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:17:09,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051025231] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:17:09,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:17:09,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [4] total 15 [2024-12-02 13:17:09,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440590296] [2024-12-02 13:17:09,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:17:09,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 13:17:09,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:17:09,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 13:17:09,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=148, Unknown=5, NotChecked=24, Total=210 [2024-12-02 13:17:09,505 INFO L87 Difference]: Start difference. First operand 396 states and 513 transitions. Second operand has 13 states, 13 states have (on average 12.538461538461538) internal successors, (163), 13 states have internal predecessors, (163), 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) [2024-12-02 13:17:12,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.54s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 13:17:16,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 13:17:18,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 13:17:21,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.66s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 13:17:23,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.64s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 13:17:26,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.98s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 13:17:29,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.74s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 13:17:32,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.86s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 13:17:35,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.65s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 13:17:37,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.72s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 13:17:40,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.72s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 13:17:43,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.78s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 13:17:46,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.84s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 13:17:49,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.86s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 13:17:51,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.82s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 13:17:55,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.49s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 13:17:58,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 13:18:02,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 13:18:05,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.35s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 13:18:09,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 13:18:13,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 13:18:17,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 13:18:21,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 13:18:25,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 13:18:29,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 13:18:34,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 13:18:38,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 13:18:42,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 13:18:46,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 13:18:51,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 13:18:55,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 13:18:55,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:18:55,919 INFO L93 Difference]: Finished difference Result 752 states and 984 transitions. [2024-12-02 13:18:55,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 13:18:55,920 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.538461538461538) internal successors, (163), 13 states have internal predecessors, (163), 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 170 [2024-12-02 13:18:55,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:18:55,923 INFO L225 Difference]: With dead ends: 752 [2024-12-02 13:18:55,923 INFO L226 Difference]: Without dead ends: 396 [2024-12-02 13:18:55,924 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=33, Invalid=148, Unknown=5, NotChecked=24, Total=210 [2024-12-02 13:18:55,924 INFO L435 NwaCegarLoop]: 344 mSDtfsCounter, 2 mSDsluCounter, 2886 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 1 mSolverCounterUnsat, 31 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 106.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3230 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 31 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 106.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:18:55,924 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3230 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 851 Invalid, 31 Unknown, 80 Unchecked, 106.4s Time] [2024-12-02 13:18:55,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-12-02 13:18:55,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 396. [2024-12-02 13:18:55,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 391 states have (on average 1.2915601023017902) internal successors, (505), 391 states have internal predecessors, (505), 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) [2024-12-02 13:18:55,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 511 transitions. [2024-12-02 13:18:55,946 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 511 transitions. Word has length 170 [2024-12-02 13:18:55,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:18:55,946 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 511 transitions. [2024-12-02 13:18:55,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.538461538461538) internal successors, (163), 13 states have internal predecessors, (163), 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) [2024-12-02 13:18:55,947 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 511 transitions. [2024-12-02 13:18:55,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-12-02 13:18:55,949 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:18:55,949 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:18:55,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 13:18:56,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-02 13:18:56,150 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:18:56,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:18:56,150 INFO L85 PathProgramCache]: Analyzing trace with hash -728868643, now seen corresponding path program 1 times [2024-12-02 13:18:56,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:18:56,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333738665] [2024-12-02 13:18:56,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:18:56,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:18:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:18:56,572 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:18:56,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:18:56,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333738665] [2024-12-02 13:18:56,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333738665] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:18:56,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:18:56,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 13:18:56,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069831270] [2024-12-02 13:18:56,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:18:56,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 13:18:56,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:18:56,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 13:18:56,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:18:56,574 INFO L87 Difference]: Start difference. First operand 396 states and 511 transitions. Second operand has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 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) [2024-12-02 13:18:56,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:18:56,890 INFO L93 Difference]: Finished difference Result 755 states and 986 transitions. [2024-12-02 13:18:56,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 13:18:56,891 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 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 171 [2024-12-02 13:18:56,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:18:56,893 INFO L225 Difference]: With dead ends: 755 [2024-12-02 13:18:56,893 INFO L226 Difference]: Without dead ends: 402 [2024-12-02 13:18:56,894 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:18:56,894 INFO L435 NwaCegarLoop]: 346 mSDtfsCounter, 4 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:18:56,894 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1438 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 13:18:56,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2024-12-02 13:18:56,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 402. [2024-12-02 13:18:56,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 397 states have (on average 1.2871536523929472) internal successors, (511), 397 states have internal predecessors, (511), 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) [2024-12-02 13:18:56,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 517 transitions. [2024-12-02 13:18:56,912 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 517 transitions. Word has length 171 [2024-12-02 13:18:56,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:18:56,912 INFO L471 AbstractCegarLoop]: Abstraction has 402 states and 517 transitions. [2024-12-02 13:18:56,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 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) [2024-12-02 13:18:56,913 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 517 transitions. [2024-12-02 13:18:56,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-12-02 13:18:56,914 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:18:56,915 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:18:56,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 13:18:56,915 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:18:56,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:18:56,915 INFO L85 PathProgramCache]: Analyzing trace with hash 2000822700, now seen corresponding path program 1 times [2024-12-02 13:18:56,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:18:56,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062959668] [2024-12-02 13:18:56,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:18:56,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:18:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:18:57,268 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:18:57,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:18:57,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062959668] [2024-12-02 13:18:57,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062959668] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:18:57,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:18:57,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 13:18:57,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904414810] [2024-12-02 13:18:57,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:18:57,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 13:18:57,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:18:57,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 13:18:57,269 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:18:57,269 INFO L87 Difference]: Start difference. First operand 402 states and 517 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 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) [2024-12-02 13:18:57,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:18:57,632 INFO L93 Difference]: Finished difference Result 761 states and 990 transitions. [2024-12-02 13:18:57,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 13:18:57,633 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 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 172 [2024-12-02 13:18:57,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:18:57,635 INFO L225 Difference]: With dead ends: 761 [2024-12-02 13:18:57,635 INFO L226 Difference]: Without dead ends: 412 [2024-12-02 13:18:57,636 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 [2024-12-02 13:18:57,636 INFO L435 NwaCegarLoop]: 336 mSDtfsCounter, 8 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:18:57,637 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1700 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 13:18:57,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2024-12-02 13:18:57,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 410. [2024-12-02 13:18:57,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 405 states have (on average 1.2864197530864196) internal successors, (521), 405 states have internal predecessors, (521), 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) [2024-12-02 13:18:57,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 527 transitions. [2024-12-02 13:18:57,654 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 527 transitions. Word has length 172 [2024-12-02 13:18:57,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:18:57,654 INFO L471 AbstractCegarLoop]: Abstraction has 410 states and 527 transitions. [2024-12-02 13:18:57,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 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) [2024-12-02 13:18:57,654 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 527 transitions. [2024-12-02 13:18:57,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-12-02 13:18:57,656 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:18:57,656 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:18:57,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 13:18:57,657 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:18:57,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:18:57,657 INFO L85 PathProgramCache]: Analyzing trace with hash 660048712, now seen corresponding path program 1 times [2024-12-02 13:18:57,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:18:57,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639188316] [2024-12-02 13:18:57,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:18:57,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:18:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:18:58,046 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 13:18:58,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:18:58,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639188316] [2024-12-02 13:18:58,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639188316] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:18:58,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162794039] [2024-12-02 13:18:58,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:18:58,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:18:58,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:18:58,049 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:18:58,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 13:18:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:18:58,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 13:18:58,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:18:58,641 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 13:18:58,641 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:18:58,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162794039] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:18:58,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:18:58,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2024-12-02 13:18:58,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608701370] [2024-12-02 13:18:58,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:18:58,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 13:18:58,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:18:58,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 13:18:58,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 13:18:58,643 INFO L87 Difference]: Start difference. First operand 410 states and 527 transitions. Second operand has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 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) [2024-12-02 13:18:58,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:18:58,924 INFO L93 Difference]: Finished difference Result 527 states and 683 transitions. [2024-12-02 13:18:58,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 13:18:58,925 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 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 172 [2024-12-02 13:18:58,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:18:58,928 INFO L225 Difference]: With dead ends: 527 [2024-12-02 13:18:58,928 INFO L226 Difference]: Without dead ends: 410 [2024-12-02 13:18:58,928 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 13:18:58,929 INFO L435 NwaCegarLoop]: 337 mSDtfsCounter, 30 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:18:58,929 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1431 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 13:18:58,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2024-12-02 13:18:58,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2024-12-02 13:18:58,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 405 states have (on average 1.2839506172839505) internal successors, (520), 405 states have internal predecessors, (520), 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) [2024-12-02 13:18:58,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 526 transitions. [2024-12-02 13:18:58,950 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 526 transitions. Word has length 172 [2024-12-02 13:18:58,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:18:58,950 INFO L471 AbstractCegarLoop]: Abstraction has 410 states and 526 transitions. [2024-12-02 13:18:58,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 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) [2024-12-02 13:18:58,950 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 526 transitions. [2024-12-02 13:18:58,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-12-02 13:18:58,952 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:18:58,952 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:18:58,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 13:18:59,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-12-02 13:18:59,153 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:18:59,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:18:59,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1038954257, now seen corresponding path program 1 times [2024-12-02 13:18:59,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:18:59,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010172391] [2024-12-02 13:18:59,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:18:59,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:18:59,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:18:59,498 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 13:18:59,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:18:59,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010172391] [2024-12-02 13:18:59,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010172391] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:18:59,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:18:59,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 13:18:59,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732106910] [2024-12-02 13:18:59,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:18:59,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 13:18:59,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:18:59,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 13:18:59,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:18:59,501 INFO L87 Difference]: Start difference. First operand 410 states and 526 transitions. Second operand has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 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) [2024-12-02 13:18:59,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:18:59,757 INFO L93 Difference]: Finished difference Result 530 states and 686 transitions. [2024-12-02 13:18:59,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 13:18:59,760 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 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 173 [2024-12-02 13:18:59,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:18:59,762 INFO L225 Difference]: With dead ends: 530 [2024-12-02 13:18:59,762 INFO L226 Difference]: Without dead ends: 413 [2024-12-02 13:18:59,763 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:18:59,763 INFO L435 NwaCegarLoop]: 345 mSDtfsCounter, 8 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:18:59,763 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1179 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 13:18:59,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2024-12-02 13:18:59,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2024-12-02 13:18:59,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 408 states have (on average 1.2818627450980393) internal successors, (523), 408 states have internal predecessors, (523), 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) [2024-12-02 13:18:59,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 529 transitions. [2024-12-02 13:18:59,782 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 529 transitions. Word has length 173 [2024-12-02 13:18:59,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:18:59,783 INFO L471 AbstractCegarLoop]: Abstraction has 413 states and 529 transitions. [2024-12-02 13:18:59,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 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) [2024-12-02 13:18:59,783 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 529 transitions. [2024-12-02 13:18:59,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-12-02 13:18:59,785 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:18:59,786 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:18:59,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 13:18:59,786 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:18:59,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:18:59,787 INFO L85 PathProgramCache]: Analyzing trace with hash -323517983, now seen corresponding path program 1 times [2024-12-02 13:18:59,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:18:59,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345639006] [2024-12-02 13:18:59,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:18:59,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:18:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:19:00,209 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 13:19:00,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:19:00,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345639006] [2024-12-02 13:19:00,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345639006] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:19:00,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:19:00,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 13:19:00,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557870216] [2024-12-02 13:19:00,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:19:00,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 13:19:00,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:19:00,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 13:19:00,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:19:00,211 INFO L87 Difference]: Start difference. First operand 413 states and 529 transitions. Second operand has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 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) [2024-12-02 13:19:00,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:19:00,608 INFO L93 Difference]: Finished difference Result 538 states and 695 transitions. [2024-12-02 13:19:00,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 13:19:00,609 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 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 174 [2024-12-02 13:19:00,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:19:00,610 INFO L225 Difference]: With dead ends: 538 [2024-12-02 13:19:00,610 INFO L226 Difference]: Without dead ends: 418 [2024-12-02 13:19:00,610 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 [2024-12-02 13:19:00,611 INFO L435 NwaCegarLoop]: 335 mSDtfsCounter, 12 mSDsluCounter, 1355 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:19:00,611 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1690 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 13:19:00,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2024-12-02 13:19:00,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 417. [2024-12-02 13:19:00,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 412 states have (on average 1.2815533980582525) internal successors, (528), 412 states have internal predecessors, (528), 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) [2024-12-02 13:19:00,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 534 transitions. [2024-12-02 13:19:00,629 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 534 transitions. Word has length 174 [2024-12-02 13:19:00,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:19:00,629 INFO L471 AbstractCegarLoop]: Abstraction has 417 states and 534 transitions. [2024-12-02 13:19:00,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 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) [2024-12-02 13:19:00,630 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 534 transitions. [2024-12-02 13:19:00,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-12-02 13:19:00,631 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:19:00,631 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:19:00,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 13:19:00,631 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:19:00,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:19:00,632 INFO L85 PathProgramCache]: Analyzing trace with hash -2078666043, now seen corresponding path program 1 times [2024-12-02 13:19:00,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:19:00,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218956091] [2024-12-02 13:19:00,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:19:00,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:19:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:19:01,032 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 13:19:01,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:19:01,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218956091] [2024-12-02 13:19:01,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218956091] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:19:01,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67384548] [2024-12-02 13:19:01,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:19:01,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:19:01,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:19:01,036 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:19:01,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 13:19:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:19:01,541 INFO L256 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 13:19:01,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:19:18,920 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:19:18,920 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:19:18,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67384548] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:19:18,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:19:18,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-12-02 13:19:18,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630485649] [2024-12-02 13:19:18,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:19:18,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 13:19:18,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:19:18,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 13:19:18,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:19:18,922 INFO L87 Difference]: Start difference. First operand 417 states and 534 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 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) [2024-12-02 13:19:21,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 13:19:21,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:19:21,795 INFO L93 Difference]: Finished difference Result 787 states and 1019 transitions. [2024-12-02 13:19:21,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 13:19:21,796 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 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 174 [2024-12-02 13:19:21,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:19:21,797 INFO L225 Difference]: With dead ends: 787 [2024-12-02 13:19:21,797 INFO L226 Difference]: Without dead ends: 427 [2024-12-02 13:19:21,798 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:19:21,799 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 8 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-12-02 13:19:21,799 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1701 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-12-02 13:19:21,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2024-12-02 13:19:21,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 417. [2024-12-02 13:19:21,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 412 states have (on average 1.2815533980582525) internal successors, (528), 412 states have internal predecessors, (528), 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) [2024-12-02 13:19:21,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 534 transitions. [2024-12-02 13:19:21,823 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 534 transitions. Word has length 174 [2024-12-02 13:19:21,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:19:21,824 INFO L471 AbstractCegarLoop]: Abstraction has 417 states and 534 transitions. [2024-12-02 13:19:21,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 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) [2024-12-02 13:19:21,824 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 534 transitions. [2024-12-02 13:19:21,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 13:19:21,826 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:19:21,826 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:19:21,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 13:19:22,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 13:19:22,026 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:19:22,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:19:22,027 INFO L85 PathProgramCache]: Analyzing trace with hash 33604454, now seen corresponding path program 1 times [2024-12-02 13:19:22,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:19:22,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695522853] [2024-12-02 13:19:22,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:19:22,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:19:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:19:22,397 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:19:22,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:19:22,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695522853] [2024-12-02 13:19:22,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695522853] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:19:22,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:19:22,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 13:19:22,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689962025] [2024-12-02 13:19:22,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:19:22,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 13:19:22,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:19:22,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 13:19:22,398 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:19:22,399 INFO L87 Difference]: Start difference. First operand 417 states and 534 transitions. Second operand has 9 states, 9 states have (on average 18.666666666666668) internal successors, (168), 9 states have internal predecessors, (168), 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) [2024-12-02 13:19:22,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:19:22,772 INFO L93 Difference]: Finished difference Result 792 states and 1023 transitions. [2024-12-02 13:19:22,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 13:19:22,773 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.666666666666668) internal successors, (168), 9 states have internal predecessors, (168), 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 175 [2024-12-02 13:19:22,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:19:22,776 INFO L225 Difference]: With dead ends: 792 [2024-12-02 13:19:22,776 INFO L226 Difference]: Without dead ends: 437 [2024-12-02 13:19:22,777 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:19:22,777 INFO L435 NwaCegarLoop]: 335 mSDtfsCounter, 16 mSDsluCounter, 1974 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 2309 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:19:22,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 2309 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 13:19:22,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2024-12-02 13:19:22,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 431. [2024-12-02 13:19:22,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 426 states have (on average 1.2816901408450705) internal successors, (546), 426 states have internal predecessors, (546), 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) [2024-12-02 13:19:22,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 552 transitions. [2024-12-02 13:19:22,788 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 552 transitions. Word has length 175 [2024-12-02 13:19:22,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:19:22,788 INFO L471 AbstractCegarLoop]: Abstraction has 431 states and 552 transitions. [2024-12-02 13:19:22,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.666666666666668) internal successors, (168), 9 states have internal predecessors, (168), 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) [2024-12-02 13:19:22,788 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 552 transitions. [2024-12-02 13:19:22,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 13:19:22,789 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:19:22,789 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:19:22,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 13:19:22,789 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:19:22,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:19:22,790 INFO L85 PathProgramCache]: Analyzing trace with hash 231580746, now seen corresponding path program 1 times [2024-12-02 13:19:22,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:19:22,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321000600] [2024-12-02 13:19:22,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:19:22,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:19:22,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:19:23,074 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 13:19:23,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:19:23,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321000600] [2024-12-02 13:19:23,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321000600] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:19:23,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136861037] [2024-12-02 13:19:23,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:19:23,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:19:23,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:19:23,076 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:19:23,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 13:19:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:19:23,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 13:19:23,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:19:23,600 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:19:23,600 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:19:23,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136861037] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:19:23,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:19:23,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-12-02 13:19:23,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106287442] [2024-12-02 13:19:23,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:19:23,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 13:19:23,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:19:23,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 13:19:23,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-12-02 13:19:23,602 INFO L87 Difference]: Start difference. First operand 431 states and 552 transitions. Second operand has 8 states, 8 states have (on average 21.0) internal successors, (168), 8 states have internal predecessors, (168), 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) [2024-12-02 13:19:24,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:19:24,111 INFO L93 Difference]: Finished difference Result 813 states and 1050 transitions. [2024-12-02 13:19:24,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 13:19:24,112 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.0) internal successors, (168), 8 states have internal predecessors, (168), 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 175 [2024-12-02 13:19:24,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:19:24,113 INFO L225 Difference]: With dead ends: 813 [2024-12-02 13:19:24,113 INFO L226 Difference]: Without dead ends: 451 [2024-12-02 13:19:24,113 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-12-02 13:19:24,113 INFO L435 NwaCegarLoop]: 345 mSDtfsCounter, 13 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 13:19:24,114 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1746 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 13:19:24,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2024-12-02 13:19:24,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 441. [2024-12-02 13:19:24,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 436 states have (on average 1.2798165137614679) internal successors, (558), 436 states have internal predecessors, (558), 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) [2024-12-02 13:19:24,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 564 transitions. [2024-12-02 13:19:24,124 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 564 transitions. Word has length 175 [2024-12-02 13:19:24,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:19:24,124 INFO L471 AbstractCegarLoop]: Abstraction has 441 states and 564 transitions. [2024-12-02 13:19:24,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.0) internal successors, (168), 8 states have internal predecessors, (168), 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) [2024-12-02 13:19:24,124 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 564 transitions. [2024-12-02 13:19:24,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-02 13:19:24,125 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:19:24,125 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:19:24,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 13:19:24,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 13:19:24,326 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:19:24,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:19:24,326 INFO L85 PathProgramCache]: Analyzing trace with hash -260471499, now seen corresponding path program 1 times [2024-12-02 13:19:24,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:19:24,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904924404] [2024-12-02 13:19:24,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:19:24,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:19:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:19:24,669 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:19:24,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:19:24,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904924404] [2024-12-02 13:19:24,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904924404] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:19:24,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:19:24,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:19:24,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658094844] [2024-12-02 13:19:24,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:19:24,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 13:19:24,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:19:24,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 13:19:24,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-02 13:19:24,671 INFO L87 Difference]: Start difference. First operand 441 states and 564 transitions. Second operand has 10 states, 10 states have (on average 16.9) internal successors, (169), 10 states have internal predecessors, (169), 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) [2024-12-02 13:19:25,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:19:25,115 INFO L93 Difference]: Finished difference Result 831 states and 1074 transitions. [2024-12-02 13:19:25,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 13:19:25,116 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.9) internal successors, (169), 10 states have internal predecessors, (169), 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 176 [2024-12-02 13:19:25,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:19:25,117 INFO L225 Difference]: With dead ends: 831 [2024-12-02 13:19:25,117 INFO L226 Difference]: Without dead ends: 459 [2024-12-02 13:19:25,117 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-12-02 13:19:25,117 INFO L435 NwaCegarLoop]: 342 mSDtfsCounter, 22 mSDsluCounter, 1699 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2041 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:19:25,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2041 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 13:19:25,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2024-12-02 13:19:25,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 447. [2024-12-02 13:19:25,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 442 states have (on average 1.2760180995475112) internal successors, (564), 442 states have internal predecessors, (564), 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) [2024-12-02 13:19:25,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 570 transitions. [2024-12-02 13:19:25,127 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 570 transitions. Word has length 176 [2024-12-02 13:19:25,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:19:25,128 INFO L471 AbstractCegarLoop]: Abstraction has 447 states and 570 transitions. [2024-12-02 13:19:25,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.9) internal successors, (169), 10 states have internal predecessors, (169), 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) [2024-12-02 13:19:25,128 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 570 transitions. [2024-12-02 13:19:25,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-02 13:19:25,129 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:19:25,129 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:19:25,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 13:19:25,129 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:19:25,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:19:25,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1581826257, now seen corresponding path program 1 times [2024-12-02 13:19:25,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:19:25,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771594065] [2024-12-02 13:19:25,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:19:25,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:19:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:19:25,359 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 13:19:25,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:19:25,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771594065] [2024-12-02 13:19:25,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771594065] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:19:25,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033130725] [2024-12-02 13:19:25,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:19:25,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:19:25,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:19:25,361 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:19:25,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 13:19:25,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:19:25,807 INFO L256 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-12-02 13:19:25,809 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:19:39,381 WARN L286 SmtUtils]: Spent 6.71s on a formula simplification. DAG size of input: 21 DAG size of output: 1 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:19:45,233 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:19:45,233 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:19:45,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033130725] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:19:45,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:19:45,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4] total 13 [2024-12-02 13:19:45,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867091583] [2024-12-02 13:19:45,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:19:45,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:19:45,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:19:45,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:19:45,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-12-02 13:19:45,234 INFO L87 Difference]: Start difference. First operand 447 states and 570 transitions. Second operand has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 11 states have internal predecessors, (169), 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) [2024-12-02 13:19:49,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.44s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 13:19:50,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 13:19:51,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:19:51,783 INFO L93 Difference]: Finished difference Result 822 states and 1056 transitions. [2024-12-02 13:19:51,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 13:19:51,784 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 11 states have internal predecessors, (169), 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 176 [2024-12-02 13:19:51,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:19:51,785 INFO L225 Difference]: With dead ends: 822 [2024-12-02 13:19:51,785 INFO L226 Difference]: Without dead ends: 447 [2024-12-02 13:19:51,786 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-12-02 13:19:51,786 INFO L435 NwaCegarLoop]: 340 mSDtfsCounter, 7 mSDsluCounter, 2458 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2798 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-12-02 13:19:51,786 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2798 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2024-12-02 13:19:51,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2024-12-02 13:19:51,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 443. [2024-12-02 13:19:51,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 438 states have (on average 1.273972602739726) internal successors, (558), 438 states have internal predecessors, (558), 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) [2024-12-02 13:19:51,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 564 transitions. [2024-12-02 13:19:51,799 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 564 transitions. Word has length 176 [2024-12-02 13:19:51,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:19:51,800 INFO L471 AbstractCegarLoop]: Abstraction has 443 states and 564 transitions. [2024-12-02 13:19:51,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 11 states have internal predecessors, (169), 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) [2024-12-02 13:19:51,800 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 564 transitions. [2024-12-02 13:19:51,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-02 13:19:51,800 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:19:51,800 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:19:51,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 13:19:52,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:19:52,001 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:19:52,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:19:52,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1899706287, now seen corresponding path program 1 times [2024-12-02 13:19:52,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:19:52,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461379034] [2024-12-02 13:19:52,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:19:52,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:19:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:19:52,288 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 13:19:52,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:19:52,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461379034] [2024-12-02 13:19:52,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461379034] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:19:52,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429786390] [2024-12-02 13:19:52,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:19:52,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:19:52,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:19:52,290 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:19:52,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 13:19:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:19:52,663 INFO L256 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 13:19:52,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:19:52,756 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:19:52,756 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:19:52,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429786390] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:19:52,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:19:52,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-12-02 13:19:52,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907133020] [2024-12-02 13:19:52,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:19:52,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 13:19:52,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:19:52,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 13:19:52,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:19:52,758 INFO L87 Difference]: Start difference. First operand 443 states and 564 transitions. Second operand has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 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) [2024-12-02 13:19:53,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:19:53,056 INFO L93 Difference]: Finished difference Result 821 states and 1056 transitions. [2024-12-02 13:19:53,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 13:19:53,057 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 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 176 [2024-12-02 13:19:53,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:19:53,058 INFO L225 Difference]: With dead ends: 821 [2024-12-02 13:19:53,058 INFO L226 Difference]: Without dead ends: 453 [2024-12-02 13:19:53,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:19:53,060 INFO L435 NwaCegarLoop]: 329 mSDtfsCounter, 31 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:19:53,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1712 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 13:19:53,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2024-12-02 13:19:53,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 447. [2024-12-02 13:19:53,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 442 states have (on average 1.2714932126696832) internal successors, (562), 442 states have internal predecessors, (562), 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) [2024-12-02 13:19:53,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 568 transitions. [2024-12-02 13:19:53,070 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 568 transitions. Word has length 176 [2024-12-02 13:19:53,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:19:53,070 INFO L471 AbstractCegarLoop]: Abstraction has 447 states and 568 transitions. [2024-12-02 13:19:53,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 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) [2024-12-02 13:19:53,070 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 568 transitions. [2024-12-02 13:19:53,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-02 13:19:53,071 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:19:53,071 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:19:53,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 13:19:53,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-12-02 13:19:53,271 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:19:53,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:19:53,272 INFO L85 PathProgramCache]: Analyzing trace with hash 509287274, now seen corresponding path program 1 times [2024-12-02 13:19:53,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:19:53,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447186435] [2024-12-02 13:19:53,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:19:53,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:19:53,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:19:53,564 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 13:19:53,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:19:53,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447186435] [2024-12-02 13:19:53,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447186435] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:19:53,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971902770] [2024-12-02 13:19:53,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:19:53,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:19:53,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:19:53,566 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:19:53,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 13:19:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:19:53,971 INFO L256 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 13:19:53,973 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:20:08,104 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 13:20:08,104 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:20:08,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971902770] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:20:08,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:20:08,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-12-02 13:20:08,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460633901] [2024-12-02 13:20:08,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:20:08,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 13:20:08,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:20:08,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 13:20:08,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:20:08,106 INFO L87 Difference]: Start difference. First operand 447 states and 568 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 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) [2024-12-02 13:20:12,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 13:20:14,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 13:20:15,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 13:20:16,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:20:16,883 INFO L93 Difference]: Finished difference Result 576 states and 739 transitions. [2024-12-02 13:20:16,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 13:20:16,884 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 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 176 [2024-12-02 13:20:16,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:20:16,886 INFO L225 Difference]: With dead ends: 576 [2024-12-02 13:20:16,886 INFO L226 Difference]: Without dead ends: 452 [2024-12-02 13:20:16,886 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:20:16,888 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 12 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2024-12-02 13:20:16,888 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1697 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 423 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2024-12-02 13:20:16,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2024-12-02 13:20:16,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 447. [2024-12-02 13:20:16,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 442 states have (on average 1.2714932126696832) internal successors, (562), 442 states have internal predecessors, (562), 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) [2024-12-02 13:20:16,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 568 transitions. [2024-12-02 13:20:16,901 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 568 transitions. Word has length 176 [2024-12-02 13:20:16,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:20:16,901 INFO L471 AbstractCegarLoop]: Abstraction has 447 states and 568 transitions. [2024-12-02 13:20:16,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 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) [2024-12-02 13:20:16,901 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 568 transitions. [2024-12-02 13:20:16,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-12-02 13:20:16,902 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:20:16,902 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:20:16,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 13:20:17,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:20:17,103 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:20:17,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:20:17,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1488689602, now seen corresponding path program 1 times [2024-12-02 13:20:17,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:20:17,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840049875] [2024-12-02 13:20:17,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:20:17,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:20:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:20:17,425 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 13:20:17,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:20:17,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840049875] [2024-12-02 13:20:17,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840049875] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:20:17,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:20:17,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 13:20:17,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825445179] [2024-12-02 13:20:17,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:20:17,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 13:20:17,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:20:17,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 13:20:17,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:20:17,427 INFO L87 Difference]: Start difference. First operand 447 states and 568 transitions. Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 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) [2024-12-02 13:20:17,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:20:17,810 INFO L93 Difference]: Finished difference Result 581 states and 745 transitions. [2024-12-02 13:20:17,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 13:20:17,810 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 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 177 [2024-12-02 13:20:17,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:20:17,812 INFO L225 Difference]: With dead ends: 581 [2024-12-02 13:20:17,812 INFO L226 Difference]: Without dead ends: 457 [2024-12-02 13:20:17,812 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:20:17,812 INFO L435 NwaCegarLoop]: 335 mSDtfsCounter, 20 mSDsluCounter, 1707 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2042 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:20:17,812 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2042 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 13:20:17,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2024-12-02 13:20:17,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 454. [2024-12-02 13:20:17,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 449 states have (on average 1.2717149220489978) internal successors, (571), 449 states have internal predecessors, (571), 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) [2024-12-02 13:20:17,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 577 transitions. [2024-12-02 13:20:17,823 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 577 transitions. Word has length 177 [2024-12-02 13:20:17,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:20:17,823 INFO L471 AbstractCegarLoop]: Abstraction has 454 states and 577 transitions. [2024-12-02 13:20:17,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 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) [2024-12-02 13:20:17,823 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 577 transitions. [2024-12-02 13:20:17,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-12-02 13:20:17,824 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:20:17,824 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:20:17,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 13:20:17,824 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:20:17,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:20:17,825 INFO L85 PathProgramCache]: Analyzing trace with hash -63704614, now seen corresponding path program 1 times [2024-12-02 13:20:17,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:20:17,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456033201] [2024-12-02 13:20:17,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:20:17,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:20:17,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:20:18,035 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 13:20:18,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:20:18,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456033201] [2024-12-02 13:20:18,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456033201] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:20:18,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309277894] [2024-12-02 13:20:18,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:20:18,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:20:18,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:20:18,038 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:20:18,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 13:20:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:20:18,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 13:20:18,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:20:18,503 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:20:18,503 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:20:18,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309277894] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:20:18,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:20:18,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-12-02 13:20:18,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967200874] [2024-12-02 13:20:18,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:20:18,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:20:18,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:20:18,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:20:18,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:20:18,504 INFO L87 Difference]: Start difference. First operand 454 states and 577 transitions. Second operand has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-02 13:20:18,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:20:18,533 INFO L93 Difference]: Finished difference Result 799 states and 1019 transitions. [2024-12-02 13:20:18,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:20:18,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 177 [2024-12-02 13:20:18,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:20:18,537 INFO L225 Difference]: With dead ends: 799 [2024-12-02 13:20:18,537 INFO L226 Difference]: Without dead ends: 457 [2024-12-02 13:20:18,538 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:20:18,538 INFO L435 NwaCegarLoop]: 352 mSDtfsCounter, 0 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:20:18,539 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1052 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:20:18,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2024-12-02 13:20:18,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 457. [2024-12-02 13:20:18,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 451 states have (on average 1.2727272727272727) internal successors, (574), 452 states have internal predecessors, (574), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-02 13:20:18,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 581 transitions. [2024-12-02 13:20:18,559 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 581 transitions. Word has length 177 [2024-12-02 13:20:18,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:20:18,559 INFO L471 AbstractCegarLoop]: Abstraction has 457 states and 581 transitions. [2024-12-02 13:20:18,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-02 13:20:18,559 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 581 transitions. [2024-12-02 13:20:18,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-12-02 13:20:18,561 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:20:18,561 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:20:18,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 13:20:18,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:20:18,762 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:20:18,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:20:18,762 INFO L85 PathProgramCache]: Analyzing trace with hash -2007562632, now seen corresponding path program 1 times [2024-12-02 13:20:18,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:20:18,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190750219] [2024-12-02 13:20:18,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:20:18,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:20:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:20:19,165 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 13:20:19,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:20:19,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190750219] [2024-12-02 13:20:19,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190750219] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:20:19,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143266162] [2024-12-02 13:20:19,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:20:19,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:20:19,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:20:19,167 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:20:19,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 13:20:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:20:19,617 INFO L256 TraceCheckSpWp]: Trace formula consists of 792 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 13:20:19,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:20:19,756 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 13:20:19,756 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:20:19,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143266162] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:20:19,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:20:19,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2024-12-02 13:20:19,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499295570] [2024-12-02 13:20:19,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:20:19,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 13:20:19,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:20:19,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 13:20:19,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:20:19,757 INFO L87 Difference]: Start difference. First operand 457 states and 581 transitions. Second operand has 8 states, 8 states have (on average 21.25) internal successors, (170), 8 states have internal predecessors, (170), 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) [2024-12-02 13:20:20,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:20:20,130 INFO L93 Difference]: Finished difference Result 602 states and 771 transitions. [2024-12-02 13:20:20,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 13:20:20,130 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.25) internal successors, (170), 8 states have internal predecessors, (170), 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 179 [2024-12-02 13:20:20,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:20:20,132 INFO L225 Difference]: With dead ends: 602 [2024-12-02 13:20:20,132 INFO L226 Difference]: Without dead ends: 471 [2024-12-02 13:20:20,132 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-12-02 13:20:20,133 INFO L435 NwaCegarLoop]: 343 mSDtfsCounter, 41 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:20:20,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 1758 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 13:20:20,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2024-12-02 13:20:20,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 462. [2024-12-02 13:20:20,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 456 states have (on average 1.2719298245614035) internal successors, (580), 457 states have internal predecessors, (580), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-02 13:20:20,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 587 transitions. [2024-12-02 13:20:20,146 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 587 transitions. Word has length 179 [2024-12-02 13:20:20,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:20:20,146 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 587 transitions. [2024-12-02 13:20:20,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.25) internal successors, (170), 8 states have internal predecessors, (170), 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) [2024-12-02 13:20:20,147 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 587 transitions. [2024-12-02 13:20:20,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-12-02 13:20:20,148 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:20:20,148 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:20:20,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-12-02 13:20:20,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:20:20,349 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:20:20,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:20:20,349 INFO L85 PathProgramCache]: Analyzing trace with hash 532062396, now seen corresponding path program 1 times [2024-12-02 13:20:20,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:20:20,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381113320] [2024-12-02 13:20:20,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:20:20,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:20:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:20:20,749 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 13:20:20,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:20:20,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381113320] [2024-12-02 13:20:20,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381113320] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:20:20,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:20:20,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:20:20,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573782458] [2024-12-02 13:20:20,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:20:20,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 13:20:20,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:20:20,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 13:20:20,750 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-02 13:20:20,751 INFO L87 Difference]: Start difference. First operand 462 states and 587 transitions. Second operand has 10 states, 10 states have (on average 17.1) internal successors, (171), 10 states have internal predecessors, (171), 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) [2024-12-02 13:20:21,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:20:21,222 INFO L93 Difference]: Finished difference Result 607 states and 779 transitions. [2024-12-02 13:20:21,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 13:20:21,222 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.1) internal successors, (171), 10 states have internal predecessors, (171), 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 180 [2024-12-02 13:20:21,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:20:21,224 INFO L225 Difference]: With dead ends: 607 [2024-12-02 13:20:21,224 INFO L226 Difference]: Without dead ends: 471 [2024-12-02 13:20:21,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-12-02 13:20:21,224 INFO L435 NwaCegarLoop]: 342 mSDtfsCounter, 26 mSDsluCounter, 1950 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2292 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:20:21,224 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2292 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 13:20:21,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2024-12-02 13:20:21,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 465. [2024-12-02 13:20:21,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 459 states have (on average 1.2701525054466232) internal successors, (583), 460 states have internal predecessors, (583), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-02 13:20:21,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 590 transitions. [2024-12-02 13:20:21,236 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 590 transitions. Word has length 180 [2024-12-02 13:20:21,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:20:21,236 INFO L471 AbstractCegarLoop]: Abstraction has 465 states and 590 transitions. [2024-12-02 13:20:21,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.1) internal successors, (171), 10 states have internal predecessors, (171), 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) [2024-12-02 13:20:21,236 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 590 transitions. [2024-12-02 13:20:21,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-12-02 13:20:21,237 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:20:21,237 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:20:21,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 13:20:21,238 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:20:21,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:20:21,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1756924064, now seen corresponding path program 1 times [2024-12-02 13:20:21,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:20:21,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275079592] [2024-12-02 13:20:21,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:20:21,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:20:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:20:21,558 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 13:20:21,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:20:21,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275079592] [2024-12-02 13:20:21,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275079592] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:20:21,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801274657] [2024-12-02 13:20:21,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:20:21,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:20:21,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:20:21,560 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:20:21,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 13:20:22,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:20:22,094 INFO L256 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 13:20:22,097 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:20:22,122 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 13:20:22,122 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:20:22,179 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 13:20:22,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801274657] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:20:22,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:20:22,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-12-02 13:20:22,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544255663] [2024-12-02 13:20:22,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:20:22,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 13:20:22,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:20:22,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 13:20:22,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:20:22,180 INFO L87 Difference]: Start difference. First operand 465 states and 590 transitions. Second operand has 9 states, 9 states have (on average 20.666666666666668) internal successors, (186), 9 states have internal predecessors, (186), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 13:20:22,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:20:22,276 INFO L93 Difference]: Finished difference Result 829 states and 1058 transitions. [2024-12-02 13:20:22,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 13:20:22,276 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.666666666666668) internal successors, (186), 9 states have internal predecessors, (186), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 180 [2024-12-02 13:20:22,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:20:22,278 INFO L225 Difference]: With dead ends: 829 [2024-12-02 13:20:22,278 INFO L226 Difference]: Without dead ends: 476 [2024-12-02 13:20:22,278 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=77, Unknown=0, NotChecked=0, Total=132 [2024-12-02 13:20:22,279 INFO L435 NwaCegarLoop]: 352 mSDtfsCounter, 4 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:20:22,279 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1749 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:20:22,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2024-12-02 13:20:22,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 474. [2024-12-02 13:20:22,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 467 states have (on average 1.278372591006424) internal successors, (597), 468 states have internal predecessors, (597), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-02 13:20:22,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 604 transitions. [2024-12-02 13:20:22,297 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 604 transitions. Word has length 180 [2024-12-02 13:20:22,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:20:22,298 INFO L471 AbstractCegarLoop]: Abstraction has 474 states and 604 transitions. [2024-12-02 13:20:22,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.666666666666668) internal successors, (186), 9 states have internal predecessors, (186), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 13:20:22,298 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 604 transitions. [2024-12-02 13:20:22,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-12-02 13:20:22,299 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:20:22,299 INFO L218 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:20:22,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 13:20:22,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 13:20:22,500 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:20:22,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:20:22,500 INFO L85 PathProgramCache]: Analyzing trace with hash 726998398, now seen corresponding path program 2 times [2024-12-02 13:20:22,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:20:22,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154120128] [2024-12-02 13:20:22,500 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 13:20:22,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:20:22,566 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 13:20:22,566 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:20:22,800 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 13:20:22,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:20:22,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154120128] [2024-12-02 13:20:22,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154120128] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:20:22,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:20:22,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 13:20:22,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750374769] [2024-12-02 13:20:22,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:20:22,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 13:20:22,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:20:22,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 13:20:22,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 13:20:22,801 INFO L87 Difference]: Start difference. First operand 474 states and 604 transitions. Second operand has 8 states, 8 states have (on average 21.375) internal successors, (171), 8 states have internal predecessors, (171), 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) [2024-12-02 13:20:23,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:20:23,319 INFO L93 Difference]: Finished difference Result 624 states and 801 transitions. [2024-12-02 13:20:23,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 13:20:23,320 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.375) internal successors, (171), 8 states have internal predecessors, (171), 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 184 [2024-12-02 13:20:23,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:20:23,321 INFO L225 Difference]: With dead ends: 624 [2024-12-02 13:20:23,321 INFO L226 Difference]: Without dead ends: 485 [2024-12-02 13:20:23,322 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:20:23,322 INFO L435 NwaCegarLoop]: 346 mSDtfsCounter, 24 mSDsluCounter, 1719 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 2065 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 13:20:23,322 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 2065 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 13:20:23,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2024-12-02 13:20:23,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 475. [2024-12-02 13:20:23,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 468 states have (on average 1.2777777777777777) internal successors, (598), 469 states have internal predecessors, (598), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-02 13:20:23,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 605 transitions. [2024-12-02 13:20:23,335 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 605 transitions. Word has length 184 [2024-12-02 13:20:23,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:20:23,335 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 605 transitions. [2024-12-02 13:20:23,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.375) internal successors, (171), 8 states have internal predecessors, (171), 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) [2024-12-02 13:20:23,336 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 605 transitions. [2024-12-02 13:20:23,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-12-02 13:20:23,336 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:20:23,337 INFO L218 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:20:23,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-02 13:20:23,337 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:20:23,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:20:23,337 INFO L85 PathProgramCache]: Analyzing trace with hash 530580990, now seen corresponding path program 1 times [2024-12-02 13:20:23,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:20:23,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231891577] [2024-12-02 13:20:23,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:20:23,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:20:23,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:20:23,821 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:20:23,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:20:23,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231891577] [2024-12-02 13:20:23,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231891577] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:20:23,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777595658] [2024-12-02 13:20:23,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:20:23,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:20:23,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:20:23,823 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:20:23,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 13:20:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:20:24,338 INFO L256 TraceCheckSpWp]: Trace formula consists of 853 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 13:20:24,341 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:20:24,452 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 13:20:24,452 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:20:24,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777595658] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:20:24,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:20:24,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2024-12-02 13:20:24,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049685788] [2024-12-02 13:20:24,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:20:24,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 13:20:24,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:20:24,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 13:20:24,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-12-02 13:20:24,454 INFO L87 Difference]: Start difference. First operand 475 states and 605 transitions. Second operand has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 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) [2024-12-02 13:20:24,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:20:24,748 INFO L93 Difference]: Finished difference Result 624 states and 799 transitions. [2024-12-02 13:20:24,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 13:20:24,749 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 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 184 [2024-12-02 13:20:24,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:20:24,750 INFO L225 Difference]: With dead ends: 624 [2024-12-02 13:20:24,750 INFO L226 Difference]: Without dead ends: 484 [2024-12-02 13:20:24,751 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-12-02 13:20:24,751 INFO L435 NwaCegarLoop]: 330 mSDtfsCounter, 40 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:20:24,751 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 1708 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 13:20:24,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2024-12-02 13:20:24,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 477. [2024-12-02 13:20:24,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 470 states have (on average 1.2765957446808511) internal successors, (600), 471 states have internal predecessors, (600), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-02 13:20:24,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 607 transitions. [2024-12-02 13:20:24,762 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 607 transitions. Word has length 184 [2024-12-02 13:20:24,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:20:24,762 INFO L471 AbstractCegarLoop]: Abstraction has 477 states and 607 transitions. [2024-12-02 13:20:24,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 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) [2024-12-02 13:20:24,763 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 607 transitions. [2024-12-02 13:20:24,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-12-02 13:20:24,763 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:20:24,763 INFO L218 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:20:24,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 13:20:24,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 13:20:24,964 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:20:24,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:20:24,964 INFO L85 PathProgramCache]: Analyzing trace with hash 595700229, now seen corresponding path program 1 times [2024-12-02 13:20:24,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:20:24,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071279101] [2024-12-02 13:20:24,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:20:24,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:20:25,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:20:25,356 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:20:25,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:20:25,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071279101] [2024-12-02 13:20:25,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071279101] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:20:25,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853587786] [2024-12-02 13:20:25,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:20:25,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:20:25,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:20:25,358 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:20:25,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 13:20:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:20:25,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 853 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 13:20:25,949 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:20:26,160 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 13:20:26,160 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:20:26,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853587786] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:20:26,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:20:26,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2024-12-02 13:20:26,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606372837] [2024-12-02 13:20:26,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:20:26,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 13:20:26,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:20:26,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 13:20:26,162 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-12-02 13:20:26,162 INFO L87 Difference]: Start difference. First operand 477 states and 607 transitions. Second operand has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 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) [2024-12-02 13:20:26,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:20:26,559 INFO L93 Difference]: Finished difference Result 624 states and 799 transitions. [2024-12-02 13:20:26,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 13:20:26,560 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 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 184 [2024-12-02 13:20:26,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:20:26,561 INFO L225 Difference]: With dead ends: 624 [2024-12-02 13:20:26,562 INFO L226 Difference]: Without dead ends: 482 [2024-12-02 13:20:26,562 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-12-02 13:20:26,562 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 10 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:20:26,562 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1697 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 13:20:26,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2024-12-02 13:20:26,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 477. [2024-12-02 13:20:26,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 470 states have (on average 1.2765957446808511) internal successors, (600), 471 states have internal predecessors, (600), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-02 13:20:26,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 607 transitions. [2024-12-02 13:20:26,573 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 607 transitions. Word has length 184 [2024-12-02 13:20:26,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:20:26,574 INFO L471 AbstractCegarLoop]: Abstraction has 477 states and 607 transitions. [2024-12-02 13:20:26,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 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) [2024-12-02 13:20:26,574 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 607 transitions. [2024-12-02 13:20:26,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-12-02 13:20:26,575 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:20:26,575 INFO L218 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:20:26,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 13:20:26,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:20:26,775 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:20:26,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:20:26,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1914642363, now seen corresponding path program 1 times [2024-12-02 13:20:26,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:20:26,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975766932] [2024-12-02 13:20:26,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:20:26,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:20:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:20:27,238 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:20:27,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:20:27,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975766932] [2024-12-02 13:20:27,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975766932] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:20:27,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749773201] [2024-12-02 13:20:27,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:20:27,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:20:27,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:20:27,240 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:20:27,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e453a8fc-78f6-4b9a-b3c6-a175d4ce0fac/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 13:20:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:20:27,932 INFO L256 TraceCheckSpWp]: Trace formula consists of 854 conjuncts, 133 conjuncts are in the unsatisfiable core [2024-12-02 13:20:27,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:20:27,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-12-02 13:20:28,230 INFO L349 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2024-12-02 13:20:28,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2024-12-02 13:20:28,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 13:20:28,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2024-12-02 13:20:28,520 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-02 13:20:28,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2024-12-02 13:20:34,203 INFO L224 Elim1Store]: Index analysis took 200 ms