./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.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_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/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_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/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_f8988b37-1ee9-4885-9f11-a52c50c36440/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 8a34048511216dfe9a14f70dd929fd2de5a6eaf4560cb9e9e466dd0467a1d6d7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 06:51:55,671 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 06:51:55,725 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 06:51:55,730 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 06:51:55,730 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 06:51:55,752 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 06:51:55,752 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 06:51:55,753 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 06:51:55,753 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 06:51:55,753 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 06:51:55,753 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 06:51:55,753 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 06:51:55,753 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 06:51:55,754 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 06:51:55,754 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 06:51:55,754 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 06:51:55,754 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 06:51:55,754 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 06:51:55,754 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 06:51:55,754 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 06:51:55,754 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 06:51:55,754 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 06:51:55,754 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 06:51:55,755 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 06:51:55,755 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 06:51:55,755 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 06:51:55,755 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 06:51:55,755 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 06:51:55,755 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 06:51:55,755 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:51:55,755 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:51:55,755 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:51:55,755 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:51:55,756 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 06:51:55,756 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:51:55,756 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:51:55,756 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:51:55,756 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:51:55,756 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 06:51:55,756 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 06:51:55,756 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 06:51:55,756 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 06:51:55,756 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 06:51:55,757 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 06:51:55,757 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 06:51:55,757 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 06:51:55,757 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 06:51:55,757 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 06:51:55,757 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_f8988b37-1ee9-4885-9f11-a52c50c36440/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 -> 8a34048511216dfe9a14f70dd929fd2de5a6eaf4560cb9e9e466dd0467a1d6d7 [2024-12-02 06:51:55,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 06:51:55,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 06:51:55,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 06:51:55,971 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 06:51:55,972 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 06:51:55,973 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i [2024-12-02 06:51:58,604 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/data/383c0f8c8/7b16fda0999c4f2b8e1e98803f304ed5/FLAG483d2e3a0 [2024-12-02 06:51:58,901 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 06:51:58,902 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i [2024-12-02 06:51:58,915 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/data/383c0f8c8/7b16fda0999c4f2b8e1e98803f304ed5/FLAG483d2e3a0 [2024-12-02 06:51:59,194 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/data/383c0f8c8/7b16fda0999c4f2b8e1e98803f304ed5 [2024-12-02 06:51:59,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 06:51:59,196 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 06:51:59,197 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 06:51:59,197 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 06:51:59,200 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 06:51:59,201 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:51:59" (1/1) ... [2024-12-02 06:51:59,201 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e70fbd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:59, skipping insertion in model container [2024-12-02 06:51:59,202 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:51:59" (1/1) ... [2024-12-02 06:51:59,230 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 06:51:59,489 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_f8988b37-1ee9-4885-9f11-a52c50c36440/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i[33021,33034] [2024-12-02 06:51:59,559 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:51:59,569 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 06:51:59,601 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_f8988b37-1ee9-4885-9f11-a52c50c36440/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i[33021,33034] [2024-12-02 06:51:59,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:51:59,669 INFO L204 MainTranslator]: Completed translation [2024-12-02 06:51:59,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:59 WrapperNode [2024-12-02 06:51:59,669 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 06:51:59,670 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 06:51:59,670 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 06:51:59,670 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 06:51:59,675 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:59" (1/1) ... [2024-12-02 06:51:59,691 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:59" (1/1) ... [2024-12-02 06:51:59,727 INFO L138 Inliner]: procedures = 176, calls = 179, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 820 [2024-12-02 06:51:59,727 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 06:51:59,728 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 06:51:59,728 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 06:51:59,728 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 06:51:59,737 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:59" (1/1) ... [2024-12-02 06:51:59,737 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:59" (1/1) ... [2024-12-02 06:51:59,744 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:59" (1/1) ... [2024-12-02 06:51:59,781 INFO L175 MemorySlicer]: Split 158 memory accesses to 2 slices as follows [2, 156]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 42 writes are split as follows [0, 42]. [2024-12-02 06:51:59,782 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:59" (1/1) ... [2024-12-02 06:51:59,782 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:59" (1/1) ... [2024-12-02 06:51:59,804 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:59" (1/1) ... [2024-12-02 06:51:59,806 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:59" (1/1) ... [2024-12-02 06:51:59,813 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:59" (1/1) ... [2024-12-02 06:51:59,816 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:59" (1/1) ... [2024-12-02 06:51:59,819 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:59" (1/1) ... [2024-12-02 06:51:59,825 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 06:51:59,826 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 06:51:59,826 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 06:51:59,826 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 06:51:59,827 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:59" (1/1) ... [2024-12-02 06:51:59,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:51:59,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:51:59,860 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 06:51:59,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 06:51:59,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 06:51:59,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 06:51:59,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-12-02 06:51:59,881 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-12-02 06:51:59,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 06:51:59,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 06:51:59,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-12-02 06:51:59,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-12-02 06:51:59,881 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-12-02 06:51:59,881 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-12-02 06:51:59,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 06:51:59,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 06:51:59,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 06:51:59,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 06:51:59,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 06:51:59,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 06:51:59,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 06:51:59,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 06:51:59,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 06:51:59,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 06:51:59,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 06:52:00,016 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 06:52:00,018 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 06:52:00,978 INFO L? ?]: Removed 208 outVars from TransFormulas that were not future-live. [2024-12-02 06:52:00,978 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 06:52:00,991 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 06:52:00,992 INFO L312 CfgBuilder]: Removed 18 assume(true) statements. [2024-12-02 06:52:00,992 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:52:00 BoogieIcfgContainer [2024-12-02 06:52:00,992 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 06:52:00,994 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 06:52:00,994 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 06:52:00,998 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 06:52:00,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:51:59" (1/3) ... [2024-12-02 06:52:00,998 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e3046c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:52:00, skipping insertion in model container [2024-12-02 06:52:00,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:59" (2/3) ... [2024-12-02 06:52:00,999 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e3046c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:52:00, skipping insertion in model container [2024-12-02 06:52:00,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:52:00" (3/3) ... [2024-12-02 06:52:01,000 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test1-1.i [2024-12-02 06:52:01,012 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 06:52:01,013 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_JEN_test1-1.i that has 4 procedures, 243 locations, 1 initial locations, 20 loop locations, and 1 error locations. [2024-12-02 06:52:01,074 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:52:01,085 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;@4a7de70e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:52:01,085 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 06:52:01,088 INFO L276 IsEmpty]: Start isEmpty. Operand has 239 states, 222 states have (on average 1.6036036036036037) internal successors, (356), 233 states have internal predecessors, (356), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-12-02 06:52:01,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-12-02 06:52:01,093 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:52:01,093 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:52:01,094 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:52:01,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:52:01,098 INFO L85 PathProgramCache]: Analyzing trace with hash -871851695, now seen corresponding path program 1 times [2024-12-02 06:52:01,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:52:01,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413588472] [2024-12-02 06:52:01,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:52:01,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:52:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:52:01,256 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 06:52:01,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:52:01,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413588472] [2024-12-02 06:52:01,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413588472] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:52:01,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:52:01,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:52:01,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676809831] [2024-12-02 06:52:01,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:52:01,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:52:01,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:52:01,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:52:01,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:52:01,282 INFO L87 Difference]: Start difference. First operand has 239 states, 222 states have (on average 1.6036036036036037) internal successors, (356), 233 states have internal predecessors, (356), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:52:01,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:52:01,381 INFO L93 Difference]: Finished difference Result 674 states and 1092 transitions. [2024-12-02 06:52:01,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:52:01,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-12-02 06:52:01,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:52:01,395 INFO L225 Difference]: With dead ends: 674 [2024-12-02 06:52:01,395 INFO L226 Difference]: Without dead ends: 433 [2024-12-02 06:52:01,399 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 06:52:01,402 INFO L435 NwaCegarLoop]: 343 mSDtfsCounter, 278 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:52:01,403 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 683 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:52:01,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2024-12-02 06:52:01,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 236. [2024-12-02 06:52:01,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 220 states have (on average 1.440909090909091) internal successors, (317), 230 states have internal predecessors, (317), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-12-02 06:52:01,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 343 transitions. [2024-12-02 06:52:01,457 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 343 transitions. Word has length 11 [2024-12-02 06:52:01,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:52:01,457 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 343 transitions. [2024-12-02 06:52:01,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:52:01,458 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 343 transitions. [2024-12-02 06:52:01,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-12-02 06:52:01,461 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:52:01,462 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:52:01,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 06:52:01,462 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:52:01,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:52:01,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1524368446, now seen corresponding path program 1 times [2024-12-02 06:52:01,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:52:01,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051792718] [2024-12-02 06:52:01,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:52:01,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:52:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:52:01,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:52:01,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:52:01,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051792718] [2024-12-02 06:52:01,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051792718] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:52:01,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:52:01,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:52:01,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521943598] [2024-12-02 06:52:01,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:52:01,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:52:01,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:52:01,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:52:01,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:52:01,924 INFO L87 Difference]: Start difference. First operand 236 states and 343 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:52:02,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:52:02,054 INFO L93 Difference]: Finished difference Result 472 states and 686 transitions. [2024-12-02 06:52:02,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:52:02,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2024-12-02 06:52:02,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:52:02,057 INFO L225 Difference]: With dead ends: 472 [2024-12-02 06:52:02,058 INFO L226 Difference]: Without dead ends: 239 [2024-12-02 06:52:02,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:52:02,059 INFO L435 NwaCegarLoop]: 314 mSDtfsCounter, 88 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:52:02,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 1150 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:52:02,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-12-02 06:52:02,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 236. [2024-12-02 06:52:02,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 220 states have (on average 1.4090909090909092) internal successors, (310), 230 states have internal predecessors, (310), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-12-02 06:52:02,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 336 transitions. [2024-12-02 06:52:02,078 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 336 transitions. Word has length 87 [2024-12-02 06:52:02,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:52:02,078 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 336 transitions. [2024-12-02 06:52:02,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:52:02,078 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 336 transitions. [2024-12-02 06:52:02,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-12-02 06:52:02,081 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:52:02,081 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:52:02,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 06:52:02,082 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:52:02,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:52:02,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1515792822, now seen corresponding path program 1 times [2024-12-02 06:52:02,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:52:02,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102531047] [2024-12-02 06:52:02,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:52:02,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:52:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:52:02,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:52:02,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:52:02,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102531047] [2024-12-02 06:52:02,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102531047] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:52:02,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:52:02,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:52:02,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066691560] [2024-12-02 06:52:02,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:52:02,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:52:02,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:52:02,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:52:02,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:52:02,287 INFO L87 Difference]: Start difference. First operand 236 states and 336 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:52:02,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:52:02,346 INFO L93 Difference]: Finished difference Result 475 states and 678 transitions. [2024-12-02 06:52:02,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:52:02,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2024-12-02 06:52:02,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:52:02,348 INFO L225 Difference]: With dead ends: 475 [2024-12-02 06:52:02,348 INFO L226 Difference]: Without dead ends: 242 [2024-12-02 06:52:02,349 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:52:02,350 INFO L435 NwaCegarLoop]: 329 mSDtfsCounter, 1 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:52:02,350 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 636 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:52:02,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-12-02 06:52:02,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2024-12-02 06:52:02,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 226 states have (on average 1.3982300884955752) internal successors, (316), 236 states have internal predecessors, (316), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-12-02 06:52:02,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 342 transitions. [2024-12-02 06:52:02,366 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 342 transitions. Word has length 87 [2024-12-02 06:52:02,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:52:02,367 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 342 transitions. [2024-12-02 06:52:02,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:52:02,367 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 342 transitions. [2024-12-02 06:52:02,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-12-02 06:52:02,369 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:52:02,370 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:52:02,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 06:52:02,370 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:52:02,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:52:02,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1082063736, now seen corresponding path program 1 times [2024-12-02 06:52:02,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:52:02,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113104036] [2024-12-02 06:52:02,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:52:02,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:52:02,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:52:02,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:52:02,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:52:02,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113104036] [2024-12-02 06:52:02,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113104036] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:52:02,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:52:02,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:52:02,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330954694] [2024-12-02 06:52:02,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:52:02,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:52:02,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:52:02,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:52:02,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:52:02,545 INFO L87 Difference]: Start difference. First operand 242 states and 342 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:52:02,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:52:02,592 INFO L93 Difference]: Finished difference Result 618 states and 878 transitions. [2024-12-02 06:52:02,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:52:02,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2024-12-02 06:52:02,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:52:02,597 INFO L225 Difference]: With dead ends: 618 [2024-12-02 06:52:02,597 INFO L226 Difference]: Without dead ends: 379 [2024-12-02 06:52:02,597 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 06:52:02,598 INFO L435 NwaCegarLoop]: 334 mSDtfsCounter, 135 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:52:02,599 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 660 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:52:02,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-12-02 06:52:02,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2024-12-02 06:52:02,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 363 states have (on average 1.4104683195592287) internal successors, (512), 373 states have internal predecessors, (512), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-12-02 06:52:02,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 538 transitions. [2024-12-02 06:52:02,615 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 538 transitions. Word has length 87 [2024-12-02 06:52:02,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:52:02,615 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 538 transitions. [2024-12-02 06:52:02,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:52:02,616 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 538 transitions. [2024-12-02 06:52:02,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 06:52:02,617 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:52:02,617 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:52:02,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 06:52:02,617 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:52:02,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:52:02,618 INFO L85 PathProgramCache]: Analyzing trace with hash -630023000, now seen corresponding path program 1 times [2024-12-02 06:52:02,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:52:02,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974901450] [2024-12-02 06:52:02,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:52:02,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:52:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:52:02,819 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 06:52:02,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:52:02,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974901450] [2024-12-02 06:52:02,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974901450] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:52:02,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578682401] [2024-12-02 06:52:02,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:52:02,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:52:02,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:52:02,822 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:52:02,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 06:52:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:52:03,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 06:52:03,120 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:52:03,302 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 06:52:03,303 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:52:03,456 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 06:52:03,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578682401] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:52:03,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:52:03,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-12-02 06:52:03,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133218545] [2024-12-02 06:52:03,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:52:03,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:52:03,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:52:03,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:52:03,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:52:03,459 INFO L87 Difference]: Start difference. First operand 379 states and 538 transitions. Second operand has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-12-02 06:52:03,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:52:03,571 INFO L93 Difference]: Finished difference Result 883 states and 1244 transitions. [2024-12-02 06:52:03,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 06:52:03,572 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 102 [2024-12-02 06:52:03,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:52:03,576 INFO L225 Difference]: With dead ends: 883 [2024-12-02 06:52:03,576 INFO L226 Difference]: Without dead ends: 852 [2024-12-02 06:52:03,577 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:52:03,577 INFO L435 NwaCegarLoop]: 377 mSDtfsCounter, 1065 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 1673 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:52:03,578 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 1673 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:52:03,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2024-12-02 06:52:03,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 852. [2024-12-02 06:52:03,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 827 states have (on average 1.3869407496977026) internal successors, (1147), 837 states have internal predecessors, (1147), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2024-12-02 06:52:03,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1191 transitions. [2024-12-02 06:52:03,606 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1191 transitions. Word has length 102 [2024-12-02 06:52:03,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:52:03,607 INFO L471 AbstractCegarLoop]: Abstraction has 852 states and 1191 transitions. [2024-12-02 06:52:03,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-12-02 06:52:03,607 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1191 transitions. [2024-12-02 06:52:03,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2024-12-02 06:52:03,613 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:52:03,613 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:52:03,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 06:52:03,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:52:03,813 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:52:03,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:52:03,814 INFO L85 PathProgramCache]: Analyzing trace with hash 876153885, now seen corresponding path program 1 times [2024-12-02 06:52:03,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:52:03,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084896212] [2024-12-02 06:52:03,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:52:03,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:52:04,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:52:04,847 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 454 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 06:52:04,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:52:04,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084896212] [2024-12-02 06:52:04,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084896212] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:52:04,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408093417] [2024-12-02 06:52:04,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:52:04,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:52:04,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:52:04,850 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:52:04,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 06:52:05,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:52:05,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 1659 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 06:52:05,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:52:05,912 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 454 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 06:52:05,912 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:52:06,374 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 454 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 06:52:06,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408093417] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:52:06,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:52:06,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-12-02 06:52:06,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352560558] [2024-12-02 06:52:06,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:52:06,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 06:52:06,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:52:06,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 06:52:06,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-12-02 06:52:06,377 INFO L87 Difference]: Start difference. First operand 852 states and 1191 transitions. Second operand has 13 states, 13 states have (on average 55.0) internal successors, (715), 13 states have internal predecessors, (715), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-12-02 06:52:06,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:52:06,683 INFO L93 Difference]: Finished difference Result 2107 states and 2951 transitions. [2024-12-02 06:52:06,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 06:52:06,684 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 55.0) internal successors, (715), 13 states have internal predecessors, (715), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 330 [2024-12-02 06:52:06,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:52:06,694 INFO L225 Difference]: With dead ends: 2107 [2024-12-02 06:52:06,694 INFO L226 Difference]: Without dead ends: 2076 [2024-12-02 06:52:06,695 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 654 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-12-02 06:52:06,696 INFO L435 NwaCegarLoop]: 422 mSDtfsCounter, 4230 mSDsluCounter, 3050 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4256 SdHoareTripleChecker+Valid, 3472 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:52:06,696 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4256 Valid, 3472 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:52:06,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2076 states. [2024-12-02 06:52:06,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2076 to 2076. [2024-12-02 06:52:06,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2076 states, 2033 states have (on average 1.384653221839646) internal successors, (2815), 2043 states have internal predecessors, (2815), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 31 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 06:52:06,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2076 states to 2076 states and 2895 transitions. [2024-12-02 06:52:06,745 INFO L78 Accepts]: Start accepts. Automaton has 2076 states and 2895 transitions. Word has length 330 [2024-12-02 06:52:06,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:52:06,746 INFO L471 AbstractCegarLoop]: Abstraction has 2076 states and 2895 transitions. [2024-12-02 06:52:06,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 55.0) internal successors, (715), 13 states have internal predecessors, (715), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-12-02 06:52:06,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2076 states and 2895 transitions. [2024-12-02 06:52:06,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2024-12-02 06:52:06,762 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:52:06,763 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:52:06,772 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 06:52:06,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:52:06,964 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:52:06,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:52:06,964 INFO L85 PathProgramCache]: Analyzing trace with hash -362004601, now seen corresponding path program 2 times [2024-12-02 06:52:06,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:52:06,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547264612] [2024-12-02 06:52:06,965 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:52:06,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:54:40,856 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 06:54:40,856 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:54:41,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3416 backedges. 505 proven. 3 refuted. 0 times theorem prover too weak. 2908 trivial. 0 not checked. [2024-12-02 06:54:41,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:54:41,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547264612] [2024-12-02 06:54:41,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547264612] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:54:41,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010082150] [2024-12-02 06:54:41,879 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:54:41,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:54:41,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:54:41,881 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:54:41,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 06:54:46,630 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 06:54:46,630 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:54:46,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 3849 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-12-02 06:54:46,679 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:54:46,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2024-12-02 06:54:47,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3416 backedges. 899 proven. 33 refuted. 0 times theorem prover too weak. 2484 trivial. 0 not checked. [2024-12-02 06:54:47,603 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:54:50,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010082150] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:54:50,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 06:54:50,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 13] total 15 [2024-12-02 06:54:50,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642848171] [2024-12-02 06:54:50,209 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 06:54:50,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 06:54:50,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:54:50,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 06:54:50,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2024-12-02 06:54:50,211 INFO L87 Difference]: Start difference. First operand 2076 states and 2895 transitions. Second operand has 15 states, 15 states have (on average 18.0) internal successors, (270), 15 states have internal predecessors, (270), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-02 06:54:54,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:54:54,236 INFO L93 Difference]: Finished difference Result 4053 states and 5651 transitions. [2024-12-02 06:54:54,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 06:54:54,237 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 18.0) internal successors, (270), 15 states have internal predecessors, (270), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 786 [2024-12-02 06:54:54,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:54:54,242 INFO L225 Difference]: With dead ends: 4053 [2024-12-02 06:54:54,242 INFO L226 Difference]: Without dead ends: 2120 [2024-12-02 06:54:54,243 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1517 GetRequests, 1485 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=225, Invalid=897, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 06:54:54,244 INFO L435 NwaCegarLoop]: 606 mSDtfsCounter, 734 mSDsluCounter, 4288 mSDsCounter, 0 mSdLazyCounter, 2719 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 4894 SdHoareTripleChecker+Invalid, 2729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-12-02 06:54:54,244 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 4894 Invalid, 2729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2719 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-12-02 06:54:54,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2120 states. [2024-12-02 06:54:54,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2120 to 2113. [2024-12-02 06:54:54,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2113 states, 2069 states have (on average 1.3813436442725955) internal successors, (2858), 2079 states have internal predecessors, (2858), 40 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (40), 31 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 06:54:54,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 2938 transitions. [2024-12-02 06:54:54,310 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 2938 transitions. Word has length 786 [2024-12-02 06:54:54,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:54:54,310 INFO L471 AbstractCegarLoop]: Abstraction has 2113 states and 2938 transitions. [2024-12-02 06:54:54,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.0) internal successors, (270), 15 states have internal predecessors, (270), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-02 06:54:54,311 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 2938 transitions. [2024-12-02 06:54:54,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 788 [2024-12-02 06:54:54,336 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:54:54,336 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:54:54,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 06:54:54,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:54:54,537 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:54:54,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:54:54,537 INFO L85 PathProgramCache]: Analyzing trace with hash -125869361, now seen corresponding path program 1 times [2024-12-02 06:54:54,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:54:54,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142165972] [2024-12-02 06:54:54,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:54:54,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:54:54,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:54:55,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3418 backedges. 853 proven. 0 refuted. 0 times theorem prover too weak. 2565 trivial. 0 not checked. [2024-12-02 06:54:55,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:54:55,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142165972] [2024-12-02 06:54:55,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142165972] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:54:55,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:54:55,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:54:55,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230158837] [2024-12-02 06:54:55,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:54:55,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:54:55,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:54:55,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:54:55,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:54:55,936 INFO L87 Difference]: Start difference. First operand 2113 states and 2938 transitions. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 06:54:55,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:54:55,986 INFO L93 Difference]: Finished difference Result 3635 states and 4979 transitions. [2024-12-02 06:54:55,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:54:55,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 787 [2024-12-02 06:54:55,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:54:55,991 INFO L225 Difference]: With dead ends: 3635 [2024-12-02 06:54:55,991 INFO L226 Difference]: Without dead ends: 1531 [2024-12-02 06:54:55,993 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 06:54:55,993 INFO L435 NwaCegarLoop]: 238 mSDtfsCounter, 9 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:54:55,993 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 695 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:54:55,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2024-12-02 06:54:56,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1531. [2024-12-02 06:54:56,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1487 states have (on average 1.3113651647612643) internal successors, (1950), 1497 states have internal predecessors, (1950), 40 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (40), 31 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 06:54:56,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 2030 transitions. [2024-12-02 06:54:56,020 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 2030 transitions. Word has length 787 [2024-12-02 06:54:56,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:54:56,020 INFO L471 AbstractCegarLoop]: Abstraction has 1531 states and 2030 transitions. [2024-12-02 06:54:56,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 06:54:56,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 2030 transitions. [2024-12-02 06:54:56,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2024-12-02 06:54:56,025 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:54:56,025 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:54:56,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 06:54:56,025 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:54:56,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:54:56,026 INFO L85 PathProgramCache]: Analyzing trace with hash 221273084, now seen corresponding path program 1 times [2024-12-02 06:54:56,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:54:56,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973945241] [2024-12-02 06:54:56,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:54:56,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:57:30,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:57:31,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3418 backedges. 505 proven. 5 refuted. 0 times theorem prover too weak. 2908 trivial. 0 not checked. [2024-12-02 06:57:31,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:57:31,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973945241] [2024-12-02 06:57:31,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973945241] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:57:31,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936386250] [2024-12-02 06:57:31,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:57:31,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:57:31,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:57:31,370 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:57:31,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 06:57:59,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:57:59,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 3865 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-12-02 06:57:59,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:57:59,657 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 06:58:00,010 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 06:58:00,011 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 06:58:00,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3418 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-12-02 06:58:00,187 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:58:00,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936386250] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:58:00,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:58:00,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2024-12-02 06:58:00,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492354308] [2024-12-02 06:58:00,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:58:00,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 06:58:00,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:58:00,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 06:58:00,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-12-02 06:58:00,188 INFO L87 Difference]: Start difference. First operand 1531 states and 2030 transitions. Second operand has 11 states, 11 states have (on average 12.090909090909092) internal successors, (133), 11 states have internal predecessors, (133), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 06:58:01,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:58:01,300 INFO L93 Difference]: Finished difference Result 3024 states and 4019 transitions. [2024-12-02 06:58:01,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 06:58:01,300 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.090909090909092) internal successors, (133), 11 states have internal predecessors, (133), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 788 [2024-12-02 06:58:01,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:58:01,304 INFO L225 Difference]: With dead ends: 3024 [2024-12-02 06:58:01,304 INFO L226 Difference]: Without dead ends: 1531 [2024-12-02 06:58:01,306 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 800 GetRequests, 780 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2024-12-02 06:58:01,306 INFO L435 NwaCegarLoop]: 280 mSDtfsCounter, 288 mSDsluCounter, 1249 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 06:58:01,307 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 1529 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 06:58:01,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2024-12-02 06:58:01,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1531. [2024-12-02 06:58:01,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1487 states have (on average 1.3106926698049766) internal successors, (1949), 1497 states have internal predecessors, (1949), 40 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (40), 31 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 06:58:01,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 2029 transitions. [2024-12-02 06:58:01,344 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 2029 transitions. Word has length 788 [2024-12-02 06:58:01,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:58:01,345 INFO L471 AbstractCegarLoop]: Abstraction has 1531 states and 2029 transitions. [2024-12-02 06:58:01,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.090909090909092) internal successors, (133), 11 states have internal predecessors, (133), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 06:58:01,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 2029 transitions. [2024-12-02 06:58:01,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 790 [2024-12-02 06:58:01,352 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:58:01,353 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 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] [2024-12-02 06:58:01,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 06:58:01,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:58:01,553 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:58:01,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:58:01,554 INFO L85 PathProgramCache]: Analyzing trace with hash -734226871, now seen corresponding path program 2 times [2024-12-02 06:58:01,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:58:01,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158116009] [2024-12-02 06:58:01,554 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:58:01,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:59:43,291 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 06:59:43,291 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:59:44,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3419 backedges. 506 proven. 5 refuted. 0 times theorem prover too weak. 2908 trivial. 0 not checked. [2024-12-02 06:59:44,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:59:44,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158116009] [2024-12-02 06:59:44,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158116009] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:59:44,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592264878] [2024-12-02 06:59:44,116 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:59:44,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:59:44,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:59:44,118 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:59:44,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 06:59:55,778 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 06:59:55,778 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:59:55,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 3866 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-12-02 06:59:55,833 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:59:55,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3419 backedges. 299 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-12-02 06:59:55,885 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:59:55,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592264878] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:59:55,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:59:55,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-12-02 06:59:55,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082580567] [2024-12-02 06:59:55,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:59:55,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:59:55,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:59:55,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:59:55,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:59:55,887 INFO L87 Difference]: Start difference. First operand 1531 states and 2029 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 06:59:55,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:59:55,985 INFO L93 Difference]: Finished difference Result 3024 states and 4018 transitions. [2024-12-02 06:59:55,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:59:55,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 789 [2024-12-02 06:59:55,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:59:55,991 INFO L225 Difference]: With dead ends: 3024 [2024-12-02 06:59:55,991 INFO L226 Difference]: Without dead ends: 1531 [2024-12-02 06:59:55,993 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 793 GetRequests, 788 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 06:59:55,994 INFO L435 NwaCegarLoop]: 244 mSDtfsCounter, 13 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:59:55,994 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 607 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:59:55,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2024-12-02 06:59:56,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1531. [2024-12-02 06:59:56,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1487 states have (on average 1.3039677202420983) internal successors, (1939), 1497 states have internal predecessors, (1939), 40 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (40), 31 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 06:59:56,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 2019 transitions. [2024-12-02 06:59:56,029 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 2019 transitions. Word has length 789 [2024-12-02 06:59:56,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:59:56,030 INFO L471 AbstractCegarLoop]: Abstraction has 1531 states and 2019 transitions. [2024-12-02 06:59:56,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 06:59:56,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 2019 transitions. [2024-12-02 06:59:56,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2024-12-02 06:59:56,037 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:59:56,037 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:59:56,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 06:59:56,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:59:56,238 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:59:56,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:59:56,238 INFO L85 PathProgramCache]: Analyzing trace with hash -157507551, now seen corresponding path program 1 times [2024-12-02 06:59:56,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:59:56,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191745534] [2024-12-02 06:59:56,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:59:56,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:59:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:59:57,430 INFO L134 CoverageAnalysis]: Checked inductivity of 3420 backedges. 318 proven. 0 refuted. 0 times theorem prover too weak. 3102 trivial. 0 not checked. [2024-12-02 06:59:57,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:59:57,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191745534] [2024-12-02 06:59:57,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191745534] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:59:57,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:59:57,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:59:57,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889804413] [2024-12-02 06:59:57,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:59:57,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:59:57,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:59:57,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:59:57,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:59:57,432 INFO L87 Difference]: Start difference. First operand 1531 states and 2019 transitions. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 06:59:57,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:59:57,606 INFO L93 Difference]: Finished difference Result 3051 states and 4044 transitions. [2024-12-02 06:59:57,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 06:59:57,607 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 791 [2024-12-02 06:59:57,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:59:57,612 INFO L225 Difference]: With dead ends: 3051 [2024-12-02 06:59:57,612 INFO L226 Difference]: Without dead ends: 1561 [2024-12-02 06:59:57,613 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 06:59:57,614 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 4 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 771 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 06:59:57,614 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 771 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:59:57,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2024-12-02 06:59:57,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 1561. [2024-12-02 06:59:57,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1561 states, 1517 states have (on average 1.2979564930784444) internal successors, (1969), 1527 states have internal predecessors, (1969), 40 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (40), 31 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 06:59:57,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 2049 transitions. [2024-12-02 06:59:57,651 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 2049 transitions. Word has length 791 [2024-12-02 06:59:57,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:59:57,651 INFO L471 AbstractCegarLoop]: Abstraction has 1561 states and 2049 transitions. [2024-12-02 06:59:57,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 06:59:57,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 2049 transitions. [2024-12-02 06:59:57,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2024-12-02 06:59:57,659 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:59:57,659 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:59:57,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 06:59:57,659 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:59:57,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:59:57,660 INFO L85 PathProgramCache]: Analyzing trace with hash -663568407, now seen corresponding path program 1 times [2024-12-02 06:59:57,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:59:57,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901024772] [2024-12-02 06:59:57,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:59:57,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:59:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:59:58,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3421 backedges. 337 proven. 0 refuted. 0 times theorem prover too weak. 3084 trivial. 0 not checked. [2024-12-02 06:59:58,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:59:58,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901024772] [2024-12-02 06:59:58,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901024772] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:59:58,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:59:58,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 06:59:58,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892349557] [2024-12-02 06:59:58,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:59:58,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:59:58,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:59:58,798 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:59:58,798 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:59:58,798 INFO L87 Difference]: Start difference. First operand 1561 states and 2049 transitions. Second operand has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 06:59:59,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:59:59,047 INFO L93 Difference]: Finished difference Result 3121 states and 4120 transitions. [2024-12-02 06:59:59,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 06:59:59,047 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 793 [2024-12-02 06:59:59,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:59:59,050 INFO L225 Difference]: With dead ends: 3121 [2024-12-02 06:59:59,050 INFO L226 Difference]: Without dead ends: 1611 [2024-12-02 06:59:59,052 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 06:59:59,052 INFO L435 NwaCegarLoop]: 233 mSDtfsCounter, 8 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:59:59,052 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1082 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:59:59,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2024-12-02 06:59:59,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1601. [2024-12-02 06:59:59,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1557 states have (on average 1.2967244701348748) internal successors, (2019), 1567 states have internal predecessors, (2019), 40 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (40), 31 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 06:59:59,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2099 transitions. [2024-12-02 06:59:59,088 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2099 transitions. Word has length 793 [2024-12-02 06:59:59,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:59:59,088 INFO L471 AbstractCegarLoop]: Abstraction has 1601 states and 2099 transitions. [2024-12-02 06:59:59,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 06:59:59,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2099 transitions. [2024-12-02 06:59:59,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2024-12-02 06:59:59,096 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:59:59,096 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:59:59,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 06:59:59,096 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:59:59,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:59:59,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1059427223, now seen corresponding path program 1 times [2024-12-02 06:59:59,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:59:59,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896365959] [2024-12-02 06:59:59,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:59:59,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:01:34,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:01:35,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3421 backedges. 508 proven. 5 refuted. 0 times theorem prover too weak. 2908 trivial. 0 not checked. [2024-12-02 07:01:35,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:01:35,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896365959] [2024-12-02 07:01:35,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896365959] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:01:35,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064196865] [2024-12-02 07:01:35,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:01:35,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:01:35,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:01:35,513 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:01:35,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 07:01:46,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:01:46,916 INFO L256 TraceCheckSpWp]: Trace formula consists of 3864 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-12-02 07:01:46,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:01:47,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2024-12-02 07:01:47,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3421 backedges. 1850 proven. 585 refuted. 0 times theorem prover too weak. 986 trivial. 0 not checked. [2024-12-02 07:01:47,862 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:02:02,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064196865] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:02:02,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 07:02:02,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 17] total 20 [2024-12-02 07:02:02,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269047457] [2024-12-02 07:02:02,085 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 07:02:02,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 07:02:02,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:02:02,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 07:02:02,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=910, Unknown=1, NotChecked=0, Total=1056 [2024-12-02 07:02:02,087 INFO L87 Difference]: Start difference. First operand 1601 states and 2099 transitions. Second operand has 20 states, 20 states have (on average 25.65) internal successors, (513), 20 states have internal predecessors, (513), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-02 07:02:11,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:02:11,863 INFO L93 Difference]: Finished difference Result 3114 states and 4114 transitions. [2024-12-02 07:02:11,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 07:02:11,864 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 25.65) internal successors, (513), 20 states have internal predecessors, (513), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 793 [2024-12-02 07:02:11,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:02:11,870 INFO L225 Difference]: With dead ends: 3114 [2024-12-02 07:02:11,870 INFO L226 Difference]: Without dead ends: 1606 [2024-12-02 07:02:11,872 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1524 GetRequests, 1485 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=291, Invalid=1348, Unknown=1, NotChecked=0, Total=1640 [2024-12-02 07:02:11,872 INFO L435 NwaCegarLoop]: 992 mSDtfsCounter, 983 mSDsluCounter, 11094 mSDsCounter, 0 mSdLazyCounter, 3959 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 12086 SdHoareTripleChecker+Invalid, 3969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:02:11,873 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 12086 Invalid, 3969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 3959 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2024-12-02 07:02:11,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2024-12-02 07:02:11,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1606. [2024-12-02 07:02:11,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1561 states have (on average 1.296604740550929) internal successors, (2024), 1572 states have internal predecessors, (2024), 40 states have call successors, (40), 3 states have call predecessors, (40), 4 states have return successors, (50), 31 states have call predecessors, (50), 40 states have call successors, (50) [2024-12-02 07:02:11,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2114 transitions. [2024-12-02 07:02:11,914 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2114 transitions. Word has length 793 [2024-12-02 07:02:11,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:02:11,914 INFO L471 AbstractCegarLoop]: Abstraction has 1606 states and 2114 transitions. [2024-12-02 07:02:11,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 25.65) internal successors, (513), 20 states have internal predecessors, (513), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-02 07:02:11,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2114 transitions. [2024-12-02 07:02:11,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 798 [2024-12-02 07:02:11,923 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:02:11,923 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 7, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:02:11,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 07:02:12,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8988b37-1ee9-4885-9f11-a52c50c36440/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:02:12,123 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:02:12,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:02:12,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1672490599, now seen corresponding path program 2 times [2024-12-02 07:02:12,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:02:12,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999989966] [2024-12-02 07:02:12,124 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 07:02:12,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms