./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_139a3035-4e4a-4255-a241-aa14d0cc3097/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_139a3035-4e4a-4255-a241-aa14d0cc3097/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_139a3035-4e4a-4255-a241-aa14d0cc3097/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_139a3035-4e4a-4255-a241-aa14d0cc3097/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_139a3035-4e4a-4255-a241-aa14d0cc3097/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_139a3035-4e4a-4255-a241-aa14d0cc3097/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 096e364e485b0e5279ae2fe39d9edab416c1da593e20bd1edd3d0a079c23fdc3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:32:40,997 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:32:41,081 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_139a3035-4e4a-4255-a241-aa14d0cc3097/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:32:41,087 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:32:41,087 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:32:41,112 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:32:41,113 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:32:41,113 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:32:41,114 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:32:41,114 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:32:41,115 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:32:41,115 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:32:41,116 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:32:41,116 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:32:41,116 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:32:41,116 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:32:41,116 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:32:41,116 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:32:41,116 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:32:41,116 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:32:41,117 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:32:41,117 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:32:41,117 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:32:41,117 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:32:41,117 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:32:41,117 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:32:41,117 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:32:41,117 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:32:41,117 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:32:41,117 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:32:41,118 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:32:41,118 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:32:41,118 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:32:41,118 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:32:41,119 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:32:41,119 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:32:41,119 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:32:41,119 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:32:41,119 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:32:41,119 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:32:41,119 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:32:41,119 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:32:41,120 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:32:41,120 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:32:41,120 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:32:41,120 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:32:41,120 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:32:41,120 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:32:41,120 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_139a3035-4e4a-4255-a241-aa14d0cc3097/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 096e364e485b0e5279ae2fe39d9edab416c1da593e20bd1edd3d0a079c23fdc3 [2024-11-28 04:32:41,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:32:41,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:32:41,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:32:41,433 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:32:41,434 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:32:41,435 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_139a3035-4e4a-4255-a241-aa14d0cc3097/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-2.i [2024-11-28 04:32:44,314 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_139a3035-4e4a-4255-a241-aa14d0cc3097/bin/uautomizer-verify-aQ6SnzHsRB/data/04f3bd440/f45cce0cf2ee42fd9eeed96b35337bfa/FLAG4582e3e15 [2024-11-28 04:32:44,731 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:32:44,734 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_139a3035-4e4a-4255-a241-aa14d0cc3097/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-2.i [2024-11-28 04:32:44,755 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_139a3035-4e4a-4255-a241-aa14d0cc3097/bin/uautomizer-verify-aQ6SnzHsRB/data/04f3bd440/f45cce0cf2ee42fd9eeed96b35337bfa/FLAG4582e3e15 [2024-11-28 04:32:44,774 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_139a3035-4e4a-4255-a241-aa14d0cc3097/bin/uautomizer-verify-aQ6SnzHsRB/data/04f3bd440/f45cce0cf2ee42fd9eeed96b35337bfa [2024-11-28 04:32:44,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:32:44,780 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:32:44,782 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:32:44,782 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:32:44,786 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:32:44,788 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:32:44" (1/1) ... [2024-11-28 04:32:44,790 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5051c19b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:32:44, skipping insertion in model container [2024-11-28 04:32:44,790 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:32:44" (1/1) ... [2024-11-28 04:32:44,850 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:32:45,328 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_139a3035-4e4a-4255-a241-aa14d0cc3097/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-2.i[33021,33034] [2024-11-28 04:32:45,468 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_139a3035-4e4a-4255-a241-aa14d0cc3097/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-2.i[44590,44603] [2024-11-28 04:32:45,488 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:32:45,501 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:32:45,533 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_139a3035-4e4a-4255-a241-aa14d0cc3097/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-2.i[33021,33034] [2024-11-28 04:32:45,606 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_139a3035-4e4a-4255-a241-aa14d0cc3097/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-2.i[44590,44603] [2024-11-28 04:32:45,634 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:32:45,673 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:32:45,674 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:32:45 WrapperNode [2024-11-28 04:32:45,674 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:32:45,674 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:32:45,674 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:32:45,675 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:32:45,681 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:32:45" (1/1) ... [2024-11-28 04:32:45,706 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:32:45" (1/1) ... [2024-11-28 04:32:45,787 INFO L138 Inliner]: procedures = 177, calls = 328, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1581 [2024-11-28 04:32:45,787 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:32:45,788 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:32:45,788 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:32:45,788 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:32:45,802 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:32:45" (1/1) ... [2024-11-28 04:32:45,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:32:45" (1/1) ... [2024-11-28 04:32:45,831 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:32:45" (1/1) ... [2024-11-28 04:32:45,950 INFO L175 MemorySlicer]: Split 303 memory accesses to 3 slices as follows [2, 267, 34]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 62 writes are split as follows [0, 58, 4]. [2024-11-28 04:32:45,950 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:32:45" (1/1) ... [2024-11-28 04:32:45,954 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:32:45" (1/1) ... [2024-11-28 04:32:46,046 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:32:45" (1/1) ... [2024-11-28 04:32:46,050 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:32:45" (1/1) ... [2024-11-28 04:32:46,072 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:32:45" (1/1) ... [2024-11-28 04:32:46,083 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:32:45" (1/1) ... [2024-11-28 04:32:46,092 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:32:45" (1/1) ... [2024-11-28 04:32:46,107 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:32:46,109 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:32:46,111 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:32:46,111 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:32:46,112 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:32:45" (1/1) ... [2024-11-28 04:32:46,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:32:46,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_139a3035-4e4a-4255-a241-aa14d0cc3097/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:32:46,144 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_139a3035-4e4a-4255-a241-aa14d0cc3097/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:32:46,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_139a3035-4e4a-4255-a241-aa14d0cc3097/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:32:46,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:32:46,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:32:46,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 04:32:46,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 04:32:46,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 04:32:46,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:32:46,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:32:46,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 04:32:46,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-28 04:32:46,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-28 04:32:46,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-28 04:32:46,181 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-28 04:32:46,181 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-28 04:32:46,181 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-28 04:32:46,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:32:46,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:32:46,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 04:32:46,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 04:32:46,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 04:32:46,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:32:46,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 04:32:46,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 04:32:46,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 04:32:46,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:32:46,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:32:46,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:32:46,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:32:46,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:32:46,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:32:46,409 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:32:46,412 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:32:48,505 INFO L? ?]: Removed 346 outVars from TransFormulas that were not future-live. [2024-11-28 04:32:48,506 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:32:48,541 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:32:48,541 INFO L312 CfgBuilder]: Removed 41 assume(true) statements. [2024-11-28 04:32:48,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:32:48 BoogieIcfgContainer [2024-11-28 04:32:48,542 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:32:48,544 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:32:48,545 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:32:48,550 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:32:48,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:32:44" (1/3) ... [2024-11-28 04:32:48,552 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ca51e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:32:48, skipping insertion in model container [2024-11-28 04:32:48,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:32:45" (2/3) ... [2024-11-28 04:32:48,552 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ca51e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:32:48, skipping insertion in model container [2024-11-28 04:32:48,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:32:48" (3/3) ... [2024-11-28 04:32:48,554 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test3-2.i [2024-11-28 04:32:48,569 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:32:48,571 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_JEN_test3-2.i that has 5 procedures, 460 locations, 1 initial locations, 43 loop locations, and 2 error locations. [2024-11-28 04:32:48,638 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:32:48,650 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;@7a9f9e20, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:32:48,651 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 04:32:48,656 INFO L276 IsEmpty]: Start isEmpty. Operand has 452 states, 439 states have (on average 1.6173120728929384) internal successors, (710), 446 states have internal predecessors, (710), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 04:32:48,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 04:32:48,662 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:32:48,662 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:32:48,663 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:32:48,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:32:48,668 INFO L85 PathProgramCache]: Analyzing trace with hash 450703454, now seen corresponding path program 1 times [2024-11-28 04:32:48,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:32:48,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57894446] [2024-11-28 04:32:48,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:32:48,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:32:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:32:48,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:32:48,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:32:48,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57894446] [2024-11-28 04:32:48,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57894446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:32:48,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:32:48,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:32:48,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660000488] [2024-11-28 04:32:48,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:32:48,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:32:48,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:32:48,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:32:48,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:32:48,893 INFO L87 Difference]: Start difference. First operand has 452 states, 439 states have (on average 1.6173120728929384) internal successors, (710), 446 states have internal predecessors, (710), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:32:48,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:32:48,961 INFO L93 Difference]: Finished difference Result 902 states and 1455 transitions. [2024-11-28 04:32:48,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:32:48,964 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-28 04:32:48,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:32:48,975 INFO L225 Difference]: With dead ends: 902 [2024-11-28 04:32:48,975 INFO L226 Difference]: Without dead ends: 414 [2024-11-28 04:32:48,979 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:32:48,984 INFO L435 NwaCegarLoop]: 648 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:32:48,984 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:32:49,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-11-28 04:32:49,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2024-11-28 04:32:49,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 402 states have (on average 1.445273631840796) internal successors, (581), 408 states have internal predecessors, (581), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 04:32:49,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 597 transitions. [2024-11-28 04:32:49,089 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 597 transitions. Word has length 9 [2024-11-28 04:32:49,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:32:49,089 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 597 transitions. [2024-11-28 04:32:49,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:32:49,090 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 597 transitions. [2024-11-28 04:32:49,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 04:32:49,091 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:32:49,092 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:32:49,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:32:49,092 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:32:49,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:32:49,094 INFO L85 PathProgramCache]: Analyzing trace with hash -2069399569, now seen corresponding path program 1 times [2024-11-28 04:32:49,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:32:49,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718422681] [2024-11-28 04:32:49,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:32:49,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:32:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:32:49,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:32:49,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:32:49,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718422681] [2024-11-28 04:32:49,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718422681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:32:49,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:32:49,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:32:49,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444417599] [2024-11-28 04:32:49,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:32:49,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:32:49,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:32:49,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:32:49,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:32:49,403 INFO L87 Difference]: Start difference. First operand 414 states and 597 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:32:49,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:32:49,659 INFO L93 Difference]: Finished difference Result 1024 states and 1486 transitions. [2024-11-28 04:32:49,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:32:49,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 15 [2024-11-28 04:32:49,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:32:49,666 INFO L225 Difference]: With dead ends: 1024 [2024-11-28 04:32:49,666 INFO L226 Difference]: Without dead ends: 815 [2024-11-28 04:32:49,668 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 [2024-11-28 04:32:49,671 INFO L435 NwaCegarLoop]: 626 mSDtfsCounter, 566 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:32:49,672 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 1819 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:32:49,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2024-11-28 04:32:49,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 416. [2024-11-28 04:32:49,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 404 states have (on average 1.443069306930693) internal successors, (583), 410 states have internal predecessors, (583), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 04:32:49,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 599 transitions. [2024-11-28 04:32:49,719 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 599 transitions. Word has length 15 [2024-11-28 04:32:49,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:32:49,723 INFO L471 AbstractCegarLoop]: Abstraction has 416 states and 599 transitions. [2024-11-28 04:32:49,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:32:49,723 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 599 transitions. [2024-11-28 04:32:49,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-28 04:32:49,728 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:32:49,729 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:32:49,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:32:49,729 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:32:49,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:32:49,730 INFO L85 PathProgramCache]: Analyzing trace with hash 138381864, now seen corresponding path program 1 times [2024-11-28 04:32:49,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:32:49,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811879360] [2024-11-28 04:32:49,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:32:49,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:32:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:32:50,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:32:50,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:32:50,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811879360] [2024-11-28 04:32:50,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811879360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:32:50,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:32:50,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:32:50,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853067176] [2024-11-28 04:32:50,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:32:50,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:32:50,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:32:50,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:32:50,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:32:50,429 INFO L87 Difference]: Start difference. First operand 416 states and 599 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:32:50,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:32:50,557 INFO L93 Difference]: Finished difference Result 785 states and 1127 transitions. [2024-11-28 04:32:50,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:32:50,558 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 92 [2024-11-28 04:32:50,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:32:50,562 INFO L225 Difference]: With dead ends: 785 [2024-11-28 04:32:50,563 INFO L226 Difference]: Without dead ends: 373 [2024-11-28 04:32:50,564 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:32:50,564 INFO L435 NwaCegarLoop]: 494 mSDtfsCounter, 30 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1463 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:32:50,565 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1463 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:32:50,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2024-11-28 04:32:50,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2024-11-28 04:32:50,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 361 states have (on average 1.3988919667590027) internal successors, (505), 367 states have internal predecessors, (505), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 04:32:50,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 521 transitions. [2024-11-28 04:32:50,596 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 521 transitions. Word has length 92 [2024-11-28 04:32:50,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:32:50,597 INFO L471 AbstractCegarLoop]: Abstraction has 373 states and 521 transitions. [2024-11-28 04:32:50,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:32:50,598 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 521 transitions. [2024-11-28 04:32:50,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-28 04:32:50,602 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:32:50,603 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:32:50,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:32:50,603 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:32:50,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:32:50,603 INFO L85 PathProgramCache]: Analyzing trace with hash 745064092, now seen corresponding path program 1 times [2024-11-28 04:32:50,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:32:50,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780867750] [2024-11-28 04:32:50,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:32:50,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:32:50,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:32:50,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:32:50,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:32:50,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780867750] [2024-11-28 04:32:50,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780867750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:32:50,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:32:50,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:32:50,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527013200] [2024-11-28 04:32:50,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:32:50,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:32:50,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:32:50,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:32:50,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:32:50,998 INFO L87 Difference]: Start difference. First operand 373 states and 521 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:32:51,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:32:51,151 INFO L93 Difference]: Finished difference Result 1009 states and 1425 transitions. [2024-11-28 04:32:51,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:32:51,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 92 [2024-11-28 04:32:51,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:32:51,158 INFO L225 Difference]: With dead ends: 1009 [2024-11-28 04:32:51,159 INFO L226 Difference]: Without dead ends: 640 [2024-11-28 04:32:51,160 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:32:51,161 INFO L435 NwaCegarLoop]: 723 mSDtfsCounter, 311 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:32:51,162 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 1217 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:32:51,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2024-11-28 04:32:51,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 622. [2024-11-28 04:32:51,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 610 states have (on average 1.4147540983606557) internal successors, (863), 616 states have internal predecessors, (863), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 04:32:51,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 879 transitions. [2024-11-28 04:32:51,193 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 879 transitions. Word has length 92 [2024-11-28 04:32:51,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:32:51,194 INFO L471 AbstractCegarLoop]: Abstraction has 622 states and 879 transitions. [2024-11-28 04:32:51,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:32:51,195 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 879 transitions. [2024-11-28 04:32:51,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-28 04:32:51,196 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:32:51,197 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:32:51,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:32:51,197 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:32:51,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:32:51,198 INFO L85 PathProgramCache]: Analyzing trace with hash 512760983, now seen corresponding path program 1 times [2024-11-28 04:32:51,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:32:51,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172950099] [2024-11-28 04:32:51,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:32:51,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:32:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:32:51,546 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:32:51,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:32:51,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172950099] [2024-11-28 04:32:51,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172950099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:32:51,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:32:51,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:32:51,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336472738] [2024-11-28 04:32:51,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:32:51,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:32:51,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:32:51,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:32:51,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:32:51,549 INFO L87 Difference]: Start difference. First operand 622 states and 879 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2024-11-28 04:32:51,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:32:51,613 INFO L93 Difference]: Finished difference Result 1209 states and 1719 transitions. [2024-11-28 04:32:51,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:32:51,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 107 [2024-11-28 04:32:51,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:32:51,617 INFO L225 Difference]: With dead ends: 1209 [2024-11-28 04:32:51,617 INFO L226 Difference]: Without dead ends: 622 [2024-11-28 04:32:51,618 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:32:51,619 INFO L435 NwaCegarLoop]: 507 mSDtfsCounter, 0 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:32:51,620 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 992 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:32:51,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2024-11-28 04:32:51,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 622. [2024-11-28 04:32:51,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 610 states have (on average 1.4049180327868853) internal successors, (857), 616 states have internal predecessors, (857), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 04:32:51,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 873 transitions. [2024-11-28 04:32:51,642 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 873 transitions. Word has length 107 [2024-11-28 04:32:51,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:32:51,642 INFO L471 AbstractCegarLoop]: Abstraction has 622 states and 873 transitions. [2024-11-28 04:32:51,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2024-11-28 04:32:51,643 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 873 transitions. [2024-11-28 04:32:51,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-28 04:32:51,644 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:32:51,644 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:32:51,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:32:51,645 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:32:51,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:32:51,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1221343467, now seen corresponding path program 1 times [2024-11-28 04:32:51,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:32:51,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585704478] [2024-11-28 04:32:51,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:32:51,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:32:51,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:32:52,208 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:32:52,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:32:52,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585704478] [2024-11-28 04:32:52,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585704478] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:32:52,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:32:52,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:32:52,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636953890] [2024-11-28 04:32:52,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:32:52,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:32:52,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:32:52,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:32:52,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:32:52,212 INFO L87 Difference]: Start difference. First operand 622 states and 873 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-11-28 04:32:52,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:32:52,353 INFO L93 Difference]: Finished difference Result 925 states and 1302 transitions. [2024-11-28 04:32:52,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:32:52,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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 107 [2024-11-28 04:32:52,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:32:52,361 INFO L225 Difference]: With dead ends: 925 [2024-11-28 04:32:52,361 INFO L226 Difference]: Without dead ends: 904 [2024-11-28 04:32:52,362 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 [2024-11-28 04:32:52,363 INFO L435 NwaCegarLoop]: 494 mSDtfsCounter, 463 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:32:52,363 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 1476 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:32:52,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2024-11-28 04:32:52,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 624. [2024-11-28 04:32:52,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 612 states have (on average 1.40359477124183) internal successors, (859), 618 states have internal predecessors, (859), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 04:32:52,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 875 transitions. [2024-11-28 04:32:52,391 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 875 transitions. Word has length 107 [2024-11-28 04:32:52,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:32:52,392 INFO L471 AbstractCegarLoop]: Abstraction has 624 states and 875 transitions. [2024-11-28 04:32:52,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-11-28 04:32:52,392 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 875 transitions. [2024-11-28 04:32:52,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-28 04:32:52,395 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:32:52,395 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:32:52,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:32:52,396 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:32:52,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:32:52,396 INFO L85 PathProgramCache]: Analyzing trace with hash 218257479, now seen corresponding path program 1 times [2024-11-28 04:32:52,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:32:52,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377159187] [2024-11-28 04:32:52,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:32:52,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:32:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:32:52,826 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:32:52,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:32:52,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377159187] [2024-11-28 04:32:52,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377159187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:32:52,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:32:52,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:32:52,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741508560] [2024-11-28 04:32:52,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:32:52,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:32:52,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:32:52,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:32:52,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:32:52,829 INFO L87 Difference]: Start difference. First operand 624 states and 875 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:32:52,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:32:52,936 INFO L93 Difference]: Finished difference Result 907 states and 1283 transitions. [2024-11-28 04:32:52,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:32:52,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 156 [2024-11-28 04:32:52,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:32:52,941 INFO L225 Difference]: With dead ends: 907 [2024-11-28 04:32:52,942 INFO L226 Difference]: Without dead ends: 538 [2024-11-28 04:32:52,943 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:32:52,943 INFO L435 NwaCegarLoop]: 407 mSDtfsCounter, 36 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:32:52,944 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1207 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:32:52,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-11-28 04:32:52,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2024-11-28 04:32:52,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 526 states have (on average 1.3365019011406845) internal successors, (703), 532 states have internal predecessors, (703), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 04:32:52,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 719 transitions. [2024-11-28 04:32:52,965 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 719 transitions. Word has length 156 [2024-11-28 04:32:52,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:32:52,966 INFO L471 AbstractCegarLoop]: Abstraction has 538 states and 719 transitions. [2024-11-28 04:32:52,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:32:52,967 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 719 transitions. [2024-11-28 04:32:52,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-28 04:32:52,968 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:32:52,969 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:32:52,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:32:52,969 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:32:52,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:32:52,969 INFO L85 PathProgramCache]: Analyzing trace with hash -393687117, now seen corresponding path program 1 times [2024-11-28 04:32:52,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:32:52,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656595820] [2024-11-28 04:32:52,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:32:52,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:32:53,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:32:53,255 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:32:53,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:32:53,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656595820] [2024-11-28 04:32:53,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656595820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:32:53,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:32:53,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:32:53,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759226614] [2024-11-28 04:32:53,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:32:53,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:32:53,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:32:53,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:32:53,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:32:53,259 INFO L87 Difference]: Start difference. First operand 538 states and 719 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:32:53,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:32:53,368 INFO L93 Difference]: Finished difference Result 809 states and 1093 transitions. [2024-11-28 04:32:53,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:32:53,369 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 156 [2024-11-28 04:32:53,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:32:53,372 INFO L225 Difference]: With dead ends: 809 [2024-11-28 04:32:53,372 INFO L226 Difference]: Without dead ends: 526 [2024-11-28 04:32:53,373 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 [2024-11-28 04:32:53,374 INFO L435 NwaCegarLoop]: 409 mSDtfsCounter, 9 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:32:53,374 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1208 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:32:53,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2024-11-28 04:32:53,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2024-11-28 04:32:53,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 514 states have (on average 1.328793774319066) internal successors, (683), 520 states have internal predecessors, (683), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 04:32:53,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 699 transitions. [2024-11-28 04:32:53,399 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 699 transitions. Word has length 156 [2024-11-28 04:32:53,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:32:53,400 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 699 transitions. [2024-11-28 04:32:53,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:32:53,401 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 699 transitions. [2024-11-28 04:32:53,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-28 04:32:53,405 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:32:53,405 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:32:53,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:32:53,405 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:32:53,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:32:53,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1295704645, now seen corresponding path program 1 times [2024-11-28 04:32:53,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:32:53,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645745973] [2024-11-28 04:32:53,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:32:53,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:32:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:32:53,753 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:32:53,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:32:53,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645745973] [2024-11-28 04:32:53,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645745973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:32:53,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:32:53,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:32:53,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111781607] [2024-11-28 04:32:53,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:32:53,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:32:53,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:32:53,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:32:53,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:32:53,755 INFO L87 Difference]: Start difference. First operand 526 states and 699 transitions. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:32:54,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:32:54,895 INFO L93 Difference]: Finished difference Result 1325 states and 1776 transitions. [2024-11-28 04:32:54,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:32:54,896 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 156 [2024-11-28 04:32:54,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:32:54,902 INFO L225 Difference]: With dead ends: 1325 [2024-11-28 04:32:54,902 INFO L226 Difference]: Without dead ends: 891 [2024-11-28 04:32:54,904 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:32:54,905 INFO L435 NwaCegarLoop]: 517 mSDtfsCounter, 937 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:32:54,905 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 1531 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 04:32:54,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2024-11-28 04:32:54,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 660. [2024-11-28 04:32:54,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 648 states have (on average 1.3317901234567902) internal successors, (863), 654 states have internal predecessors, (863), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 04:32:54,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 879 transitions. [2024-11-28 04:32:54,938 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 879 transitions. Word has length 156 [2024-11-28 04:32:54,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:32:54,938 INFO L471 AbstractCegarLoop]: Abstraction has 660 states and 879 transitions. [2024-11-28 04:32:54,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:32:54,939 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 879 transitions. [2024-11-28 04:32:54,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-28 04:32:54,941 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:32:54,942 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:32:54,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 04:32:54,942 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:32:54,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:32:54,946 INFO L85 PathProgramCache]: Analyzing trace with hash -899198893, now seen corresponding path program 1 times [2024-11-28 04:32:54,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:32:54,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701590122] [2024-11-28 04:32:54,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:32:54,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:32:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:32:56,120 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:32:56,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:32:56,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701590122] [2024-11-28 04:32:56,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701590122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:32:56,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328721968] [2024-11-28 04:32:56,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:32:56,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:32:56,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_139a3035-4e4a-4255-a241-aa14d0cc3097/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:32:56,124 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_139a3035-4e4a-4255-a241-aa14d0cc3097/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:32:56,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_139a3035-4e4a-4255-a241-aa14d0cc3097/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:32:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:32:56,629 INFO L256 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:32:56,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:32:56,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:32:57,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:32:57,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:32:57,030 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:32:57,031 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:32:57,317 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:32:57,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328721968] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:32:57,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:32:57,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 11 [2024-11-28 04:32:57,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231776270] [2024-11-28 04:32:57,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:32:57,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:32:57,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:32:57,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:32:57,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:32:57,322 INFO L87 Difference]: Start difference. First operand 660 states and 879 transitions. Second operand has 11 states, 11 states have (on average 22.727272727272727) internal successors, (250), 11 states have internal predecessors, (250), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 04:32:57,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:32:57,741 INFO L93 Difference]: Finished difference Result 2128 states and 2842 transitions. [2024-11-28 04:32:57,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:32:57,742 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 22.727272727272727) internal successors, (250), 11 states have internal predecessors, (250), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 166 [2024-11-28 04:32:57,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:32:57,749 INFO L225 Difference]: With dead ends: 2128 [2024-11-28 04:32:57,749 INFO L226 Difference]: Without dead ends: 1720 [2024-11-28 04:32:57,750 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 325 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:32:57,751 INFO L435 NwaCegarLoop]: 457 mSDtfsCounter, 1603 mSDsluCounter, 2660 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1614 SdHoareTripleChecker+Valid, 3117 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:32:57,751 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1614 Valid, 3117 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:32:57,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2024-11-28 04:32:57,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 1015. [2024-11-28 04:32:57,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 999 states have (on average 1.3233233233233233) internal successors, (1322), 1005 states have internal predecessors, (1322), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-28 04:32:57,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1344 transitions. [2024-11-28 04:32:57,808 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1344 transitions. Word has length 166 [2024-11-28 04:32:57,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:32:57,808 INFO L471 AbstractCegarLoop]: Abstraction has 1015 states and 1344 transitions. [2024-11-28 04:32:57,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.727272727272727) internal successors, (250), 11 states have internal predecessors, (250), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 04:32:57,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1344 transitions. [2024-11-28 04:32:57,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2024-11-28 04:32:57,815 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:32:57,816 INFO L218 NwaCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:32:57,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_139a3035-4e4a-4255-a241-aa14d0cc3097/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:32:58,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_139a3035-4e4a-4255-a241-aa14d0cc3097/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:32:58,017 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:32:58,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:32:58,018 INFO L85 PathProgramCache]: Analyzing trace with hash 2130448368, now seen corresponding path program 1 times [2024-11-28 04:32:58,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:32:58,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598529708] [2024-11-28 04:32:58,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:32:58,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:32:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:33:02,343 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 464 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:33:02,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:33:02,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598529708] [2024-11-28 04:33:02,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598529708] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:33:02,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90587951] [2024-11-28 04:33:02,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:33:02,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:33:02,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_139a3035-4e4a-4255-a241-aa14d0cc3097/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:33:02,348 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_139a3035-4e4a-4255-a241-aa14d0cc3097/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:33:02,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_139a3035-4e4a-4255-a241-aa14d0cc3097/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:33:03,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:33:03,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 1898 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 04:33:03,281 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:33:03,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:33:03,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:33:03,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:33:03,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:33:04,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:33:04,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:33:04,128 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 464 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:33:04,128 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:33:04,946 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 464 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:33:04,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90587951] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:33:04,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:33:04,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 8] total 19 [2024-11-28 04:33:04,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373495102] [2024-11-28 04:33:04,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:33:04,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 04:33:04,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:33:04,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 04:33:04,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=212, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:33:04,954 INFO L87 Difference]: Start difference. First operand 1015 states and 1344 transitions. Second operand has 19 states, 19 states have (on average 37.68421052631579) internal successors, (716), 19 states have internal predecessors, (716), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 04:33:05,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:33:05,739 INFO L93 Difference]: Finished difference Result 4207 states and 5629 transitions. [2024-11-28 04:33:05,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 04:33:05,740 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 37.68421052631579) internal successors, (716), 19 states have internal predecessors, (716), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 397 [2024-11-28 04:33:05,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:33:05,758 INFO L225 Difference]: With dead ends: 4207 [2024-11-28 04:33:05,758 INFO L226 Difference]: Without dead ends: 3799 [2024-11-28 04:33:05,761 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 813 GetRequests, 786 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=224, Invalid=426, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:33:05,762 INFO L435 NwaCegarLoop]: 462 mSDtfsCounter, 6202 mSDsluCounter, 4201 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6234 SdHoareTripleChecker+Valid, 4663 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:33:05,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6234 Valid, 4663 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:33:05,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3799 states. [2024-11-28 04:33:05,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3799 to 1897. [2024-11-28 04:33:05,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1897 states, 1875 states have (on average 1.3162666666666667) internal successors, (2468), 1881 states have internal predecessors, (2468), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-28 04:33:05,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1897 states to 1897 states and 2502 transitions. [2024-11-28 04:33:05,869 INFO L78 Accepts]: Start accepts. Automaton has 1897 states and 2502 transitions. Word has length 397 [2024-11-28 04:33:05,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:33:05,870 INFO L471 AbstractCegarLoop]: Abstraction has 1897 states and 2502 transitions. [2024-11-28 04:33:05,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 37.68421052631579) internal successors, (716), 19 states have internal predecessors, (716), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 04:33:05,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1897 states and 2502 transitions. [2024-11-28 04:33:05,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 860 [2024-11-28 04:33:05,897 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:33:05,897 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:33:05,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_139a3035-4e4a-4255-a241-aa14d0cc3097/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:33:06,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_139a3035-4e4a-4255-a241-aa14d0cc3097/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:33:06,098 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:33:06,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:33:06,099 INFO L85 PathProgramCache]: Analyzing trace with hash 2044801680, now seen corresponding path program 2 times [2024-11-28 04:33:06,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:33:06,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005881450] [2024-11-28 04:33:06,100 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:33:06,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:33:06,496 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:33:06,496 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:33:06,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3471 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3471 trivial. 0 not checked. [2024-11-28 04:33:06,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:33:06,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005881450] [2024-11-28 04:33:06,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005881450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:33:06,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:33:06,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:33:06,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835388526] [2024-11-28 04:33:06,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:33:06,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:33:06,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:33:06,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:33:06,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:33:06,768 INFO L87 Difference]: Start difference. First operand 1897 states and 2502 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:33:07,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:33:07,256 INFO L93 Difference]: Finished difference Result 2317 states and 3073 transitions. [2024-11-28 04:33:07,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:33:07,258 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 859 [2024-11-28 04:33:07,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:33:07,267 INFO L225 Difference]: With dead ends: 2317 [2024-11-28 04:33:07,268 INFO L226 Difference]: Without dead ends: 1912 [2024-11-28 04:33:07,269 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:33:07,270 INFO L435 NwaCegarLoop]: 410 mSDtfsCounter, 10 mSDsluCounter, 1347 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1757 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:33:07,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1757 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:33:07,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2024-11-28 04:33:07,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1903. [2024-11-28 04:33:07,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1903 states, 1881 states have (on average 1.3152578415736311) internal successors, (2474), 1887 states have internal predecessors, (2474), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-28 04:33:07,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 2508 transitions. [2024-11-28 04:33:07,350 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 2508 transitions. Word has length 859 [2024-11-28 04:33:07,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:33:07,352 INFO L471 AbstractCegarLoop]: Abstraction has 1903 states and 2508 transitions. [2024-11-28 04:33:07,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:33:07,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 2508 transitions. [2024-11-28 04:33:07,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 861 [2024-11-28 04:33:07,384 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:33:07,384 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:33:07,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 04:33:07,385 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:33:07,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:33:07,385 INFO L85 PathProgramCache]: Analyzing trace with hash -995243797, now seen corresponding path program 1 times [2024-11-28 04:33:07,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:33:07,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063501966] [2024-11-28 04:33:07,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:33:07,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:35:30,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:35:32,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3471 backedges. 515 proven. 3 refuted. 0 times theorem prover too weak. 2953 trivial. 0 not checked. [2024-11-28 04:35:32,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:35:32,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063501966] [2024-11-28 04:35:32,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063501966] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:35:32,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701368227] [2024-11-28 04:35:32,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:35:32,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:35:32,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_139a3035-4e4a-4255-a241-aa14d0cc3097/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:35:32,571 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_139a3035-4e4a-4255-a241-aa14d0cc3097/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:35:32,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_139a3035-4e4a-4255-a241-aa14d0cc3097/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:35:48,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:35:48,340 INFO L256 TraceCheckSpWp]: Trace formula consists of 4161 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-28 04:35:48,361 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:35:48,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:35:48,410 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 14 treesize of output 15 [2024-11-28 04:35:49,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3471 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 3163 trivial. 0 not checked. [2024-11-28 04:35:49,629 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:35:49,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701368227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:35:49,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:35:49,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [4] total 14 [2024-11-28 04:35:49,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361691209] [2024-11-28 04:35:49,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:35:49,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:35:49,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:35:49,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:35:49,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:35:49,636 INFO L87 Difference]: Start difference. First operand 1903 states and 2508 transitions. Second operand has 12 states, 12 states have (on average 16.333333333333332) internal successors, (196), 12 states have internal predecessors, (196), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:35:53,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:35:55,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:35:55,009 INFO L93 Difference]: Finished difference Result 3926 states and 5183 transitions. [2024-11-28 04:35:55,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:35:55,010 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 16.333333333333332) internal successors, (196), 12 states have internal predecessors, (196), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 860 [2024-11-28 04:35:55,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:35:55,018 INFO L225 Difference]: With dead ends: 3926 [2024-11-28 04:35:55,018 INFO L226 Difference]: Without dead ends: 2068 [2024-11-28 04:35:55,021 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 871 GetRequests, 851 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:35:55,022 INFO L435 NwaCegarLoop]: 426 mSDtfsCounter, 673 mSDsluCounter, 2917 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 3343 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:35:55,022 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [675 Valid, 3343 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-28 04:35:55,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2068 states. [2024-11-28 04:35:55,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2068 to 1903. [2024-11-28 04:35:55,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1903 states, 1881 states have (on average 1.3147262094630516) internal successors, (2473), 1887 states have internal predecessors, (2473), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-28 04:35:55,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 2507 transitions. [2024-11-28 04:35:55,177 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 2507 transitions. Word has length 860 [2024-11-28 04:35:55,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:35:55,179 INFO L471 AbstractCegarLoop]: Abstraction has 1903 states and 2507 transitions. [2024-11-28 04:35:55,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.333333333333332) internal successors, (196), 12 states have internal predecessors, (196), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:35:55,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 2507 transitions. [2024-11-28 04:35:55,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 862 [2024-11-28 04:35:55,189 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:35:55,189 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:35:55,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_139a3035-4e4a-4255-a241-aa14d0cc3097/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:35:55,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_139a3035-4e4a-4255-a241-aa14d0cc3097/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:35:55,391 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:35:55,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:35:55,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1706068731, now seen corresponding path program 1 times [2024-11-28 04:35:55,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:35:55,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029625543] [2024-11-28 04:35:55,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:35:55,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:39:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:39:23,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3471 backedges. 515 proven. 3 refuted. 0 times theorem prover too weak. 2953 trivial. 0 not checked. [2024-11-28 04:39:23,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:39:23,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029625543] [2024-11-28 04:39:23,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029625543] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:39:23,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082518187] [2024-11-28 04:39:23,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:39:23,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:39:23,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_139a3035-4e4a-4255-a241-aa14d0cc3097/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:39:23,511 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_139a3035-4e4a-4255-a241-aa14d0cc3097/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:39:23,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_139a3035-4e4a-4255-a241-aa14d0cc3097/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:40:00,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:40:01,013 INFO L256 TraceCheckSpWp]: Trace formula consists of 4162 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 04:40:01,041 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:40:01,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3471 backedges. 959 proven. 0 refuted. 0 times theorem prover too weak. 2512 trivial. 0 not checked. [2024-11-28 04:40:01,344 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:40:01,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082518187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:40:01,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:40:01,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-28 04:40:01,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936584790] [2024-11-28 04:40:01,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:40:01,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:40:01,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:40:01,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:40:01,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:40:01,350 INFO L87 Difference]: Start difference. First operand 1903 states and 2507 transitions. Second operand has 7 states, 7 states have (on average 38.0) internal successors, (266), 7 states have internal predecessors, (266), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:40:01,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:40:01,840 INFO L93 Difference]: Finished difference Result 3806 states and 5038 transitions. [2024-11-28 04:40:01,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:40:01,842 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 38.0) internal successors, (266), 7 states have internal predecessors, (266), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 861 [2024-11-28 04:40:01,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:40:01,862 INFO L225 Difference]: With dead ends: 3806 [2024-11-28 04:40:01,866 INFO L226 Difference]: Without dead ends: 1948 [2024-11-28 04:40:01,871 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 864 GetRequests, 857 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:40:01,878 INFO L435 NwaCegarLoop]: 417 mSDtfsCounter, 12 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:40:01,879 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1848 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:40:01,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2024-11-28 04:40:02,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1939. [2024-11-28 04:40:02,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1939 states, 1917 states have (on average 1.3082942097026604) internal successors, (2508), 1923 states have internal predecessors, (2508), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-28 04:40:02,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1939 states to 1939 states and 2542 transitions. [2024-11-28 04:40:02,030 INFO L78 Accepts]: Start accepts. Automaton has 1939 states and 2542 transitions. Word has length 861 [2024-11-28 04:40:02,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:40:02,034 INFO L471 AbstractCegarLoop]: Abstraction has 1939 states and 2542 transitions. [2024-11-28 04:40:02,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 38.0) internal successors, (266), 7 states have internal predecessors, (266), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:40:02,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1939 states and 2542 transitions. [2024-11-28 04:40:02,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 872 [2024-11-28 04:40:02,066 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:40:02,069 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 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] [2024-11-28 04:40:02,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_139a3035-4e4a-4255-a241-aa14d0cc3097/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:40:02,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_139a3035-4e4a-4255-a241-aa14d0cc3097/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:40:02,271 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:40:02,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:40:02,274 INFO L85 PathProgramCache]: Analyzing trace with hash -582671872, now seen corresponding path program 1 times [2024-11-28 04:40:02,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:40:02,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628797520] [2024-11-28 04:40:02,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:40:02,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:40:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:40:05,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3507 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 3181 trivial. 0 not checked. [2024-11-28 04:40:05,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:40:05,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628797520] [2024-11-28 04:40:05,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628797520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:40:05,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:40:05,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:40:05,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403403990] [2024-11-28 04:40:05,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:40:05,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:40:05,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:40:05,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:40:05,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:40:05,422 INFO L87 Difference]: Start difference. First operand 1939 states and 2542 transitions. Second operand has 6 states, 6 states have (on average 33.5) internal successors, (201), 6 states have internal predecessors, (201), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:40:05,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:40:05,837 INFO L93 Difference]: Finished difference Result 3860 states and 5082 transitions. [2024-11-28 04:40:05,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:40:05,838 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 33.5) internal successors, (201), 6 states have internal predecessors, (201), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 871 [2024-11-28 04:40:05,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:40:05,845 INFO L225 Difference]: With dead ends: 3860 [2024-11-28 04:40:05,846 INFO L226 Difference]: Without dead ends: 1969 [2024-11-28 04:40:05,848 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:40:05,850 INFO L435 NwaCegarLoop]: 414 mSDtfsCounter, 8 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1774 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:40:05,850 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1774 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:40:05,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1969 states. [2024-11-28 04:40:05,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1969 to 1969. [2024-11-28 04:40:05,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1969 states, 1947 states have (on average 1.3035439137134053) internal successors, (2538), 1953 states have internal predecessors, (2538), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-28 04:40:05,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1969 states to 1969 states and 2572 transitions. [2024-11-28 04:40:05,927 INFO L78 Accepts]: Start accepts. Automaton has 1969 states and 2572 transitions. Word has length 871 [2024-11-28 04:40:05,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:40:05,928 INFO L471 AbstractCegarLoop]: Abstraction has 1969 states and 2572 transitions. [2024-11-28 04:40:05,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.5) internal successors, (201), 6 states have internal predecessors, (201), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:40:05,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1969 states and 2572 transitions. [2024-11-28 04:40:05,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 873 [2024-11-28 04:40:05,949 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:40:05,949 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:40:05,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 04:40:05,950 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:40:05,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:40:05,951 INFO L85 PathProgramCache]: Analyzing trace with hash 634652900, now seen corresponding path program 1 times [2024-11-28 04:40:05,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:40:05,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660926953] [2024-11-28 04:40:05,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:40:05,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:40:06,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:40:08,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3516 backedges. 353 proven. 0 refuted. 0 times theorem prover too weak. 3163 trivial. 0 not checked. [2024-11-28 04:40:08,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:40:08,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660926953] [2024-11-28 04:40:08,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660926953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:40:08,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:40:08,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:40:08,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970448728] [2024-11-28 04:40:08,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:40:08,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:40:08,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:40:08,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:40:08,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:40:08,215 INFO L87 Difference]: Start difference. First operand 1969 states and 2572 transitions. Second operand has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:40:08,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:40:08,687 INFO L93 Difference]: Finished difference Result 3930 states and 5158 transitions. [2024-11-28 04:40:08,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:40:08,688 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 872 [2024-11-28 04:40:08,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:40:08,696 INFO L225 Difference]: With dead ends: 3930 [2024-11-28 04:40:08,696 INFO L226 Difference]: Without dead ends: 2019 [2024-11-28 04:40:08,698 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:40:08,699 INFO L435 NwaCegarLoop]: 404 mSDtfsCounter, 12 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2104 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:40:08,700 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2104 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:40:08,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2024-11-28 04:40:08,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2009. [2024-11-28 04:40:08,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 1987 states have (on average 1.3024660291897332) internal successors, (2588), 1993 states have internal predecessors, (2588), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-28 04:40:08,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 2622 transitions. [2024-11-28 04:40:08,770 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 2622 transitions. Word has length 872 [2024-11-28 04:40:08,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:40:08,771 INFO L471 AbstractCegarLoop]: Abstraction has 2009 states and 2622 transitions. [2024-11-28 04:40:08,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:40:08,771 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 2622 transitions. [2024-11-28 04:40:08,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 882 [2024-11-28 04:40:08,784 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:40:08,785 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:40:08,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 04:40:08,785 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:40:08,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:40:08,787 INFO L85 PathProgramCache]: Analyzing trace with hash 491346644, now seen corresponding path program 1 times [2024-11-28 04:40:08,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:40:08,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17192447] [2024-11-28 04:40:08,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:40:08,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:40:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:40:12,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3543 backedges. 1007 proven. 0 refuted. 0 times theorem prover too weak. 2536 trivial. 0 not checked. [2024-11-28 04:40:12,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:40:12,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17192447] [2024-11-28 04:40:12,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17192447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:40:12,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:40:12,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 04:40:12,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523817867] [2024-11-28 04:40:12,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:40:12,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:40:12,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:40:12,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:40:12,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:40:12,436 INFO L87 Difference]: Start difference. First operand 2009 states and 2622 transitions. Second operand has 9 states, 9 states have (on average 30.666666666666668) internal successors, (276), 9 states have internal predecessors, (276), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:40:13,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:40:13,215 INFO L93 Difference]: Finished difference Result 3891 states and 5114 transitions. [2024-11-28 04:40:13,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:40:13,217 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 30.666666666666668) internal successors, (276), 9 states have internal predecessors, (276), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 881 [2024-11-28 04:40:13,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:40:13,228 INFO L225 Difference]: With dead ends: 3891 [2024-11-28 04:40:13,229 INFO L226 Difference]: Without dead ends: 2108 [2024-11-28 04:40:13,231 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:40:13,232 INFO L435 NwaCegarLoop]: 417 mSDtfsCounter, 27 mSDsluCounter, 2471 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2888 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:40:13,233 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2888 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:40:13,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2024-11-28 04:40:13,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 2081. [2024-11-28 04:40:13,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2081 states, 2059 states have (on average 1.3006313744536182) internal successors, (2678), 2065 states have internal predecessors, (2678), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-28 04:40:13,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2081 states to 2081 states and 2712 transitions. [2024-11-28 04:40:13,314 INFO L78 Accepts]: Start accepts. Automaton has 2081 states and 2712 transitions. Word has length 881 [2024-11-28 04:40:13,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:40:13,316 INFO L471 AbstractCegarLoop]: Abstraction has 2081 states and 2712 transitions. [2024-11-28 04:40:13,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 30.666666666666668) internal successors, (276), 9 states have internal predecessors, (276), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:40:13,316 INFO L276 IsEmpty]: Start isEmpty. Operand 2081 states and 2712 transitions. [2024-11-28 04:40:13,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 891 [2024-11-28 04:40:13,325 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:40:13,325 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:40:13,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 04:40:13,326 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:40:13,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:40:13,328 INFO L85 PathProgramCache]: Analyzing trace with hash -292550205, now seen corresponding path program 1 times [2024-11-28 04:40:13,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:40:13,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144967095] [2024-11-28 04:40:13,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:40:13,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms