./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/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_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/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_bf795254-1689-4ae9-b81c-b416c67913a8/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 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:44:58,782 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:44:58,892 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:44:58,900 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:44:58,901 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:44:58,942 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:44:58,944 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:44:58,945 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:44:58,945 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:44:58,946 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:44:58,947 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:44:58,947 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:44:58,948 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:44:58,948 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:44:58,948 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:44:58,948 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:44:58,948 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:44:58,948 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:44:58,948 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:44:58,948 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:44:58,949 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:44:58,949 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:44:58,949 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:44:58,949 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:44:58,949 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:44:58,949 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:44:58,949 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:44:58,949 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:44:58,949 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:44:58,949 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:44:58,950 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:44:58,950 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:44:58,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:44:58,951 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:44:58,952 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:44:58,952 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:44:58,952 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:44:58,952 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:44:58,952 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:44:58,953 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:44:58,953 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:44:58,953 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:44:58,953 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:44:58,953 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:44:58,954 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:44:58,954 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:44:58,954 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:44:58,954 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:44:58,954 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_bf795254-1689-4ae9-b81c-b416c67913a8/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 -> 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c [2024-11-28 02:44:59,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:44:59,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:44:59,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:44:59,319 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:44:59,319 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:44:59,320 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.i [2024-11-28 02:45:02,540 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/data/f69ffd86d/2ac296caf038455faabe50d87a869f1e/FLAG259258518 [2024-11-28 02:45:02,985 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:45:02,986 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.i [2024-11-28 02:45:03,013 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/data/f69ffd86d/2ac296caf038455faabe50d87a869f1e/FLAG259258518 [2024-11-28 02:45:03,028 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/data/f69ffd86d/2ac296caf038455faabe50d87a869f1e [2024-11-28 02:45:03,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:45:03,032 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:45:03,033 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:45:03,033 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:45:03,038 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:45:03,039 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:45:03" (1/1) ... [2024-11-28 02:45:03,040 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cb89734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:03, skipping insertion in model container [2024-11-28 02:45:03,041 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:45:03" (1/1) ... [2024-11-28 02:45:03,102 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:45:03,620 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_bf795254-1689-4ae9-b81c-b416c67913a8/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.i[37435,37448] [2024-11-28 02:45:03,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:45:03,810 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:45:03,870 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_bf795254-1689-4ae9-b81c-b416c67913a8/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.i[37435,37448] [2024-11-28 02:45:04,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:45:04,059 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:45:04,059 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:04 WrapperNode [2024-11-28 02:45:04,060 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:45:04,061 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:45:04,061 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:45:04,061 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:45:04,072 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:04" (1/1) ... [2024-11-28 02:45:04,110 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:04" (1/1) ... [2024-11-28 02:45:04,189 INFO L138 Inliner]: procedures = 207, calls = 272, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1408 [2024-11-28 02:45:04,190 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:45:04,191 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:45:04,191 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:45:04,191 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:45:04,203 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:04" (1/1) ... [2024-11-28 02:45:04,203 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:04" (1/1) ... [2024-11-28 02:45:04,215 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:04" (1/1) ... [2024-11-28 02:45:04,353 INFO L175 MemorySlicer]: Split 254 memory accesses to 3 slices as follows [2, 34, 218]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 4, 50]. [2024-11-28 02:45:04,353 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:04" (1/1) ... [2024-11-28 02:45:04,354 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:04" (1/1) ... [2024-11-28 02:45:04,428 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:04" (1/1) ... [2024-11-28 02:45:04,433 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:04" (1/1) ... [2024-11-28 02:45:04,453 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:04" (1/1) ... [2024-11-28 02:45:04,458 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:04" (1/1) ... [2024-11-28 02:45:04,464 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:04" (1/1) ... [2024-11-28 02:45:04,475 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:45:04,476 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:45:04,476 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:45:04,477 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:45:04,478 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:04" (1/1) ... [2024-11-28 02:45:04,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:45:04,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:45:04,523 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:45:04,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:45:04,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-28 02:45:04,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-28 02:45:04,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-28 02:45:04,571 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-28 02:45:04,572 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-28 02:45:04,572 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-28 02:45:04,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:45:04,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 02:45:04,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 02:45:04,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 02:45:04,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:45:04,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:45:04,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:45:04,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 02:45:04,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:45:04,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:45:04,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 02:45:04,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 02:45:04,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:45:04,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 02:45:04,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 02:45:04,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 02:45:04,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:45:04,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:45:04,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:45:04,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:45:04,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:45:04,995 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:45:04,998 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:45:07,353 INFO L? ?]: Removed 320 outVars from TransFormulas that were not future-live. [2024-11-28 02:45:07,353 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:45:07,392 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:45:07,393 INFO L312 CfgBuilder]: Removed 36 assume(true) statements. [2024-11-28 02:45:07,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:45:07 BoogieIcfgContainer [2024-11-28 02:45:07,394 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:45:07,397 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:45:07,397 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:45:07,403 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:45:07,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:45:03" (1/3) ... [2024-11-28 02:45:07,404 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ab68d68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:45:07, skipping insertion in model container [2024-11-28 02:45:07,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:04" (2/3) ... [2024-11-28 02:45:07,406 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ab68d68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:45:07, skipping insertion in model container [2024-11-28 02:45:07,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:45:07" (3/3) ... [2024-11-28 02:45:07,409 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_BER_nondet_test2-2.i [2024-11-28 02:45:07,430 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:45:07,432 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_BER_nondet_test2-2.i that has 4 procedures, 413 locations, 1 initial locations, 38 loop locations, and 1 error locations. [2024-11-28 02:45:07,544 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:45:07,562 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;@4f061f2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:45:07,562 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:45:07,570 INFO L276 IsEmpty]: Start isEmpty. Operand has 405 states, 399 states have (on average 1.6140350877192982) internal successors, (644), 400 states have internal predecessors, (644), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:45:07,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 02:45:07,577 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:45:07,578 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:07,578 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:45:07,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:07,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1885086492, now seen corresponding path program 1 times [2024-11-28 02:45:07,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:07,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101601720] [2024-11-28 02:45:07,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:07,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:45:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:07,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:45:07,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:07,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101601720] [2024-11-28 02:45:07,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101601720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:07,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:45:07,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:45:07,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998089023] [2024-11-28 02:45:07,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:07,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:45:07,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:07,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:45:07,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:45:07,873 INFO L87 Difference]: Start difference. First operand has 405 states, 399 states have (on average 1.6140350877192982) internal successors, (644), 400 states have internal predecessors, (644), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:07,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:45:07,966 INFO L93 Difference]: Finished difference Result 807 states and 1296 transitions. [2024-11-28 02:45:07,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:45:07,969 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-28 02:45:07,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:45:07,979 INFO L225 Difference]: With dead ends: 807 [2024-11-28 02:45:07,979 INFO L226 Difference]: Without dead ends: 367 [2024-11-28 02:45:07,984 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 02:45:07,987 INFO L435 NwaCegarLoop]: 582 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:45:07,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:45:08,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-11-28 02:45:08,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2024-11-28 02:45:08,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 362 states have (on average 1.4475138121546962) internal successors, (524), 362 states have internal predecessors, (524), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:45:08,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 530 transitions. [2024-11-28 02:45:08,071 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 530 transitions. Word has length 11 [2024-11-28 02:45:08,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:45:08,071 INFO L471 AbstractCegarLoop]: Abstraction has 367 states and 530 transitions. [2024-11-28 02:45:08,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:08,071 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 530 transitions. [2024-11-28 02:45:08,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 02:45:08,076 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:45:08,076 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:08,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:45:08,076 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:45:08,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:08,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1376406264, now seen corresponding path program 1 times [2024-11-28 02:45:08,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:08,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733215792] [2024-11-28 02:45:08,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:08,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:45:08,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:08,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:45:08,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:08,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733215792] [2024-11-28 02:45:08,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733215792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:08,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:45:08,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:45:08,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535760973] [2024-11-28 02:45:08,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:08,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:45:08,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:08,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:45:08,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:45:08,749 INFO L87 Difference]: Start difference. First operand 367 states and 530 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:08,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:45:08,955 INFO L93 Difference]: Finished difference Result 484 states and 698 transitions. [2024-11-28 02:45:08,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:45:08,957 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-28 02:45:08,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:45:08,959 INFO L225 Difference]: With dead ends: 484 [2024-11-28 02:45:08,963 INFO L226 Difference]: Without dead ends: 324 [2024-11-28 02:45:08,964 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 02:45:08,965 INFO L435 NwaCegarLoop]: 427 mSDtfsCounter, 30 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:45:08,967 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1262 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:45:08,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-11-28 02:45:08,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2024-11-28 02:45:09,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 319 states have (on average 1.3981191222570533) internal successors, (446), 319 states have internal predecessors, (446), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:45:09,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 452 transitions. [2024-11-28 02:45:09,003 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 452 transitions. Word has length 66 [2024-11-28 02:45:09,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:45:09,006 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 452 transitions. [2024-11-28 02:45:09,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:09,006 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 452 transitions. [2024-11-28 02:45:09,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 02:45:09,012 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:45:09,012 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:09,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:45:09,014 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:45:09,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:09,015 INFO L85 PathProgramCache]: Analyzing trace with hash 491521940, now seen corresponding path program 1 times [2024-11-28 02:45:09,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:09,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374624121] [2024-11-28 02:45:09,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:09,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:45:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:10,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:45:10,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:10,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374624121] [2024-11-28 02:45:10,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374624121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:10,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:45:10,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:45:10,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419064497] [2024-11-28 02:45:10,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:10,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:45:10,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:10,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:45:10,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:45:10,130 INFO L87 Difference]: Start difference. First operand 324 states and 452 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:10,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:45:10,509 INFO L93 Difference]: Finished difference Result 760 states and 1056 transitions. [2024-11-28 02:45:10,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:45:10,510 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-28 02:45:10,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:45:10,516 INFO L225 Difference]: With dead ends: 760 [2024-11-28 02:45:10,516 INFO L226 Difference]: Without dead ends: 640 [2024-11-28 02:45:10,518 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:45:10,520 INFO L435 NwaCegarLoop]: 433 mSDtfsCounter, 430 mSDsluCounter, 2147 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 2580 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:45:10,520 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 2580 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:45:10,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2024-11-28 02:45:10,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 326. [2024-11-28 02:45:10,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 321 states have (on average 1.395638629283489) internal successors, (448), 321 states have internal predecessors, (448), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:45:10,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 454 transitions. [2024-11-28 02:45:10,570 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 454 transitions. Word has length 66 [2024-11-28 02:45:10,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:45:10,571 INFO L471 AbstractCegarLoop]: Abstraction has 326 states and 454 transitions. [2024-11-28 02:45:10,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:10,571 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 454 transitions. [2024-11-28 02:45:10,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-28 02:45:10,578 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:45:10,578 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:10,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:45:10,584 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:45:10,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:10,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1887881346, now seen corresponding path program 1 times [2024-11-28 02:45:10,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:10,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175708715] [2024-11-28 02:45:10,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:10,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:45:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:11,141 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 02:45:11,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:11,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175708715] [2024-11-28 02:45:11,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175708715] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:11,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:45:11,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:45:11,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388363121] [2024-11-28 02:45:11,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:11,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:45:11,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:11,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:45:11,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:45:11,147 INFO L87 Difference]: Start difference. First operand 326 states and 454 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:11,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:45:11,312 INFO L93 Difference]: Finished difference Result 604 states and 836 transitions. [2024-11-28 02:45:11,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:45:11,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2024-11-28 02:45:11,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:45:11,317 INFO L225 Difference]: With dead ends: 604 [2024-11-28 02:45:11,317 INFO L226 Difference]: Without dead ends: 283 [2024-11-28 02:45:11,319 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 02:45:11,320 INFO L435 NwaCegarLoop]: 340 mSDtfsCounter, 36 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:45:11,322 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1006 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:45:11,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-28 02:45:11,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2024-11-28 02:45:11,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 278 states have (on average 1.330935251798561) internal successors, (370), 278 states have internal predecessors, (370), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:45:11,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 376 transitions. [2024-11-28 02:45:11,344 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 376 transitions. Word has length 143 [2024-11-28 02:45:11,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:45:11,344 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 376 transitions. [2024-11-28 02:45:11,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:11,344 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 376 transitions. [2024-11-28 02:45:11,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-28 02:45:11,347 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:45:11,347 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:11,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:45:11,347 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:45:11,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:11,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1628773910, now seen corresponding path program 1 times [2024-11-28 02:45:11,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:11,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077910566] [2024-11-28 02:45:11,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:11,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:45:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:11,703 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 02:45:11,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:11,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077910566] [2024-11-28 02:45:11,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077910566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:11,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:45:11,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:45:11,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723718791] [2024-11-28 02:45:11,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:11,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:45:11,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:11,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:45:11,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:45:11,708 INFO L87 Difference]: Start difference. First operand 283 states and 376 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:11,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:45:11,795 INFO L93 Difference]: Finished difference Result 555 states and 741 transitions. [2024-11-28 02:45:11,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:45:11,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2024-11-28 02:45:11,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:45:11,798 INFO L225 Difference]: With dead ends: 555 [2024-11-28 02:45:11,800 INFO L226 Difference]: Without dead ends: 277 [2024-11-28 02:45:11,801 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 02:45:11,802 INFO L435 NwaCegarLoop]: 342 mSDtfsCounter, 9 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:45:11,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1007 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:45:11,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-11-28 02:45:11,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2024-11-28 02:45:11,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 272 states have (on average 1.3235294117647058) internal successors, (360), 272 states have internal predecessors, (360), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:45:11,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 366 transitions. [2024-11-28 02:45:11,822 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 366 transitions. Word has length 143 [2024-11-28 02:45:11,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:45:11,824 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 366 transitions. [2024-11-28 02:45:11,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:11,825 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 366 transitions. [2024-11-28 02:45:11,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-28 02:45:11,830 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:45:11,830 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:11,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:45:11,831 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:45:11,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:11,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1638022670, now seen corresponding path program 1 times [2024-11-28 02:45:11,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:11,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787576567] [2024-11-28 02:45:11,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:11,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:45:11,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:12,118 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 02:45:12,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:12,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787576567] [2024-11-28 02:45:12,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787576567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:12,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:45:12,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:45:12,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744845632] [2024-11-28 02:45:12,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:12,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:45:12,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:12,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:45:12,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:45:12,120 INFO L87 Difference]: Start difference. First operand 277 states and 366 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:12,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:45:12,260 INFO L93 Difference]: Finished difference Result 726 states and 964 transitions. [2024-11-28 02:45:12,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:45:12,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2024-11-28 02:45:12,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:45:12,266 INFO L225 Difference]: With dead ends: 726 [2024-11-28 02:45:12,266 INFO L226 Difference]: Without dead ends: 454 [2024-11-28 02:45:12,269 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:45:12,270 INFO L435 NwaCegarLoop]: 468 mSDtfsCounter, 173 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:45:12,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 811 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:45:12,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2024-11-28 02:45:12,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 452. [2024-11-28 02:45:12,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 447 states have (on average 1.3288590604026846) internal successors, (594), 447 states have internal predecessors, (594), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:45:12,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 600 transitions. [2024-11-28 02:45:12,301 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 600 transitions. Word has length 143 [2024-11-28 02:45:12,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:45:12,302 INFO L471 AbstractCegarLoop]: Abstraction has 452 states and 600 transitions. [2024-11-28 02:45:12,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:12,303 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 600 transitions. [2024-11-28 02:45:12,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-28 02:45:12,305 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:45:12,305 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:12,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:45:12,306 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:45:12,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:12,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1777217948, now seen corresponding path program 1 times [2024-11-28 02:45:12,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:12,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490358241] [2024-11-28 02:45:12,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:12,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:45:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:12,766 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 02:45:12,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:12,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490358241] [2024-11-28 02:45:12,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490358241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:12,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:45:12,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:45:12,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705188736] [2024-11-28 02:45:12,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:12,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:45:12,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:12,770 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:45:12,771 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:45:12,771 INFO L87 Difference]: Start difference. First operand 452 states and 600 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:45:13,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:45:13,674 INFO L93 Difference]: Finished difference Result 900 states and 1196 transitions. [2024-11-28 02:45:13,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:45:13,677 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 158 [2024-11-28 02:45:13,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:45:13,683 INFO L225 Difference]: With dead ends: 900 [2024-11-28 02:45:13,683 INFO L226 Difference]: Without dead ends: 535 [2024-11-28 02:45:13,684 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 02:45:13,685 INFO L435 NwaCegarLoop]: 426 mSDtfsCounter, 988 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:45:13,685 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 965 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 02:45:13,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2024-11-28 02:45:13,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 359. [2024-11-28 02:45:13,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 354 states have (on average 1.3192090395480225) internal successors, (467), 354 states have internal predecessors, (467), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:45:13,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 473 transitions. [2024-11-28 02:45:13,729 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 473 transitions. Word has length 158 [2024-11-28 02:45:13,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:45:13,731 INFO L471 AbstractCegarLoop]: Abstraction has 359 states and 473 transitions. [2024-11-28 02:45:13,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:45:13,731 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 473 transitions. [2024-11-28 02:45:13,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-28 02:45:13,736 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:45:13,736 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:13,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:45:13,736 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:45:13,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:13,737 INFO L85 PathProgramCache]: Analyzing trace with hash 124744612, now seen corresponding path program 1 times [2024-11-28 02:45:13,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:13,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468974911] [2024-11-28 02:45:13,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:13,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:45:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:14,656 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:45:14,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:14,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468974911] [2024-11-28 02:45:14,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468974911] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:45:14,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83426087] [2024-11-28 02:45:14,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:14,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:45:14,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:45:14,664 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:45:14,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:45:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:15,266 INFO L256 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-28 02:45:15,281 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:45:15,342 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 02:45:16,608 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 02:45:16,609 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:45:16,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83426087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:16,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:45:16,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2024-11-28 02:45:16,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887291389] [2024-11-28 02:45:16,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:16,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:45:16,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:16,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:45:16,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:45:16,611 INFO L87 Difference]: Start difference. First operand 359 states and 473 transitions. Second operand has 10 states, 10 states have (on average 16.0) internal successors, (160), 10 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:45:17,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:45:17,942 INFO L93 Difference]: Finished difference Result 662 states and 872 transitions. [2024-11-28 02:45:17,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:45:17,945 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.0) internal successors, (160), 10 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 168 [2024-11-28 02:45:17,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:45:17,947 INFO L225 Difference]: With dead ends: 662 [2024-11-28 02:45:17,948 INFO L226 Difference]: Without dead ends: 545 [2024-11-28 02:45:17,950 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:45:17,951 INFO L435 NwaCegarLoop]: 356 mSDtfsCounter, 357 mSDsluCounter, 1704 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 2060 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:45:17,951 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 2060 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 02:45:17,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2024-11-28 02:45:17,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 396. [2024-11-28 02:45:17,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 391 states have (on average 1.29923273657289) internal successors, (508), 391 states have internal predecessors, (508), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:45:17,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 514 transitions. [2024-11-28 02:45:17,986 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 514 transitions. Word has length 168 [2024-11-28 02:45:17,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:45:17,987 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 514 transitions. [2024-11-28 02:45:17,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.0) internal successors, (160), 10 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:45:17,987 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 514 transitions. [2024-11-28 02:45:17,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-28 02:45:17,993 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:45:17,993 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:18,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:45:18,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:45:18,198 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:45:18,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:18,198 INFO L85 PathProgramCache]: Analyzing trace with hash 828522424, now seen corresponding path program 1 times [2024-11-28 02:45:18,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:18,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301285368] [2024-11-28 02:45:18,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:18,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:45:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:18,853 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:45:18,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:18,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301285368] [2024-11-28 02:45:18,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301285368] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:45:18,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066423679] [2024-11-28 02:45:18,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:18,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:45:18,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:45:18,856 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:45:18,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:45:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:19,335 INFO L256 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 02:45:19,344 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:45:19,544 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 02:45:19,546 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:45:19,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066423679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:19,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:45:19,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2024-11-28 02:45:19,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707590192] [2024-11-28 02:45:19,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:19,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:45:19,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:19,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:45:19,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:45:19,548 INFO L87 Difference]: Start difference. First operand 396 states and 514 transitions. Second operand has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:45:19,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:45:19,923 INFO L93 Difference]: Finished difference Result 762 states and 1001 transitions. [2024-11-28 02:45:19,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:45:19,924 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 169 [2024-11-28 02:45:19,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:45:19,926 INFO L225 Difference]: With dead ends: 762 [2024-11-28 02:45:19,926 INFO L226 Difference]: Without dead ends: 406 [2024-11-28 02:45:19,929 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:45:19,931 INFO L435 NwaCegarLoop]: 344 mSDtfsCounter, 8 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:45:19,932 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1456 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:45:19,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2024-11-28 02:45:19,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 404. [2024-11-28 02:45:19,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 399 states have (on average 1.2932330827067668) internal successors, (516), 399 states have internal predecessors, (516), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:45:19,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 522 transitions. [2024-11-28 02:45:19,955 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 522 transitions. Word has length 169 [2024-11-28 02:45:19,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:45:19,956 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 522 transitions. [2024-11-28 02:45:19,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:45:19,956 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 522 transitions. [2024-11-28 02:45:19,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-28 02:45:19,959 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:45:19,959 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:19,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:45:20,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-28 02:45:20,163 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:45:20,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:20,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1151634895, now seen corresponding path program 1 times [2024-11-28 02:45:20,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:20,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364804702] [2024-11-28 02:45:20,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:20,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:45:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:20,678 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 02:45:20,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:20,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364804702] [2024-11-28 02:45:20,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364804702] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:20,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:45:20,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:45:20,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702045225] [2024-11-28 02:45:20,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:20,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:45:20,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:20,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:45:20,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:45:20,680 INFO L87 Difference]: Start difference. First operand 404 states and 522 transitions. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:45:21,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:45:21,133 INFO L93 Difference]: Finished difference Result 764 states and 997 transitions. [2024-11-28 02:45:21,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:45:21,134 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 170 [2024-11-28 02:45:21,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:45:21,136 INFO L225 Difference]: With dead ends: 764 [2024-11-28 02:45:21,136 INFO L226 Difference]: Without dead ends: 414 [2024-11-28 02:45:21,136 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 02:45:21,137 INFO L435 NwaCegarLoop]: 336 mSDtfsCounter, 10 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:45:21,137 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1700 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:45:21,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-11-28 02:45:21,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 412. [2024-11-28 02:45:21,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 407 states have (on average 1.2923832923832923) internal successors, (526), 407 states have internal predecessors, (526), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:45:21,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 532 transitions. [2024-11-28 02:45:21,157 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 532 transitions. Word has length 170 [2024-11-28 02:45:21,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:45:21,157 INFO L471 AbstractCegarLoop]: Abstraction has 412 states and 532 transitions. [2024-11-28 02:45:21,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:45:21,158 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 532 transitions. [2024-11-28 02:45:21,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-28 02:45:21,160 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:45:21,160 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:21,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:45:21,161 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:45:21,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:21,162 INFO L85 PathProgramCache]: Analyzing trace with hash -732469539, now seen corresponding path program 1 times [2024-11-28 02:45:21,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:21,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982888371] [2024-11-28 02:45:21,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:21,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:45:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:21,664 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 02:45:21,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:21,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982888371] [2024-11-28 02:45:21,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982888371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:21,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:45:21,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:45:21,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923825706] [2024-11-28 02:45:21,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:21,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:45:21,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:21,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:45:21,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:45:21,669 INFO L87 Difference]: Start difference. First operand 412 states and 532 transitions. Second operand has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:45:22,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:45:22,048 INFO L93 Difference]: Finished difference Result 779 states and 1017 transitions. [2024-11-28 02:45:22,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:45:22,049 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 171 [2024-11-28 02:45:22,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:45:22,052 INFO L225 Difference]: With dead ends: 779 [2024-11-28 02:45:22,053 INFO L226 Difference]: Without dead ends: 418 [2024-11-28 02:45:22,053 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 02:45:22,055 INFO L435 NwaCegarLoop]: 348 mSDtfsCounter, 4 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:45:22,055 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1185 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:45:22,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2024-11-28 02:45:22,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2024-11-28 02:45:22,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 413 states have (on average 1.2881355932203389) internal successors, (532), 413 states have internal predecessors, (532), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:45:22,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 538 transitions. [2024-11-28 02:45:22,078 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 538 transitions. Word has length 171 [2024-11-28 02:45:22,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:45:22,078 INFO L471 AbstractCegarLoop]: Abstraction has 418 states and 538 transitions. [2024-11-28 02:45:22,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:45:22,079 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 538 transitions. [2024-11-28 02:45:22,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-28 02:45:22,081 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:45:22,082 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:22,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:45:22,083 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:45:22,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:22,083 INFO L85 PathProgramCache]: Analyzing trace with hash 340069444, now seen corresponding path program 1 times [2024-11-28 02:45:22,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:22,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783216208] [2024-11-28 02:45:22,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:22,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:45:22,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:22,960 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 02:45:22,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:22,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783216208] [2024-11-28 02:45:22,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783216208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:22,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:45:22,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:45:22,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897601582] [2024-11-28 02:45:22,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:22,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:45:22,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:22,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:45:22,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:45:22,963 INFO L87 Difference]: Start difference. First operand 418 states and 538 transitions. Second operand has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:45:23,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:45:23,784 INFO L93 Difference]: Finished difference Result 802 states and 1045 transitions. [2024-11-28 02:45:23,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:45:23,785 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 171 [2024-11-28 02:45:23,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:45:23,787 INFO L225 Difference]: With dead ends: 802 [2024-11-28 02:45:23,787 INFO L226 Difference]: Without dead ends: 440 [2024-11-28 02:45:23,788 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 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 02:45:23,790 INFO L435 NwaCegarLoop]: 345 mSDtfsCounter, 28 mSDsluCounter, 1990 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 2335 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:45:23,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 2335 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:45:23,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2024-11-28 02:45:23,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 434. [2024-11-28 02:45:23,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 429 states have (on average 1.2867132867132867) internal successors, (552), 429 states have internal predecessors, (552), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:45:23,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 558 transitions. [2024-11-28 02:45:23,816 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 558 transitions. Word has length 171 [2024-11-28 02:45:23,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:45:23,816 INFO L471 AbstractCegarLoop]: Abstraction has 434 states and 558 transitions. [2024-11-28 02:45:23,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:45:23,818 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 558 transitions. [2024-11-28 02:45:23,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-28 02:45:23,821 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:45:23,821 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:23,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:45:23,821 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:45:23,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:23,822 INFO L85 PathProgramCache]: Analyzing trace with hash 656447816, now seen corresponding path program 1 times [2024-11-28 02:45:23,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:23,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140414175] [2024-11-28 02:45:23,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:23,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:45:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:24,350 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:45:24,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:24,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140414175] [2024-11-28 02:45:24,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140414175] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:45:24,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905997568] [2024-11-28 02:45:24,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:24,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:45:24,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:45:24,354 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:45:24,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:45:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:24,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:45:24,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:45:25,019 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 02:45:25,020 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:45:25,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905997568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:25,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:45:25,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2024-11-28 02:45:25,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377882119] [2024-11-28 02:45:25,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:25,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:45:25,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:25,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:45:25,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:45:25,024 INFO L87 Difference]: Start difference. First operand 434 states and 558 transitions. Second operand has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:45:25,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:45:25,385 INFO L93 Difference]: Finished difference Result 551 states and 714 transitions. [2024-11-28 02:45:25,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:45:25,386 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 172 [2024-11-28 02:45:25,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:45:25,388 INFO L225 Difference]: With dead ends: 551 [2024-11-28 02:45:25,388 INFO L226 Difference]: Without dead ends: 434 [2024-11-28 02:45:25,389 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:45:25,390 INFO L435 NwaCegarLoop]: 337 mSDtfsCounter, 30 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:45:25,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1431 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:45:25,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2024-11-28 02:45:25,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2024-11-28 02:45:25,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 429 states have (on average 1.2843822843822843) internal successors, (551), 429 states have internal predecessors, (551), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:45:25,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 557 transitions. [2024-11-28 02:45:25,414 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 557 transitions. Word has length 172 [2024-11-28 02:45:25,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:45:25,415 INFO L471 AbstractCegarLoop]: Abstraction has 434 states and 557 transitions. [2024-11-28 02:45:25,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:45:25,416 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 557 transitions. [2024-11-28 02:45:25,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-28 02:45:25,418 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:45:25,418 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:25,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 02:45:25,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 02:45:25,620 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:45:25,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:25,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1150582033, now seen corresponding path program 1 times [2024-11-28 02:45:25,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:25,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107709870] [2024-11-28 02:45:25,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:25,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:45:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:26,141 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 02:45:26,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:26,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107709870] [2024-11-28 02:45:26,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107709870] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:26,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:45:26,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:45:26,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187309921] [2024-11-28 02:45:26,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:26,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:45:26,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:26,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:45:26,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:45:26,144 INFO L87 Difference]: Start difference. First operand 434 states and 557 transitions. Second operand has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:45:26,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:45:26,551 INFO L93 Difference]: Finished difference Result 554 states and 717 transitions. [2024-11-28 02:45:26,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:45:26,552 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 173 [2024-11-28 02:45:26,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:45:26,554 INFO L225 Difference]: With dead ends: 554 [2024-11-28 02:45:26,555 INFO L226 Difference]: Without dead ends: 437 [2024-11-28 02:45:26,555 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 02:45:26,556 INFO L435 NwaCegarLoop]: 345 mSDtfsCounter, 8 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1429 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:45:26,556 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1429 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:45:26,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2024-11-28 02:45:26,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2024-11-28 02:45:26,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 432 states have (on average 1.2824074074074074) internal successors, (554), 432 states have internal predecessors, (554), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:45:26,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 560 transitions. [2024-11-28 02:45:26,579 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 560 transitions. Word has length 173 [2024-11-28 02:45:26,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:45:26,580 INFO L471 AbstractCegarLoop]: Abstraction has 437 states and 560 transitions. [2024-11-28 02:45:26,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:45:26,580 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 560 transitions. [2024-11-28 02:45:26,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-28 02:45:26,583 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:45:26,584 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:26,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 02:45:26,584 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:45:26,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:26,585 INFO L85 PathProgramCache]: Analyzing trace with hash 510988257, now seen corresponding path program 1 times [2024-11-28 02:45:26,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:26,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702847797] [2024-11-28 02:45:26,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:26,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:45:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:27,057 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 02:45:27,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:27,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702847797] [2024-11-28 02:45:27,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702847797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:27,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:45:27,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:45:27,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283477320] [2024-11-28 02:45:27,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:27,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:45:27,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:27,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:45:27,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:45:27,061 INFO L87 Difference]: Start difference. First operand 437 states and 560 transitions. Second operand has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:45:27,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:45:27,484 INFO L93 Difference]: Finished difference Result 562 states and 726 transitions. [2024-11-28 02:45:27,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:45:27,484 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 174 [2024-11-28 02:45:27,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:45:27,487 INFO L225 Difference]: With dead ends: 562 [2024-11-28 02:45:27,487 INFO L226 Difference]: Without dead ends: 442 [2024-11-28 02:45:27,488 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 02:45:27,488 INFO L435 NwaCegarLoop]: 335 mSDtfsCounter, 12 mSDsluCounter, 1355 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:45:27,488 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1690 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:45:27,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2024-11-28 02:45:27,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 441. [2024-11-28 02:45:27,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 436 states have (on average 1.2821100917431192) internal successors, (559), 436 states have internal predecessors, (559), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:45:27,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 565 transitions. [2024-11-28 02:45:27,510 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 565 transitions. Word has length 174 [2024-11-28 02:45:27,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:45:27,511 INFO L471 AbstractCegarLoop]: Abstraction has 441 states and 565 transitions. [2024-11-28 02:45:27,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:45:27,511 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 565 transitions. [2024-11-28 02:45:27,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-28 02:45:27,513 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:45:27,513 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:27,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 02:45:27,514 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:45:27,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:27,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1244159803, now seen corresponding path program 1 times [2024-11-28 02:45:27,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:27,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342815944] [2024-11-28 02:45:27,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:27,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:45:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:27,992 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:45:27,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:27,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342815944] [2024-11-28 02:45:27,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342815944] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:45:27,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448080055] [2024-11-28 02:45:27,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:27,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:45:27,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:45:27,995 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:45:28,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:45:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:28,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:45:28,627 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:45:28,661 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:45:28,661 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:45:28,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448080055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:28,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:45:28,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-11-28 02:45:28,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221758187] [2024-11-28 02:45:28,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:28,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:45:28,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:28,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:45:28,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:45:28,664 INFO L87 Difference]: Start difference. First operand 441 states and 565 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:45:28,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:45:28,718 INFO L93 Difference]: Finished difference Result 776 states and 996 transitions. [2024-11-28 02:45:28,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:45:28,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 174 [2024-11-28 02:45:28,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:45:28,723 INFO L225 Difference]: With dead ends: 776 [2024-11-28 02:45:28,723 INFO L226 Difference]: Without dead ends: 444 [2024-11-28 02:45:28,724 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:45:28,724 INFO L435 NwaCegarLoop]: 352 mSDtfsCounter, 0 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:45:28,725 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1052 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:45:28,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2024-11-28 02:45:28,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2024-11-28 02:45:28,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 438 states have (on average 1.2831050228310503) internal successors, (562), 439 states have internal predecessors, (562), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 02:45:28,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 569 transitions. [2024-11-28 02:45:28,748 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 569 transitions. Word has length 174 [2024-11-28 02:45:28,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:45:28,749 INFO L471 AbstractCegarLoop]: Abstraction has 444 states and 569 transitions. [2024-11-28 02:45:28,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:45:28,749 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 569 transitions. [2024-11-28 02:45:28,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-28 02:45:28,751 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:45:28,751 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:28,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:45:28,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 02:45:28,952 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:45:28,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:28,953 INFO L85 PathProgramCache]: Analyzing trace with hash -595882073, now seen corresponding path program 1 times [2024-11-28 02:45:28,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:28,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623811931] [2024-11-28 02:45:28,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:28,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:45:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:29,517 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:45:29,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:29,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623811931] [2024-11-28 02:45:29,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623811931] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:45:29,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403764149] [2024-11-28 02:45:29,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:29,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:45:29,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:45:29,520 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:45:29,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:45:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:30,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 02:45:30,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:45:30,196 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:45:30,197 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:45:30,332 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:45:30,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403764149] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:45:30,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:45:30,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-28 02:45:30,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116771926] [2024-11-28 02:45:30,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:45:30,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:45:30,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:30,334 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:45:30,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:45:30,334 INFO L87 Difference]: Start difference. First operand 444 states and 569 transitions. Second operand has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 2 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:45:30,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:45:30,555 INFO L93 Difference]: Finished difference Result 792 states and 1019 transitions. [2024-11-28 02:45:30,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:45:30,556 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 2 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 176 [2024-11-28 02:45:30,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:45:30,559 INFO L225 Difference]: With dead ends: 792 [2024-11-28 02:45:30,559 INFO L226 Difference]: Without dead ends: 455 [2024-11-28 02:45:30,560 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:45:30,560 INFO L435 NwaCegarLoop]: 352 mSDtfsCounter, 11 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2090 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:45:30,561 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2090 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:45:30,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2024-11-28 02:45:30,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 453. [2024-11-28 02:45:30,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 446 states have (on average 1.2869955156950672) internal successors, (574), 447 states have internal predecessors, (574), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 02:45:30,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 581 transitions. [2024-11-28 02:45:30,593 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 581 transitions. Word has length 176 [2024-11-28 02:45:30,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:45:30,595 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 581 transitions. [2024-11-28 02:45:30,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 2 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:45:30,595 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 581 transitions. [2024-11-28 02:45:30,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-28 02:45:30,598 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:45:30,598 INFO L218 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:30,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 02:45:30,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 02:45:30,799 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:45:30,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:30,801 INFO L85 PathProgramCache]: Analyzing trace with hash 2054178501, now seen corresponding path program 2 times [2024-11-28 02:45:30,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:30,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303312143] [2024-11-28 02:45:30,801 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:45:30,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:45:30,892 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:45:30,896 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:45:31,074 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-28 02:45:31,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:31,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303312143] [2024-11-28 02:45:31,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303312143] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:31,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:45:31,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:45:31,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040285283] [2024-11-28 02:45:31,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:31,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:45:31,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:31,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:45:31,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:45:31,077 INFO L87 Difference]: Start difference. First operand 453 states and 581 transitions. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:45:31,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:45:31,557 INFO L93 Difference]: Finished difference Result 619 states and 802 transitions. [2024-11-28 02:45:31,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:45:31,557 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 180 [2024-11-28 02:45:31,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:45:31,560 INFO L225 Difference]: With dead ends: 619 [2024-11-28 02:45:31,561 INFO L226 Difference]: Without dead ends: 495 [2024-11-28 02:45:31,562 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:45:31,563 INFO L435 NwaCegarLoop]: 358 mSDtfsCounter, 81 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:45:31,563 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1524 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:45:31,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2024-11-28 02:45:31,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 455. [2024-11-28 02:45:31,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 448 states have (on average 1.2857142857142858) internal successors, (576), 449 states have internal predecessors, (576), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 02:45:31,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 583 transitions. [2024-11-28 02:45:31,592 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 583 transitions. Word has length 180 [2024-11-28 02:45:31,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:45:31,593 INFO L471 AbstractCegarLoop]: Abstraction has 455 states and 583 transitions. [2024-11-28 02:45:31,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:45:31,593 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 583 transitions. [2024-11-28 02:45:31,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-28 02:45:31,596 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:45:31,596 INFO L218 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:31,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 02:45:31,596 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:45:31,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:31,598 INFO L85 PathProgramCache]: Analyzing trace with hash -841701821, now seen corresponding path program 1 times [2024-11-28 02:45:31,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:31,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543890556] [2024-11-28 02:45:31,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:31,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:45:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:32,175 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-28 02:45:32,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:32,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543890556] [2024-11-28 02:45:32,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543890556] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:32,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:45:32,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:45:32,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850920046] [2024-11-28 02:45:32,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:32,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:45:32,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:32,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:45:32,177 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:45:32,177 INFO L87 Difference]: Start difference. First operand 455 states and 583 transitions. Second operand has 9 states, 9 states have (on average 18.666666666666668) internal successors, (168), 9 states have internal predecessors, (168), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:45:32,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:45:32,605 INFO L93 Difference]: Finished difference Result 591 states and 762 transitions. [2024-11-28 02:45:32,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:45:32,605 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.666666666666668) internal successors, (168), 9 states have internal predecessors, (168), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 181 [2024-11-28 02:45:32,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:45:32,608 INFO L225 Difference]: With dead ends: 591 [2024-11-28 02:45:32,608 INFO L226 Difference]: Without dead ends: 465 [2024-11-28 02:45:32,609 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:45:32,610 INFO L435 NwaCegarLoop]: 335 mSDtfsCounter, 20 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:45:32,610 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1793 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:45:32,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2024-11-28 02:45:32,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 462. [2024-11-28 02:45:32,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 455 states have (on average 1.2857142857142858) internal successors, (585), 456 states have internal predecessors, (585), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 02:45:32,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 592 transitions. [2024-11-28 02:45:32,633 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 592 transitions. Word has length 181 [2024-11-28 02:45:32,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:45:32,633 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 592 transitions. [2024-11-28 02:45:32,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.666666666666668) internal successors, (168), 9 states have internal predecessors, (168), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:45:32,634 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 592 transitions. [2024-11-28 02:45:32,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-28 02:45:32,636 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:45:32,637 INFO L218 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:32,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 02:45:32,637 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:45:32,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:32,638 INFO L85 PathProgramCache]: Analyzing trace with hash 583283167, now seen corresponding path program 1 times [2024-11-28 02:45:32,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:32,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931352826] [2024-11-28 02:45:32,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:32,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:45:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:33,207 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 02:45:33,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:33,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931352826] [2024-11-28 02:45:33,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931352826] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:45:33,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109748118] [2024-11-28 02:45:33,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:33,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:45:33,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:45:33,212 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:45:33,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:45:33,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:33,914 INFO L256 TraceCheckSpWp]: Trace formula consists of 850 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 02:45:33,920 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:45:34,056 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-28 02:45:34,057 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:45:34,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109748118] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:34,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:45:34,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-11-28 02:45:34,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890330513] [2024-11-28 02:45:34,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:34,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:45:34,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:34,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:45:34,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:45:34,060 INFO L87 Difference]: Start difference. First operand 462 states and 592 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:45:34,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:45:34,482 INFO L93 Difference]: Finished difference Result 600 states and 774 transitions. [2024-11-28 02:45:34,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:45:34,482 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 181 [2024-11-28 02:45:34,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:45:34,485 INFO L225 Difference]: With dead ends: 600 [2024-11-28 02:45:34,485 INFO L226 Difference]: Without dead ends: 467 [2024-11-28 02:45:34,486 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:45:34,489 INFO L435 NwaCegarLoop]: 332 mSDtfsCounter, 17 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:45:34,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1704 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:45:34,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2024-11-28 02:45:34,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 464. [2024-11-28 02:45:34,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 457 states have (on average 1.2844638949671772) internal successors, (587), 458 states have internal predecessors, (587), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 02:45:34,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 594 transitions. [2024-11-28 02:45:34,513 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 594 transitions. Word has length 181 [2024-11-28 02:45:34,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:45:34,514 INFO L471 AbstractCegarLoop]: Abstraction has 464 states and 594 transitions. [2024-11-28 02:45:34,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:45:34,514 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 594 transitions. [2024-11-28 02:45:34,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-28 02:45:34,517 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:45:34,517 INFO L218 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:34,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 02:45:34,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:45:34,718 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:45:34,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:34,719 INFO L85 PathProgramCache]: Analyzing trace with hash -756096459, now seen corresponding path program 1 times [2024-11-28 02:45:34,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:34,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760034100] [2024-11-28 02:45:34,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:34,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:45:34,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:35,505 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-28 02:45:35,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:35,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760034100] [2024-11-28 02:45:35,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760034100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:35,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:45:35,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 02:45:35,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119075788] [2024-11-28 02:45:35,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:35,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:45:35,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:35,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:45:35,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:45:35,508 INFO L87 Difference]: Start difference. First operand 464 states and 594 transitions. Second operand has 10 states, 10 states have (on average 16.9) internal successors, (169), 10 states have internal predecessors, (169), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:45:36,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:45:36,206 INFO L93 Difference]: Finished difference Result 608 states and 784 transitions. [2024-11-28 02:45:36,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:45:36,207 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.9) internal successors, (169), 10 states have internal predecessors, (169), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 182 [2024-11-28 02:45:36,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:45:36,210 INFO L225 Difference]: With dead ends: 608 [2024-11-28 02:45:36,210 INFO L226 Difference]: Without dead ends: 473 [2024-11-28 02:45:36,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:45:36,212 INFO L435 NwaCegarLoop]: 342 mSDtfsCounter, 23 mSDsluCounter, 2231 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2573 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:45:36,212 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2573 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:45:36,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2024-11-28 02:45:36,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 467. [2024-11-28 02:45:36,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 460 states have (on average 1.2826086956521738) internal successors, (590), 461 states have internal predecessors, (590), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 02:45:36,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 597 transitions. [2024-11-28 02:45:36,265 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 597 transitions. Word has length 182 [2024-11-28 02:45:36,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:45:36,266 INFO L471 AbstractCegarLoop]: Abstraction has 467 states and 597 transitions. [2024-11-28 02:45:36,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.9) internal successors, (169), 10 states have internal predecessors, (169), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:45:36,266 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 597 transitions. [2024-11-28 02:45:36,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-28 02:45:36,269 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:45:36,269 INFO L218 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:36,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 02:45:36,269 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:45:36,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:36,270 INFO L85 PathProgramCache]: Analyzing trace with hash 468765209, now seen corresponding path program 1 times [2024-11-28 02:45:36,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:36,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040462851] [2024-11-28 02:45:36,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:36,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:45:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:36,892 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 02:45:36,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:36,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040462851] [2024-11-28 02:45:36,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040462851] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:45:36,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487504995] [2024-11-28 02:45:36,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:36,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:45:36,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:45:36,896 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:45:36,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:45:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:37,652 INFO L256 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 02:45:37,657 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:45:37,774 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:45:37,774 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:45:42,127 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 9 refuted. 1 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:45:42,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487504995] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:45:42,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:45:42,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 8] total 18 [2024-11-28 02:45:42,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366708005] [2024-11-28 02:45:42,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:45:42,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 02:45:42,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:42,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 02:45:42,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=218, Unknown=1, NotChecked=0, Total=306 [2024-11-28 02:45:42,130 INFO L87 Difference]: Start difference. First operand 467 states and 597 transitions. Second operand has 18 states, 18 states have (on average 10.666666666666666) internal successors, (192), 18 states have internal predecessors, (192), 2 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:45:43,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:45:43,162 INFO L93 Difference]: Finished difference Result 838 states and 1077 transitions. [2024-11-28 02:45:43,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 02:45:43,163 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.666666666666666) internal successors, (192), 18 states have internal predecessors, (192), 2 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 182 [2024-11-28 02:45:43,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:45:43,166 INFO L225 Difference]: With dead ends: 838 [2024-11-28 02:45:43,166 INFO L226 Difference]: Without dead ends: 480 [2024-11-28 02:45:43,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=237, Invalid=518, Unknown=1, NotChecked=0, Total=756 [2024-11-28 02:45:43,169 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 28 mSDsluCounter, 3035 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3376 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:45:43,169 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3376 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:45:43,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2024-11-28 02:45:43,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 476. [2024-11-28 02:45:43,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 469 states have (on average 1.2899786780383795) internal successors, (605), 470 states have internal predecessors, (605), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 02:45:43,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 612 transitions. [2024-11-28 02:45:43,193 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 612 transitions. Word has length 182 [2024-11-28 02:45:43,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:45:43,194 INFO L471 AbstractCegarLoop]: Abstraction has 476 states and 612 transitions. [2024-11-28 02:45:43,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.666666666666666) internal successors, (192), 18 states have internal predecessors, (192), 2 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:45:43,194 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 612 transitions. [2024-11-28 02:45:43,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-28 02:45:43,196 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:45:43,196 INFO L218 NwaCegarLoop]: trace histogram [13, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:43,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 02:45:43,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:45:43,402 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:45:43,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:43,402 INFO L85 PathProgramCache]: Analyzing trace with hash 932424701, now seen corresponding path program 2 times [2024-11-28 02:45:43,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:43,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202957698] [2024-11-28 02:45:43,403 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:45:43,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:45:43,500 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:45:43,501 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:45:43,899 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-28 02:45:43,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:43,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202957698] [2024-11-28 02:45:43,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202957698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:43,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:45:43,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 02:45:43,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518520969] [2024-11-28 02:45:43,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:43,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:45:43,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:43,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:45:43,901 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:45:43,901 INFO L87 Difference]: Start difference. First operand 476 states and 612 transitions. Second operand has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:45:46,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 02:45:50,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 02:45:51,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:45:51,261 INFO L93 Difference]: Finished difference Result 630 states and 814 transitions. [2024-11-28 02:45:51,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:45:51,262 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 189 [2024-11-28 02:45:51,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:45:51,265 INFO L225 Difference]: With dead ends: 630 [2024-11-28 02:45:51,265 INFO L226 Difference]: Without dead ends: 492 [2024-11-28 02:45:51,266 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:45:51,267 INFO L435 NwaCegarLoop]: 345 mSDtfsCounter, 24 mSDsluCounter, 1719 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 2064 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:45:51,268 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 2064 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 464 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2024-11-28 02:45:51,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2024-11-28 02:45:51,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 482. [2024-11-28 02:45:51,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 475 states have (on average 1.288421052631579) internal successors, (612), 476 states have internal predecessors, (612), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 02:45:51,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 619 transitions. [2024-11-28 02:45:51,298 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 619 transitions. Word has length 189 [2024-11-28 02:45:51,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:45:51,298 INFO L471 AbstractCegarLoop]: Abstraction has 482 states and 619 transitions. [2024-11-28 02:45:51,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:45:51,299 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 619 transitions. [2024-11-28 02:45:51,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-28 02:45:51,301 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:45:51,301 INFO L218 NwaCegarLoop]: trace histogram [13, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:51,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-28 02:45:51,302 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:45:51,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:51,303 INFO L85 PathProgramCache]: Analyzing trace with hash -439573052, now seen corresponding path program 1 times [2024-11-28 02:45:51,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:51,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756726563] [2024-11-28 02:45:51,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:51,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:45:51,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:52,184 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 2 proven. 52 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-28 02:45:52,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:52,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756726563] [2024-11-28 02:45:52,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756726563] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:45:52,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846651884] [2024-11-28 02:45:52,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:52,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:45:52,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:45:52,187 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:45:52,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf795254-1689-4ae9-b81c-b416c67913a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:45:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:53,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 956 conjuncts, 189 conjuncts are in the unsatisfiable core [2024-11-28 02:45:53,285 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:45:53,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 02:45:53,969 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 15 treesize of output 1 [2024-11-28 02:45:53,980 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 11 treesize of output 7 [2024-11-28 02:45:54,026 INFO L349 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2024-11-28 02:45:54,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2024-11-28 02:45:54,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2024-11-28 02:45:54,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 02:45:54,621 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 02:45:54,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-28 02:45:54,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-28 02:46:09,685 INFO L224 Elim1Store]: Index analysis took 1404 ms