./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_c_str_harness-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_388f3bcd-1381-4c91-832c-77129f12512d/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_388f3bcd-1381-4c91-832c-77129f12512d/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_388f3bcd-1381-4c91-832c-77129f12512d/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_388f3bcd-1381-4c91-832c-77129f12512d/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_c_str_harness-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_388f3bcd-1381-4c91-832c-77129f12512d/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_388f3bcd-1381-4c91-832c-77129f12512d/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 05e02581adbae65f3c76984e6696604355ca8e8f10cecf21271078f0821410f3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 09:01:14,486 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 09:01:14,542 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_388f3bcd-1381-4c91-832c-77129f12512d/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-12-02 09:01:14,547 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 09:01:14,547 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 09:01:14,570 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 09:01:14,570 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 09:01:14,570 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 09:01:14,571 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 09:01:14,571 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 09:01:14,571 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 09:01:14,571 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 09:01:14,571 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 09:01:14,571 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 09:01:14,572 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 09:01:14,572 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 09:01:14,572 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 09:01:14,572 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 09:01:14,572 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 09:01:14,572 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 09:01:14,572 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 09:01:14,572 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 09:01:14,572 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 09:01:14,572 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 09:01:14,573 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 09:01:14,573 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 09:01:14,573 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 09:01:14,573 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 09:01:14,573 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 09:01:14,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 09:01:14,573 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 09:01:14,573 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 09:01:14,573 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 09:01:14,573 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 09:01:14,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 09:01:14,574 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 09:01:14,574 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 09:01:14,574 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 09:01:14,574 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 09:01:14,574 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 09:01:14,574 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 09:01:14,574 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 09:01:14,574 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 09:01:14,574 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 09:01:14,574 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 09:01:14,574 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_388f3bcd-1381-4c91-832c-77129f12512d/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05e02581adbae65f3c76984e6696604355ca8e8f10cecf21271078f0821410f3 [2024-12-02 09:01:14,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 09:01:14,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 09:01:14,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 09:01:14,825 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 09:01:14,826 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 09:01:14,827 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_388f3bcd-1381-4c91-832c-77129f12512d/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_c_str_harness-1.i [2024-12-02 09:01:17,465 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_388f3bcd-1381-4c91-832c-77129f12512d/bin/uautomizer-verify-84ZbGMXZE1/data/98c862ef7/8c1e0fbe591d446ab88c3ba61e80b42b/FLAGb0f9d36e7 [2024-12-02 09:01:17,875 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 09:01:17,875 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_388f3bcd-1381-4c91-832c-77129f12512d/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_c_str_harness-1.i [2024-12-02 09:01:17,902 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_388f3bcd-1381-4c91-832c-77129f12512d/bin/uautomizer-verify-84ZbGMXZE1/data/98c862ef7/8c1e0fbe591d446ab88c3ba61e80b42b/FLAGb0f9d36e7 [2024-12-02 09:01:17,914 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_388f3bcd-1381-4c91-832c-77129f12512d/bin/uautomizer-verify-84ZbGMXZE1/data/98c862ef7/8c1e0fbe591d446ab88c3ba61e80b42b [2024-12-02 09:01:17,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 09:01:17,918 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 09:01:17,919 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 09:01:17,919 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 09:01:17,923 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 09:01:17,924 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:01:17" (1/1) ... [2024-12-02 09:01:17,925 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63084cd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:01:17, skipping insertion in model container [2024-12-02 09:01:17,925 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:01:17" (1/1) ... [2024-12-02 09:01:17,992 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 09:01:18,219 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_388f3bcd-1381-4c91-832c-77129f12512d/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_c_str_harness-1.i[4497,4510] [2024-12-02 09:01:18,225 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_388f3bcd-1381-4c91-832c-77129f12512d/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_c_str_harness-1.i[4557,4570] [2024-12-02 09:01:18,959 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 09:01:18,959 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 09:01:18,960 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 09:01:18,961 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 09:01:18,961 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 09:01:18,976 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 09:01:18,977 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 09:01:18,979 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 09:01:18,979 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 09:01:19,590 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 09:01:19,590 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 09:01:19,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 09:01:19,717 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 09:01:19,729 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_388f3bcd-1381-4c91-832c-77129f12512d/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_c_str_harness-1.i[4497,4510] [2024-12-02 09:01:19,729 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_388f3bcd-1381-4c91-832c-77129f12512d/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_c_str_harness-1.i[4557,4570] [2024-12-02 09:01:19,770 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 09:01:19,770 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 09:01:19,771 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 09:01:19,771 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 09:01:19,771 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 09:01:19,777 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 09:01:19,777 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 09:01:19,778 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 09:01:19,778 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 09:01:19,877 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8269] [2024-12-02 09:01:19,878 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 09:01:19,879 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 09:01:19,892 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8755-8766] [2024-12-02 09:01:19,904 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 09:01:20,127 INFO L204 MainTranslator]: Completed translation [2024-12-02 09:01:20,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:01:20 WrapperNode [2024-12-02 09:01:20,128 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 09:01:20,129 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 09:01:20,129 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 09:01:20,129 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 09:01:20,134 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:01:20" (1/1) ... [2024-12-02 09:01:20,189 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:01:20" (1/1) ... [2024-12-02 09:01:20,237 INFO L138 Inliner]: procedures = 679, calls = 2616, calls flagged for inlining = 59, calls inlined = 6, statements flattened = 831 [2024-12-02 09:01:20,238 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 09:01:20,238 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 09:01:20,238 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 09:01:20,238 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 09:01:20,249 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:01:20" (1/1) ... [2024-12-02 09:01:20,249 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:01:20" (1/1) ... [2024-12-02 09:01:20,255 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:01:20" (1/1) ... [2024-12-02 09:01:20,302 INFO L175 MemorySlicer]: Split 535 memory accesses to 5 slices as follows [2, 257, 241, 30, 5]. 48 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 0, 6, 4, 5]. The 493 writes are split as follows [0, 257, 232, 4, 0]. [2024-12-02 09:01:20,303 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:01:20" (1/1) ... [2024-12-02 09:01:20,303 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:01:20" (1/1) ... [2024-12-02 09:01:20,330 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:01:20" (1/1) ... [2024-12-02 09:01:20,332 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:01:20" (1/1) ... [2024-12-02 09:01:20,335 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:01:20" (1/1) ... [2024-12-02 09:01:20,342 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:01:20" (1/1) ... [2024-12-02 09:01:20,345 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:01:20" (1/1) ... [2024-12-02 09:01:20,354 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 09:01:20,355 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 09:01:20,355 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 09:01:20,355 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 09:01:20,356 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:01:20" (1/1) ... [2024-12-02 09:01:20,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 09:01:20,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_388f3bcd-1381-4c91-832c-77129f12512d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:01:20,380 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_388f3bcd-1381-4c91-832c-77129f12512d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 09:01:20,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_388f3bcd-1381-4c91-832c-77129f12512d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 09:01:20,401 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-12-02 09:01:20,401 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-12-02 09:01:20,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 09:01:20,401 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-12-02 09:01:20,401 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-12-02 09:01:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-12-02 09:01:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-12-02 09:01:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-12-02 09:01:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-12-02 09:01:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-12-02 09:01:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 09:01:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 09:01:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 09:01:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 09:01:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 09:01:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-12-02 09:01:20,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-12-02 09:01:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 09:01:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 09:01:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 09:01:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 09:01:20,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 09:01:20,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-12-02 09:01:20,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-12-02 09:01:20,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 09:01:20,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 09:01:20,403 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-12-02 09:01:20,403 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-12-02 09:01:20,403 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2024-12-02 09:01:20,403 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2024-12-02 09:01:20,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-12-02 09:01:20,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-12-02 09:01:20,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-12-02 09:01:20,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-12-02 09:01:20,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-12-02 09:01:20,403 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 09:01:20,403 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 09:01:20,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 09:01:20,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 09:01:20,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 09:01:20,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 09:01:20,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-12-02 09:01:20,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-12-02 09:01:20,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-12-02 09:01:20,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-12-02 09:01:20,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-12-02 09:01:20,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-12-02 09:01:20,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-12-02 09:01:20,404 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-12-02 09:01:20,404 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-12-02 09:01:20,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 09:01:20,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 09:01:20,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 09:01:20,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 09:01:20,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 09:01:20,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 09:01:20,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 09:01:20,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 09:01:20,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 09:01:20,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 09:01:20,626 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 09:01:20,628 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 09:01:28,278 INFO L? ?]: Removed 76 outVars from TransFormulas that were not future-live. [2024-12-02 09:01:28,278 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 09:01:28,287 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 09:01:28,288 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 09:01:28,288 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:01:28 BoogieIcfgContainer [2024-12-02 09:01:28,288 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 09:01:28,290 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 09:01:28,290 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 09:01:28,293 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 09:01:28,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 09:01:17" (1/3) ... [2024-12-02 09:01:28,294 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1734aac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:01:28, skipping insertion in model container [2024-12-02 09:01:28,294 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:01:20" (2/3) ... [2024-12-02 09:01:28,294 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1734aac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:01:28, skipping insertion in model container [2024-12-02 09:01:28,294 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:01:28" (3/3) ... [2024-12-02 09:01:28,295 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_from_c_str_harness-1.i [2024-12-02 09:01:28,305 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 09:01:28,307 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_buf_from_c_str_harness-1.i that has 8 procedures, 92 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-12-02 09:01:28,347 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 09:01:28,356 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;@368bce97, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 09:01:28,357 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 09:01:28,360 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 62 states have (on average 1.2258064516129032) internal successors, (76), 63 states have internal predecessors, (76), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-12-02 09:01:28,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-12-02 09:01:28,364 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:01:28,365 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] [2024-12-02 09:01:28,365 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:01:28,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:01:28,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1814788681, now seen corresponding path program 1 times [2024-12-02 09:01:28,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:01:28,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85665012] [2024-12-02 09:01:28,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:01:28,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:02:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:02:56,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:02:56,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:02:56,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85665012] [2024-12-02 09:02:56,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85665012] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:02:56,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:02:56,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 09:02:56,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175542293] [2024-12-02 09:02:56,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:02:56,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 09:02:56,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:02:56,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 09:02:56,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 09:02:56,373 INFO L87 Difference]: Start difference. First operand has 92 states, 62 states have (on average 1.2258064516129032) internal successors, (76), 63 states have internal predecessors, (76), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 09:02:56,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:02:56,625 INFO L93 Difference]: Finished difference Result 177 states and 242 transitions. [2024-12-02 09:02:56,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 09:02:56,628 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2024-12-02 09:02:56,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:02:56,635 INFO L225 Difference]: With dead ends: 177 [2024-12-02 09:02:56,635 INFO L226 Difference]: Without dead ends: 87 [2024-12-02 09:02:56,639 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 09:02:56,642 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 0 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 09:02:56,642 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 431 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 09:02:56,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-12-02 09:02:56,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-12-02 09:02:56,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 57 states have (on average 1.1929824561403508) internal successors, (68), 60 states have internal predecessors, (68), 21 states have call successors, (21), 7 states have call predecessors, (21), 8 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2024-12-02 09:02:56,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 109 transitions. [2024-12-02 09:02:56,681 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 109 transitions. Word has length 23 [2024-12-02 09:02:56,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:02:56,682 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 109 transitions. [2024-12-02 09:02:56,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 09:02:56,682 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 109 transitions. [2024-12-02 09:02:56,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-12-02 09:02:56,684 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:02:56,684 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] [2024-12-02 09:02:56,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 09:02:56,684 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:02:56,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:02:56,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1149269628, now seen corresponding path program 1 times [2024-12-02 09:02:56,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:02:56,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146367178] [2024-12-02 09:02:56,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:02:56,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:04:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:04:22,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:04:22,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:04:22,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146367178] [2024-12-02 09:04:22,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146367178] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:04:22,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:04:22,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 09:04:22,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206969220] [2024-12-02 09:04:22,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:04:22,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 09:04:22,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:04:22,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 09:04:22,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 09:04:22,380 INFO L87 Difference]: Start difference. First operand 87 states and 109 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 09:04:22,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:04:22,483 INFO L93 Difference]: Finished difference Result 150 states and 191 transitions. [2024-12-02 09:04:22,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 09:04:22,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-12-02 09:04:22,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:04:22,486 INFO L225 Difference]: With dead ends: 150 [2024-12-02 09:04:22,486 INFO L226 Difference]: Without dead ends: 90 [2024-12-02 09:04:22,486 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 09:04:22,487 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 1 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 09:04:22,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 303 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 09:04:22,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-12-02 09:04:22,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2024-12-02 09:04:22,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 62 states have internal predecessors, (70), 21 states have call successors, (21), 7 states have call predecessors, (21), 8 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2024-12-02 09:04:22,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 111 transitions. [2024-12-02 09:04:22,494 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 111 transitions. Word has length 29 [2024-12-02 09:04:22,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:04:22,495 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 111 transitions. [2024-12-02 09:04:22,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 09:04:22,495 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 111 transitions. [2024-12-02 09:04:22,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-12-02 09:04:22,495 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:04:22,495 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] [2024-12-02 09:04:22,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 09:04:22,496 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:04:22,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:04:22,496 INFO L85 PathProgramCache]: Analyzing trace with hash -448205050, now seen corresponding path program 1 times [2024-12-02 09:04:22,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:04:22,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603589501] [2024-12-02 09:04:22,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:04:22,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:05:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:05:49,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:05:49,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:05:49,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603589501] [2024-12-02 09:05:49,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603589501] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:05:49,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:05:49,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 09:05:49,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399510799] [2024-12-02 09:05:49,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:05:49,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 09:05:49,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:05:49,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 09:05:49,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 09:05:49,555 INFO L87 Difference]: Start difference. First operand 89 states and 111 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 09:05:49,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:05:49,672 INFO L93 Difference]: Finished difference Result 153 states and 194 transitions. [2024-12-02 09:05:49,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 09:05:49,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-12-02 09:05:49,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:05:49,674 INFO L225 Difference]: With dead ends: 153 [2024-12-02 09:05:49,674 INFO L226 Difference]: Without dead ends: 91 [2024-12-02 09:05:49,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 09:05:49,675 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 0 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 09:05:49,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 304 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 09:05:49,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-12-02 09:05:49,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-12-02 09:05:49,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 61 states have (on average 1.180327868852459) internal successors, (72), 64 states have internal predecessors, (72), 21 states have call successors, (21), 7 states have call predecessors, (21), 8 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2024-12-02 09:05:49,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 113 transitions. [2024-12-02 09:05:49,687 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 113 transitions. Word has length 29 [2024-12-02 09:05:49,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:05:49,687 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 113 transitions. [2024-12-02 09:05:49,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 09:05:49,687 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 113 transitions. [2024-12-02 09:05:49,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-12-02 09:05:49,688 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:05:49,688 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] [2024-12-02 09:05:49,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 09:05:49,688 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:05:49,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:05:49,689 INFO L85 PathProgramCache]: Analyzing trace with hash -562463614, now seen corresponding path program 1 times [2024-12-02 09:05:49,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:05:49,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928020502] [2024-12-02 09:05:49,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:05:49,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:07:15,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:07:19,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:07:19,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:07:19,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928020502] [2024-12-02 09:07:19,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928020502] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:07:19,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:07:19,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 09:07:19,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876135323] [2024-12-02 09:07:19,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:07:19,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 09:07:19,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:07:19,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 09:07:19,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 09:07:19,665 INFO L87 Difference]: Start difference. First operand 91 states and 113 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 09:07:20,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:07:20,137 INFO L93 Difference]: Finished difference Result 103 states and 126 transitions. [2024-12-02 09:07:20,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 09:07:20,138 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-12-02 09:07:20,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:07:20,140 INFO L225 Difference]: With dead ends: 103 [2024-12-02 09:07:20,140 INFO L226 Difference]: Without dead ends: 101 [2024-12-02 09:07:20,140 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-02 09:07:20,141 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 3 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 09:07:20,141 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 705 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 09:07:20,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-12-02 09:07:20,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2024-12-02 09:07:20,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 67 states have (on average 1.164179104477612) internal successors, (78), 71 states have internal predecessors, (78), 22 states have call successors, (22), 8 states have call predecessors, (22), 10 states have return successors, (23), 20 states have call predecessors, (23), 20 states have call successors, (23) [2024-12-02 09:07:20,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 123 transitions. [2024-12-02 09:07:20,153 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 123 transitions. Word has length 29 [2024-12-02 09:07:20,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:07:20,153 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 123 transitions. [2024-12-02 09:07:20,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 09:07:20,154 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 123 transitions. [2024-12-02 09:07:20,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-12-02 09:07:20,155 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:07:20,155 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] [2024-12-02 09:07:20,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 09:07:20,155 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:07:20,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:07:20,155 INFO L85 PathProgramCache]: Analyzing trace with hash -129003826, now seen corresponding path program 1 times [2024-12-02 09:07:20,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:07:20,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529265317] [2024-12-02 09:07:20,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:07:20,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:08:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:08:54,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:08:54,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:08:54,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529265317] [2024-12-02 09:08:54,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529265317] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:08:54,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:08:54,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 09:08:54,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557388022] [2024-12-02 09:08:54,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:08:54,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 09:08:54,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:08:54,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 09:08:54,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 09:08:54,518 INFO L87 Difference]: Start difference. First operand 100 states and 123 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 09:08:55,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:08:55,885 INFO L93 Difference]: Finished difference Result 188 states and 237 transitions. [2024-12-02 09:08:55,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 09:08:55,885 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2024-12-02 09:08:55,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:08:55,886 INFO L225 Difference]: With dead ends: 188 [2024-12-02 09:08:55,887 INFO L226 Difference]: Without dead ends: 120 [2024-12-02 09:08:55,887 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-12-02 09:08:55,887 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 19 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 09:08:55,888 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 588 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 09:08:55,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-12-02 09:08:55,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 111. [2024-12-02 09:08:55,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 75 states have (on average 1.16) internal successors, (87), 81 states have internal predecessors, (87), 24 states have call successors, (24), 8 states have call predecessors, (24), 11 states have return successors, (28), 21 states have call predecessors, (28), 22 states have call successors, (28) [2024-12-02 09:08:55,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 139 transitions. [2024-12-02 09:08:55,904 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 139 transitions. Word has length 33 [2024-12-02 09:08:55,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:08:55,904 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 139 transitions. [2024-12-02 09:08:55,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 09:08:55,904 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 139 transitions. [2024-12-02 09:08:55,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-12-02 09:08:55,905 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:08:55,905 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] [2024-12-02 09:08:55,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 09:08:55,905 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:08:55,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:08:55,906 INFO L85 PathProgramCache]: Analyzing trace with hash 129161612, now seen corresponding path program 1 times [2024-12-02 09:08:55,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:08:55,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626405484] [2024-12-02 09:08:55,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:08:55,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:10:22,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:10:25,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:10:25,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:10:25,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626405484] [2024-12-02 09:10:25,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626405484] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:10:25,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:10:25,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 09:10:25,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435728406] [2024-12-02 09:10:25,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:10:25,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 09:10:25,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:10:25,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 09:10:25,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 09:10:25,401 INFO L87 Difference]: Start difference. First operand 111 states and 139 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 09:10:25,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:10:25,904 INFO L93 Difference]: Finished difference Result 203 states and 257 transitions. [2024-12-02 09:10:25,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 09:10:25,905 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2024-12-02 09:10:25,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:10:25,907 INFO L225 Difference]: With dead ends: 203 [2024-12-02 09:10:25,907 INFO L226 Difference]: Without dead ends: 128 [2024-12-02 09:10:25,908 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-12-02 09:10:25,908 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 11 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 09:10:25,909 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 380 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 09:10:25,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-12-02 09:10:25,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 114. [2024-12-02 09:10:25,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 78 states have (on average 1.1538461538461537) internal successors, (90), 84 states have internal predecessors, (90), 24 states have call successors, (24), 8 states have call predecessors, (24), 11 states have return successors, (28), 21 states have call predecessors, (28), 22 states have call successors, (28) [2024-12-02 09:10:25,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 142 transitions. [2024-12-02 09:10:25,921 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 142 transitions. Word has length 33 [2024-12-02 09:10:25,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:10:25,921 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 142 transitions. [2024-12-02 09:10:25,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 09:10:25,921 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 142 transitions. [2024-12-02 09:10:25,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-12-02 09:10:25,922 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:10:25,923 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] [2024-12-02 09:10:25,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 09:10:25,923 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:10:25,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:10:25,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1297594104, now seen corresponding path program 1 times [2024-12-02 09:10:25,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:10:25,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829986822] [2024-12-02 09:10:25,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:10:25,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:11:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:11:57,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:11:57,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:11:57,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829986822] [2024-12-02 09:11:57,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829986822] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:11:57,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:11:57,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 09:11:57,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093093803] [2024-12-02 09:11:57,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:11:57,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 09:11:57,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:11:57,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 09:11:57,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 09:11:57,917 INFO L87 Difference]: Start difference. First operand 114 states and 142 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 09:12:00,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:12:00,289 INFO L93 Difference]: Finished difference Result 224 states and 282 transitions. [2024-12-02 09:12:00,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 09:12:00,290 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 33 [2024-12-02 09:12:00,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:12:00,292 INFO L225 Difference]: With dead ends: 224 [2024-12-02 09:12:00,292 INFO L226 Difference]: Without dead ends: 146 [2024-12-02 09:12:00,293 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-12-02 09:12:00,294 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 43 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 09:12:00,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 722 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 09:12:00,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-12-02 09:12:00,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 119. [2024-12-02 09:12:00,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 83 states have (on average 1.180722891566265) internal successors, (98), 89 states have internal predecessors, (98), 24 states have call successors, (24), 8 states have call predecessors, (24), 11 states have return successors, (28), 21 states have call predecessors, (28), 22 states have call successors, (28) [2024-12-02 09:12:00,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 150 transitions. [2024-12-02 09:12:00,314 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 150 transitions. Word has length 33 [2024-12-02 09:12:00,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:12:00,314 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 150 transitions. [2024-12-02 09:12:00,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 09:12:00,314 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 150 transitions. [2024-12-02 09:12:00,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-12-02 09:12:00,315 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:12:00,315 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] [2024-12-02 09:12:00,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 09:12:00,315 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:12:00,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:12:00,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1717509514, now seen corresponding path program 1 times [2024-12-02 09:12:00,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:12:00,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565640694] [2024-12-02 09:12:00,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:12:00,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:13:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:13:31,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:13:31,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:13:31,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565640694] [2024-12-02 09:13:31,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565640694] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:13:31,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:13:31,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 09:13:31,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539894947] [2024-12-02 09:13:31,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:13:31,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 09:13:31,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:13:31,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 09:13:31,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-12-02 09:13:31,264 INFO L87 Difference]: Start difference. First operand 119 states and 150 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 09:13:32,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:13:32,712 INFO L93 Difference]: Finished difference Result 237 states and 300 transitions. [2024-12-02 09:13:32,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 09:13:32,713 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2024-12-02 09:13:32,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:13:32,714 INFO L225 Difference]: With dead ends: 237 [2024-12-02 09:13:32,714 INFO L226 Difference]: Without dead ends: 154 [2024-12-02 09:13:32,714 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-12-02 09:13:32,715 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 34 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 09:13:32,715 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 645 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 09:13:32,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-12-02 09:13:32,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 116. [2024-12-02 09:13:32,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 80 states have (on average 1.1625) internal successors, (93), 86 states have internal predecessors, (93), 24 states have call successors, (24), 8 states have call predecessors, (24), 11 states have return successors, (28), 21 states have call predecessors, (28), 22 states have call successors, (28) [2024-12-02 09:13:32,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 145 transitions. [2024-12-02 09:13:32,725 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 145 transitions. Word has length 33 [2024-12-02 09:13:32,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:13:32,725 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 145 transitions. [2024-12-02 09:13:32,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 09:13:32,725 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 145 transitions. [2024-12-02 09:13:32,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-12-02 09:13:32,726 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:13:32,726 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] [2024-12-02 09:13:32,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 09:13:32,726 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:13:32,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:13:32,726 INFO L85 PathProgramCache]: Analyzing trace with hash 502268947, now seen corresponding path program 1 times [2024-12-02 09:13:32,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:13:32,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795801275] [2024-12-02 09:13:32,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:13:32,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:14:59,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:15:04,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:15:04,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:15:04,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795801275] [2024-12-02 09:15:04,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795801275] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:15:04,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:15:04,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 09:15:04,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719707405] [2024-12-02 09:15:04,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:15:04,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 09:15:04,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:15:04,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 09:15:04,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 09:15:04,064 INFO L87 Difference]: Start difference. First operand 116 states and 145 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 09:15:04,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:15:04,788 INFO L93 Difference]: Finished difference Result 136 states and 168 transitions. [2024-12-02 09:15:04,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 09:15:04,789 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2024-12-02 09:15:04,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:15:04,790 INFO L225 Difference]: With dead ends: 136 [2024-12-02 09:15:04,790 INFO L226 Difference]: Without dead ends: 134 [2024-12-02 09:15:04,791 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-12-02 09:15:04,791 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 3 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 09:15:04,792 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 895 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 09:15:04,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-12-02 09:15:04,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 124. [2024-12-02 09:15:04,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 87 states have (on average 1.1494252873563218) internal successors, (100), 94 states have internal predecessors, (100), 24 states have call successors, (24), 8 states have call predecessors, (24), 12 states have return successors, (30), 21 states have call predecessors, (30), 22 states have call successors, (30) [2024-12-02 09:15:04,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 154 transitions. [2024-12-02 09:15:04,804 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 154 transitions. Word has length 35 [2024-12-02 09:15:04,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:15:04,805 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 154 transitions. [2024-12-02 09:15:04,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 09:15:04,805 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 154 transitions. [2024-12-02 09:15:04,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-12-02 09:15:04,806 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:15:04,806 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] [2024-12-02 09:15:04,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 09:15:04,806 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:15:04,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:15:04,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1203333525, now seen corresponding path program 1 times [2024-12-02 09:15:04,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:15:04,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850192239] [2024-12-02 09:15:04,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:15:04,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms