./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.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_43e02296-fb18-4dcf-b269-86ca8c11c97d/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e02296-fb18-4dcf-b269-86ca8c11c97d/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_43e02296-fb18-4dcf-b269-86ca8c11c97d/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e02296-fb18-4dcf-b269-86ca8c11c97d/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e02296-fb18-4dcf-b269-86ca8c11c97d/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_43e02296-fb18-4dcf-b269-86ca8c11c97d/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 675ab2caa96cd9b2eb6b721efd0b1d83fbee049c822d5b953bd418a0212be644 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 12:33:55,236 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 12:33:55,293 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e02296-fb18-4dcf-b269-86ca8c11c97d/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-12-02 12:33:55,298 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 12:33:55,298 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 12:33:55,319 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 12:33:55,320 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 12:33:55,320 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 12:33:55,320 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 12:33:55,321 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 12:33:55,321 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 12:33:55,321 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 12:33:55,321 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 12:33:55,321 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 12:33:55,321 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 12:33:55,321 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 12:33:55,322 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 12:33:55,322 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 12:33:55,322 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 12:33:55,322 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 12:33:55,322 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 12:33:55,322 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 12:33:55,322 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 12:33:55,322 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 12:33:55,322 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 12:33:55,322 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 12:33:55,322 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:33:55,323 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:33:55,323 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:33:55,323 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:33:55,323 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 12:33:55,323 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:33:55,323 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:33:55,323 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:33:55,323 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:33:55,323 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 12:33:55,323 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 12:33:55,323 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 12:33:55,323 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 12:33:55,324 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 12:33:55,324 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 12:33:55,324 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 12:33:55,324 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 12:33:55,324 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 12:33:55,324 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 12:33:55,324 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_43e02296-fb18-4dcf-b269-86ca8c11c97d/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 -> 675ab2caa96cd9b2eb6b721efd0b1d83fbee049c822d5b953bd418a0212be644 [2024-12-02 12:33:55,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 12:33:55,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 12:33:55,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 12:33:55,568 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 12:33:55,568 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 12:33:55,569 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e02296-fb18-4dcf-b269-86ca8c11c97d/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2024-12-02 12:33:58,222 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e02296-fb18-4dcf-b269-86ca8c11c97d/bin/uautomizer-verify-84ZbGMXZE1/data/251933324/8c68b03a93a84e7188c7ab49bc18f055/FLAG46105ce72 [2024-12-02 12:33:58,604 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 12:33:58,605 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e02296-fb18-4dcf-b269-86ca8c11c97d/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2024-12-02 12:33:58,633 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e02296-fb18-4dcf-b269-86ca8c11c97d/bin/uautomizer-verify-84ZbGMXZE1/data/251933324/8c68b03a93a84e7188c7ab49bc18f055/FLAG46105ce72 [2024-12-02 12:33:58,648 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e02296-fb18-4dcf-b269-86ca8c11c97d/bin/uautomizer-verify-84ZbGMXZE1/data/251933324/8c68b03a93a84e7188c7ab49bc18f055 [2024-12-02 12:33:58,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 12:33:58,651 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 12:33:58,652 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 12:33:58,653 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 12:33:58,657 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 12:33:58,658 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:33:58" (1/1) ... [2024-12-02 12:33:58,659 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e244c6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:33:58, skipping insertion in model container [2024-12-02 12:33:58,659 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:33:58" (1/1) ... [2024-12-02 12:33:58,726 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 12:33:58,942 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_43e02296-fb18-4dcf-b269-86ca8c11c97d/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2024-12-02 12:33:58,948 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_43e02296-fb18-4dcf-b269-86ca8c11c97d/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2024-12-02 12:33:59,746 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:33:59,746 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:33:59,747 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:33:59,747 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:33:59,748 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:33:59,763 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:33:59,763 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:33:59,765 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:33:59,766 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:34:00,428 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:34:00,428 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:34:00,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:34:00,550 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 12:34:00,564 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_43e02296-fb18-4dcf-b269-86ca8c11c97d/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2024-12-02 12:34:00,565 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_43e02296-fb18-4dcf-b269-86ca8c11c97d/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2024-12-02 12:34:00,602 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:34:00,602 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:34:00,603 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:34:00,603 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:34:00,603 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:34:00,608 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:34:00,609 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:34:00,609 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:34:00,610 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:34:00,712 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8291] [2024-12-02 12:34:00,713 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:34:00,714 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:34:00,728 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8777-8788] [2024-12-02 12:34:00,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:34:00,966 INFO L204 MainTranslator]: Completed translation [2024-12-02 12:34:00,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:34:00 WrapperNode [2024-12-02 12:34:00,966 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 12:34:00,967 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 12:34:00,967 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 12:34:00,967 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 12:34:00,972 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:34:00" (1/1) ... [2024-12-02 12:34:01,025 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:34:00" (1/1) ... [2024-12-02 12:34:01,080 INFO L138 Inliner]: procedures = 680, calls = 2643, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 869 [2024-12-02 12:34:01,081 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 12:34:01,081 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 12:34:01,081 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 12:34:01,081 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 12:34:01,091 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:34:00" (1/1) ... [2024-12-02 12:34:01,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:34:00" (1/1) ... [2024-12-02 12:34:01,098 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:34:00" (1/1) ... [2024-12-02 12:34:01,160 INFO L175 MemorySlicer]: Split 574 memory accesses to 8 slices as follows [257, 2, 238, 4, 33, 22, 9, 9]. 45 percent of accesses are in the largest equivalence class. The 25 initializations are split as follows [0, 2, 6, 2, 4, 2, 4, 5]. The 494 writes are split as follows [257, 0, 232, 0, 3, 1, 0, 1]. [2024-12-02 12:34:01,160 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:34:00" (1/1) ... [2024-12-02 12:34:01,161 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:34:00" (1/1) ... [2024-12-02 12:34:01,189 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:34:00" (1/1) ... [2024-12-02 12:34:01,193 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:34:00" (1/1) ... [2024-12-02 12:34:01,197 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:34:00" (1/1) ... [2024-12-02 12:34:01,205 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:34:00" (1/1) ... [2024-12-02 12:34:01,210 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:34:00" (1/1) ... [2024-12-02 12:34:01,221 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 12:34:01,222 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 12:34:01,222 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 12:34:01,222 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 12:34:01,223 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:34:00" (1/1) ... [2024-12-02 12:34:01,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:34:01,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e02296-fb18-4dcf-b269-86ca8c11c97d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:34:01,252 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e02296-fb18-4dcf-b269-86ca8c11c97d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 12:34:01,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e02296-fb18-4dcf-b269-86ca8c11c97d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 12:34:01,278 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-12-02 12:34:01,278 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-12-02 12:34:01,278 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2024-12-02 12:34:01,278 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2024-12-02 12:34:01,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 12:34:01,278 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-12-02 12:34:01,278 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-12-02 12:34:01,278 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_append [2024-12-02 12:34:01,278 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_append [2024-12-02 12:34:01,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-12-02 12:34:01,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-12-02 12:34:01,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-12-02 12:34:01,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-12-02 12:34:01,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-12-02 12:34:01,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-12-02 12:34:01,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-12-02 12:34:01,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-12-02 12:34:01,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 12:34:01,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 12:34:01,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 12:34:01,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 12:34:01,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 12:34:01,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-12-02 12:34:01,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-12-02 12:34:01,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-12-02 12:34:01,280 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-12-02 12:34:01,280 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-12-02 12:34:01,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-12-02 12:34:01,280 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-12-02 12:34:01,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 12:34:01,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 12:34:01,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 12:34:01,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 12:34:01,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 12:34:01,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-12-02 12:34:01,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-12-02 12:34:01,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-12-02 12:34:01,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-12-02 12:34:01,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-12-02 12:34:01,281 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2024-12-02 12:34:01,281 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2024-12-02 12:34:01,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 12:34:01,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 12:34:01,281 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-12-02 12:34:01,281 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-12-02 12:34:01,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-12-02 12:34:01,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-12-02 12:34:01,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-12-02 12:34:01,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-12-02 12:34:01,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-12-02 12:34:01,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-12-02 12:34:01,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-12-02 12:34:01,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-12-02 12:34:01,282 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 12:34:01,282 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 12:34:01,282 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2024-12-02 12:34:01,282 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2024-12-02 12:34:01,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 12:34:01,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 12:34:01,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 12:34:01,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 12:34:01,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-12-02 12:34:01,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-12-02 12:34:01,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-12-02 12:34:01,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-12-02 12:34:01,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-12-02 12:34:01,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-12-02 12:34:01,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-12-02 12:34:01,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-12-02 12:34:01,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-12-02 12:34:01,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-12-02 12:34:01,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-12-02 12:34:01,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-12-02 12:34:01,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-12-02 12:34:01,283 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-12-02 12:34:01,283 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-12-02 12:34:01,284 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2024-12-02 12:34:01,284 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2024-12-02 12:34:01,284 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-12-02 12:34:01,284 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-12-02 12:34:01,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 12:34:01,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 12:34:01,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 12:34:01,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 12:34:01,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 12:34:01,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-12-02 12:34:01,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-12-02 12:34:01,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-12-02 12:34:01,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 12:34:01,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 12:34:01,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 12:34:01,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 12:34:01,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 12:34:01,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 12:34:01,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 12:34:01,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 12:34:01,553 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 12:34:01,554 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 12:34:08,980 INFO L? ?]: Removed 97 outVars from TransFormulas that were not future-live. [2024-12-02 12:34:08,980 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 12:34:08,992 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 12:34:08,992 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 12:34:08,992 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:34:08 BoogieIcfgContainer [2024-12-02 12:34:08,993 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 12:34:08,994 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 12:34:08,995 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 12:34:08,999 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 12:34:08,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:33:58" (1/3) ... [2024-12-02 12:34:08,999 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbf36f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:34:08, skipping insertion in model container [2024-12-02 12:34:08,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:34:00" (2/3) ... [2024-12-02 12:34:09,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbf36f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:34:09, skipping insertion in model container [2024-12-02 12:34:09,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:34:08" (3/3) ... [2024-12-02 12:34:09,001 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_harness.i [2024-12-02 12:34:09,014 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 12:34:09,015 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_buf_append_harness.i that has 14 procedures, 170 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 12:34:09,063 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:34:09,074 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;@72131129, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:34:09,074 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 12:34:09,078 INFO L276 IsEmpty]: Start isEmpty. Operand has 170 states, 107 states have (on average 1.2149532710280373) internal successors, (130), 108 states have internal predecessors, (130), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-12-02 12:34:09,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-12-02 12:34:09,086 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:34:09,087 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:34:09,087 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:34:09,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:34:09,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1551601725, now seen corresponding path program 1 times [2024-12-02 12:34:09,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:34:09,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625547561] [2024-12-02 12:34:09,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:34:09,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:35:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:35:31,861 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-12-02 12:35:31,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:35:31,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625547561] [2024-12-02 12:35:31,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625547561] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:35:31,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047275012] [2024-12-02 12:35:31,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:35:31,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:35:31,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e02296-fb18-4dcf-b269-86ca8c11c97d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:35:31,865 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e02296-fb18-4dcf-b269-86ca8c11c97d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:35:31,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e02296-fb18-4dcf-b269-86ca8c11c97d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 12:36:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:36:56,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 7723 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 12:36:56,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:36:56,873 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-12-02 12:36:56,874 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:36:56,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047275012] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:36:56,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:36:56,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 12:36:56,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547915201] [2024-12-02 12:36:56,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:36:56,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 12:36:56,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:36:56,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 12:36:56,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 12:36:56,898 INFO L87 Difference]: Start difference. First operand has 170 states, 107 states have (on average 1.2149532710280373) internal successors, (130), 108 states have internal predecessors, (130), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 12:36:56,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:36:56,931 INFO L93 Difference]: Finished difference Result 336 states and 480 transitions. [2024-12-02 12:36:56,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 12:36:56,933 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 97 [2024-12-02 12:36:56,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:36:56,939 INFO L225 Difference]: With dead ends: 336 [2024-12-02 12:36:56,939 INFO L226 Difference]: Without dead ends: 165 [2024-12-02 12:36:56,942 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 12:36:56,944 INFO L435 NwaCegarLoop]: 223 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:36:56,944 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:36:56,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-12-02 12:36:56,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2024-12-02 12:36:56,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 103 states have (on average 1.1941747572815533) internal successors, (123), 104 states have internal predecessors, (123), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-12-02 12:36:56,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 218 transitions. [2024-12-02 12:36:56,978 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 218 transitions. Word has length 97 [2024-12-02 12:36:56,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:36:56,978 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 218 transitions. [2024-12-02 12:36:56,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 12:36:56,978 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 218 transitions. [2024-12-02 12:36:56,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-12-02 12:36:56,981 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:36:56,981 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:36:57,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e02296-fb18-4dcf-b269-86ca8c11c97d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 12:36:57,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e02296-fb18-4dcf-b269-86ca8c11c97d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 12:36:57,181 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:36:57,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:36:57,182 INFO L85 PathProgramCache]: Analyzing trace with hash -435313613, now seen corresponding path program 1 times [2024-12-02 12:36:57,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:36:57,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612326458] [2024-12-02 12:36:57,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:36:57,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:38:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:38:21,539 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-12-02 12:38:21,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:38:21,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612326458] [2024-12-02 12:38:21,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612326458] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:38:21,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904422449] [2024-12-02 12:38:21,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:38:21,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:38:21,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e02296-fb18-4dcf-b269-86ca8c11c97d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:38:21,543 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e02296-fb18-4dcf-b269-86ca8c11c97d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:38:21,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e02296-fb18-4dcf-b269-86ca8c11c97d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 12:39:45,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:39:46,000 INFO L256 TraceCheckSpWp]: Trace formula consists of 7723 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 12:39:46,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:39:47,173 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 58 proven. 15 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-12-02 12:39:47,173 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:39:48,551 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-12-02 12:39:48,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904422449] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:39:48,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:39:48,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2024-12-02 12:39:48,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763392652] [2024-12-02 12:39:48,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:39:48,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 12:39:48,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:39:48,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 12:39:48,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:39:48,555 INFO L87 Difference]: Start difference. First operand 165 states and 218 transitions. Second operand has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 states have internal predecessors, (98), 7 states have call successors, (38), 3 states have call predecessors, (38), 5 states have return successors, (36), 7 states have call predecessors, (36), 7 states have call successors, (36) [2024-12-02 12:39:50,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:39:50,883 INFO L93 Difference]: Finished difference Result 319 states and 428 transitions. [2024-12-02 12:39:50,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 12:39:50,884 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 states have internal predecessors, (98), 7 states have call successors, (38), 3 states have call predecessors, (38), 5 states have return successors, (36), 7 states have call predecessors, (36), 7 states have call successors, (36) Word has length 97 [2024-12-02 12:39:50,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:39:50,887 INFO L225 Difference]: With dead ends: 319 [2024-12-02 12:39:50,887 INFO L226 Difference]: Without dead ends: 171 [2024-12-02 12:39:50,888 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2024-12-02 12:39:50,889 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 220 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 12:39:50,889 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 989 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 12:39:50,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-12-02 12:39:50,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2024-12-02 12:39:50,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 107 states have (on average 1.1869158878504673) internal successors, (127), 110 states have internal predecessors, (127), 48 states have call successors, (48), 13 states have call predecessors, (48), 15 states have return successors, (53), 47 states have call predecessors, (53), 47 states have call successors, (53) [2024-12-02 12:39:50,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 228 transitions. [2024-12-02 12:39:50,906 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 228 transitions. Word has length 97 [2024-12-02 12:39:50,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:39:50,906 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 228 transitions. [2024-12-02 12:39:50,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 states have internal predecessors, (98), 7 states have call successors, (38), 3 states have call predecessors, (38), 5 states have return successors, (36), 7 states have call predecessors, (36), 7 states have call successors, (36) [2024-12-02 12:39:50,907 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 228 transitions. [2024-12-02 12:39:50,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 12:39:50,908 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:39:50,908 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:39:50,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e02296-fb18-4dcf-b269-86ca8c11c97d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-02 12:39:51,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e02296-fb18-4dcf-b269-86ca8c11c97d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:39:51,109 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:39:51,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:39:51,109 INFO L85 PathProgramCache]: Analyzing trace with hash 188239619, now seen corresponding path program 1 times [2024-12-02 12:39:51,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:39:51,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101942285] [2024-12-02 12:39:51,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:39:51,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:41:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:41:19,243 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-12-02 12:41:19,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:41:19,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101942285] [2024-12-02 12:41:19,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101942285] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:41:19,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:41:19,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 12:41:19,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674695753] [2024-12-02 12:41:19,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:41:19,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 12:41:19,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:41:19,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 12:41:19,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:41:19,246 INFO L87 Difference]: Start difference. First operand 171 states and 228 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2024-12-02 12:41:19,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:41:19,830 INFO L93 Difference]: Finished difference Result 300 states and 401 transitions. [2024-12-02 12:41:19,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 12:41:19,830 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 105 [2024-12-02 12:41:19,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:41:19,833 INFO L225 Difference]: With dead ends: 300 [2024-12-02 12:41:19,833 INFO L226 Difference]: Without dead ends: 168 [2024-12-02 12:41:19,834 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:41:19,836 INFO L435 NwaCegarLoop]: 203 mSDtfsCounter, 46 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 12:41:19,836 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 909 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 12:41:19,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-12-02 12:41:19,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-12-02 12:41:19,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 105 states have (on average 1.180952380952381) internal successors, (124), 107 states have internal predecessors, (124), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2024-12-02 12:41:19,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 222 transitions. [2024-12-02 12:41:19,857 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 222 transitions. Word has length 105 [2024-12-02 12:41:19,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:41:19,858 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 222 transitions. [2024-12-02 12:41:19,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2024-12-02 12:41:19,858 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 222 transitions. [2024-12-02 12:41:19,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-12-02 12:41:19,860 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:41:19,860 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:41:19,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 12:41:19,860 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:41:19,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:41:19,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1990984498, now seen corresponding path program 1 times [2024-12-02 12:41:19,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:41:19,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365142461] [2024-12-02 12:41:19,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:41:19,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:42:41,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:42:43,633 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-12-02 12:42:43,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:42:43,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365142461] [2024-12-02 12:42:43,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365142461] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:42:43,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:42:43,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 12:42:43,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815356967] [2024-12-02 12:42:43,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:42:43,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 12:42:43,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:42:43,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 12:42:43,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:42:43,636 INFO L87 Difference]: Start difference. First operand 168 states and 222 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-12-02 12:42:44,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:42:44,179 INFO L93 Difference]: Finished difference Result 291 states and 384 transitions. [2024-12-02 12:42:44,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 12:42:44,180 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 111 [2024-12-02 12:42:44,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:42:44,182 INFO L225 Difference]: With dead ends: 291 [2024-12-02 12:42:44,182 INFO L226 Difference]: Without dead ends: 165 [2024-12-02 12:42:44,183 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:42:44,184 INFO L435 NwaCegarLoop]: 203 mSDtfsCounter, 43 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 12:42:44,184 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 923 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 12:42:44,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-12-02 12:42:44,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2024-12-02 12:42:44,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 103 states have (on average 1.174757281553398) internal successors, (121), 104 states have internal predecessors, (121), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-12-02 12:42:44,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 216 transitions. [2024-12-02 12:42:44,196 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 216 transitions. Word has length 111 [2024-12-02 12:42:44,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:42:44,197 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 216 transitions. [2024-12-02 12:42:44,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-12-02 12:42:44,197 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 216 transitions. [2024-12-02 12:42:44,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-12-02 12:42:44,198 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:42:44,198 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:42:44,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 12:42:44,199 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:42:44,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:42:44,199 INFO L85 PathProgramCache]: Analyzing trace with hash -256882029, now seen corresponding path program 1 times [2024-12-02 12:42:44,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:42:44,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390130135] [2024-12-02 12:42:44,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:42:44,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:44:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:44:11,534 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-12-02 12:44:11,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:44:11,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390130135] [2024-12-02 12:44:11,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390130135] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:44:11,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:44:11,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 12:44:11,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607486318] [2024-12-02 12:44:11,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:44:11,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 12:44:11,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:44:11,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 12:44:11,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:44:11,536 INFO L87 Difference]: Start difference. First operand 165 states and 216 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 12:44:13,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:44:13,569 INFO L93 Difference]: Finished difference Result 322 states and 428 transitions. [2024-12-02 12:44:13,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 12:44:13,570 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 113 [2024-12-02 12:44:13,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:44:13,573 INFO L225 Difference]: With dead ends: 322 [2024-12-02 12:44:13,573 INFO L226 Difference]: Without dead ends: 206 [2024-12-02 12:44:13,574 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:44:13,574 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 38 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-02 12:44:13,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 1333 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-02 12:44:13,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-12-02 12:44:13,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 192. [2024-12-02 12:44:13,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 124 states have (on average 1.1774193548387097) internal successors, (146), 126 states have internal predecessors, (146), 52 states have call successors, (52), 14 states have call predecessors, (52), 15 states have return successors, (57), 51 states have call predecessors, (57), 51 states have call successors, (57) [2024-12-02 12:44:13,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 255 transitions. [2024-12-02 12:44:13,590 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 255 transitions. Word has length 113 [2024-12-02 12:44:13,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:44:13,591 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 255 transitions. [2024-12-02 12:44:13,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 12:44:13,591 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 255 transitions. [2024-12-02 12:44:13,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 12:44:13,592 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:44:13,592 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:44:13,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 12:44:13,592 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:44:13,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:44:13,593 INFO L85 PathProgramCache]: Analyzing trace with hash 705413659, now seen corresponding path program 1 times [2024-12-02 12:44:13,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:44:13,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156631323] [2024-12-02 12:44:13,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:44:13,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:45:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:45:39,369 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-12-02 12:45:39,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:45:39,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156631323] [2024-12-02 12:45:39,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156631323] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:45:39,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730234110] [2024-12-02 12:45:39,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:45:39,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:45:39,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e02296-fb18-4dcf-b269-86ca8c11c97d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:45:39,372 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e02296-fb18-4dcf-b269-86ca8c11c97d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:45:39,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e02296-fb18-4dcf-b269-86ca8c11c97d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 12:47:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:47:01,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 7779 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-12-02 12:47:01,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:47:02,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 12:47:03,941 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-12-02 12:47:03,941 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:47:03,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730234110] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:47:03,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:47:03,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 20 [2024-12-02 12:47:03,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590674052] [2024-12-02 12:47:03,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:47:03,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 12:47:03,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:47:03,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 12:47:03,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2024-12-02 12:47:03,943 INFO L87 Difference]: Start difference. First operand 192 states and 255 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-12-02 12:47:07,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 12:47:12,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 12:47:20,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 12:47:25,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 12:47:25,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:47:25,656 INFO L93 Difference]: Finished difference Result 472 states and 627 transitions. [2024-12-02 12:47:25,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 12:47:25,656 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 117 [2024-12-02 12:47:25,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:47:25,658 INFO L225 Difference]: With dead ends: 472 [2024-12-02 12:47:25,658 INFO L226 Difference]: Without dead ends: 297 [2024-12-02 12:47:25,659 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2024-12-02 12:47:25,659 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 186 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 8 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:47:25,660 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 1448 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 656 Invalid, 4 Unknown, 0 Unchecked, 21.0s Time] [2024-12-02 12:47:25,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2024-12-02 12:47:25,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 285. [2024-12-02 12:47:25,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 187 states have (on average 1.1871657754010696) internal successors, (222), 191 states have internal predecessors, (222), 72 states have call successors, (72), 22 states have call predecessors, (72), 25 states have return successors, (82), 71 states have call predecessors, (82), 70 states have call successors, (82) [2024-12-02 12:47:25,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 376 transitions. [2024-12-02 12:47:25,691 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 376 transitions. Word has length 117 [2024-12-02 12:47:25,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:47:25,691 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 376 transitions. [2024-12-02 12:47:25,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-12-02 12:47:25,691 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 376 transitions. [2024-12-02 12:47:25,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-12-02 12:47:25,693 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:47:25,693 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:47:25,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e02296-fb18-4dcf-b269-86ca8c11c97d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-12-02 12:47:25,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e02296-fb18-4dcf-b269-86ca8c11c97d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:47:25,893 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:47:25,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:47:25,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1675112605, now seen corresponding path program 1 times [2024-12-02 12:47:25,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:47:25,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227348890] [2024-12-02 12:47:25,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:47:25,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms