./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_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_c8302db9-031e-44e0-ba88-877fadd2473a/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8302db9-031e-44e0-ba88-877fadd2473a/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8302db9-031e-44e0-ba88-877fadd2473a/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8302db9-031e-44e0-ba88-877fadd2473a/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8302db9-031e-44e0-ba88-877fadd2473a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8302db9-031e-44e0-ba88-877fadd2473a/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 8de283a79f01a407383b7daa040c59e7c5c73f52f0f9c705f7021a208716cd24 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:58:24,635 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:58:24,733 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8302db9-031e-44e0-ba88-877fadd2473a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-28 02:58:24,741 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:58:24,741 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:58:24,779 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:58:24,780 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:58:24,781 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:58:24,781 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:58:24,781 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:58:24,782 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:58:24,783 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:58:24,783 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:58:24,783 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:58:24,783 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:58:24,784 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:58:24,784 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:58:24,785 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:58:24,785 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:58:24,785 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:58:24,785 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:58:24,785 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:58:24,785 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:58:24,785 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:58:24,785 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:58:24,786 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:58:24,786 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:58:24,786 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:58:24,786 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:58:24,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:58:24,786 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:58:24,786 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:58:24,787 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:58:24,787 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:58:24,788 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:58:24,788 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:58:24,788 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:58:24,788 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:58:24,788 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:58:24,788 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:58:24,788 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:58:24,788 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:58:24,789 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:58:24,789 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:58:24,789 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:58:24,789 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_c8302db9-031e-44e0-ba88-877fadd2473a/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8de283a79f01a407383b7daa040c59e7c5c73f52f0f9c705f7021a208716cd24 [2024-11-28 02:58:25,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:58:25,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:58:25,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:58:25,118 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:58:25,119 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:58:25,121 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8302db9-031e-44e0-ba88-877fadd2473a/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i [2024-11-28 02:58:28,194 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8302db9-031e-44e0-ba88-877fadd2473a/bin/uautomizer-verify-aQ6SnzHsRB/data/f38ff472a/73ea3690bf94415ea9c5275a7f6d3368/FLAGf4ff8f96d [2024-11-28 02:58:28,955 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:58:28,957 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8302db9-031e-44e0-ba88-877fadd2473a/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i [2024-11-28 02:58:29,013 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8302db9-031e-44e0-ba88-877fadd2473a/bin/uautomizer-verify-aQ6SnzHsRB/data/f38ff472a/73ea3690bf94415ea9c5275a7f6d3368/FLAGf4ff8f96d [2024-11-28 02:58:29,037 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8302db9-031e-44e0-ba88-877fadd2473a/bin/uautomizer-verify-aQ6SnzHsRB/data/f38ff472a/73ea3690bf94415ea9c5275a7f6d3368 [2024-11-28 02:58:29,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:58:29,042 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:58:29,046 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:58:29,047 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:58:29,056 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:58:29,057 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:29" (1/1) ... [2024-11-28 02:58:29,059 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62401f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:29, skipping insertion in model container [2024-11-28 02:58:29,059 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:29" (1/1) ... [2024-11-28 02:58:29,166 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:58:29,433 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_c8302db9-031e-44e0-ba88-877fadd2473a/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i[4498,4511] [2024-11-28 02:58:29,443 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_c8302db9-031e-44e0-ba88-877fadd2473a/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i[4558,4571] [2024-11-28 02:58:30,637 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:58:30,638 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:58:30,639 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:58:30,640 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:58:30,641 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:58:30,661 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:58:30,662 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:58:30,665 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:58:30,666 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:58:31,818 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:58:31,819 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:58:31,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:58:32,047 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:58:32,068 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_c8302db9-031e-44e0-ba88-877fadd2473a/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i[4498,4511] [2024-11-28 02:58:32,072 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_c8302db9-031e-44e0-ba88-877fadd2473a/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i[4558,4571] [2024-11-28 02:58:32,150 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:58:32,150 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:58:32,151 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:58:32,151 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:58:32,151 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:58:32,162 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:58:32,163 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:58:32,165 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:58:32,165 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:58:32,439 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8277] [2024-11-28 02:58:32,442 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:58:32,443 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:58:32,464 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8763-8774] [2024-11-28 02:58:32,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:58:32,796 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:58:32,797 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:32 WrapperNode [2024-11-28 02:58:32,797 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:58:32,798 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:58:32,798 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:58:32,798 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:58:32,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:32" (1/1) ... [2024-11-28 02:58:32,903 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:32" (1/1) ... [2024-11-28 02:58:32,982 INFO L138 Inliner]: procedures = 680, calls = 2609, calls flagged for inlining = 58, calls inlined = 4, statements flattened = 774 [2024-11-28 02:58:32,982 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:58:32,983 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:58:32,983 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:58:32,983 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:58:32,994 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:32" (1/1) ... [2024-11-28 02:58:32,994 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:32" (1/1) ... [2024-11-28 02:58:33,001 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:32" (1/1) ... [2024-11-28 02:58:33,083 INFO L175 MemorySlicer]: Split 514 memory accesses to 6 slices as follows [2, 259, 238, 4, 6, 5]. 50 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 0, 6, 0, 0, 5]. The 491 writes are split as follows [0, 257, 232, 0, 2, 0]. [2024-11-28 02:58:33,083 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:32" (1/1) ... [2024-11-28 02:58:33,084 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:32" (1/1) ... [2024-11-28 02:58:33,112 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:32" (1/1) ... [2024-11-28 02:58:33,114 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:32" (1/1) ... [2024-11-28 02:58:33,121 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:32" (1/1) ... [2024-11-28 02:58:33,129 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:32" (1/1) ... [2024-11-28 02:58:33,141 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:32" (1/1) ... [2024-11-28 02:58:33,159 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:58:33,159 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:58:33,159 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:58:33,160 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:58:33,164 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:32" (1/1) ... [2024-11-28 02:58:33,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:58:33,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8302db9-031e-44e0-ba88-877fadd2473a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:33,209 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8302db9-031e-44e0-ba88-877fadd2473a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:58:33,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8302db9-031e-44e0-ba88-877fadd2473a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:58:33,290 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_ignore_case [2024-11-28 02:58:33,297 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_ignore_case [2024-11-28 02:58:33,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:58:33,297 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-28 02:58:33,297 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-28 02:58:33,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-28 02:58:33,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-28 02:58:33,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-28 02:58:33,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-28 02:58:33,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-28 02:58:33,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-28 02:58:33,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:58:33,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:58:33,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 02:58:33,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 02:58:33,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 02:58:33,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-28 02:58:33,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 02:58:33,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 02:58:33,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 02:58:33,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:58:33,298 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2024-11-28 02:58:33,298 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2024-11-28 02:58:33,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:58:33,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:58:33,298 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-28 02:58:33,298 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-28 02:58:33,298 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-11-28 02:58:33,298 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-11-28 02:58:33,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-28 02:58:33,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-28 02:58:33,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-28 02:58:33,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-28 02:58:33,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-28 02:58:33,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-28 02:58:33,299 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2024-11-28 02:58:33,299 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2024-11-28 02:58:33,299 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 02:58:33,299 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 02:58:33,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:58:33,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 02:58:33,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 02:58:33,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 02:58:33,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-28 02:58:33,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-28 02:58:33,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-28 02:58:33,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:58:33,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:58:33,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 02:58:33,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 02:58:33,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 02:58:33,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-28 02:58:33,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:58:33,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:58:33,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:58:33,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 02:58:33,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 02:58:33,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 02:58:33,740 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:58:33,742 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:58:42,995 INFO L? ?]: Removed 44 outVars from TransFormulas that were not future-live. [2024-11-28 02:58:42,995 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:58:43,005 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:58:43,006 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 02:58:43,006 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:43 BoogieIcfgContainer [2024-11-28 02:58:43,006 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:58:43,008 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:58:43,008 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:58:43,014 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:58:43,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:58:29" (1/3) ... [2024-11-28 02:58:43,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14e73f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:43, skipping insertion in model container [2024-11-28 02:58:43,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:32" (2/3) ... [2024-11-28 02:58:43,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14e73f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:43, skipping insertion in model container [2024-11-28 02:58:43,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:43" (3/3) ... [2024-11-28 02:58:43,017 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_array_eq_ignore_case_harness.i [2024-11-28 02:58:43,032 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:58:43,034 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_array_eq_ignore_case_harness.i that has 9 procedures, 77 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:58:43,091 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:58:43,107 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;@674c2b29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:58:43,107 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:58:43,112 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 47 states have (on average 1.297872340425532) internal successors, (61), 51 states have internal predecessors, (61), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-28 02:58:43,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-28 02:58:43,121 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:43,122 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2024-11-28 02:58:43,123 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:58:43,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:43,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1693087987, now seen corresponding path program 1 times [2024-11-28 02:58:43,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:43,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310307284] [2024-11-28 02:58:43,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:43,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:09,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:13,562 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-28 03:00:13,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:13,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310307284] [2024-11-28 03:00:13,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310307284] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:13,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:00:13,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:00:13,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686326676] [2024-11-28 03:00:13,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:13,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:00:13,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:13,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:00:13,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:00:13,598 INFO L87 Difference]: Start difference. First operand has 77 states, 47 states have (on average 1.297872340425532) internal successors, (61), 51 states have internal predecessors, (61), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-28 03:00:13,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:00:13,745 INFO L93 Difference]: Finished difference Result 154 states and 220 transitions. [2024-11-28 03:00:13,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:00:13,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 65 [2024-11-28 03:00:13,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:00:13,757 INFO L225 Difference]: With dead ends: 154 [2024-11-28 03:00:13,758 INFO L226 Difference]: Without dead ends: 75 [2024-11-28 03:00:13,762 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 [2024-11-28 03:00:13,767 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 0 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:00:13,768 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 285 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:00:13,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-28 03:00:13,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-28 03:00:13,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 48 states have internal predecessors, (55), 20 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (20), 20 states have call predecessors, (20), 19 states have call successors, (20) [2024-11-28 03:00:13,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 95 transitions. [2024-11-28 03:00:13,820 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 95 transitions. Word has length 65 [2024-11-28 03:00:13,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:00:13,823 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 95 transitions. [2024-11-28 03:00:13,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-28 03:00:13,823 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 95 transitions. [2024-11-28 03:00:13,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-28 03:00:13,828 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:00:13,829 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2024-11-28 03:00:13,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:00:13,830 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:00:13,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:13,831 INFO L85 PathProgramCache]: Analyzing trace with hash 3462562, now seen corresponding path program 1 times [2024-11-28 03:00:13,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:13,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033690395] [2024-11-28 03:00:13,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:13,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:41,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:54,737 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-28 03:01:54,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:54,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033690395] [2024-11-28 03:01:54,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033690395] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:01:54,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129367383] [2024-11-28 03:01:54,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:54,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:54,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8302db9-031e-44e0-ba88-877fadd2473a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:01:54,741 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8302db9-031e-44e0-ba88-877fadd2473a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:01:54,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8302db9-031e-44e0-ba88-877fadd2473a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:03:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:22,575 INFO L256 TraceCheckSpWp]: Trace formula consists of 7540 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-28 03:03:22,587 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:25,296 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-28 03:03:25,296 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:03:28,074 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-28 03:03:28,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129367383] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:03:28,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:03:28,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 14] total 23 [2024-11-28 03:03:28,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002763013] [2024-11-28 03:03:28,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:03:28,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 03:03:28,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:28,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 03:03:28,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2024-11-28 03:03:28,080 INFO L87 Difference]: Start difference. First operand 75 states and 95 transitions. Second operand has 23 states, 21 states have (on average 2.142857142857143) internal successors, (45), 17 states have internal predecessors, (45), 7 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (19), 10 states have call predecessors, (19), 7 states have call successors, (19) [2024-11-28 03:03:32,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:32,596 INFO L93 Difference]: Finished difference Result 144 states and 200 transitions. [2024-11-28 03:03:32,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 03:03:32,597 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.142857142857143) internal successors, (45), 17 states have internal predecessors, (45), 7 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (19), 10 states have call predecessors, (19), 7 states have call successors, (19) Word has length 67 [2024-11-28 03:03:32,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:32,601 INFO L225 Difference]: With dead ends: 144 [2024-11-28 03:03:32,601 INFO L226 Difference]: Without dead ends: 128 [2024-11-28 03:03:32,602 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=109, Invalid=703, Unknown=0, NotChecked=0, Total=812 [2024-11-28 03:03:32,603 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 28 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 1355 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:32,603 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 1355 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-28 03:03:32,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-28 03:03:32,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 105. [2024-11-28 03:03:32,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 60 states have (on average 1.2) internal successors, (72), 64 states have internal predecessors, (72), 33 states have call successors, (33), 9 states have call predecessors, (33), 11 states have return successors, (37), 34 states have call predecessors, (37), 32 states have call successors, (37) [2024-11-28 03:03:32,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 142 transitions. [2024-11-28 03:03:32,624 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 142 transitions. Word has length 67 [2024-11-28 03:03:32,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:32,625 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 142 transitions. [2024-11-28 03:03:32,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.142857142857143) internal successors, (45), 17 states have internal predecessors, (45), 7 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (19), 10 states have call predecessors, (19), 7 states have call successors, (19) [2024-11-28 03:03:32,625 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 142 transitions. [2024-11-28 03:03:32,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-28 03:03:32,628 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:32,628 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2024-11-28 03:03:32,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8302db9-031e-44e0-ba88-877fadd2473a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 03:03:32,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8302db9-031e-44e0-ba88-877fadd2473a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:32,829 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:32,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:32,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1589261047, now seen corresponding path program 1 times [2024-11-28 03:03:32,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:32,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373980544] [2024-11-28 03:03:32,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:32,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:59,144 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-28 03:04:59,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:59,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373980544] [2024-11-28 03:04:59,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373980544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:04:59,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:04:59,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 03:04:59,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748993461] [2024-11-28 03:04:59,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:04:59,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 03:04:59,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:59,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 03:04:59,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:04:59,146 INFO L87 Difference]: Start difference. First operand 105 states and 142 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 03:04:59,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:04:59,760 INFO L93 Difference]: Finished difference Result 142 states and 193 transitions. [2024-11-28 03:04:59,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:04:59,760 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 70 [2024-11-28 03:04:59,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:04:59,763 INFO L225 Difference]: With dead ends: 142 [2024-11-28 03:04:59,763 INFO L226 Difference]: Without dead ends: 115 [2024-11-28 03:04:59,764 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:04:59,765 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 20 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:04:59,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 714 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:04:59,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-28 03:04:59,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2024-11-28 03:04:59,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 64 states have (on average 1.203125) internal successors, (77), 69 states have internal predecessors, (77), 36 states have call successors, (36), 10 states have call predecessors, (36), 12 states have return successors, (41), 36 states have call predecessors, (41), 35 states have call successors, (41) [2024-11-28 03:04:59,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 154 transitions. [2024-11-28 03:04:59,783 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 154 transitions. Word has length 70 [2024-11-28 03:04:59,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:04:59,783 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 154 transitions. [2024-11-28 03:04:59,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 03:04:59,783 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 154 transitions. [2024-11-28 03:04:59,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-28 03:04:59,787 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:04:59,787 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 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] [2024-11-28 03:04:59,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:04:59,788 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:04:59,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:59,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1162044381, now seen corresponding path program 1 times [2024-11-28 03:04:59,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:59,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363885194] [2024-11-28 03:04:59,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:59,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:37,504 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-28 03:06:37,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:37,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363885194] [2024-11-28 03:06:37,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363885194] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:06:37,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027488951] [2024-11-28 03:06:37,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:37,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:37,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8302db9-031e-44e0-ba88-877fadd2473a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:06:37,508 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8302db9-031e-44e0-ba88-877fadd2473a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:06:37,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8302db9-031e-44e0-ba88-877fadd2473a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:08:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:07,028 INFO L256 TraceCheckSpWp]: Trace formula consists of 7579 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-28 03:08:07,038 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:08:10,895 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-28 03:08:10,895 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:08:14,326 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-28 03:08:14,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027488951] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:08:14,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:08:14,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 15] total 28 [2024-11-28 03:08:14,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763520206] [2024-11-28 03:08:14,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:08:14,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 03:08:14,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:14,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 03:08:14,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2024-11-28 03:08:14,333 INFO L87 Difference]: Start difference. First operand 113 states and 154 transitions. Second operand has 28 states, 25 states have (on average 2.24) internal successors, (56), 19 states have internal predecessors, (56), 9 states have call successors, (27), 3 states have call predecessors, (27), 6 states have return successors, (27), 14 states have call predecessors, (27), 9 states have call successors, (27) [2024-11-28 03:08:22,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:22,355 INFO L93 Difference]: Finished difference Result 189 states and 261 transitions. [2024-11-28 03:08:22,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 03:08:22,356 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 2.24) internal successors, (56), 19 states have internal predecessors, (56), 9 states have call successors, (27), 3 states have call predecessors, (27), 6 states have return successors, (27), 14 states have call predecessors, (27), 9 states have call successors, (27) Word has length 83 [2024-11-28 03:08:22,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:22,358 INFO L225 Difference]: With dead ends: 189 [2024-11-28 03:08:22,359 INFO L226 Difference]: Without dead ends: 163 [2024-11-28 03:08:22,360 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=160, Invalid=1322, Unknown=0, NotChecked=0, Total=1482 [2024-11-28 03:08:22,361 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 36 mSDsluCounter, 1736 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:22,361 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 1823 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-11-28 03:08:22,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-28 03:08:22,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 135. [2024-11-28 03:08:22,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 76 states have (on average 1.1710526315789473) internal successors, (89), 80 states have internal predecessors, (89), 44 states have call successors, (44), 12 states have call predecessors, (44), 14 states have return successors, (52), 46 states have call predecessors, (52), 43 states have call successors, (52) [2024-11-28 03:08:22,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 185 transitions. [2024-11-28 03:08:22,382 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 185 transitions. Word has length 83 [2024-11-28 03:08:22,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:22,383 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 185 transitions. [2024-11-28 03:08:22,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 2.24) internal successors, (56), 19 states have internal predecessors, (56), 9 states have call successors, (27), 3 states have call predecessors, (27), 6 states have return successors, (27), 14 states have call predecessors, (27), 9 states have call successors, (27) [2024-11-28 03:08:22,383 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 185 transitions. [2024-11-28 03:08:22,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-28 03:08:22,386 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:22,386 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2024-11-28 03:08:22,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8302db9-031e-44e0-ba88-877fadd2473a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:08:22,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8302db9-031e-44e0-ba88-877fadd2473a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-28 03:08:22,586 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:08:22,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:22,587 INFO L85 PathProgramCache]: Analyzing trace with hash 417174913, now seen corresponding path program 1 times [2024-11-28 03:08:22,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:22,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461937762] [2024-11-28 03:08:22,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:22,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:09:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:09:48,797 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-28 03:09:48,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:09:48,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461937762] [2024-11-28 03:09:48,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461937762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:09:48,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:09:48,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:09:48,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204540290] [2024-11-28 03:09:48,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:09:48,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:09:48,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:09:48,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:09:48,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:09:48,800 INFO L87 Difference]: Start difference. First operand 135 states and 185 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-28 03:09:48,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:09:48,884 INFO L93 Difference]: Finished difference Result 157 states and 210 transitions. [2024-11-28 03:09:48,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:09:48,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 82 [2024-11-28 03:09:48,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:09:48,887 INFO L225 Difference]: With dead ends: 157 [2024-11-28 03:09:48,887 INFO L226 Difference]: Without dead ends: 135 [2024-11-28 03:09:48,887 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 [2024-11-28 03:09:48,891 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 0 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:09:48,892 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 268 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:09:48,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-28 03:09:48,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2024-11-28 03:09:48,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 76 states have (on average 1.131578947368421) internal successors, (86), 80 states have internal predecessors, (86), 44 states have call successors, (44), 12 states have call predecessors, (44), 14 states have return successors, (52), 46 states have call predecessors, (52), 43 states have call successors, (52) [2024-11-28 03:09:48,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 182 transitions. [2024-11-28 03:09:48,925 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 182 transitions. Word has length 82 [2024-11-28 03:09:48,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:09:48,926 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 182 transitions. [2024-11-28 03:09:48,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-28 03:09:48,926 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 182 transitions. [2024-11-28 03:09:48,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-28 03:09:48,929 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:09:48,930 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2024-11-28 03:09:48,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:09:48,930 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:09:48,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:09:48,931 INFO L85 PathProgramCache]: Analyzing trace with hash 585033864, now seen corresponding path program 1 times [2024-11-28 03:09:48,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:09:48,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307781695] [2024-11-28 03:09:48,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:09:48,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:11:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:19,776 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-28 03:11:19,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:11:19,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307781695] [2024-11-28 03:11:19,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307781695] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:11:19,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950082666] [2024-11-28 03:11:19,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:19,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:19,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8302db9-031e-44e0-ba88-877fadd2473a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:11:19,779 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8302db9-031e-44e0-ba88-877fadd2473a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:11:19,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8302db9-031e-44e0-ba88-877fadd2473a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process