./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness_negated.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_a82021eb-82fe-4bb1-bb64-b82c95f9ded9/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82021eb-82fe-4bb1-bb64-b82c95f9ded9/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_a82021eb-82fe-4bb1-bb64-b82c95f9ded9/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82021eb-82fe-4bb1-bb64-b82c95f9ded9/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82021eb-82fe-4bb1-bb64-b82c95f9ded9/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_a82021eb-82fe-4bb1-bb64-b82c95f9ded9/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 83ea83276c34d99791c615950bc2829f5984dafaf429e7a88fe36009fea1e8b3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 19:50:58,630 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 19:50:58,736 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82021eb-82fe-4bb1-bb64-b82c95f9ded9/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-27 19:50:58,744 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 19:50:58,748 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 19:50:58,786 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 19:50:58,786 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 19:50:58,786 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 19:50:58,787 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 19:50:58,787 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 19:50:58,787 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 19:50:58,787 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 19:50:58,788 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 19:50:58,788 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 19:50:58,788 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 19:50:58,788 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 19:50:58,788 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 19:50:58,788 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 19:50:58,788 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 19:50:58,789 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 19:50:58,789 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 19:50:58,789 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 19:50:58,789 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 19:50:58,789 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 19:50:58,789 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 19:50:58,789 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 19:50:58,789 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:50:58,790 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:50:58,790 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:50:58,790 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:50:58,790 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 19:50:58,790 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:50:58,790 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:50:58,790 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:50:58,790 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:50:58,791 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 19:50:58,791 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 19:50:58,791 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 19:50:58,791 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 19:50:58,791 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 19:50:58,791 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 19:50:58,791 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 19:50:58,791 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 19:50:58,792 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 19:50:58,792 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 19:50:58,792 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_a82021eb-82fe-4bb1-bb64-b82c95f9ded9/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 -> 83ea83276c34d99791c615950bc2829f5984dafaf429e7a88fe36009fea1e8b3 [2024-11-27 19:50:59,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 19:50:59,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 19:50:59,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 19:50:59,151 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 19:50:59,152 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 19:50:59,155 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82021eb-82fe-4bb1-bb64-b82c95f9ded9/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness_negated.i [2024-11-27 19:51:02,372 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82021eb-82fe-4bb1-bb64-b82c95f9ded9/bin/uautomizer-verify-aQ6SnzHsRB/data/a5ab18e28/9363f553343141ff8ccd8d35d9855961/FLAG9da479f30 [2024-11-27 19:51:03,144 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 19:51:03,147 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82021eb-82fe-4bb1-bb64-b82c95f9ded9/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness_negated.i [2024-11-27 19:51:03,196 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82021eb-82fe-4bb1-bb64-b82c95f9ded9/bin/uautomizer-verify-aQ6SnzHsRB/data/a5ab18e28/9363f553343141ff8ccd8d35d9855961/FLAG9da479f30 [2024-11-27 19:51:03,219 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82021eb-82fe-4bb1-bb64-b82c95f9ded9/bin/uautomizer-verify-aQ6SnzHsRB/data/a5ab18e28/9363f553343141ff8ccd8d35d9855961 [2024-11-27 19:51:03,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 19:51:03,226 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 19:51:03,227 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 19:51:03,227 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 19:51:03,232 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 19:51:03,235 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:51:03" (1/1) ... [2024-11-27 19:51:03,236 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b6fe43c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:51:03, skipping insertion in model container [2024-11-27 19:51:03,237 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:51:03" (1/1) ... [2024-11-27 19:51:03,381 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 19:51:03,719 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_a82021eb-82fe-4bb1-bb64-b82c95f9ded9/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness_negated.i[4494,4507] [2024-11-27 19:51:03,728 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_a82021eb-82fe-4bb1-bb64-b82c95f9ded9/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness_negated.i[4554,4567] [2024-11-27 19:51:05,019 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:51:05,020 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:51:05,021 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:51:05,023 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:51:05,024 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:51:05,043 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:51:05,044 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:51:05,047 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:51:05,049 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:51:06,081 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:51:06,082 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:51:06,204 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:51:06,205 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:51:06,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:51:06,328 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 19:51:06,347 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_a82021eb-82fe-4bb1-bb64-b82c95f9ded9/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness_negated.i[4494,4507] [2024-11-27 19:51:06,347 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_a82021eb-82fe-4bb1-bb64-b82c95f9ded9/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness_negated.i[4554,4567] [2024-11-27 19:51:06,425 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:51:06,425 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:51:06,426 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:51:06,426 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:51:06,428 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:51:06,441 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:51:06,441 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:51:06,446 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:51:06,448 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:51:06,582 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:51:06,583 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:51:06,696 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8283] [2024-11-27 19:51:06,698 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:51:06,698 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:51:06,725 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8769-8780] [2024-11-27 19:51:06,753 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:51:07,055 INFO L204 MainTranslator]: Completed translation [2024-11-27 19:51:07,055 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:51:07 WrapperNode [2024-11-27 19:51:07,055 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 19:51:07,056 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 19:51:07,056 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 19:51:07,057 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 19:51:07,063 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:51:07" (1/1) ... [2024-11-27 19:51:07,148 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:51:07" (1/1) ... [2024-11-27 19:51:07,274 INFO L138 Inliner]: procedures = 681, calls = 2620, calls flagged for inlining = 59, calls inlined = 10, statements flattened = 967 [2024-11-27 19:51:07,277 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 19:51:07,278 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 19:51:07,278 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 19:51:07,278 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 19:51:07,292 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:51:07" (1/1) ... [2024-11-27 19:51:07,292 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:51:07" (1/1) ... [2024-11-27 19:51:07,301 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:51:07" (1/1) ... [2024-11-27 19:51:07,386 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2024-11-27 19:51:07,386 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:51:07" (1/1) ... [2024-11-27 19:51:07,387 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:51:07" (1/1) ... [2024-11-27 19:51:07,455 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:51:07" (1/1) ... [2024-11-27 19:51:07,462 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:51:07" (1/1) ... [2024-11-27 19:51:07,471 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:51:07" (1/1) ... [2024-11-27 19:51:07,485 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:51:07" (1/1) ... [2024-11-27 19:51:07,492 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:51:07" (1/1) ... [2024-11-27 19:51:07,512 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 19:51:07,513 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 19:51:07,513 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 19:51:07,514 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 19:51:07,515 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:51:07" (1/1) ... [2024-11-27 19:51:07,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:51:07,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82021eb-82fe-4bb1-bb64-b82c95f9ded9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:51:07,561 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82021eb-82fe-4bb1-bb64-b82c95f9ded9/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 19:51:07,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82021eb-82fe-4bb1-bb64-b82c95f9ded9/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 19:51:07,599 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-11-27 19:51:07,599 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-11-27 19:51:07,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 19:51:07,600 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-27 19:51:07,600 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-27 19:51:07,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-27 19:51:07,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-27 19:51:07,602 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-27 19:51:07,602 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-27 19:51:07,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-27 19:51:07,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-27 19:51:07,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 19:51:07,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 19:51:07,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-27 19:51:07,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 19:51:07,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 19:51:07,604 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-27 19:51:07,604 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-27 19:51:07,604 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_realloc [2024-11-27 19:51:07,604 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_realloc [2024-11-27 19:51:07,604 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2024-11-27 19:51:07,604 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2024-11-27 19:51:07,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-27 19:51:07,604 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_reserve [2024-11-27 19:51:07,604 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_reserve [2024-11-27 19:51:07,604 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2024-11-27 19:51:07,605 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2024-11-27 19:51:07,605 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 19:51:07,605 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 19:51:07,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-27 19:51:07,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-27 19:51:07,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-27 19:51:07,605 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-27 19:51:07,605 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-27 19:51:07,605 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-27 19:51:07,605 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-27 19:51:07,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-27 19:51:07,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-27 19:51:07,965 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 19:51:07,968 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 19:51:17,567 INFO L? ?]: Removed 117 outVars from TransFormulas that were not future-live. [2024-11-27 19:51:17,567 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 19:51:17,583 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 19:51:17,584 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 19:51:17,584 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:51:17 BoogieIcfgContainer [2024-11-27 19:51:17,584 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 19:51:17,586 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 19:51:17,587 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 19:51:17,591 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 19:51:17,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 07:51:03" (1/3) ... [2024-11-27 19:51:17,592 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4efb7cd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:51:17, skipping insertion in model container [2024-11-27 19:51:17,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:51:07" (2/3) ... [2024-11-27 19:51:17,593 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4efb7cd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:51:17, skipping insertion in model container [2024-11-27 19:51:17,593 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:51:17" (3/3) ... [2024-11-27 19:51:17,594 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_reserve_harness_negated.i [2024-11-27 19:51:17,611 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 19:51:17,613 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_buf_reserve_harness_negated.i that has 13 procedures, 158 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-27 19:51:17,681 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 19:51:17,696 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;@3edc37e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 19:51:17,696 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 19:51:17,701 INFO L276 IsEmpty]: Start isEmpty. Operand has 158 states, 107 states have (on average 1.280373831775701) internal successors, (137), 107 states have internal predecessors, (137), 38 states have call successors, (38), 12 states have call predecessors, (38), 12 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-27 19:51:17,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-27 19:51:17,711 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:17,712 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-27 19:51:17,713 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:17,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:17,718 INFO L85 PathProgramCache]: Analyzing trace with hash 183362913, now seen corresponding path program 1 times [2024-11-27 19:51:17,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:17,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013554882] [2024-11-27 19:51:17,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:17,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:52:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:53:01,058 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 19:53:01,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:53:01,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013554882] [2024-11-27 19:53:01,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013554882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:53:01,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:53:01,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 19:53:01,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299988395] [2024-11-27 19:53:01,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:53:01,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 19:53:01,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:53:01,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 19:53:01,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 19:53:01,101 INFO L87 Difference]: Start difference. First operand has 158 states, 107 states have (on average 1.280373831775701) internal successors, (137), 107 states have internal predecessors, (137), 38 states have call successors, (38), 12 states have call predecessors, (38), 12 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-27 19:53:01,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:53:01,175 INFO L93 Difference]: Finished difference Result 306 states and 432 transitions. [2024-11-27 19:53:01,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 19:53:01,177 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 53 [2024-11-27 19:53:01,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:53:01,188 INFO L225 Difference]: With dead ends: 306 [2024-11-27 19:53:01,188 INFO L226 Difference]: Without dead ends: 151 [2024-11-27 19:53:01,194 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 19:53:01,197 INFO L435 NwaCegarLoop]: 207 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, 207 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:53:01,198 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:53:01,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-27 19:53:01,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2024-11-27 19:53:01,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 100 states have (on average 1.23) internal successors, (123), 101 states have internal predecessors, (123), 38 states have call successors, (38), 12 states have call predecessors, (38), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-27 19:53:01,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 198 transitions. [2024-11-27 19:53:01,277 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 198 transitions. Word has length 53 [2024-11-27 19:53:01,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:53:01,279 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 198 transitions. [2024-11-27 19:53:01,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-27 19:53:01,279 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 198 transitions. [2024-11-27 19:53:01,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-27 19:53:01,281 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:53:01,282 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-27 19:53:01,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 19:53:01,284 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:53:01,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:53:01,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1355775101, now seen corresponding path program 1 times [2024-11-27 19:53:01,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:53:01,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289320473] [2024-11-27 19:53:01,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:53:01,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:49,674 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 19:54:49,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:49,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289320473] [2024-11-27 19:54:49,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289320473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:54:49,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:54:49,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:54:49,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811339801] [2024-11-27 19:54:49,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:49,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:54:49,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:49,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:54:49,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:54:49,683 INFO L87 Difference]: Start difference. First operand 151 states and 198 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-27 19:54:50,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:50,199 INFO L93 Difference]: Finished difference Result 289 states and 383 transitions. [2024-11-27 19:54:50,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:54:50,201 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 55 [2024-11-27 19:54:50,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:50,205 INFO L225 Difference]: With dead ends: 289 [2024-11-27 19:54:50,205 INFO L226 Difference]: Without dead ends: 154 [2024-11-27 19:54:50,208 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:54:50,209 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 18 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:50,209 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 513 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 19:54:50,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-27 19:54:50,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2024-11-27 19:54:50,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 102 states have (on average 1.2254901960784315) internal successors, (125), 104 states have internal predecessors, (125), 38 states have call successors, (38), 12 states have call predecessors, (38), 13 states have return successors, (41), 37 states have call predecessors, (41), 37 states have call successors, (41) [2024-11-27 19:54:50,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 204 transitions. [2024-11-27 19:54:50,235 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 204 transitions. Word has length 55 [2024-11-27 19:54:50,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:50,235 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 204 transitions. [2024-11-27 19:54:50,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-27 19:54:50,236 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 204 transitions. [2024-11-27 19:54:50,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-27 19:54:50,239 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:50,240 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-27 19:54:50,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 19:54:50,240 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:50,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:50,240 INFO L85 PathProgramCache]: Analyzing trace with hash -2079818570, now seen corresponding path program 1 times [2024-11-27 19:54:50,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:50,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175432836] [2024-11-27 19:54:50,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:50,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:56:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:56:40,156 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 19:56:40,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:56:40,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175432836] [2024-11-27 19:56:40,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175432836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:56:40,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:56:40,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:56:40,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303012119] [2024-11-27 19:56:40,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:56:40,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:56:40,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:56:40,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:56:40,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:56:40,159 INFO L87 Difference]: Start difference. First operand 154 states and 204 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-27 19:56:40,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:56:40,312 INFO L93 Difference]: Finished difference Result 295 states and 398 transitions. [2024-11-27 19:56:40,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:56:40,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 61 [2024-11-27 19:56:40,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:56:40,315 INFO L225 Difference]: With dead ends: 295 [2024-11-27 19:56:40,315 INFO L226 Difference]: Without dead ends: 157 [2024-11-27 19:56:40,317 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 [2024-11-27 19:56:40,318 INFO L435 NwaCegarLoop]: 195 mSDtfsCounter, 1 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:56:40,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 579 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:56:40,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-27 19:56:40,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2024-11-27 19:56:40,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 104 states have (on average 1.2211538461538463) internal successors, (127), 106 states have internal predecessors, (127), 38 states have call successors, (38), 12 states have call predecessors, (38), 13 states have return successors, (41), 37 states have call predecessors, (41), 37 states have call successors, (41) [2024-11-27 19:56:40,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 206 transitions. [2024-11-27 19:56:40,336 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 206 transitions. Word has length 61 [2024-11-27 19:56:40,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:56:40,336 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 206 transitions. [2024-11-27 19:56:40,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-27 19:56:40,337 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 206 transitions. [2024-11-27 19:56:40,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-27 19:56:40,342 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:56:40,342 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-27 19:56:40,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 19:56:40,342 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:56:40,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:56:40,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1820781940, now seen corresponding path program 1 times [2024-11-27 19:56:40,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:56:40,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217923773] [2024-11-27 19:56:40,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:56:40,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:58:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:58:27,159 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 19:58:27,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:58:27,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217923773] [2024-11-27 19:58:27,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217923773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:58:27,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:58:27,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:58:27,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242544582] [2024-11-27 19:58:27,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:58:27,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:58:27,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:58:27,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:58:27,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:58:27,164 INFO L87 Difference]: Start difference. First operand 156 states and 206 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-27 19:58:27,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:58:27,347 INFO L93 Difference]: Finished difference Result 298 states and 401 transitions. [2024-11-27 19:58:27,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:58:27,348 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 61 [2024-11-27 19:58:27,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:58:27,350 INFO L225 Difference]: With dead ends: 298 [2024-11-27 19:58:27,350 INFO L226 Difference]: Without dead ends: 158 [2024-11-27 19:58:27,351 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 [2024-11-27 19:58:27,352 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 0 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:58:27,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 580 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:58:27,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-27 19:58:27,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2024-11-27 19:58:27,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 106 states have (on average 1.2169811320754718) internal successors, (129), 108 states have internal predecessors, (129), 38 states have call successors, (38), 12 states have call predecessors, (38), 13 states have return successors, (41), 37 states have call predecessors, (41), 37 states have call successors, (41) [2024-11-27 19:58:27,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 208 transitions. [2024-11-27 19:58:27,388 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 208 transitions. Word has length 61 [2024-11-27 19:58:27,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:58:27,389 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 208 transitions. [2024-11-27 19:58:27,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-27 19:58:27,389 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 208 transitions. [2024-11-27 19:58:27,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-27 19:58:27,395 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:58:27,395 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-27 19:58:27,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 19:58:27,396 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:58:27,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:58:27,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1050459272, now seen corresponding path program 1 times [2024-11-27 19:58:27,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:58:27,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818800454] [2024-11-27 19:58:27,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:58:27,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:00:08,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:00:09,916 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 20:00:09,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:00:09,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818800454] [2024-11-27 20:00:09,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818800454] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:00:09,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:00:09,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:00:09,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130798193] [2024-11-27 20:00:09,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:00:09,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:00:09,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:00:09,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:00:09,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:00:09,919 INFO L87 Difference]: Start difference. First operand 158 states and 208 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-27 20:00:10,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:00:10,092 INFO L93 Difference]: Finished difference Result 224 states and 286 transitions. [2024-11-27 20:00:10,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:00:10,093 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 61 [2024-11-27 20:00:10,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:00:10,095 INFO L225 Difference]: With dead ends: 224 [2024-11-27 20:00:10,095 INFO L226 Difference]: Without dead ends: 162 [2024-11-27 20:00:10,096 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:00:10,097 INFO L435 NwaCegarLoop]: 195 mSDtfsCounter, 0 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:00:10,097 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 966 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:00:10,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-27 20:00:10,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2024-11-27 20:00:10,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 109 states have (on average 1.2110091743119267) internal successors, (132), 111 states have internal predecessors, (132), 38 states have call successors, (38), 12 states have call predecessors, (38), 14 states have return successors, (42), 38 states have call predecessors, (42), 37 states have call successors, (42) [2024-11-27 20:00:10,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 212 transitions. [2024-11-27 20:00:10,111 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 212 transitions. Word has length 61 [2024-11-27 20:00:10,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:00:10,112 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 212 transitions. [2024-11-27 20:00:10,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-27 20:00:10,112 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 212 transitions. [2024-11-27 20:00:10,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-27 20:00:10,113 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:00:10,114 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-27 20:00:10,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:00:10,114 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:00:10,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:00:10,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1241972731, now seen corresponding path program 1 times [2024-11-27 20:00:10,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:00:10,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674975684] [2024-11-27 20:00:10,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:00:10,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:01:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:53,789 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-27 20:01:53,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:01:53,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674975684] [2024-11-27 20:01:53,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674975684] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:01:53,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132240339] [2024-11-27 20:01:53,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:53,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:53,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82021eb-82fe-4bb1-bb64-b82c95f9ded9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:01:53,793 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82021eb-82fe-4bb1-bb64-b82c95f9ded9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:01:53,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82021eb-82fe-4bb1-bb64-b82c95f9ded9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:03:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:03:43,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 7571 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 20:03:43,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:03:44,658 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-27 20:03:44,658 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:03:44,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132240339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:03:44,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:03:44,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-27 20:03:44,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387436862] [2024-11-27 20:03:44,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:03:44,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:03:44,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:03:44,662 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:03:44,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:03:44,663 INFO L87 Difference]: Start difference. First operand 162 states and 212 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-27 20:03:46,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:03:46,727 INFO L93 Difference]: Finished difference Result 293 states and 383 transitions. [2024-11-27 20:03:46,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:03:46,728 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 68 [2024-11-27 20:03:46,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:03:46,730 INFO L225 Difference]: With dead ends: 293 [2024-11-27 20:03:46,730 INFO L226 Difference]: Without dead ends: 159 [2024-11-27 20:03:46,731 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-11-27 20:03:46,732 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 241 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:03:46,732 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 661 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-27 20:03:46,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-27 20:03:46,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2024-11-27 20:03:46,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 107 states have (on average 1.205607476635514) internal successors, (129), 108 states have internal predecessors, (129), 38 states have call successors, (38), 12 states have call predecessors, (38), 13 states have return successors, (38), 38 states have call predecessors, (38), 37 states have call successors, (38) [2024-11-27 20:03:46,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 205 transitions. [2024-11-27 20:03:46,750 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 205 transitions. Word has length 68 [2024-11-27 20:03:46,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:03:46,750 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 205 transitions. [2024-11-27 20:03:46,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-27 20:03:46,751 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 205 transitions. [2024-11-27 20:03:46,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-27 20:03:46,752 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:03:46,752 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-27 20:03:46,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82021eb-82fe-4bb1-bb64-b82c95f9ded9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:03:46,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82021eb-82fe-4bb1-bb64-b82c95f9ded9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-27 20:03:46,953 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:03:46,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:03:46,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1695518550, now seen corresponding path program 1 times [2024-11-27 20:03:46,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:03:46,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863935291] [2024-11-27 20:03:46,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:03:46,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:05:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:53,872 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-27 20:05:53,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:05:53,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863935291] [2024-11-27 20:05:53,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863935291] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:05:53,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248384955] [2024-11-27 20:05:53,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:53,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:05:53,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82021eb-82fe-4bb1-bb64-b82c95f9ded9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:05:53,875 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82021eb-82fe-4bb1-bb64-b82c95f9ded9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:05:53,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82021eb-82fe-4bb1-bb64-b82c95f9ded9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process