./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_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_e8cd5ab2-6ce6-450e-b81e-aeec08ac7a6a/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8cd5ab2-6ce6-450e-b81e-aeec08ac7a6a/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8cd5ab2-6ce6-450e-b81e-aeec08ac7a6a/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8cd5ab2-6ce6-450e-b81e-aeec08ac7a6a/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8cd5ab2-6ce6-450e-b81e-aeec08ac7a6a/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8cd5ab2-6ce6-450e-b81e-aeec08ac7a6a/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d8feb785efb60d35f9204dc33a12e80ea59efcec5de2b7c2ff320ef29197b0bd --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 15:50:38,275 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 15:50:38,338 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8cd5ab2-6ce6-450e-b81e-aeec08ac7a6a/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-12-02 15:50:38,343 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 15:50:38,344 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 15:50:38,366 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 15:50:38,367 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 15:50:38,367 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 15:50:38,367 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 15:50:38,367 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 15:50:38,367 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 15:50:38,367 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 15:50:38,368 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 15:50:38,368 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 15:50:38,368 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 15:50:38,368 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 15:50:38,368 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 15:50:38,368 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 15:50:38,368 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 15:50:38,368 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 15:50:38,369 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 15:50:38,369 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 15:50:38,369 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 15:50:38,369 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 15:50:38,369 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 15:50:38,369 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 15:50:38,369 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:50:38,369 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:50:38,369 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:50:38,369 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:50:38,370 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 15:50:38,370 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:50:38,370 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:50:38,370 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:50:38,370 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:50:38,370 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 15:50:38,370 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 15:50:38,370 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 15:50:38,370 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 15:50:38,370 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 15:50:38,370 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 15:50:38,370 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 15:50:38,371 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 15:50:38,371 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 15:50:38,371 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 15:50:38,371 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_e8cd5ab2-6ce6-450e-b81e-aeec08ac7a6a/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8feb785efb60d35f9204dc33a12e80ea59efcec5de2b7c2ff320ef29197b0bd [2024-12-02 15:50:38,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 15:50:38,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 15:50:38,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 15:50:38,613 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 15:50:38,614 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 15:50:38,615 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8cd5ab2-6ce6-450e-b81e-aeec08ac7a6a/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i [2024-12-02 15:50:41,247 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8cd5ab2-6ce6-450e-b81e-aeec08ac7a6a/bin/uautomizer-verify-84ZbGMXZE1/data/a52e0b27c/6f3ca6f6dae24701819c469abb56508e/FLAG5443ba4d1 [2024-12-02 15:50:41,652 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 15:50:41,653 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8cd5ab2-6ce6-450e-b81e-aeec08ac7a6a/sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i [2024-12-02 15:50:41,684 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8cd5ab2-6ce6-450e-b81e-aeec08ac7a6a/bin/uautomizer-verify-84ZbGMXZE1/data/a52e0b27c/6f3ca6f6dae24701819c469abb56508e/FLAG5443ba4d1 [2024-12-02 15:50:41,698 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8cd5ab2-6ce6-450e-b81e-aeec08ac7a6a/bin/uautomizer-verify-84ZbGMXZE1/data/a52e0b27c/6f3ca6f6dae24701819c469abb56508e [2024-12-02 15:50:41,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 15:50:41,702 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 15:50:41,703 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 15:50:41,703 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 15:50:41,707 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 15:50:41,708 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:50:41" (1/1) ... [2024-12-02 15:50:41,709 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2caf406b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:41, skipping insertion in model container [2024-12-02 15:50:41,709 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:50:41" (1/1) ... [2024-12-02 15:50:41,792 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 15:50:42,011 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_e8cd5ab2-6ce6-450e-b81e-aeec08ac7a6a/sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i[4499,4512] [2024-12-02 15:50:42,016 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_e8cd5ab2-6ce6-450e-b81e-aeec08ac7a6a/sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i[4559,4572] [2024-12-02 15:50:42,785 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:42,786 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:42,786 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:42,787 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:42,788 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:42,801 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:42,801 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:42,803 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:42,803 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:43,473 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:43,473 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:43,534 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:50:43,577 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 15:50:43,588 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_e8cd5ab2-6ce6-450e-b81e-aeec08ac7a6a/sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i[4499,4512] [2024-12-02 15:50:43,589 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_e8cd5ab2-6ce6-450e-b81e-aeec08ac7a6a/sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i[4559,4572] [2024-12-02 15:50:43,621 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:43,622 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:43,622 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:43,622 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:43,623 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:43,628 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:43,628 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:43,629 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:43,629 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:43,715 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8269] [2024-12-02 15:50:43,717 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:43,717 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:43,726 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8755-8766] [2024-12-02 15:50:43,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:50:43,910 INFO L204 MainTranslator]: Completed translation [2024-12-02 15:50:43,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:43 WrapperNode [2024-12-02 15:50:43,911 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 15:50:43,911 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 15:50:43,911 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 15:50:43,912 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 15:50:43,917 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:43" (1/1) ... [2024-12-02 15:50:43,972 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:43" (1/1) ... [2024-12-02 15:50:44,024 INFO L138 Inliner]: procedures = 679, calls = 2728, calls flagged for inlining = 62, calls inlined = 9, statements flattened = 815 [2024-12-02 15:50:44,024 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 15:50:44,025 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 15:50:44,025 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 15:50:44,025 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 15:50:44,035 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:43" (1/1) ... [2024-12-02 15:50:44,035 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:43" (1/1) ... [2024-12-02 15:50:44,040 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:43" (1/1) ... [2024-12-02 15:50:44,091 INFO L175 MemorySlicer]: Split 518 memory accesses to 6 slices as follows [2, 257, 238, 2, 5, 14]. 50 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 0, 6, 0, 5, 0]. The 494 writes are split as follows [0, 257, 232, 1, 0, 4]. [2024-12-02 15:50:44,092 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:43" (1/1) ... [2024-12-02 15:50:44,092 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:43" (1/1) ... [2024-12-02 15:50:44,118 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:43" (1/1) ... [2024-12-02 15:50:44,119 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:43" (1/1) ... [2024-12-02 15:50:44,124 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:43" (1/1) ... [2024-12-02 15:50:44,132 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:43" (1/1) ... [2024-12-02 15:50:44,137 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:43" (1/1) ... [2024-12-02 15:50:44,147 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 15:50:44,147 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 15:50:44,147 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 15:50:44,147 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 15:50:44,148 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:43" (1/1) ... [2024-12-02 15:50:44,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:50:44,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8cd5ab2-6ce6-450e-b81e-aeec08ac7a6a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:50:44,172 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8cd5ab2-6ce6-450e-b81e-aeec08ac7a6a/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 15:50:44,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8cd5ab2-6ce6-450e-b81e-aeec08ac7a6a/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 15:50:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2024-12-02 15:50:44,203 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2024-12-02 15:50:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 15:50:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-12-02 15:50:44,203 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-12-02 15:50:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#0 [2024-12-02 15:50:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#1 [2024-12-02 15:50:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#2 [2024-12-02 15:50:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#3 [2024-12-02 15:50:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#4 [2024-12-02 15:50:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#5 [2024-12-02 15:50:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2024-12-02 15:50:44,204 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2024-12-02 15:50:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#0 [2024-12-02 15:50:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#1 [2024-12-02 15:50:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#2 [2024-12-02 15:50:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#3 [2024-12-02 15:50:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#4 [2024-12-02 15:50:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#5 [2024-12-02 15:50:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-12-02 15:50:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-12-02 15:50:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-12-02 15:50:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-12-02 15:50:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-12-02 15:50:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-12-02 15:50:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 15:50:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 15:50:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 15:50:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 15:50:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 15:50:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-12-02 15:50:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#0 [2024-12-02 15:50:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#1 [2024-12-02 15:50:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#2 [2024-12-02 15:50:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#3 [2024-12-02 15:50:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#4 [2024-12-02 15:50:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#5 [2024-12-02 15:50:44,205 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#0 [2024-12-02 15:50:44,205 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#1 [2024-12-02 15:50:44,205 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#2 [2024-12-02 15:50:44,205 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#3 [2024-12-02 15:50:44,205 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#4 [2024-12-02 15:50:44,205 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#5 [2024-12-02 15:50:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-12-02 15:50:44,206 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-12-02 15:50:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-12-02 15:50:44,206 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-12-02 15:50:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 15:50:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 15:50:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 15:50:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 15:50:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 15:50:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-12-02 15:50:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-12-02 15:50:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-12-02 15:50:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 15:50:44,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 15:50:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-12-02 15:50:44,206 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-12-02 15:50:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#0 [2024-12-02 15:50:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#1 [2024-12-02 15:50:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#2 [2024-12-02 15:50:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#3 [2024-12-02 15:50:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#4 [2024-12-02 15:50:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#5 [2024-12-02 15:50:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-12-02 15:50:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-12-02 15:50:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-12-02 15:50:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-12-02 15:50:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-12-02 15:50:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-12-02 15:50:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2024-12-02 15:50:44,207 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2024-12-02 15:50:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 15:50:44,207 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 15:50:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2024-12-02 15:50:44,207 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2024-12-02 15:50:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 15:50:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2024-12-02 15:50:44,208 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2024-12-02 15:50:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-12-02 15:50:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-12-02 15:50:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-12-02 15:50:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-12-02 15:50:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-12-02 15:50:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-12-02 15:50:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_array [2024-12-02 15:50:44,208 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_array [2024-12-02 15:50:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-12-02 15:50:44,208 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-12-02 15:50:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2024-12-02 15:50:44,208 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2024-12-02 15:50:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-12-02 15:50:44,208 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-12-02 15:50:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 15:50:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 15:50:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 15:50:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 15:50:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 15:50:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-12-02 15:50:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#0 [2024-12-02 15:50:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#1 [2024-12-02 15:50:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#2 [2024-12-02 15:50:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#3 [2024-12-02 15:50:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#4 [2024-12-02 15:50:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#5 [2024-12-02 15:50:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 15:50:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 15:50:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 15:50:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 15:50:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 15:50:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 15:50:44,479 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 15:50:44,480 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 15:50:44,601 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-12-02 15:50:44,640 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume false; [2024-12-02 15:50:44,641 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !false; [2024-12-02 15:50:52,474 INFO L? ?]: Removed 174 outVars from TransFormulas that were not future-live. [2024-12-02 15:50:52,474 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 15:50:52,486 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 15:50:52,486 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 15:50:52,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:50:52 BoogieIcfgContainer [2024-12-02 15:50:52,486 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 15:50:52,488 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 15:50:52,488 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 15:50:52,493 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 15:50:52,493 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:50:41" (1/3) ... [2024-12-02 15:50:52,493 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e7b46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:50:52, skipping insertion in model container [2024-12-02 15:50:52,493 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:43" (2/3) ... [2024-12-02 15:50:52,494 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e7b46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:50:52, skipping insertion in model container [2024-12-02 15:50:52,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:50:52" (3/3) ... [2024-12-02 15:50:52,495 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_string_new_from_c_str_harness.i [2024-12-02 15:50:52,509 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 15:50:52,511 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_string_new_from_c_str_harness.i that has 21 procedures, 162 locations, 1 initial locations, 13 loop locations, and 1 error locations. [2024-12-02 15:50:52,563 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:50:52,574 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;@f92821f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:50:52,574 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 15:50:52,578 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 87 states have (on average 1.160919540229885) internal successors, (101), 87 states have internal predecessors, (101), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-12-02 15:50:52,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-12-02 15:50:52,586 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:50:52,587 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:50:52,587 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:50:52,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:50:52,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1565145841, now seen corresponding path program 1 times [2024-12-02 15:50:52,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:50:52,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67902151] [2024-12-02 15:50:52,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:50:52,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:52:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:52:15,492 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 15:52:15,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:52:15,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67902151] [2024-12-02 15:52:15,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67902151] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:52:15,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879621527] [2024-12-02 15:52:15,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:52:15,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:52:15,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8cd5ab2-6ce6-450e-b81e-aeec08ac7a6a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:52:15,498 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8cd5ab2-6ce6-450e-b81e-aeec08ac7a6a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:52:15,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8cd5ab2-6ce6-450e-b81e-aeec08ac7a6a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 15:53:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:41,339 INFO L256 TraceCheckSpWp]: Trace formula consists of 7630 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 15:53:41,351 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:53:41,364 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 15:53:41,364 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:53:41,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879621527] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:53:41,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:53:41,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 15:53:41,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475007807] [2024-12-02 15:53:41,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:53:41,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 15:53:41,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:53:41,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 15:53:41,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 15:53:41,387 INFO L87 Difference]: Start difference. First operand has 137 states, 87 states have (on average 1.160919540229885) internal successors, (101), 87 states have internal predecessors, (101), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 15:53:41,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:53:41,419 INFO L93 Difference]: Finished difference Result 268 states and 351 transitions. [2024-12-02 15:53:41,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 15:53:41,421 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 75 [2024-12-02 15:53:41,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:53:41,428 INFO L225 Difference]: With dead ends: 268 [2024-12-02 15:53:41,428 INFO L226 Difference]: Without dead ends: 131 [2024-12-02 15:53:41,431 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 15:53:41,434 INFO L435 NwaCegarLoop]: 165 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, 165 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:53:41,434 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:53:41,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-12-02 15:53:41,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2024-12-02 15:53:41,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 81 states have (on average 1.1481481481481481) internal successors, (93), 82 states have internal predecessors, (93), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-12-02 15:53:41,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 160 transitions. [2024-12-02 15:53:41,473 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 160 transitions. Word has length 75 [2024-12-02 15:53:41,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:53:41,474 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 160 transitions. [2024-12-02 15:53:41,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 15:53:41,474 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 160 transitions. [2024-12-02 15:53:41,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-12-02 15:53:41,476 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:53:41,476 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:53:41,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8cd5ab2-6ce6-450e-b81e-aeec08ac7a6a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 15:53:41,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8cd5ab2-6ce6-450e-b81e-aeec08ac7a6a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:53:41,677 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:53:41,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:53:41,677 INFO L85 PathProgramCache]: Analyzing trace with hash 46619501, now seen corresponding path program 1 times [2024-12-02 15:53:41,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:53:41,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972887714] [2024-12-02 15:53:41,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:53:41,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:55:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:55:08,502 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-12-02 15:55:08,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:55:08,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972887714] [2024-12-02 15:55:08,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972887714] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:55:08,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:55:08,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 15:55:08,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834909325] [2024-12-02 15:55:08,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:55:08,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:55:08,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:55:08,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:55:08,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:55:08,505 INFO L87 Difference]: Start difference. First operand 131 states and 160 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2024-12-02 15:55:08,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:55:08,636 INFO L93 Difference]: Finished difference Result 180 states and 218 transitions. [2024-12-02 15:55:08,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:55:08,637 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), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 75 [2024-12-02 15:55:08,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:55:08,640 INFO L225 Difference]: With dead ends: 180 [2024-12-02 15:55:08,640 INFO L226 Difference]: Without dead ends: 136 [2024-12-02 15:55:08,640 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:55:08,641 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 0 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:55:08,642 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 624 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:55:08,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-12-02 15:55:08,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-12-02 15:55:08,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 85 states have (on average 1.1411764705882352) internal successors, (97), 86 states have internal predecessors, (97), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (34), 34 states have call predecessors, (34), 33 states have call successors, (34) [2024-12-02 15:55:08,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 165 transitions. [2024-12-02 15:55:08,659 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 165 transitions. Word has length 75 [2024-12-02 15:55:08,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:55:08,659 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 165 transitions. [2024-12-02 15:55:08,659 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), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2024-12-02 15:55:08,660 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 165 transitions. [2024-12-02 15:55:08,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-12-02 15:55:08,661 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:55:08,661 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:55:08,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 15:55:08,662 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:55:08,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:55:08,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1796237082, now seen corresponding path program 1 times [2024-12-02 15:55:08,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:55:08,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273876755] [2024-12-02 15:55:08,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:55:08,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:56:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:56:37,320 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-12-02 15:56:37,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:56:37,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273876755] [2024-12-02 15:56:37,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273876755] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:56:37,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:56:37,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 15:56:37,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659029909] [2024-12-02 15:56:37,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:56:37,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:56:37,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:56:37,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:56:37,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:56:37,322 INFO L87 Difference]: Start difference. First operand 136 states and 165 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-12-02 15:56:37,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:56:37,494 INFO L93 Difference]: Finished difference Result 180 states and 217 transitions. [2024-12-02 15:56:37,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 15:56:37,495 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 81 [2024-12-02 15:56:37,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:56:37,497 INFO L225 Difference]: With dead ends: 180 [2024-12-02 15:56:37,497 INFO L226 Difference]: Without dead ends: 141 [2024-12-02 15:56:37,498 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 [2024-12-02 15:56:37,499 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 0 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:56:37,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 776 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:56:37,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-12-02 15:56:37,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2024-12-02 15:56:37,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 89 states have (on average 1.1348314606741574) internal successors, (101), 90 states have internal predecessors, (101), 34 states have call successors, (34), 15 states have call predecessors, (34), 17 states have return successors, (35), 35 states have call predecessors, (35), 33 states have call successors, (35) [2024-12-02 15:56:37,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 170 transitions. [2024-12-02 15:56:37,512 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 170 transitions. Word has length 81 [2024-12-02 15:56:37,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:56:37,513 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 170 transitions. [2024-12-02 15:56:37,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-12-02 15:56:37,513 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 170 transitions. [2024-12-02 15:56:37,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-12-02 15:56:37,514 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:56:37,514 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:56:37,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 15:56:37,515 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:56:37,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:56:37,515 INFO L85 PathProgramCache]: Analyzing trace with hash 2102665871, now seen corresponding path program 1 times [2024-12-02 15:56:37,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:56:37,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045454708] [2024-12-02 15:56:37,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:56:37,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:58:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:58:09,316 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-12-02 15:58:09,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:58:09,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045454708] [2024-12-02 15:58:09,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045454708] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:58:09,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:58:09,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 15:58:09,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362399658] [2024-12-02 15:58:09,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:58:09,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 15:58:09,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:58:09,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 15:58:09,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-12-02 15:58:09,318 INFO L87 Difference]: Start difference. First operand 141 states and 170 transitions. Second operand has 11 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 15:58:10,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:58:10,264 INFO L93 Difference]: Finished difference Result 147 states and 175 transitions. [2024-12-02 15:58:10,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 15:58:10,265 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 83 [2024-12-02 15:58:10,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:58:10,266 INFO L225 Difference]: With dead ends: 147 [2024-12-02 15:58:10,266 INFO L226 Difference]: Without dead ends: 132 [2024-12-02 15:58:10,267 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-12-02 15:58:10,267 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 13 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:58:10,268 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 1470 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 15:58:10,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-12-02 15:58:10,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 127. [2024-12-02 15:58:10,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 78 states have (on average 1.1153846153846154) internal successors, (87), 79 states have internal predecessors, (87), 33 states have call successors, (33), 15 states have call predecessors, (33), 15 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-12-02 15:58:10,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 152 transitions. [2024-12-02 15:58:10,281 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 152 transitions. Word has length 83 [2024-12-02 15:58:10,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:58:10,281 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 152 transitions. [2024-12-02 15:58:10,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 15:58:10,282 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 152 transitions. [2024-12-02 15:58:10,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-12-02 15:58:10,284 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:58:10,284 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:58:10,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 15:58:10,284 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:58:10,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:58:10,285 INFO L85 PathProgramCache]: Analyzing trace with hash -396383014, now seen corresponding path program 1 times [2024-12-02 15:58:10,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:58:10,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81259497] [2024-12-02 15:58:10,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:58:10,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:59:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:59:35,565 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-12-02 15:59:35,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:59:35,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81259497] [2024-12-02 15:59:35,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81259497] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:59:35,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:59:35,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 15:59:35,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970506263] [2024-12-02 15:59:35,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:59:35,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:59:35,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:59:35,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:59:35,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:59:35,567 INFO L87 Difference]: Start difference. First operand 127 states and 152 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 15:59:35,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:59:35,733 INFO L93 Difference]: Finished difference Result 188 states and 224 transitions. [2024-12-02 15:59:35,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 15:59:35,733 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 124 [2024-12-02 15:59:35,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:59:35,735 INFO L225 Difference]: With dead ends: 188 [2024-12-02 15:59:35,735 INFO L226 Difference]: Without dead ends: 133 [2024-12-02 15:59:35,736 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 [2024-12-02 15:59:35,736 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 2 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:59:35,736 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 735 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:59:35,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-12-02 15:59:35,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 132. [2024-12-02 15:59:35,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 82 states have (on average 1.1097560975609757) internal successors, (91), 83 states have internal predecessors, (91), 33 states have call successors, (33), 15 states have call predecessors, (33), 16 states have return successors, (33), 33 states have call predecessors, (33), 32 states have call successors, (33) [2024-12-02 15:59:35,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 157 transitions. [2024-12-02 15:59:35,746 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 157 transitions. Word has length 124 [2024-12-02 15:59:35,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:59:35,747 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 157 transitions. [2024-12-02 15:59:35,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 15:59:35,747 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 157 transitions. [2024-12-02 15:59:35,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-12-02 15:59:35,749 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:59:35,749 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:59:35,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 15:59:35,749 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:59:35,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:59:35,750 INFO L85 PathProgramCache]: Analyzing trace with hash -870137360, now seen corresponding path program 1 times [2024-12-02 15:59:35,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:59:35,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679526982] [2024-12-02 15:59:35,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:59:35,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 16:01:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 16:01:08,682 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-12-02 16:01:08,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 16:01:08,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679526982] [2024-12-02 16:01:08,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679526982] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 16:01:08,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 16:01:08,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 16:01:08,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121480423] [2024-12-02 16:01:08,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 16:01:08,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 16:01:08,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 16:01:08,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 16:01:08,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 16:01:08,686 INFO L87 Difference]: Start difference. First operand 132 states and 157 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 5 states have call predecessors, (21), 3 states have call successors, (21) [2024-12-02 16:01:09,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 16:01:09,011 INFO L93 Difference]: Finished difference Result 187 states and 222 transitions. [2024-12-02 16:01:09,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 16:01:09,011 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 5 states have call predecessors, (21), 3 states have call successors, (21) Word has length 130 [2024-12-02 16:01:09,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 16:01:09,013 INFO L225 Difference]: With dead ends: 187 [2024-12-02 16:01:09,013 INFO L226 Difference]: Without dead ends: 125 [2024-12-02 16:01:09,013 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 16:01:09,014 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 0 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 16:01:09,015 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1168 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 16:01:09,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-12-02 16:01:09,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2024-12-02 16:01:09,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 77 states have (on average 1.0909090909090908) internal successors, (84), 78 states have internal predecessors, (84), 32 states have call successors, (32), 15 states have call predecessors, (32), 15 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-12-02 16:01:09,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 147 transitions. [2024-12-02 16:01:09,026 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 147 transitions. Word has length 130 [2024-12-02 16:01:09,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 16:01:09,026 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 147 transitions. [2024-12-02 16:01:09,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 5 states have call predecessors, (21), 3 states have call successors, (21) [2024-12-02 16:01:09,027 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 147 transitions. [2024-12-02 16:01:09,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-12-02 16:01:09,028 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 16:01:09,028 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 16:01:09,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 16:01:09,028 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 16:01:09,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 16:01:09,029 INFO L85 PathProgramCache]: Analyzing trace with hash 2135968482, now seen corresponding path program 1 times [2024-12-02 16:01:09,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 16:01:09,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781663480] [2024-12-02 16:01:09,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 16:01:09,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 16:02:42,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 16:02:47,307 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-12-02 16:02:47,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 16:02:47,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781663480] [2024-12-02 16:02:47,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781663480] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 16:02:47,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 16:02:47,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 16:02:47,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649986185] [2024-12-02 16:02:47,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 16:02:47,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 16:02:47,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 16:02:47,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 16:02:47,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-12-02 16:02:47,309 INFO L87 Difference]: Start difference. First operand 125 states and 147 transitions. Second operand has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 12 states have internal predecessors, (62), 3 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (21), 6 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 16:02:49,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 16:02:49,059 INFO L93 Difference]: Finished difference Result 175 states and 207 transitions. [2024-12-02 16:02:49,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 16:02:49,059 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 12 states have internal predecessors, (62), 3 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (21), 6 states have call predecessors, (21), 2 states have call successors, (21) Word has length 135 [2024-12-02 16:02:49,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 16:02:49,062 INFO L225 Difference]: With dead ends: 175 [2024-12-02 16:02:49,063 INFO L226 Difference]: Without dead ends: 133 [2024-12-02 16:02:49,063 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-12-02 16:02:49,064 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 11 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 16:02:49,064 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1717 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 16:02:49,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-12-02 16:02:49,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 130. [2024-12-02 16:02:49,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 81 states have (on average 1.0987654320987654) internal successors, (89), 83 states have internal predecessors, (89), 32 states have call successors, (32), 15 states have call predecessors, (32), 16 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2024-12-02 16:02:49,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 153 transitions. [2024-12-02 16:02:49,072 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 153 transitions. Word has length 135 [2024-12-02 16:02:49,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 16:02:49,072 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 153 transitions. [2024-12-02 16:02:49,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 12 states have internal predecessors, (62), 3 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (21), 6 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 16:02:49,073 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 153 transitions. [2024-12-02 16:02:49,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-12-02 16:02:49,074 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 16:02:49,074 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 16:02:49,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 16:02:49,075 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 16:02:49,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 16:02:49,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1349652188, now seen corresponding path program 1 times [2024-12-02 16:02:49,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 16:02:49,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532485785] [2024-12-02 16:02:49,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 16:02:49,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 16:04:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 16:05:02,226 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-12-02 16:05:02,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 16:05:02,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532485785] [2024-12-02 16:05:02,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532485785] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 16:05:02,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 16:05:02,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2024-12-02 16:05:02,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071605324] [2024-12-02 16:05:02,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 16:05:02,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-12-02 16:05:02,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 16:05:02,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-12-02 16:05:02,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1117, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 16:05:02,229 INFO L87 Difference]: Start difference. First operand 130 states and 153 transitions. Second operand has 35 states, 29 states have (on average 2.2758620689655173) internal successors, (66), 26 states have internal predecessors, (66), 9 states have call successors, (24), 3 states have call predecessors, (24), 9 states have return successors, (22), 11 states have call predecessors, (22), 8 states have call successors, (22)