./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3c7915a-6aa1-48ec-88e6-33b2cd6dbcbd/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3c7915a-6aa1-48ec-88e6-33b2cd6dbcbd/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_d3c7915a-6aa1-48ec-88e6-33b2cd6dbcbd/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3c7915a-6aa1-48ec-88e6-33b2cd6dbcbd/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3c7915a-6aa1-48ec-88e6-33b2cd6dbcbd/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_d3c7915a-6aa1-48ec-88e6-33b2cd6dbcbd/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 f794b74895d86811f31f266061230bbe472937829675777db1e7aa35770837b1 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 12:43:48,891 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 12:43:48,946 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3c7915a-6aa1-48ec-88e6-33b2cd6dbcbd/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-12-02 12:43:48,951 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 12:43:48,951 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 12:43:48,972 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 12:43:48,973 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 12:43:48,973 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 12:43:48,973 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 12:43:48,974 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 12:43:48,974 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 12:43:48,974 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 12:43:48,974 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 12:43:48,974 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 12:43:48,974 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 12:43:48,975 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 12:43:48,975 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 12:43:48,975 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 12:43:48,975 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 12:43:48,975 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 12:43:48,975 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 12:43:48,975 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 12:43:48,975 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 12:43:48,975 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 12:43:48,975 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 12:43:48,976 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 12:43:48,976 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:43:48,976 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:43:48,976 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:43:48,976 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:43:48,976 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 12:43:48,976 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:43:48,976 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:43:48,976 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:43:48,977 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:43:48,977 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 12:43:48,977 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 12:43:48,977 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 12:43:48,977 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 12:43:48,977 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 12:43:48,977 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 12:43:48,977 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 12:43:48,977 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 12:43:48,978 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 12:43:48,978 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 12:43:48,978 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_d3c7915a-6aa1-48ec-88e6-33b2cd6dbcbd/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 -> f794b74895d86811f31f266061230bbe472937829675777db1e7aa35770837b1 [2024-12-02 12:43:49,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 12:43:49,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 12:43:49,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 12:43:49,209 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 12:43:49,209 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 12:43:49,210 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3c7915a-6aa1-48ec-88e6-33b2cd6dbcbd/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness_negated.i [2024-12-02 12:43:51,989 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3c7915a-6aa1-48ec-88e6-33b2cd6dbcbd/bin/uautomizer-verify-84ZbGMXZE1/data/990f395ff/1b3e090da0724447af35b509fef9708f/FLAG600cc473d [2024-12-02 12:43:52,379 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 12:43:52,380 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3c7915a-6aa1-48ec-88e6-33b2cd6dbcbd/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness_negated.i [2024-12-02 12:43:52,408 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3c7915a-6aa1-48ec-88e6-33b2cd6dbcbd/bin/uautomizer-verify-84ZbGMXZE1/data/990f395ff/1b3e090da0724447af35b509fef9708f/FLAG600cc473d [2024-12-02 12:43:52,422 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3c7915a-6aa1-48ec-88e6-33b2cd6dbcbd/bin/uautomizer-verify-84ZbGMXZE1/data/990f395ff/1b3e090da0724447af35b509fef9708f [2024-12-02 12:43:52,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 12:43:52,426 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 12:43:52,427 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 12:43:52,427 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 12:43:52,431 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 12:43:52,432 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:43:52" (1/1) ... [2024-12-02 12:43:52,433 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d1e0f1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:52, skipping insertion in model container [2024-12-02 12:43:52,433 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:43:52" (1/1) ... [2024-12-02 12:43:52,505 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 12:43:52,735 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_d3c7915a-6aa1-48ec-88e6-33b2cd6dbcbd/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness_negated.i[4500,4513] [2024-12-02 12:43:52,742 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_d3c7915a-6aa1-48ec-88e6-33b2cd6dbcbd/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness_negated.i[4560,4573] [2024-12-02 12:43:53,583 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:43:53,583 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:43:53,584 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:43:53,584 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:43:53,585 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:43:53,597 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:43:53,598 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:43:53,600 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:43:53,601 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:43:54,326 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:43:54,327 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:43:54,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:43:54,452 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 12:43:54,465 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_d3c7915a-6aa1-48ec-88e6-33b2cd6dbcbd/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness_negated.i[4500,4513] [2024-12-02 12:43:54,465 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_d3c7915a-6aa1-48ec-88e6-33b2cd6dbcbd/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness_negated.i[4560,4573] [2024-12-02 12:43:54,505 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:43:54,506 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:43:54,506 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:43:54,507 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:43:54,507 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:43:54,514 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:43:54,515 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:43:54,516 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:43:54,516 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:43:54,641 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8237] [2024-12-02 12:43:54,643 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:43:54,643 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:43:54,659 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8723-8734] [2024-12-02 12:43:54,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:43:54,893 INFO L204 MainTranslator]: Completed translation [2024-12-02 12:43:54,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:54 WrapperNode [2024-12-02 12:43:54,894 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 12:43:54,895 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 12:43:54,895 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 12:43:54,895 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 12:43:54,899 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:54" (1/1) ... [2024-12-02 12:43:54,954 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:54" (1/1) ... [2024-12-02 12:43:55,007 INFO L138 Inliner]: procedures = 679, calls = 2733, calls flagged for inlining = 59, calls inlined = 9, statements flattened = 831 [2024-12-02 12:43:55,007 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 12:43:55,008 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 12:43:55,008 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 12:43:55,008 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 12:43:55,018 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:54" (1/1) ... [2024-12-02 12:43:55,018 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:54" (1/1) ... [2024-12-02 12:43:55,024 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:54" (1/1) ... [2024-12-02 12:43:55,090 INFO L175 MemorySlicer]: Split 525 memory accesses to 6 slices as follows [257, 2, 238, 21, 5, 2]. 49 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [0, 2, 6, 0, 5, 0]. The 497 writes are split as follows [257, 0, 232, 7, 0, 1]. [2024-12-02 12:43:55,090 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:54" (1/1) ... [2024-12-02 12:43:55,090 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:54" (1/1) ... [2024-12-02 12:43:55,119 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:54" (1/1) ... [2024-12-02 12:43:55,121 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:54" (1/1) ... [2024-12-02 12:43:55,125 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:54" (1/1) ... [2024-12-02 12:43:55,150 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:54" (1/1) ... [2024-12-02 12:43:55,154 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:54" (1/1) ... [2024-12-02 12:43:55,166 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 12:43:55,167 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 12:43:55,167 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 12:43:55,167 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 12:43:55,168 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:54" (1/1) ... [2024-12-02 12:43:55,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:43:55,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3c7915a-6aa1-48ec-88e6-33b2cd6dbcbd/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:43:55,200 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3c7915a-6aa1-48ec-88e6-33b2cd6dbcbd/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 12:43:55,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3c7915a-6aa1-48ec-88e6-33b2cd6dbcbd/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 12:43:55,230 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2024-12-02 12:43:55,230 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2024-12-02 12:43:55,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 12:43:55,230 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-12-02 12:43:55,231 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-12-02 12:43:55,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#0 [2024-12-02 12:43:55,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#1 [2024-12-02 12:43:55,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#2 [2024-12-02 12:43:55,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#3 [2024-12-02 12:43:55,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#4 [2024-12-02 12:43:55,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#5 [2024-12-02 12:43:55,231 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2024-12-02 12:43:55,231 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2024-12-02 12:43:55,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#0 [2024-12-02 12:43:55,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#1 [2024-12-02 12:43:55,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#2 [2024-12-02 12:43:55,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#3 [2024-12-02 12:43:55,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#4 [2024-12-02 12:43:55,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#5 [2024-12-02 12:43:55,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-12-02 12:43:55,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-12-02 12:43:55,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-12-02 12:43:55,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-12-02 12:43:55,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-12-02 12:43:55,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-12-02 12:43:55,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 12:43:55,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 12:43:55,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 12:43:55,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 12:43:55,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 12:43:55,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-12-02 12:43:55,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#0 [2024-12-02 12:43:55,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#1 [2024-12-02 12:43:55,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#2 [2024-12-02 12:43:55,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#3 [2024-12-02 12:43:55,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#4 [2024-12-02 12:43:55,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#5 [2024-12-02 12:43:55,233 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#0 [2024-12-02 12:43:55,233 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#1 [2024-12-02 12:43:55,233 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#2 [2024-12-02 12:43:55,233 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#3 [2024-12-02 12:43:55,233 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#4 [2024-12-02 12:43:55,233 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#5 [2024-12-02 12:43:55,233 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-12-02 12:43:55,233 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-12-02 12:43:55,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-12-02 12:43:55,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-12-02 12:43:55,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 12:43:55,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 12:43:55,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 12:43:55,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 12:43:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 12:43:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-12-02 12:43:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-12-02 12:43:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-12-02 12:43:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 12:43:55,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 12:43:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-12-02 12:43:55,234 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-12-02 12:43:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#0 [2024-12-02 12:43:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#1 [2024-12-02 12:43:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#2 [2024-12-02 12:43:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#3 [2024-12-02 12:43:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#4 [2024-12-02 12:43:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#5 [2024-12-02 12:43:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-12-02 12:43:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-12-02 12:43:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-12-02 12:43:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-12-02 12:43:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-12-02 12:43:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-12-02 12:43:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2024-12-02 12:43:55,235 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2024-12-02 12:43:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 12:43:55,235 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 12:43:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2024-12-02 12:43:55,235 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2024-12-02 12:43:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 12:43:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2024-12-02 12:43:55,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2024-12-02 12:43:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 12:43:55,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 12:43:55,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 12:43:55,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-12-02 12:43:55,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-12-02 12:43:55,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-12-02 12:43:55,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-12-02 12:43:55,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-12-02 12:43:55,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-12-02 12:43:55,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-12-02 12:43:55,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-12-02 12:43:55,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-12-02 12:43:55,236 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_array [2024-12-02 12:43:55,236 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_array [2024-12-02 12:43:55,236 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-12-02 12:43:55,236 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-12-02 12:43:55,236 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2024-12-02 12:43:55,237 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2024-12-02 12:43:55,237 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-12-02 12:43:55,237 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-12-02 12:43:55,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 12:43:55,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 12:43:55,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 12:43:55,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 12:43:55,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 12:43:55,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-12-02 12:43:55,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#0 [2024-12-02 12:43:55,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#1 [2024-12-02 12:43:55,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#2 [2024-12-02 12:43:55,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#3 [2024-12-02 12:43:55,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#4 [2024-12-02 12:43:55,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#5 [2024-12-02 12:43:55,238 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_string [2024-12-02 12:43:55,238 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_string [2024-12-02 12:43:55,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 12:43:55,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 12:43:55,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 12:43:55,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 12:43:55,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 12:43:55,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 12:43:55,532 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 12:43:55,534 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 12:43:56,224 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-12-02 12:43:56,256 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume false; [2024-12-02 12:43:56,256 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !false; [2024-12-02 12:44:03,751 INFO L? ?]: Removed 178 outVars from TransFormulas that were not future-live. [2024-12-02 12:44:03,751 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 12:44:03,763 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 12:44:03,763 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 12:44:03,764 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:44:03 BoogieIcfgContainer [2024-12-02 12:44:03,764 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 12:44:03,766 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 12:44:03,766 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 12:44:03,770 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 12:44:03,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:43:52" (1/3) ... [2024-12-02 12:44:03,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1004b751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:44:03, skipping insertion in model container [2024-12-02 12:44:03,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:54" (2/3) ... [2024-12-02 12:44:03,772 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1004b751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:44:03, skipping insertion in model container [2024-12-02 12:44:03,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:44:03" (3/3) ... [2024-12-02 12:44:03,773 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_string_new_from_string_harness_negated.i [2024-12-02 12:44:03,788 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 12:44:03,790 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_string_new_from_string_harness_negated.i that has 22 procedures, 178 locations, 1 initial locations, 13 loop locations, and 1 error locations. [2024-12-02 12:44:03,846 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:44:03,859 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;@4e17f753, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:44:03,859 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 12:44:03,863 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 97 states have (on average 1.175257731958763) internal successors, (114), 97 states have internal predecessors, (114), 39 states have call successors, (39), 16 states have call predecessors, (39), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-12-02 12:44:03,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-02 12:44:03,872 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:44:03,873 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:44:03,873 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:44:03,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:44:03,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1689756811, now seen corresponding path program 1 times [2024-12-02 12:44:03,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:44:03,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884799311] [2024-12-02 12:44:03,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:44:03,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:45:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:45:35,571 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 12:45:35,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:45:35,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884799311] [2024-12-02 12:45:35,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884799311] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:45:35,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398577974] [2024-12-02 12:45:35,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:45:35,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:45:35,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3c7915a-6aa1-48ec-88e6-33b2cd6dbcbd/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:45:35,575 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3c7915a-6aa1-48ec-88e6-33b2cd6dbcbd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:45:35,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3c7915a-6aa1-48ec-88e6-33b2cd6dbcbd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 12:47:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:47:07,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 7730 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 12:47:07,432 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:47:07,444 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 12:47:07,444 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:47:07,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398577974] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:47:07,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:47:07,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 12:47:07,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924370179] [2024-12-02 12:47:07,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:47:07,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 12:47:07,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:47:07,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 12:47:07,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 12:47:07,466 INFO L87 Difference]: Start difference. First operand has 153 states, 97 states have (on average 1.175257731958763) internal successors, (114), 97 states have internal predecessors, (114), 39 states have call successors, (39), 16 states have call predecessors, (39), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 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 12:47:07,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:47:07,498 INFO L93 Difference]: Finished difference Result 300 states and 398 transitions. [2024-12-02 12:47:07,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 12:47:07,500 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 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 80 [2024-12-02 12:47:07,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:47:07,506 INFO L225 Difference]: With dead ends: 300 [2024-12-02 12:47:07,506 INFO L226 Difference]: Without dead ends: 147 [2024-12-02 12:47:07,510 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 12:47:07,512 INFO L435 NwaCegarLoop]: 188 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, 188 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:47:07,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:47:07,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-12-02 12:47:07,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2024-12-02 12:47:07,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 91 states have (on average 1.164835164835165) internal successors, (106), 92 states have internal predecessors, (106), 39 states have call successors, (39), 16 states have call predecessors, (39), 16 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-12-02 12:47:07,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 183 transitions. [2024-12-02 12:47:07,549 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 183 transitions. Word has length 80 [2024-12-02 12:47:07,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:47:07,551 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 183 transitions. [2024-12-02 12:47:07,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 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 12:47:07,551 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 183 transitions. [2024-12-02 12:47:07,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-02 12:47:07,554 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:47:07,554 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:47:07,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3c7915a-6aa1-48ec-88e6-33b2cd6dbcbd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 12:47:07,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3c7915a-6aa1-48ec-88e6-33b2cd6dbcbd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 12:47:07,755 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:47:07,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:47:07,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1131189901, now seen corresponding path program 1 times [2024-12-02 12:47:07,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:47:07,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235394] [2024-12-02 12:47:07,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:47:07,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:31,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:35,439 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-02 12:48:35,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:35,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235394] [2024-12-02 12:48:35,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235394] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:35,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:35,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 12:48:35,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145769824] [2024-12-02 12:48:35,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:35,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 12:48:35,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:35,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 12:48:35,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:48:35,442 INFO L87 Difference]: Start difference. First operand 147 states and 183 transitions. Second operand has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-12-02 12:48:35,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:35,795 INFO L93 Difference]: Finished difference Result 219 states and 281 transitions. [2024-12-02 12:48:35,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 12:48:35,795 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 80 [2024-12-02 12:48:35,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:35,798 INFO L225 Difference]: With dead ends: 219 [2024-12-02 12:48:35,798 INFO L226 Difference]: Without dead ends: 177 [2024-12-02 12:48:35,799 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:48:35,799 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 13 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:35,800 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 950 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 12:48:35,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-12-02 12:48:35,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 155. [2024-12-02 12:48:35,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 95 states have (on average 1.1578947368421053) internal successors, (110), 98 states have internal predecessors, (110), 42 states have call successors, (42), 16 states have call predecessors, (42), 17 states have return successors, (42), 40 states have call predecessors, (42), 41 states have call successors, (42) [2024-12-02 12:48:35,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 194 transitions. [2024-12-02 12:48:35,815 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 194 transitions. Word has length 80 [2024-12-02 12:48:35,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:35,816 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 194 transitions. [2024-12-02 12:48:35,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-12-02 12:48:35,816 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 194 transitions. [2024-12-02 12:48:35,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 12:48:35,818 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:35,818 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:35,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 12:48:35,818 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:48:35,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:35,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1572834276, now seen corresponding path program 1 times [2024-12-02 12:48:35,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:35,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540368124] [2024-12-02 12:48:35,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:35,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:50:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:50:01,397 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-02 12:50:01,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:50:01,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540368124] [2024-12-02 12:50:01,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540368124] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:50:01,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:50:01,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 12:50:01,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953686580] [2024-12-02 12:50:01,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:50:01,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:50:01,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:50:01,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:50:01,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:50:01,400 INFO L87 Difference]: Start difference. First operand 155 states and 194 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2024-12-02 12:50:01,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:50:01,526 INFO L93 Difference]: Finished difference Result 210 states and 262 transitions. [2024-12-02 12:50:01,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:50:01,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 94 [2024-12-02 12:50:01,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:50:01,529 INFO L225 Difference]: With dead ends: 210 [2024-12-02 12:50:01,529 INFO L226 Difference]: Without dead ends: 160 [2024-12-02 12:50:01,530 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:50:01,531 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 0 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 716 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 12:50:01,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 716 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:50:01,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-12-02 12:50:01,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2024-12-02 12:50:01,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 99 states have (on average 1.1515151515151516) internal successors, (114), 102 states have internal predecessors, (114), 42 states have call successors, (42), 16 states have call predecessors, (42), 18 states have return successors, (43), 41 states have call predecessors, (43), 41 states have call successors, (43) [2024-12-02 12:50:01,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 199 transitions. [2024-12-02 12:50:01,546 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 199 transitions. Word has length 94 [2024-12-02 12:50:01,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:50:01,546 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 199 transitions. [2024-12-02 12:50:01,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2024-12-02 12:50:01,547 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 199 transitions. [2024-12-02 12:50:01,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-12-02 12:50:01,548 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:50:01,549 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:50:01,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 12:50:01,549 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:50:01,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:50:01,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1089615061, now seen corresponding path program 1 times [2024-12-02 12:50:01,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:50:01,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386164855] [2024-12-02 12:50:01,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:50:01,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:25,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:29,959 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-02 12:51:29,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:29,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386164855] [2024-12-02 12:51:29,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386164855] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:51:29,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:51:29,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 12:51:29,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205025750] [2024-12-02 12:51:29,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:51:29,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 12:51:29,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:29,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 12:51:29,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-12-02 12:51:29,962 INFO L87 Difference]: Start difference. First operand 160 states and 199 transitions. Second operand has 15 states, 15 states have (on average 3.6) internal successors, (54), 14 states have internal predecessors, (54), 6 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2024-12-02 12:51:32,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:51:32,052 INFO L93 Difference]: Finished difference Result 217 states and 276 transitions. [2024-12-02 12:51:32,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 12:51:32,053 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 14 states have internal predecessors, (54), 6 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 95 [2024-12-02 12:51:32,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:51:32,055 INFO L225 Difference]: With dead ends: 217 [2024-12-02 12:51:32,055 INFO L226 Difference]: Without dead ends: 172 [2024-12-02 12:51:32,056 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2024-12-02 12:51:32,057 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 37 mSDsluCounter, 1944 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 12:51:32,057 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 2112 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 12:51:32,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-12-02 12:51:32,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 169. [2024-12-02 12:51:32,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 105 states have (on average 1.1523809523809523) internal successors, (121), 109 states have internal predecessors, (121), 44 states have call successors, (44), 16 states have call predecessors, (44), 19 states have return successors, (47), 43 states have call predecessors, (47), 42 states have call successors, (47) [2024-12-02 12:51:32,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 212 transitions. [2024-12-02 12:51:32,075 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 212 transitions. Word has length 95 [2024-12-02 12:51:32,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:51:32,075 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 212 transitions. [2024-12-02 12:51:32,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 14 states have internal predecessors, (54), 6 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2024-12-02 12:51:32,075 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 212 transitions. [2024-12-02 12:51:32,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-12-02 12:51:32,077 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:51:32,077 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:51:32,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 12:51:32,078 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:51:32,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:32,078 INFO L85 PathProgramCache]: Analyzing trace with hash 217038076, now seen corresponding path program 1 times [2024-12-02 12:51:32,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:32,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720121361] [2024-12-02 12:51:32,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:32,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:52:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:59,934 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-02 12:52:59,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:52:59,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720121361] [2024-12-02 12:52:59,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720121361] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:52:59,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:52:59,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 12:52:59,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091691034] [2024-12-02 12:52:59,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:52:59,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 12:52:59,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:52:59,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 12:52:59,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:52:59,936 INFO L87 Difference]: Start difference. First operand 169 states and 212 transitions. Second operand has 9 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2024-12-02 12:53:04,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 12:53:07,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:53:07,006 INFO L93 Difference]: Finished difference Result 238 states and 305 transitions. [2024-12-02 12:53:07,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 12:53:07,007 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 91 [2024-12-02 12:53:07,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:53:07,010 INFO L225 Difference]: With dead ends: 238 [2024-12-02 12:53:07,010 INFO L226 Difference]: Without dead ends: 188 [2024-12-02 12:53:07,010 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-12-02 12:53:07,011 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 187 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-12-02 12:53:07,012 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 1276 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 205 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2024-12-02 12:53:07,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-12-02 12:53:07,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 161. [2024-12-02 12:53:07,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 101 states have (on average 1.1584158415841583) internal successors, (117), 103 states have internal predecessors, (117), 41 states have call successors, (41), 16 states have call predecessors, (41), 18 states have return successors, (43), 41 states have call predecessors, (43), 39 states have call successors, (43) [2024-12-02 12:53:07,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 201 transitions. [2024-12-02 12:53:07,027 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 201 transitions. Word has length 91 [2024-12-02 12:53:07,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:53:07,028 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 201 transitions. [2024-12-02 12:53:07,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2024-12-02 12:53:07,028 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 201 transitions. [2024-12-02 12:53:07,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-12-02 12:53:07,029 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:53:07,029 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:53:07,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 12:53:07,030 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:53:07,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:53:07,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1533515735, now seen corresponding path program 1 times [2024-12-02 12:53:07,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:53:07,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033435574] [2024-12-02 12:53:07,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:53:07,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:54:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:54:34,998 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-02 12:54:34,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:54:34,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033435574] [2024-12-02 12:54:34,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033435574] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:54:34,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:54:34,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 12:54:34,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370642436] [2024-12-02 12:54:34,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:54:34,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 12:54:34,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:54:35,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 12:54:35,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:54:35,000 INFO L87 Difference]: Start difference. First operand 161 states and 201 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2024-12-02 12:54:35,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:54:35,223 INFO L93 Difference]: Finished difference Result 213 states and 264 transitions. [2024-12-02 12:54:35,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 12:54:35,224 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 95 [2024-12-02 12:54:35,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:54:35,225 INFO L225 Difference]: With dead ends: 213 [2024-12-02 12:54:35,225 INFO L226 Difference]: Without dead ends: 168 [2024-12-02 12:54:35,226 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:54:35,226 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 0 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 12:54:35,226 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1071 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 12:54:35,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-12-02 12:54:35,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-12-02 12:54:35,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 106 states have (on average 1.150943396226415) internal successors, (122), 108 states have internal predecessors, (122), 41 states have call successors, (41), 16 states have call predecessors, (41), 20 states have return successors, (45), 43 states have call predecessors, (45), 39 states have call successors, (45) [2024-12-02 12:54:35,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 208 transitions. [2024-12-02 12:54:35,240 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 208 transitions. Word has length 95 [2024-12-02 12:54:35,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:54:35,240 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 208 transitions. [2024-12-02 12:54:35,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2024-12-02 12:54:35,240 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 208 transitions. [2024-12-02 12:54:35,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 12:54:35,242 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:54:35,242 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2024-12-02 12:54:35,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 12:54:35,242 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:54:35,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:54:35,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1570126280, now seen corresponding path program 1 times [2024-12-02 12:54:35,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:54:35,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176442917] [2024-12-02 12:54:35,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:54:35,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:56:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:56:17,088 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-12-02 12:56:17,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:56:17,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176442917] [2024-12-02 12:56:17,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176442917] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:56:17,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796816799] [2024-12-02 12:56:17,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:56:17,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:56:17,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3c7915a-6aa1-48ec-88e6-33b2cd6dbcbd/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:56:17,090 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3c7915a-6aa1-48ec-88e6-33b2cd6dbcbd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:56:17,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3c7915a-6aa1-48ec-88e6-33b2cd6dbcbd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 12:57:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:57:41,140 INFO L256 TraceCheckSpWp]: Trace formula consists of 7788 conjuncts, 103 conjuncts are in the unsatisfiable core [2024-12-02 12:57:41,151 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:57:43,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 55 [2024-12-02 12:57:43,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 12:57:43,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 12:57:43,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 115 [2024-12-02 12:57:43,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 61 [2024-12-02 12:57:43,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 12:57:43,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 12:57:43,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 12:57:43,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 12:57:43,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 113 [2024-12-02 12:57:44,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 12:57:44,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 12:57:44,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 12:57:44,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 12:57:44,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 30 [2024-12-02 12:57:44,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 12:57:44,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 12:57:44,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 12:57:44,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 12:57:44,610 INFO L224 Elim1Store]: Index analysis took 153 ms [2024-12-02 12:57:44,611 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 12:57:44,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 21 [2024-12-02 12:57:46,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-12-02 12:57:46,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-12-02 12:57:50,517 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 12:57:50,517 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:58:00,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-12-02 12:58:01,367 INFO L349 Elim1Store]: treesize reduction 26, result has 71.4 percent of original size [2024-12-02 12:58:01,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 134 [2024-12-02 12:58:01,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-12-02 12:58:01,482 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 12:58:01,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 6 [2024-12-02 12:58:01,734 INFO L349 Elim1Store]: treesize reduction 32, result has 57.3 percent of original size [2024-12-02 12:58:01,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 58 treesize of output 102 [2024-12-02 12:58:02,466 INFO L349 Elim1Store]: treesize reduction 19, result has 55.8 percent of original size [2024-12-02 12:58:02,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 102 treesize of output 75 [2024-12-02 12:58:02,956 INFO L224 Elim1Store]: Index analysis took 137 ms [2024-12-02 12:58:02,992 INFO L349 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2024-12-02 12:58:02,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 92 treesize of output 31 [2024-12-02 12:58:03,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2024-12-02 12:58:03,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2024-12-02 12:58:05,614 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-12-02 12:58:05,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796816799] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:58:05,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:58:05,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 22, 20] total 46 [2024-12-02 12:58:05,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782495171] [2024-12-02 12:58:05,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:58:05,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-12-02 12:58:05,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:58:05,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-12-02 12:58:05,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1943, Unknown=0, NotChecked=0, Total=2070 [2024-12-02 12:58:05,617 INFO L87 Difference]: Start difference. First operand 168 states and 208 transitions. Second operand has 46 states, 39 states have (on average 2.7948717948717947) internal successors, (109), 40 states have internal predecessors, (109), 16 states have call successors, (36), 3 states have call predecessors, (36), 8 states have return successors, (36), 15 states have call predecessors, (36), 16 states have call successors, (36) [2024-12-02 12:58:17,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:58:17,008 INFO L93 Difference]: Finished difference Result 326 states and 402 transitions. [2024-12-02 12:58:17,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-02 12:58:17,009 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 39 states have (on average 2.7948717948717947) internal successors, (109), 40 states have internal predecessors, (109), 16 states have call successors, (36), 3 states have call predecessors, (36), 8 states have return successors, (36), 15 states have call predecessors, (36), 16 states have call successors, (36) Word has length 103 [2024-12-02 12:58:17,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:58:17,011 INFO L225 Difference]: With dead ends: 326 [2024-12-02 12:58:17,011 INFO L226 Difference]: Without dead ends: 177 [2024-12-02 12:58:17,013 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 19.5s TimeCoverageRelationStatistics Valid=206, Invalid=3100, Unknown=0, NotChecked=0, Total=3306 [2024-12-02 12:58:17,014 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 41 mSDsluCounter, 4234 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 4398 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:58:17,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 4398 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2024-12-02 12:58:17,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-12-02 12:58:17,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 173. [2024-12-02 12:58:17,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 111 states have (on average 1.1441441441441442) internal successors, (127), 113 states have internal predecessors, (127), 41 states have call successors, (41), 16 states have call predecessors, (41), 20 states have return successors, (45), 43 states have call predecessors, (45), 39 states have call successors, (45) [2024-12-02 12:58:17,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 213 transitions. [2024-12-02 12:58:17,031 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 213 transitions. Word has length 103 [2024-12-02 12:58:17,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:58:17,032 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 213 transitions. [2024-12-02 12:58:17,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 39 states have (on average 2.7948717948717947) internal successors, (109), 40 states have internal predecessors, (109), 16 states have call successors, (36), 3 states have call predecessors, (36), 8 states have return successors, (36), 15 states have call predecessors, (36), 16 states have call successors, (36) [2024-12-02 12:58:17,032 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 213 transitions. [2024-12-02 12:58:17,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 12:58:17,034 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:58:17,034 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2024-12-02 12:58:17,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3c7915a-6aa1-48ec-88e6-33b2cd6dbcbd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-02 12:58:17,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3c7915a-6aa1-48ec-88e6-33b2cd6dbcbd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-12-02 12:58:17,234 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:58:17,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:58:17,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1460842257, now seen corresponding path program 1 times [2024-12-02 12:58:17,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:58:17,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470988767] [2024-12-02 12:58:17,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:58:17,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms