./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_init6_ground-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/standard_init6_ground-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 388c926a79a6b5e7bef889b40d9a18e5c4aeb62f40be1f5a1ab2f0fe0344f6c1 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:12:18,968 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:12:19,062 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:12:19,070 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:12:19,073 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:12:19,123 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:12:19,125 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:12:19,125 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:12:19,126 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:12:19,126 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:12:19,128 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:12:19,128 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:12:19,128 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:12:19,128 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:12:19,129 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:12:19,130 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:12:19,130 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:12:19,130 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:12:19,130 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:12:19,130 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:12:19,130 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:12:19,131 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:12:19,131 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:12:19,131 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:12:19,131 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:12:19,131 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:12:19,131 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:12:19,131 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:12:19,132 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:12:19,132 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:12:19,133 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:12:19,133 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:12:19,133 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:12:19,133 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:12:19,133 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:12:19,133 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:12:19,133 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:12:19,134 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:12:19,134 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:12:19,134 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:12:19,134 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:12:19,134 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:12:19,134 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:12:19,134 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:12:19,135 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:12:19,135 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:12:19,135 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:12:19,135 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:12:19,135 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_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 388c926a79a6b5e7bef889b40d9a18e5c4aeb62f40be1f5a1ab2f0fe0344f6c1 [2024-11-28 03:12:19,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:12:19,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:12:19,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:12:19,495 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:12:19,495 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:12:19,497 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/array-examples/standard_init6_ground-2.i [2024-11-28 03:12:22,832 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/data/56a3c7c42/a681de0e03ba48dab101c6b89071fd8e/FLAG30015fd48 [2024-11-28 03:12:23,113 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:12:23,115 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/sv-benchmarks/c/array-examples/standard_init6_ground-2.i [2024-11-28 03:12:23,125 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/data/56a3c7c42/a681de0e03ba48dab101c6b89071fd8e/FLAG30015fd48 [2024-11-28 03:12:23,155 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/data/56a3c7c42/a681de0e03ba48dab101c6b89071fd8e [2024-11-28 03:12:23,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:12:23,161 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:12:23,163 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:12:23,163 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:12:23,168 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:12:23,169 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:12:23" (1/1) ... [2024-11-28 03:12:23,172 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71b56ade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:23, skipping insertion in model container [2024-11-28 03:12:23,172 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:12:23" (1/1) ... [2024-11-28 03:12:23,190 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:12:23,378 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_768297db-6c5c-41e1-93ea-90d8df4f932a/sv-benchmarks/c/array-examples/standard_init6_ground-2.i[816,829] [2024-11-28 03:12:23,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:12:23,411 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:12:23,424 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_768297db-6c5c-41e1-93ea-90d8df4f932a/sv-benchmarks/c/array-examples/standard_init6_ground-2.i[816,829] [2024-11-28 03:12:23,440 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:12:23,459 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:12:23,460 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:23 WrapperNode [2024-11-28 03:12:23,462 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:12:23,465 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:12:23,465 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:12:23,465 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:12:23,474 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:23" (1/1) ... [2024-11-28 03:12:23,482 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:23" (1/1) ... [2024-11-28 03:12:23,508 INFO L138 Inliner]: procedures = 15, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2024-11-28 03:12:23,508 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:12:23,509 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:12:23,510 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:12:23,510 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:12:23,522 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:23" (1/1) ... [2024-11-28 03:12:23,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:23" (1/1) ... [2024-11-28 03:12:23,529 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:23" (1/1) ... [2024-11-28 03:12:23,555 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 6 writes are split as follows [0, 6]. [2024-11-28 03:12:23,556 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:23" (1/1) ... [2024-11-28 03:12:23,556 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:23" (1/1) ... [2024-11-28 03:12:23,566 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:23" (1/1) ... [2024-11-28 03:12:23,571 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:23" (1/1) ... [2024-11-28 03:12:23,578 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:23" (1/1) ... [2024-11-28 03:12:23,580 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:23" (1/1) ... [2024-11-28 03:12:23,581 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:23" (1/1) ... [2024-11-28 03:12:23,583 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:12:23,584 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:12:23,584 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:12:23,584 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:12:23,586 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:23" (1/1) ... [2024-11-28 03:12:23,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:12:23,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:23,626 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:12:23,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:12:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:12:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:12:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:12:23,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 03:12:23,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:12:23,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:12:23,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:12:23,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:12:23,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:12:23,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:12:23,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:12:23,751 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:12:23,753 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:12:24,036 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-11-28 03:12:24,037 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:12:24,055 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:12:24,056 INFO L312 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-28 03:12:24,056 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:12:24 BoogieIcfgContainer [2024-11-28 03:12:24,057 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:12:24,061 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:12:24,061 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:12:24,067 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:12:24,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:12:23" (1/3) ... [2024-11-28 03:12:24,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f567ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:12:24, skipping insertion in model container [2024-11-28 03:12:24,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:23" (2/3) ... [2024-11-28 03:12:24,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f567ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:12:24, skipping insertion in model container [2024-11-28 03:12:24,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:12:24" (3/3) ... [2024-11-28 03:12:24,071 INFO L128 eAbstractionObserver]: Analyzing ICFG standard_init6_ground-2.i [2024-11-28 03:12:24,092 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:12:24,094 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG standard_init6_ground-2.i that has 1 procedures, 30 locations, 1 initial locations, 7 loop locations, and 1 error locations. [2024-11-28 03:12:24,181 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:12:24,200 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;@647518a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:12:24,200 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:12:24,205 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:24,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-28 03:12:24,214 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:24,215 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:12:24,215 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:12:24,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:24,223 INFO L85 PathProgramCache]: Analyzing trace with hash 618632717, now seen corresponding path program 1 times [2024-11-28 03:12:24,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:24,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568060738] [2024-11-28 03:12:24,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:24,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:24,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:12:24,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:24,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568060738] [2024-11-28 03:12:24,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568060738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:12:24,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:12:24,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:12:24,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446129450] [2024-11-28 03:12:24,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:12:24,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:12:24,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:24,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:12:24,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:12:24,610 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:24,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:24,776 INFO L93 Difference]: Finished difference Result 68 states and 106 transitions. [2024-11-28 03:12:24,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:12:24,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-28 03:12:24,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:24,788 INFO L225 Difference]: With dead ends: 68 [2024-11-28 03:12:24,788 INFO L226 Difference]: Without dead ends: 38 [2024-11-28 03:12:24,793 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:12:24,798 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:24,799 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 35 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:12:24,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-28 03:12:24,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2024-11-28 03:12:24,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:24,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2024-11-28 03:12:24,873 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 18 [2024-11-28 03:12:24,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:24,874 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2024-11-28 03:12:24,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:24,875 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2024-11-28 03:12:24,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-28 03:12:24,876 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:24,877 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:12:24,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:12:24,879 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:12:24,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:24,880 INFO L85 PathProgramCache]: Analyzing trace with hash 903596901, now seen corresponding path program 1 times [2024-11-28 03:12:24,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:24,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134548104] [2024-11-28 03:12:24,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:24,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:25,119 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 03:12:25,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:25,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134548104] [2024-11-28 03:12:25,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134548104] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:12:25,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548709870] [2024-11-28 03:12:25,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:25,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:25,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:25,123 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:12:25,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:12:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:25,300 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:12:25,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:12:25,384 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 03:12:25,387 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:12:25,457 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 03:12:25,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548709870] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:12:25,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:12:25,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-28 03:12:25,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578157118] [2024-11-28 03:12:25,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:12:25,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:12:25,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:25,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:12:25,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:12:25,464 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:25,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:25,759 INFO L93 Difference]: Finished difference Result 95 states and 124 transitions. [2024-11-28 03:12:25,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:12:25,760 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-28 03:12:25,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:25,761 INFO L225 Difference]: With dead ends: 95 [2024-11-28 03:12:25,761 INFO L226 Difference]: Without dead ends: 68 [2024-11-28 03:12:25,765 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:12:25,766 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 27 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:25,767 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 52 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:12:25,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-28 03:12:25,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2024-11-28 03:12:25,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.1044776119402986) internal successors, (74), 67 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:25,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2024-11-28 03:12:25,787 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 30 [2024-11-28 03:12:25,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:25,787 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2024-11-28 03:12:25,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:25,788 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2024-11-28 03:12:25,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 03:12:25,792 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:25,792 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:12:25,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:12:25,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-28 03:12:25,993 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:12:25,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:25,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1761375085, now seen corresponding path program 2 times [2024-11-28 03:12:25,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:25,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455227527] [2024-11-28 03:12:25,994 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:12:25,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:26,106 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:12:26,106 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:12:26,479 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-28 03:12:26,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:26,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455227527] [2024-11-28 03:12:26,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455227527] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:12:26,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219627444] [2024-11-28 03:12:26,479 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:12:26,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:26,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:26,482 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:12:26,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:12:26,694 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:12:26,695 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:12:26,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:12:26,700 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:12:26,758 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-28 03:12:26,758 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:12:26,912 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-28 03:12:26,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219627444] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:12:26,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:12:26,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-28 03:12:26,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574678482] [2024-11-28 03:12:26,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:12:26,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:12:26,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:26,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:12:26,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:12:26,918 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:27,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:27,427 INFO L93 Difference]: Finished difference Result 197 states and 244 transitions. [2024-11-28 03:12:27,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:12:27,430 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-28 03:12:27,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:27,432 INFO L225 Difference]: With dead ends: 197 [2024-11-28 03:12:27,432 INFO L226 Difference]: Without dead ends: 140 [2024-11-28 03:12:27,433 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:12:27,438 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 87 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:27,438 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 60 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:12:27,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-28 03:12:27,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2024-11-28 03:12:27,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.0503597122302157) internal successors, (146), 139 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:27,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 146 transitions. [2024-11-28 03:12:27,460 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 146 transitions. Word has length 66 [2024-11-28 03:12:27,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:27,460 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 146 transitions. [2024-11-28 03:12:27,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:27,461 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 146 transitions. [2024-11-28 03:12:27,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-28 03:12:27,465 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:27,465 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:12:27,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:12:27,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:27,669 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:12:27,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:27,670 INFO L85 PathProgramCache]: Analyzing trace with hash 583526269, now seen corresponding path program 3 times [2024-11-28 03:12:27,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:27,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211763544] [2024-11-28 03:12:27,670 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:12:27,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:27,971 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-28 03:12:27,971 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:12:28,965 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2024-11-28 03:12:28,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:28,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211763544] [2024-11-28 03:12:28,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211763544] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:12:28,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136469164] [2024-11-28 03:12:28,966 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:12:28,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:28,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:28,970 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:12:28,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:12:41,209 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-28 03:12:41,210 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:12:41,219 INFO L256 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 03:12:41,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:12:41,353 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 19 proven. 100 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2024-11-28 03:12:41,353 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:12:41,755 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 157 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2024-11-28 03:12:41,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136469164] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:12:41,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:12:41,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 13] total 26 [2024-11-28 03:12:41,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456790916] [2024-11-28 03:12:41,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:12:41,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 03:12:41,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:41,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 03:12:41,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2024-11-28 03:12:41,759 INFO L87 Difference]: Start difference. First operand 140 states and 146 transitions. Second operand has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 26 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:42,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:42,683 INFO L93 Difference]: Finished difference Result 401 states and 484 transitions. [2024-11-28 03:12:42,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 03:12:42,684 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 26 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2024-11-28 03:12:42,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:42,689 INFO L225 Difference]: With dead ends: 401 [2024-11-28 03:12:42,689 INFO L226 Difference]: Without dead ends: 284 [2024-11-28 03:12:42,691 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2024-11-28 03:12:42,691 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 339 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:42,692 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 46 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 03:12:42,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2024-11-28 03:12:42,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2024-11-28 03:12:42,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 1.0247349823321554) internal successors, (290), 283 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:42,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 290 transitions. [2024-11-28 03:12:42,748 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 290 transitions. Word has length 138 [2024-11-28 03:12:42,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:42,748 INFO L471 AbstractCegarLoop]: Abstraction has 284 states and 290 transitions. [2024-11-28 03:12:42,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 26 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:42,749 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 290 transitions. [2024-11-28 03:12:42,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2024-11-28 03:12:42,761 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:42,761 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:12:42,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 03:12:42,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:42,962 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:12:42,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:42,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1466998883, now seen corresponding path program 4 times [2024-11-28 03:12:42,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:42,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928707679] [2024-11-28 03:12:42,963 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:12:42,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:43,142 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:12:43,142 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:12:45,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 2420 trivial. 0 not checked. [2024-11-28 03:12:45,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:45,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928707679] [2024-11-28 03:12:45,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928707679] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:12:45,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283473423] [2024-11-28 03:12:45,099 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:12:45,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:45,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:45,102 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:12:45,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:12:45,442 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:12:45,442 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:12:45,447 INFO L256 TraceCheckSpWp]: Trace formula consists of 983 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 03:12:45,455 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:12:45,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 2420 trivial. 0 not checked. [2024-11-28 03:12:45,624 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:12:46,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 2420 trivial. 0 not checked. [2024-11-28 03:12:46,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283473423] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:12:46,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:12:46,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-28 03:12:46,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560941010] [2024-11-28 03:12:46,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:12:46,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-28 03:12:46,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:46,952 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-28 03:12:46,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-28 03:12:46,954 INFO L87 Difference]: Start difference. First operand 284 states and 290 transitions. Second operand has 49 states, 49 states have (on average 2.4693877551020407) internal successors, (121), 49 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:49,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:49,333 INFO L93 Difference]: Finished difference Result 809 states and 964 transitions. [2024-11-28 03:12:49,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-28 03:12:49,334 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.4693877551020407) internal successors, (121), 49 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 282 [2024-11-28 03:12:49,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:49,341 INFO L225 Difference]: With dead ends: 809 [2024-11-28 03:12:49,341 INFO L226 Difference]: Without dead ends: 572 [2024-11-28 03:12:49,344 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 540 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-28 03:12:49,345 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 807 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 932 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 932 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:49,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 60 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [932 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 03:12:49,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-11-28 03:12:49,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2024-11-28 03:12:49,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 571 states have (on average 1.0122591943957968) internal successors, (578), 571 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:49,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 578 transitions. [2024-11-28 03:12:49,414 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 578 transitions. Word has length 282 [2024-11-28 03:12:49,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:49,418 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 578 transitions. [2024-11-28 03:12:49,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.4693877551020407) internal successors, (121), 49 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:49,418 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 578 transitions. [2024-11-28 03:12:49,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2024-11-28 03:12:49,438 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:49,439 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:12:49,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 03:12:49,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:49,643 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:12:49,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:49,644 INFO L85 PathProgramCache]: Analyzing trace with hash 488673245, now seen corresponding path program 5 times [2024-11-28 03:12:49,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:49,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810263494] [2024-11-28 03:12:49,644 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:12:49,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:51,162 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-11-28 03:12:51,162 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:12:57,409 INFO L134 CoverageAnalysis]: Checked inductivity of 12696 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 10580 trivial. 0 not checked. [2024-11-28 03:12:57,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:57,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810263494] [2024-11-28 03:12:57,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810263494] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:12:57,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872539815] [2024-11-28 03:12:57,410 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:12:57,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:57,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:57,413 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:12:57,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_768297db-6c5c-41e1-93ea-90d8df4f932a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process