./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_partition_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_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/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_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/standard_partition_ground-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/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 32bit --witnessprinter.graph.data.programhash fcf72d109deb69f1acda4466c7376bd6c362d474983f8a50a2faed8c0a192a76 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 15:33:37,958 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 15:33:38,015 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 15:33:38,020 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 15:33:38,020 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 15:33:38,041 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 15:33:38,042 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 15:33:38,042 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 15:33:38,042 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 15:33:38,042 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 15:33:38,043 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 15:33:38,043 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 15:33:38,043 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 15:33:38,043 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 15:33:38,043 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 15:33:38,043 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 15:33:38,043 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 15:33:38,043 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 15:33:38,043 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 15:33:38,044 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 15:33:38,044 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 15:33:38,044 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 15:33:38,044 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 15:33:38,044 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 15:33:38,044 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 15:33:38,044 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 15:33:38,044 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 15:33:38,044 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 15:33:38,044 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 15:33:38,044 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:33:38,044 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:33:38,044 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:33:38,044 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:33:38,045 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 15:33:38,045 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:33:38,045 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:33:38,045 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:33:38,045 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:33:38,045 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 15:33:38,045 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 15:33:38,045 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 15:33:38,045 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 15:33:38,045 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 15:33:38,045 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 15:33:38,046 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 15:33:38,046 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 15:33:38,046 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 15:33:38,046 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 15:33:38,046 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_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fcf72d109deb69f1acda4466c7376bd6c362d474983f8a50a2faed8c0a192a76 [2024-12-02 15:33:38,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 15:33:38,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 15:33:38,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 15:33:38,282 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 15:33:38,283 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 15:33:38,284 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/array-examples/standard_partition_ground-2.i [2024-12-02 15:33:40,917 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/data/75facfbcc/e80a55a2197440b4bbb7e20621eccda7/FLAG9cc7e926a [2024-12-02 15:33:41,105 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 15:33:41,106 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/sv-benchmarks/c/array-examples/standard_partition_ground-2.i [2024-12-02 15:33:41,112 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/data/75facfbcc/e80a55a2197440b4bbb7e20621eccda7/FLAG9cc7e926a [2024-12-02 15:33:41,124 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/data/75facfbcc/e80a55a2197440b4bbb7e20621eccda7 [2024-12-02 15:33:41,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 15:33:41,127 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 15:33:41,128 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 15:33:41,128 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 15:33:41,132 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 15:33:41,133 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:33:41" (1/1) ... [2024-12-02 15:33:41,134 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59586b09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:41, skipping insertion in model container [2024-12-02 15:33:41,134 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:33:41" (1/1) ... [2024-12-02 15:33:41,145 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 15:33:41,273 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_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/sv-benchmarks/c/array-examples/standard_partition_ground-2.i[820,833] [2024-12-02 15:33:41,289 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:33:41,296 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 15:33:41,306 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_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/sv-benchmarks/c/array-examples/standard_partition_ground-2.i[820,833] [2024-12-02 15:33:41,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:33:41,329 INFO L204 MainTranslator]: Completed translation [2024-12-02 15:33:41,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:41 WrapperNode [2024-12-02 15:33:41,330 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 15:33:41,331 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 15:33:41,331 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 15:33:41,331 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 15:33:41,337 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:41" (1/1) ... [2024-12-02 15:33:41,343 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:41" (1/1) ... [2024-12-02 15:33:41,357 INFO L138 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 77 [2024-12-02 15:33:41,358 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 15:33:41,358 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 15:33:41,358 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 15:33:41,358 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 15:33:41,367 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:41" (1/1) ... [2024-12-02 15:33:41,367 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:41" (1/1) ... [2024-12-02 15:33:41,368 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:41" (1/1) ... [2024-12-02 15:33:41,380 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 2, 5]. 56 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-12-02 15:33:41,380 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:41" (1/1) ... [2024-12-02 15:33:41,380 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:41" (1/1) ... [2024-12-02 15:33:41,384 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:41" (1/1) ... [2024-12-02 15:33:41,385 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:41" (1/1) ... [2024-12-02 15:33:41,388 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:41" (1/1) ... [2024-12-02 15:33:41,389 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:41" (1/1) ... [2024-12-02 15:33:41,389 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:41" (1/1) ... [2024-12-02 15:33:41,391 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 15:33:41,392 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 15:33:41,392 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 15:33:41,392 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 15:33:41,393 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:41" (1/1) ... [2024-12-02 15:33:41,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:33:41,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:33:41,420 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 15:33:41,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 15:33:41,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 15:33:41,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 15:33:41,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 15:33:41,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 15:33:41,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 15:33:41,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 15:33:41,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 15:33:41,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 15:33:41,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 15:33:41,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 15:33:41,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 15:33:41,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 15:33:41,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 15:33:41,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 15:33:41,512 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 15:33:41,514 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 15:33:41,622 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-12-02 15:33:41,622 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 15:33:41,629 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 15:33:41,629 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-12-02 15:33:41,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:33:41 BoogieIcfgContainer [2024-12-02 15:33:41,630 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 15:33:41,631 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 15:33:41,631 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 15:33:41,635 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 15:33:41,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:33:41" (1/3) ... [2024-12-02 15:33:41,636 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1067e0c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:33:41, skipping insertion in model container [2024-12-02 15:33:41,636 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:41" (2/3) ... [2024-12-02 15:33:41,636 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1067e0c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:33:41, skipping insertion in model container [2024-12-02 15:33:41,636 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:33:41" (3/3) ... [2024-12-02 15:33:41,637 INFO L128 eAbstractionObserver]: Analyzing ICFG standard_partition_ground-2.i [2024-12-02 15:33:41,651 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 15:33:41,652 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG standard_partition_ground-2.i that has 1 procedures, 25 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-12-02 15:33:41,700 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:33:41,711 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;@7a1c8a43, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:33:41,711 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 15:33:41,715 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 24 states have internal predecessors, (35), 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) [2024-12-02 15:33:41,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-12-02 15:33:41,720 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:33:41,721 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:33:41,721 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:33:41,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:33:41,726 INFO L85 PathProgramCache]: Analyzing trace with hash 593514515, now seen corresponding path program 1 times [2024-12-02 15:33:41,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:33:41,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513998468] [2024-12-02 15:33:41,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:33:41,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:33:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:33:41,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:33:41,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:33:41,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513998468] [2024-12-02 15:33:41,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513998468] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:33:41,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:33:41,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:33:41,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175073047] [2024-12-02 15:33:41,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:33:41,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:33:41,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:33:41,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:33:41,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:33:41,915 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 24 states have internal predecessors, (35), 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 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2024-12-02 15:33:41,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:33:41,941 INFO L93 Difference]: Finished difference Result 48 states and 68 transitions. [2024-12-02 15:33:41,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:33:41,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2024-12-02 15:33:41,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:33:41,948 INFO L225 Difference]: With dead ends: 48 [2024-12-02 15:33:41,948 INFO L226 Difference]: Without dead ends: 23 [2024-12-02 15:33:41,950 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 [2024-12-02 15:33:41,952 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:33:41,952 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 52 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:33:41,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-12-02 15:33:41,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2024-12-02 15:33:41,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 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) [2024-12-02 15:33:41,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-12-02 15:33:41,978 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 12 [2024-12-02 15:33:41,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:33:41,978 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-12-02 15:33:41,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2024-12-02 15:33:41,979 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-12-02 15:33:41,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-12-02 15:33:41,979 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:33:41,979 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:33:41,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 15:33:41,979 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:33:41,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:33:41,980 INFO L85 PathProgramCache]: Analyzing trace with hash -255284499, now seen corresponding path program 1 times [2024-12-02 15:33:41,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:33:41,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950117970] [2024-12-02 15:33:41,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:33:41,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:33:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:33:42,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 15:33:42,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:33:42,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950117970] [2024-12-02 15:33:42,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950117970] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:33:42,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:33:42,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:33:42,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055743013] [2024-12-02 15:33:42,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:33:42,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:33:42,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:33:42,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:33:42,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:33:42,061 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2024-12-02 15:33:42,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:33:42,105 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2024-12-02 15:33:42,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:33:42,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2024-12-02 15:33:42,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:33:42,106 INFO L225 Difference]: With dead ends: 42 [2024-12-02 15:33:42,106 INFO L226 Difference]: Without dead ends: 30 [2024-12-02 15:33:42,106 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 [2024-12-02 15:33:42,107 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 8 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:33:42,107 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 28 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:33:42,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-12-02 15:33:42,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2024-12-02 15:33:42,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 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) [2024-12-02 15:33:42,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2024-12-02 15:33:42,112 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 14 [2024-12-02 15:33:42,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:33:42,112 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2024-12-02 15:33:42,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2024-12-02 15:33:42,112 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2024-12-02 15:33:42,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-12-02 15:33:42,113 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:33:42,113 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] [2024-12-02 15:33:42,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 15:33:42,113 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:33:42,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:33:42,114 INFO L85 PathProgramCache]: Analyzing trace with hash 366316925, now seen corresponding path program 1 times [2024-12-02 15:33:42,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:33:42,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248958006] [2024-12-02 15:33:42,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:33:42,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:33:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:33:42,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:33:42,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:33:42,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248958006] [2024-12-02 15:33:42,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248958006] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:33:42,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160229039] [2024-12-02 15:33:42,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:33:42,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:33:42,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:33:42,203 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:33:42,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 15:33:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:33:42,278 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 15:33:42,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:33:42,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:33:42,316 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:33:42,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:33:42,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160229039] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:33:42,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:33:42,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-12-02 15:33:42,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446350219] [2024-12-02 15:33:42,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:33:42,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 15:33:42,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:33:42,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 15:33:42,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:33:42,345 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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) [2024-12-02 15:33:42,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:33:42,375 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2024-12-02 15:33:42,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 15:33:42,375 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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 22 [2024-12-02 15:33:42,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:33:42,376 INFO L225 Difference]: With dead ends: 49 [2024-12-02 15:33:42,376 INFO L226 Difference]: Without dead ends: 30 [2024-12-02 15:33:42,376 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:33:42,377 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 2 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:33:42,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 66 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:33:42,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-12-02 15:33:42,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-12-02 15:33:42,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 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) [2024-12-02 15:33:42,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2024-12-02 15:33:42,382 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 22 [2024-12-02 15:33:42,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:33:42,383 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2024-12-02 15:33:42,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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) [2024-12-02 15:33:42,383 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2024-12-02 15:33:42,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-12-02 15:33:42,383 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:33:42,383 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:33:42,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 15:33:42,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:33:42,584 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:33:42,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:33:42,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1255456439, now seen corresponding path program 2 times [2024-12-02 15:33:42,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:33:42,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620201891] [2024-12-02 15:33:42,585 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:33:42,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:33:42,613 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:33:42,614 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:33:42,685 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-12-02 15:33:42,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:33:42,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620201891] [2024-12-02 15:33:42,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620201891] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:33:42,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564449185] [2024-12-02 15:33:42,686 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:33:42,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:33:42,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:33:42,688 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:33:42,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 15:33:42,753 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:33:42,754 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:33:42,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 15:33:42,756 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:33:42,818 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:33:42,818 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:33:42,893 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:33:42,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564449185] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:33:42,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:33:42,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-12-02 15:33:42,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075713075] [2024-12-02 15:33:42,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:33:42,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 15:33:42,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:33:42,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 15:33:42,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-12-02 15:33:42,895 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 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) [2024-12-02 15:33:43,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:33:43,079 INFO L93 Difference]: Finished difference Result 75 states and 96 transitions. [2024-12-02 15:33:43,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 15:33:43,080 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 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 28 [2024-12-02 15:33:43,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:33:43,080 INFO L225 Difference]: With dead ends: 75 [2024-12-02 15:33:43,080 INFO L226 Difference]: Without dead ends: 56 [2024-12-02 15:33:43,081 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=211, Invalid=341, Unknown=0, NotChecked=0, Total=552 [2024-12-02 15:33:43,082 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 15 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:33:43,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 75 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:33:43,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-12-02 15:33:43,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2024-12-02 15:33:43,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.163265306122449) internal successors, (57), 49 states have internal predecessors, (57), 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) [2024-12-02 15:33:43,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2024-12-02 15:33:43,089 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 28 [2024-12-02 15:33:43,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:33:43,089 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2024-12-02 15:33:43,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 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) [2024-12-02 15:33:43,089 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2024-12-02 15:33:43,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-12-02 15:33:43,090 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:33:43,090 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:33:43,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 15:33:43,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:33:43,291 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:33:43,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:33:43,291 INFO L85 PathProgramCache]: Analyzing trace with hash 131030129, now seen corresponding path program 3 times [2024-12-02 15:33:43,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:33:43,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744014751] [2024-12-02 15:33:43,292 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:33:43,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:33:43,324 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-12-02 15:33:43,324 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:33:43,391 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-12-02 15:33:43,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:33:43,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744014751] [2024-12-02 15:33:43,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744014751] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:33:43,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153846928] [2024-12-02 15:33:43,391 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:33:43,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:33:43,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:33:43,393 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:33:43,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 15:33:43,471 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-12-02 15:33:43,472 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:33:43,472 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 15:33:43,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:33:43,512 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-12-02 15:33:43,512 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:33:43,548 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-12-02 15:33:43,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153846928] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:33:43,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:33:43,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-12-02 15:33:43,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342730735] [2024-12-02 15:33:43,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:33:43,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 15:33:43,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:33:43,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 15:33:43,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:33:43,551 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 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) [2024-12-02 15:33:43,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:33:43,655 INFO L93 Difference]: Finished difference Result 99 states and 125 transitions. [2024-12-02 15:33:43,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 15:33:43,656 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 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 48 [2024-12-02 15:33:43,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:33:43,656 INFO L225 Difference]: With dead ends: 99 [2024-12-02 15:33:43,657 INFO L226 Difference]: Without dead ends: 82 [2024-12-02 15:33:43,657 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:33:43,658 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 78 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:33:43,658 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 46 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:33:43,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-12-02 15:33:43,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-12-02 15:33:43,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.1975308641975309) internal successors, (97), 81 states have internal predecessors, (97), 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) [2024-12-02 15:33:43,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 97 transitions. [2024-12-02 15:33:43,666 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 97 transitions. Word has length 48 [2024-12-02 15:33:43,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:33:43,666 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 97 transitions. [2024-12-02 15:33:43,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 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) [2024-12-02 15:33:43,666 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 97 transitions. [2024-12-02 15:33:43,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-02 15:33:43,668 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:33:43,668 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:33:43,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 15:33:43,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:33:43,869 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:33:43,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:33:43,870 INFO L85 PathProgramCache]: Analyzing trace with hash 2006431409, now seen corresponding path program 4 times [2024-12-02 15:33:43,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:33:43,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371330141] [2024-12-02 15:33:43,870 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:33:43,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:33:43,922 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:33:43,922 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:33:44,117 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2024-12-02 15:33:44,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:33:44,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371330141] [2024-12-02 15:33:44,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371330141] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:33:44,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100588804] [2024-12-02 15:33:44,117 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:33:44,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:33:44,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:33:44,119 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:33:44,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 15:33:44,240 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:33:44,240 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:33:44,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 15:33:44,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:33:44,304 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2024-12-02 15:33:44,304 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:33:44,432 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2024-12-02 15:33:44,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100588804] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:33:44,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:33:44,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-12-02 15:33:44,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667366126] [2024-12-02 15:33:44,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:33:44,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 15:33:44,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:33:44,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 15:33:44,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2024-12-02 15:33:44,435 INFO L87 Difference]: Start difference. First operand 82 states and 97 transitions. Second operand has 16 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 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) [2024-12-02 15:33:44,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:33:44,613 INFO L93 Difference]: Finished difference Result 179 states and 233 transitions. [2024-12-02 15:33:44,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 15:33:44,614 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 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 80 [2024-12-02 15:33:44,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:33:44,615 INFO L225 Difference]: With dead ends: 179 [2024-12-02 15:33:44,615 INFO L226 Difference]: Without dead ends: 146 [2024-12-02 15:33:44,615 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2024-12-02 15:33:44,616 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 90 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:33:44,616 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 92 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:33:44,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-12-02 15:33:44,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2024-12-02 15:33:44,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.2206896551724138) internal successors, (177), 145 states have internal predecessors, (177), 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) [2024-12-02 15:33:44,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 177 transitions. [2024-12-02 15:33:44,627 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 177 transitions. Word has length 80 [2024-12-02 15:33:44,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:33:44,628 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 177 transitions. [2024-12-02 15:33:44,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 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) [2024-12-02 15:33:44,628 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 177 transitions. [2024-12-02 15:33:44,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-12-02 15:33:44,630 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:33:44,630 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:33:44,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 15:33:44,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-12-02 15:33:44,831 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:33:44,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:33:44,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1647274801, now seen corresponding path program 5 times [2024-12-02 15:33:44,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:33:44,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126595898] [2024-12-02 15:33:44,831 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:33:44,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:33:44,954 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-12-02 15:33:44,954 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:33:45,355 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 478 trivial. 0 not checked. [2024-12-02 15:33:45,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:33:45,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126595898] [2024-12-02 15:33:45,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126595898] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:33:45,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989938927] [2024-12-02 15:33:45,356 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:33:45,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:33:45,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:33:45,357 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:33:45,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 15:33:51,660 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-12-02 15:33:51,661 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:33:51,671 INFO L256 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 15:33:51,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:33:51,768 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 478 trivial. 0 not checked. [2024-12-02 15:33:51,768 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:33:52,178 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 478 trivial. 0 not checked. [2024-12-02 15:33:52,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989938927] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:33:52,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:33:52,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 32 [2024-12-02 15:33:52,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289191643] [2024-12-02 15:33:52,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:33:52,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-02 15:33:52,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:33:52,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-02 15:33:52,181 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2024-12-02 15:33:52,181 INFO L87 Difference]: Start difference. First operand 146 states and 177 transitions. Second operand has 32 states, 32 states have (on average 6.25) internal successors, (200), 32 states have internal predecessors, (200), 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) [2024-12-02 15:33:52,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:33:52,536 INFO L93 Difference]: Finished difference Result 339 states and 449 transitions. [2024-12-02 15:33:52,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-12-02 15:33:52,536 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.25) internal successors, (200), 32 states have internal predecessors, (200), 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 144 [2024-12-02 15:33:52,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:33:52,539 INFO L225 Difference]: With dead ends: 339 [2024-12-02 15:33:52,539 INFO L226 Difference]: Without dead ends: 274 [2024-12-02 15:33:52,539 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2024-12-02 15:33:52,540 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 324 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:33:52,540 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 108 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:33:52,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-12-02 15:33:52,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2024-12-02 15:33:52,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 1.2344322344322345) internal successors, (337), 273 states have internal predecessors, (337), 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) [2024-12-02 15:33:52,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 337 transitions. [2024-12-02 15:33:52,560 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 337 transitions. Word has length 144 [2024-12-02 15:33:52,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:33:52,561 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 337 transitions. [2024-12-02 15:33:52,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.25) internal successors, (200), 32 states have internal predecessors, (200), 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) [2024-12-02 15:33:52,561 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 337 transitions. [2024-12-02 15:33:52,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-12-02 15:33:52,566 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:33:52,566 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:33:52,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-12-02 15:33:52,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-12-02 15:33:52,767 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:33:52,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:33:52,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1668994097, now seen corresponding path program 6 times [2024-12-02 15:33:52,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:33:52,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945472741] [2024-12-02 15:33:52,768 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:33:52,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:33:52,834 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-12-02 15:33:52,834 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:33:53,402 INFO L134 CoverageAnalysis]: Checked inductivity of 3640 backedges. 136 proven. 146 refuted. 0 times theorem prover too weak. 3358 trivial. 0 not checked. [2024-12-02 15:33:53,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:33:53,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945472741] [2024-12-02 15:33:53,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945472741] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:33:53,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113465805] [2024-12-02 15:33:53,402 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:33:53,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:33:53,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:33:53,404 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:33:53,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 15:33:53,566 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-12-02 15:33:53,566 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:33:53,567 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 15:33:53,576 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:33:53,999 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 15:33:53,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 15 [2024-12-02 15:33:54,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3640 backedges. 165 proven. 88 refuted. 0 times theorem prover too weak. 3387 trivial. 0 not checked. [2024-12-02 15:33:54,056 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:33:54,342 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-12-02 15:33:54,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 12 [2024-12-02 15:33:54,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3640 backedges. 117 proven. 117 refuted. 0 times theorem prover too weak. 3406 trivial. 0 not checked. [2024-12-02 15:33:54,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113465805] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:33:54,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:33:54,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 10] total 20 [2024-12-02 15:33:54,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921690415] [2024-12-02 15:33:54,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:33:54,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 15:33:54,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:33:54,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 15:33:54,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2024-12-02 15:33:54,353 INFO L87 Difference]: Start difference. First operand 274 states and 337 transitions. Second operand has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 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) [2024-12-02 15:33:58,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 15:33:59,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:33:59,612 INFO L93 Difference]: Finished difference Result 615 states and 740 transitions. [2024-12-02 15:33:59,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 15:33:59,613 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 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 272 [2024-12-02 15:33:59,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:33:59,616 INFO L225 Difference]: With dead ends: 615 [2024-12-02 15:33:59,616 INFO L226 Difference]: Without dead ends: 608 [2024-12-02 15:33:59,617 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 533 SyntacticMatches, 8 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=219, Invalid=651, Unknown=0, NotChecked=0, Total=870 [2024-12-02 15:33:59,617 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 156 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 43 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:33:59,617 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 117 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 158 Invalid, 3 Unknown, 0 Unchecked, 5.1s Time] [2024-12-02 15:33:59,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2024-12-02 15:33:59,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 398. [2024-12-02 15:33:59,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 1.2418136020151134) internal successors, (493), 397 states have internal predecessors, (493), 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) [2024-12-02 15:33:59,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 493 transitions. [2024-12-02 15:33:59,647 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 493 transitions. Word has length 272 [2024-12-02 15:33:59,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:33:59,648 INFO L471 AbstractCegarLoop]: Abstraction has 398 states and 493 transitions. [2024-12-02 15:33:59,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 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) [2024-12-02 15:33:59,648 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 493 transitions. [2024-12-02 15:33:59,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-12-02 15:33:59,651 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:33:59,652 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 30, 29, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:33:59,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 15:33:59,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:33:59,852 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:33:59,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:33:59,853 INFO L85 PathProgramCache]: Analyzing trace with hash 859647471, now seen corresponding path program 1 times [2024-12-02 15:33:59,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:33:59,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998321361] [2024-12-02 15:33:59,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:33:59,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:33:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:34:00,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3640 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3540 trivial. 0 not checked. [2024-12-02 15:34:00,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:34:00,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998321361] [2024-12-02 15:34:00,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998321361] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:34:00,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855374035] [2024-12-02 15:34:00,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:34:00,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:34:00,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:34:00,362 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:34:00,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 15:34:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:34:00,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-02 15:34:00,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:34:00,639 INFO L134 CoverageAnalysis]: Checked inductivity of 3640 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3540 trivial. 0 not checked. [2024-12-02 15:34:00,639 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:34:00,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3640 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3540 trivial. 0 not checked. [2024-12-02 15:34:00,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855374035] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:34:00,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:34:00,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-12-02 15:34:00,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983242514] [2024-12-02 15:34:00,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:34:00,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-12-02 15:34:00,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:34:00,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-12-02 15:34:00,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-12-02 15:34:00,848 INFO L87 Difference]: Start difference. First operand 398 states and 493 transitions. Second operand has 25 states, 25 states have (on average 2.64) internal successors, (66), 25 states have internal predecessors, (66), 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) [2024-12-02 15:34:00,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:34:00,923 INFO L93 Difference]: Finished difference Result 797 states and 998 transitions. [2024-12-02 15:34:00,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 15:34:00,923 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.64) internal successors, (66), 25 states have internal predecessors, (66), 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 272 [2024-12-02 15:34:00,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:34:00,925 INFO L225 Difference]: With dead ends: 797 [2024-12-02 15:34:00,925 INFO L226 Difference]: Without dead ends: 422 [2024-12-02 15:34:00,927 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-12-02 15:34:00,927 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 2 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:34:00,928 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 45 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:34:00,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-12-02 15:34:00,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2024-12-02 15:34:00,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 421 states have (on average 1.2280285035629455) internal successors, (517), 421 states have internal predecessors, (517), 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) [2024-12-02 15:34:00,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 517 transitions. [2024-12-02 15:34:00,951 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 517 transitions. Word has length 272 [2024-12-02 15:34:00,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:34:00,951 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 517 transitions. [2024-12-02 15:34:00,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.64) internal successors, (66), 25 states have internal predecessors, (66), 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) [2024-12-02 15:34:00,952 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 517 transitions. [2024-12-02 15:34:00,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-12-02 15:34:00,956 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:34:00,956 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 30, 29, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:34:00,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 15:34:01,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:34:01,156 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:34:01,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:34:01,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1010658079, now seen corresponding path program 2 times [2024-12-02 15:34:01,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:34:01,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613870724] [2024-12-02 15:34:01,157 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:34:01,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:34:01,226 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:34:01,226 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:34:02,089 INFO L134 CoverageAnalysis]: Checked inductivity of 4024 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 3540 trivial. 0 not checked. [2024-12-02 15:34:02,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:34:02,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613870724] [2024-12-02 15:34:02,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613870724] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:34:02,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154503590] [2024-12-02 15:34:02,090 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:34:02,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:34:02,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:34:02,092 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:34:02,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 15:34:02,365 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:34:02,365 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:34:02,369 INFO L256 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 15:34:02,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:34:02,450 INFO L134 CoverageAnalysis]: Checked inductivity of 4024 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 3540 trivial. 0 not checked. [2024-12-02 15:34:02,450 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:34:03,122 INFO L134 CoverageAnalysis]: Checked inductivity of 4024 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 3540 trivial. 0 not checked. [2024-12-02 15:34:03,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154503590] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:34:03,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:34:03,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-12-02 15:34:03,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22874281] [2024-12-02 15:34:03,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:34:03,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-12-02 15:34:03,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:34:03,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-12-02 15:34:03,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-12-02 15:34:03,126 INFO L87 Difference]: Start difference. First operand 422 states and 517 transitions. Second operand has 49 states, 49 states have (on average 2.326530612244898) internal successors, (114), 49 states have internal predecessors, (114), 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) [2024-12-02 15:34:03,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:34:03,269 INFO L93 Difference]: Finished difference Result 845 states and 1058 transitions. [2024-12-02 15:34:03,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-12-02 15:34:03,270 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.326530612244898) internal successors, (114), 49 states have internal predecessors, (114), 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 296 [2024-12-02 15:34:03,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:34:03,272 INFO L225 Difference]: With dead ends: 845 [2024-12-02 15:34:03,272 INFO L226 Difference]: Without dead ends: 470 [2024-12-02 15:34:03,273 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 568 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-12-02 15:34:03,274 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 2 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:34:03,274 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 45 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:34:03,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2024-12-02 15:34:03,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2024-12-02 15:34:03,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 469 states have (on average 1.2046908315565032) internal successors, (565), 469 states have internal predecessors, (565), 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) [2024-12-02 15:34:03,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 565 transitions. [2024-12-02 15:34:03,298 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 565 transitions. Word has length 296 [2024-12-02 15:34:03,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:34:03,298 INFO L471 AbstractCegarLoop]: Abstraction has 470 states and 565 transitions. [2024-12-02 15:34:03,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.326530612244898) internal successors, (114), 49 states have internal predecessors, (114), 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) [2024-12-02 15:34:03,298 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 565 transitions. [2024-12-02 15:34:03,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2024-12-02 15:34:03,300 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:34:03,301 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 30, 30, 30, 30, 30, 30, 30, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:34:03,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 15:34:03,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-02 15:34:03,501 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:34:03,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:34:03,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1294218623, now seen corresponding path program 3 times [2024-12-02 15:34:03,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:34:03,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825309909] [2024-12-02 15:34:03,502 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:34:03,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:34:03,566 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-12-02 15:34:03,566 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:34:03,755 INFO L134 CoverageAnalysis]: Checked inductivity of 5656 backedges. 88 proven. 88 refuted. 0 times theorem prover too weak. 5480 trivial. 0 not checked. [2024-12-02 15:34:03,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:34:03,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825309909] [2024-12-02 15:34:03,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825309909] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:34:03,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145670458] [2024-12-02 15:34:03,756 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:34:03,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:34:03,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:34:03,758 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:34:03,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 15:34:03,963 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-12-02 15:34:03,963 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:34:03,965 INFO L256 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 15:34:03,970 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:34:04,598 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 15 treesize of output 7 [2024-12-02 15:34:04,610 INFO L134 CoverageAnalysis]: Checked inductivity of 5656 backedges. 88 proven. 88 refuted. 0 times theorem prover too weak. 5480 trivial. 0 not checked. [2024-12-02 15:34:04,610 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:34:04,781 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-12-02 15:34:04,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 12 [2024-12-02 15:34:04,880 INFO L134 CoverageAnalysis]: Checked inductivity of 5656 backedges. 117 proven. 59 refuted. 0 times theorem prover too weak. 5480 trivial. 0 not checked. [2024-12-02 15:34:04,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145670458] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:34:04,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:34:04,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-12-02 15:34:04,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907184233] [2024-12-02 15:34:04,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:34:04,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 15:34:04,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:34:04,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 15:34:04,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-12-02 15:34:04,883 INFO L87 Difference]: Start difference. First operand 470 states and 565 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) [2024-12-02 15:34:04,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:34:04,986 INFO L93 Difference]: Finished difference Result 1084 states and 1332 transitions. [2024-12-02 15:34:04,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 15:34:04,986 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 344 [2024-12-02 15:34:04,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:34:04,990 INFO L225 Difference]: With dead ends: 1084 [2024-12-02 15:34:04,990 INFO L226 Difference]: Without dead ends: 841 [2024-12-02 15:34:04,990 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 683 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2024-12-02 15:34:04,991 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 29 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:34:04,991 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 102 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:34:04,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2024-12-02 15:34:05,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 598. [2024-12-02 15:34:05,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 597 states have (on average 1.2127303182579565) internal successors, (724), 597 states have internal predecessors, (724), 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) [2024-12-02 15:34:05,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 724 transitions. [2024-12-02 15:34:05,027 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 724 transitions. Word has length 344 [2024-12-02 15:34:05,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:34:05,027 INFO L471 AbstractCegarLoop]: Abstraction has 598 states and 724 transitions. [2024-12-02 15:34:05,027 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) [2024-12-02 15:34:05,027 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 724 transitions. [2024-12-02 15:34:05,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2024-12-02 15:34:05,029 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:34:05,029 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 30, 30, 30, 30, 30, 30, 30, 28, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:34:05,038 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 15:34:05,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-12-02 15:34:05,230 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:34:05,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:34:05,231 INFO L85 PathProgramCache]: Analyzing trace with hash -2053710787, now seen corresponding path program 4 times [2024-12-02 15:34:05,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:34:05,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737337452] [2024-12-02 15:34:05,231 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:34:05,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:34:05,434 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:34:05,434 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:34:07,107 INFO L134 CoverageAnalysis]: Checked inductivity of 5656 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 3886 trivial. 0 not checked. [2024-12-02 15:34:07,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:34:07,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737337452] [2024-12-02 15:34:07,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737337452] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:34:07,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983848018] [2024-12-02 15:34:07,108 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:34:07,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:34:07,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:34:07,111 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:34:07,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 15:34:09,780 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:34:09,780 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:34:09,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-12-02 15:34:09,791 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:34:09,928 INFO L134 CoverageAnalysis]: Checked inductivity of 5656 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 3886 trivial. 0 not checked. [2024-12-02 15:34:09,928 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:34:11,076 INFO L134 CoverageAnalysis]: Checked inductivity of 5656 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 3886 trivial. 0 not checked. [2024-12-02 15:34:11,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983848018] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:34:11,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:34:11,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 64 [2024-12-02 15:34:11,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325004679] [2024-12-02 15:34:11,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:34:11,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-12-02 15:34:11,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:34:11,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-12-02 15:34:11,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2024-12-02 15:34:11,078 INFO L87 Difference]: Start difference. First operand 598 states and 724 transitions. Second operand has 64 states, 64 states have (on average 6.140625) internal successors, (393), 64 states have internal predecessors, (393), 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) [2024-12-02 15:34:12,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:34:12,139 INFO L93 Difference]: Finished difference Result 1563 states and 2071 transitions. [2024-12-02 15:34:12,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-12-02 15:34:12,140 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 6.140625) internal successors, (393), 64 states have internal predecessors, (393), 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 344 [2024-12-02 15:34:12,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:34:12,144 INFO L225 Difference]: With dead ends: 1563 [2024-12-02 15:34:12,144 INFO L226 Difference]: Without dead ends: 1304 [2024-12-02 15:34:12,145 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 657 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2024-12-02 15:34:12,146 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 707 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:34:12,146 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [707 Valid, 180 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 15:34:12,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2024-12-02 15:34:12,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1110. [2024-12-02 15:34:12,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 1109 states have (on average 1.229936880072137) internal successors, (1364), 1109 states have internal predecessors, (1364), 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) [2024-12-02 15:34:12,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1364 transitions. [2024-12-02 15:34:12,194 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1364 transitions. Word has length 344 [2024-12-02 15:34:12,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:34:12,194 INFO L471 AbstractCegarLoop]: Abstraction has 1110 states and 1364 transitions. [2024-12-02 15:34:12,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 6.140625) internal successors, (393), 64 states have internal predecessors, (393), 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) [2024-12-02 15:34:12,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1364 transitions. [2024-12-02 15:34:12,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2024-12-02 15:34:12,197 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:34:12,198 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 62, 62, 62, 62, 62, 60, 46, 46, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:34:12,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 15:34:12,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-12-02 15:34:12,398 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:34:12,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:34:12,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1205980733, now seen corresponding path program 5 times [2024-12-02 15:34:12,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:34:12,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766113409] [2024-12-02 15:34:12,399 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:34:12,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:34:15,591 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 63 check-sat command(s) [2024-12-02 15:34:15,591 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:34:19,423 INFO L134 CoverageAnalysis]: Checked inductivity of 17368 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 9742 trivial. 0 not checked. [2024-12-02 15:34:19,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:34:19,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766113409] [2024-12-02 15:34:19,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766113409] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:34:19,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473258393] [2024-12-02 15:34:19,424 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:34:19,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:34:19,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:34:19,426 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:34:19,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44e127-acc6-40b4-8798-2f6b2d7d6fc2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process