./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem03_label59.c --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_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/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_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem03_label59.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/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_069b3b22-919f-4a5e-84a9-11bda7e44277/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 2d68e7262b60a12a6597b15e2848fbc8314c4945758acd933fd69212a55e4a41 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 11:59:33,181 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 11:59:33,242 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 11:59:33,246 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 11:59:33,247 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 11:59:33,268 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 11:59:33,269 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 11:59:33,269 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 11:59:33,269 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 11:59:33,270 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 11:59:33,270 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 11:59:33,270 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 11:59:33,270 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 11:59:33,270 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 11:59:33,270 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 11:59:33,271 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 11:59:33,271 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 11:59:33,271 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 11:59:33,271 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 11:59:33,271 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 11:59:33,271 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 11:59:33,271 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 11:59:33,271 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 11:59:33,272 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 11:59:33,272 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 11:59:33,272 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 11:59:33,272 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 11:59:33,272 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 11:59:33,272 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 11:59:33,272 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:59:33,272 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:59:33,272 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:59:33,273 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:59:33,273 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 11:59:33,273 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:59:33,273 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:59:33,273 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:59:33,273 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:59:33,273 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 11:59:33,273 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 11:59:33,274 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 11:59:33,274 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 11:59:33,274 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 11:59:33,274 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 11:59:33,274 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 11:59:33,274 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 11:59:33,274 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 11:59:33,274 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 11:59:33,274 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_069b3b22-919f-4a5e-84a9-11bda7e44277/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 -> 2d68e7262b60a12a6597b15e2848fbc8314c4945758acd933fd69212a55e4a41 [2024-12-02 11:59:33,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 11:59:33,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 11:59:33,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 11:59:33,503 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 11:59:33,503 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 11:59:33,505 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/eca-rers2012/Problem03_label59.c [2024-12-02 11:59:36,150 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/data/ecb9ca1f8/aaebe5ed1dc74177aae2f6b9603d6705/FLAGbef4ca160 [2024-12-02 11:59:36,486 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 11:59:36,487 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/sv-benchmarks/c/eca-rers2012/Problem03_label59.c [2024-12-02 11:59:36,501 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/data/ecb9ca1f8/aaebe5ed1dc74177aae2f6b9603d6705/FLAGbef4ca160 [2024-12-02 11:59:36,515 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/data/ecb9ca1f8/aaebe5ed1dc74177aae2f6b9603d6705 [2024-12-02 11:59:36,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 11:59:36,518 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 11:59:36,519 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 11:59:36,519 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 11:59:36,522 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 11:59:36,523 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:59:36" (1/1) ... [2024-12-02 11:59:36,523 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eb91ac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:59:36, skipping insertion in model container [2024-12-02 11:59:36,523 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:59:36" (1/1) ... [2024-12-02 11:59:36,566 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 11:59:36,995 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_069b3b22-919f-4a5e-84a9-11bda7e44277/sv-benchmarks/c/eca-rers2012/Problem03_label59.c[57711,57724] [2024-12-02 11:59:37,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:59:37,039 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 11:59:37,248 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_069b3b22-919f-4a5e-84a9-11bda7e44277/sv-benchmarks/c/eca-rers2012/Problem03_label59.c[57711,57724] [2024-12-02 11:59:37,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:59:37,277 INFO L204 MainTranslator]: Completed translation [2024-12-02 11:59:37,278 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:59:37 WrapperNode [2024-12-02 11:59:37,278 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 11:59:37,279 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 11:59:37,279 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 11:59:37,279 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 11:59:37,286 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:59:37" (1/1) ... [2024-12-02 11:59:37,306 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:59:37" (1/1) ... [2024-12-02 11:59:37,384 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2024-12-02 11:59:37,384 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 11:59:37,385 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 11:59:37,385 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 11:59:37,385 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 11:59:37,395 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:59:37" (1/1) ... [2024-12-02 11:59:37,395 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:59:37" (1/1) ... [2024-12-02 11:59:37,407 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:59:37" (1/1) ... [2024-12-02 11:59:37,432 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 11:59:37,433 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:59:37" (1/1) ... [2024-12-02 11:59:37,433 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:59:37" (1/1) ... [2024-12-02 11:59:37,471 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:59:37" (1/1) ... [2024-12-02 11:59:37,474 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:59:37" (1/1) ... [2024-12-02 11:59:37,483 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:59:37" (1/1) ... [2024-12-02 11:59:37,491 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:59:37" (1/1) ... [2024-12-02 11:59:37,498 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:59:37" (1/1) ... [2024-12-02 11:59:37,506 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 11:59:37,506 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 11:59:37,507 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 11:59:37,507 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 11:59:37,508 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:59:37" (1/1) ... [2024-12-02 11:59:37,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:59:37,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:59:37,537 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 11:59:37,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 11:59:37,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 11:59:37,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 11:59:37,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 11:59:37,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 11:59:37,643 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 11:59:37,645 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 11:59:39,594 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-12-02 11:59:39,595 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 11:59:39,611 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 11:59:39,611 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 11:59:39,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:59:39 BoogieIcfgContainer [2024-12-02 11:59:39,612 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 11:59:39,614 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 11:59:39,614 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 11:59:39,619 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 11:59:39,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:59:36" (1/3) ... [2024-12-02 11:59:39,620 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db8cfdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:59:39, skipping insertion in model container [2024-12-02 11:59:39,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:59:37" (2/3) ... [2024-12-02 11:59:39,620 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db8cfdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:59:39, skipping insertion in model container [2024-12-02 11:59:39,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:59:39" (3/3) ... [2024-12-02 11:59:39,622 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem03_label59.c [2024-12-02 11:59:39,638 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 11:59:39,641 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem03_label59.c that has 1 procedures, 302 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 11:59:39,706 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:59:39,718 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;@2dd35934, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:59:39,718 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 11:59:39,723 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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 11:59:39,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-12-02 11:59:39,734 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:59:39,735 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:59:39,735 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:59:39,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:59:39,740 INFO L85 PathProgramCache]: Analyzing trace with hash -825651366, now seen corresponding path program 1 times [2024-12-02 11:59:39,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:59:39,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465338859] [2024-12-02 11:59:39,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:59:39,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:59:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:59:40,537 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 11:59:40,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:59:40,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465338859] [2024-12-02 11:59:40,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465338859] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:59:40,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:59:40,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 11:59:40,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810453204] [2024-12-02 11:59:40,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:59:40,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:59:40,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:59:40,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:59:40,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:59:40,570 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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 58.0) internal successors, (174), 2 states have internal predecessors, (174), 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 11:59:41,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:59:41,541 INFO L93 Difference]: Finished difference Result 864 states and 1514 transitions. [2024-12-02 11:59:41,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:59:41,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 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 174 [2024-12-02 11:59:41,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:59:41,551 INFO L225 Difference]: With dead ends: 864 [2024-12-02 11:59:41,551 INFO L226 Difference]: Without dead ends: 468 [2024-12-02 11:59:41,554 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 11:59:41,557 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 104 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 11:59:41,557 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 167 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 11:59:41,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2024-12-02 11:59:41,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 454. [2024-12-02 11:59:41,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 1.6269315673289184) internal successors, (737), 453 states have internal predecessors, (737), 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 11:59:41,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 737 transitions. [2024-12-02 11:59:41,623 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 737 transitions. Word has length 174 [2024-12-02 11:59:41,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:59:41,624 INFO L471 AbstractCegarLoop]: Abstraction has 454 states and 737 transitions. [2024-12-02 11:59:41,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 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 11:59:41,624 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 737 transitions. [2024-12-02 11:59:41,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-12-02 11:59:41,627 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:59:41,628 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:59:41,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 11:59:41,628 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:59:41,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:59:41,629 INFO L85 PathProgramCache]: Analyzing trace with hash -206951382, now seen corresponding path program 1 times [2024-12-02 11:59:41,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:59:41,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242587491] [2024-12-02 11:59:41,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:59:41,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:59:41,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:59:42,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:59:42,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:59:42,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242587491] [2024-12-02 11:59:42,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242587491] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:59:42,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:59:42,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 11:59:42,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773487864] [2024-12-02 11:59:42,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:59:42,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:59:42,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:59:42,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:59:42,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:59:42,026 INFO L87 Difference]: Start difference. First operand 454 states and 737 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 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 11:59:42,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:59:42,848 INFO L93 Difference]: Finished difference Result 1330 states and 2169 transitions. [2024-12-02 11:59:42,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:59:42,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 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 179 [2024-12-02 11:59:42,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:59:42,852 INFO L225 Difference]: With dead ends: 1330 [2024-12-02 11:59:42,852 INFO L226 Difference]: Without dead ends: 878 [2024-12-02 11:59:42,853 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 11:59:42,853 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 251 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 11:59:42,854 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 163 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 11:59:42,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2024-12-02 11:59:42,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 874. [2024-12-02 11:59:42,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 873 states have (on average 1.52233676975945) internal successors, (1329), 873 states have internal predecessors, (1329), 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 11:59:42,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1329 transitions. [2024-12-02 11:59:42,884 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1329 transitions. Word has length 179 [2024-12-02 11:59:42,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:59:42,884 INFO L471 AbstractCegarLoop]: Abstraction has 874 states and 1329 transitions. [2024-12-02 11:59:42,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 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 11:59:42,884 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1329 transitions. [2024-12-02 11:59:42,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-12-02 11:59:42,887 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:59:42,888 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:59:42,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 11:59:42,888 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:59:42,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:59:42,889 INFO L85 PathProgramCache]: Analyzing trace with hash -834312519, now seen corresponding path program 1 times [2024-12-02 11:59:42,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:59:42,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651472465] [2024-12-02 11:59:42,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:59:42,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:59:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:59:43,095 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:59:43,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:59:43,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651472465] [2024-12-02 11:59:43,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651472465] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:59:43,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:59:43,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 11:59:43,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71127279] [2024-12-02 11:59:43,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:59:43,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:59:43,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:59:43,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:59:43,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:59:43,098 INFO L87 Difference]: Start difference. First operand 874 states and 1329 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 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 11:59:44,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:59:44,053 INFO L93 Difference]: Finished difference Result 2575 states and 3935 transitions. [2024-12-02 11:59:44,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:59:44,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 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 182 [2024-12-02 11:59:44,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:59:44,063 INFO L225 Difference]: With dead ends: 2575 [2024-12-02 11:59:44,063 INFO L226 Difference]: Without dead ends: 1703 [2024-12-02 11:59:44,064 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 11:59:44,065 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 11:59:44,065 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 90 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 11:59:44,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2024-12-02 11:59:44,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1687. [2024-12-02 11:59:44,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1686 states have (on average 1.4994068801897984) internal successors, (2528), 1686 states have internal predecessors, (2528), 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 11:59:44,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2528 transitions. [2024-12-02 11:59:44,116 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2528 transitions. Word has length 182 [2024-12-02 11:59:44,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:59:44,116 INFO L471 AbstractCegarLoop]: Abstraction has 1687 states and 2528 transitions. [2024-12-02 11:59:44,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 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 11:59:44,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2528 transitions. [2024-12-02 11:59:44,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-12-02 11:59:44,121 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:59:44,121 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:59:44,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 11:59:44,122 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:59:44,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:59:44,122 INFO L85 PathProgramCache]: Analyzing trace with hash 994201524, now seen corresponding path program 1 times [2024-12-02 11:59:44,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:59:44,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199260880] [2024-12-02 11:59:44,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:59:44,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:59:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:59:44,522 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:59:44,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:59:44,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199260880] [2024-12-02 11:59:44,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199260880] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:59:44,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:59:44,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 11:59:44,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474743054] [2024-12-02 11:59:44,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:59:44,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:59:44,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:59:44,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:59:44,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:59:44,525 INFO L87 Difference]: Start difference. First operand 1687 states and 2528 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 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 11:59:45,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:59:45,425 INFO L93 Difference]: Finished difference Result 4194 states and 6266 transitions. [2024-12-02 11:59:45,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:59:45,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 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 184 [2024-12-02 11:59:45,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:59:45,435 INFO L225 Difference]: With dead ends: 4194 [2024-12-02 11:59:45,435 INFO L226 Difference]: Without dead ends: 2509 [2024-12-02 11:59:45,437 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 11:59:45,438 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 236 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 11:59:45,438 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 113 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 11:59:45,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2509 states. [2024-12-02 11:59:45,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2509 to 2508. [2024-12-02 11:59:45,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2508 states, 2507 states have (on average 1.4670921420023932) internal successors, (3678), 2507 states have internal predecessors, (3678), 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 11:59:45,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2508 states to 2508 states and 3678 transitions. [2024-12-02 11:59:45,529 INFO L78 Accepts]: Start accepts. Automaton has 2508 states and 3678 transitions. Word has length 184 [2024-12-02 11:59:45,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:59:45,529 INFO L471 AbstractCegarLoop]: Abstraction has 2508 states and 3678 transitions. [2024-12-02 11:59:45,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 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 11:59:45,530 INFO L276 IsEmpty]: Start isEmpty. Operand 2508 states and 3678 transitions. [2024-12-02 11:59:45,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-12-02 11:59:45,535 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:59:45,535 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:59:45,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 11:59:45,535 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:59:45,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:59:45,536 INFO L85 PathProgramCache]: Analyzing trace with hash 2049388324, now seen corresponding path program 1 times [2024-12-02 11:59:45,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:59:45,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430684096] [2024-12-02 11:59:45,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:59:45,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:59:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:59:46,022 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:59:46,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:59:46,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430684096] [2024-12-02 11:59:46,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430684096] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:59:46,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264951834] [2024-12-02 11:59:46,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:59:46,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:59:46,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:59:46,026 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:59:46,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 11:59:46,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:59:46,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 11:59:46,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:59:46,510 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 11:59:46,510 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:59:46,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264951834] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:59:46,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:59:46,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-12-02 11:59:46,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092197058] [2024-12-02 11:59:46,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:59:46,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:59:46,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:59:46,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:59:46,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:59:46,512 INFO L87 Difference]: Start difference. First operand 2508 states and 3678 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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 11:59:47,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:59:47,481 INFO L93 Difference]: Finished difference Result 7453 states and 10941 transitions. [2024-12-02 11:59:47,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:59:47,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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 189 [2024-12-02 11:59:47,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:59:47,496 INFO L225 Difference]: With dead ends: 7453 [2024-12-02 11:59:47,496 INFO L226 Difference]: Without dead ends: 4947 [2024-12-02 11:59:47,500 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:59:47,501 INFO L435 NwaCegarLoop]: 400 mSDtfsCounter, 58 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 11:59:47,501 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 429 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 11:59:47,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4947 states. [2024-12-02 11:59:47,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4947 to 4133. [2024-12-02 11:59:47,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4133 states, 4132 states have (on average 1.334220716360116) internal successors, (5513), 4132 states have internal predecessors, (5513), 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 11:59:47,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4133 states to 4133 states and 5513 transitions. [2024-12-02 11:59:47,601 INFO L78 Accepts]: Start accepts. Automaton has 4133 states and 5513 transitions. Word has length 189 [2024-12-02 11:59:47,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:59:47,602 INFO L471 AbstractCegarLoop]: Abstraction has 4133 states and 5513 transitions. [2024-12-02 11:59:47,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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 11:59:47,602 INFO L276 IsEmpty]: Start isEmpty. Operand 4133 states and 5513 transitions. [2024-12-02 11:59:47,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-12-02 11:59:47,610 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:59:47,610 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:59:47,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 11:59:47,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:59:47,811 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:59:47,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:59:47,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1197556103, now seen corresponding path program 1 times [2024-12-02 11:59:47,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:59:47,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822967735] [2024-12-02 11:59:47,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:59:47,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:59:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:59:48,075 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:59:48,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:59:48,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822967735] [2024-12-02 11:59:48,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822967735] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:59:48,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:59:48,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 11:59:48,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403426996] [2024-12-02 11:59:48,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:59:48,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:59:48,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:59:48,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:59:48,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:59:48,077 INFO L87 Difference]: Start difference. First operand 4133 states and 5513 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 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 11:59:48,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:59:48,922 INFO L93 Difference]: Finished difference Result 10700 states and 14606 transitions. [2024-12-02 11:59:48,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:59:48,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 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 193 [2024-12-02 11:59:48,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:59:48,934 INFO L225 Difference]: With dead ends: 10700 [2024-12-02 11:59:48,934 INFO L226 Difference]: Without dead ends: 6569 [2024-12-02 11:59:48,939 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 11:59:48,940 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 203 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 11:59:48,940 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 197 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 11:59:48,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6569 states. [2024-12-02 11:59:49,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6569 to 6569. [2024-12-02 11:59:49,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6569 states, 6568 states have (on average 1.2559378806333739) internal successors, (8249), 6568 states have internal predecessors, (8249), 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 11:59:49,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6569 states to 6569 states and 8249 transitions. [2024-12-02 11:59:49,099 INFO L78 Accepts]: Start accepts. Automaton has 6569 states and 8249 transitions. Word has length 193 [2024-12-02 11:59:49,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:59:49,099 INFO L471 AbstractCegarLoop]: Abstraction has 6569 states and 8249 transitions. [2024-12-02 11:59:49,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 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 11:59:49,100 INFO L276 IsEmpty]: Start isEmpty. Operand 6569 states and 8249 transitions. [2024-12-02 11:59:49,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-12-02 11:59:49,110 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:59:49,110 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:59:49,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 11:59:49,111 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:59:49,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:59:49,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1060550128, now seen corresponding path program 1 times [2024-12-02 11:59:49,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:59:49,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937077615] [2024-12-02 11:59:49,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:59:49,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:59:49,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:59:49,341 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 11:59:49,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:59:49,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937077615] [2024-12-02 11:59:49,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937077615] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:59:49,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:59:49,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 11:59:49,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688018906] [2024-12-02 11:59:49,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:59:49,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:59:49,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:59:49,343 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:59:49,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:59:49,343 INFO L87 Difference]: Start difference. First operand 6569 states and 8249 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 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 11:59:50,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:59:50,134 INFO L93 Difference]: Finished difference Result 19653 states and 24679 transitions. [2024-12-02 11:59:50,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:59:50,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 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 216 [2024-12-02 11:59:50,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:59:50,164 INFO L225 Difference]: With dead ends: 19653 [2024-12-02 11:59:50,164 INFO L226 Difference]: Without dead ends: 13086 [2024-12-02 11:59:50,169 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 11:59:50,169 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 234 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 11:59:50,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 205 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 11:59:50,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13086 states. [2024-12-02 11:59:50,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13086 to 12880. [2024-12-02 11:59:50,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12880 states, 12879 states have (on average 1.2247068871806817) internal successors, (15773), 12879 states have internal predecessors, (15773), 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 11:59:50,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12880 states to 12880 states and 15773 transitions. [2024-12-02 11:59:50,375 INFO L78 Accepts]: Start accepts. Automaton has 12880 states and 15773 transitions. Word has length 216 [2024-12-02 11:59:50,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:59:50,376 INFO L471 AbstractCegarLoop]: Abstraction has 12880 states and 15773 transitions. [2024-12-02 11:59:50,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 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 11:59:50,376 INFO L276 IsEmpty]: Start isEmpty. Operand 12880 states and 15773 transitions. [2024-12-02 11:59:50,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-12-02 11:59:50,395 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:59:50,395 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:59:50,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 11:59:50,396 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:59:50,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:59:50,396 INFO L85 PathProgramCache]: Analyzing trace with hash -2047108928, now seen corresponding path program 1 times [2024-12-02 11:59:50,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:59:50,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921710787] [2024-12-02 11:59:50,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:59:50,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:59:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:59:50,923 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 61 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 11:59:50,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:59:50,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921710787] [2024-12-02 11:59:50,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921710787] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:59:50,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208279437] [2024-12-02 11:59:50,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:59:50,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:59:50,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:59:50,926 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:59:50,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 11:59:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:59:51,155 INFO L256 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 11:59:51,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:59:51,392 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 11:59:51,392 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:59:51,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208279437] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:59:51,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:59:51,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-12-02 11:59:51,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722164853] [2024-12-02 11:59:51,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:59:51,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:59:51,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:59:51,394 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:59:51,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:59:51,394 INFO L87 Difference]: Start difference. First operand 12880 states and 15773 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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 11:59:52,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:59:52,075 INFO L93 Difference]: Finished difference Result 25761 states and 31549 transitions. [2024-12-02 11:59:52,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:59:52,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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 232 [2024-12-02 11:59:52,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:59:52,114 INFO L225 Difference]: With dead ends: 25761 [2024-12-02 11:59:52,114 INFO L226 Difference]: Without dead ends: 12883 [2024-12-02 11:59:52,122 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:59:52,122 INFO L435 NwaCegarLoop]: 321 mSDtfsCounter, 97 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 11:59:52,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 342 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 11:59:52,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12883 states. [2024-12-02 11:59:52,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12883 to 12474. [2024-12-02 11:59:52,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12474 states, 12473 states have (on average 1.1990699911809508) internal successors, (14956), 12473 states have internal predecessors, (14956), 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 11:59:52,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12474 states to 12474 states and 14956 transitions. [2024-12-02 11:59:52,257 INFO L78 Accepts]: Start accepts. Automaton has 12474 states and 14956 transitions. Word has length 232 [2024-12-02 11:59:52,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:59:52,257 INFO L471 AbstractCegarLoop]: Abstraction has 12474 states and 14956 transitions. [2024-12-02 11:59:52,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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 11:59:52,259 INFO L276 IsEmpty]: Start isEmpty. Operand 12474 states and 14956 transitions. [2024-12-02 11:59:52,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-12-02 11:59:52,268 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:59:52,268 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:59:52,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 11:59:52,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-12-02 11:59:52,469 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:59:52,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:59:52,469 INFO L85 PathProgramCache]: Analyzing trace with hash -2143537173, now seen corresponding path program 1 times [2024-12-02 11:59:52,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:59:52,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819187036] [2024-12-02 11:59:52,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:59:52,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:59:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:59:52,792 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:59:52,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:59:52,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819187036] [2024-12-02 11:59:52,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819187036] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:59:52,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:59:52,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 11:59:52,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661694848] [2024-12-02 11:59:52,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:59:52,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:59:52,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:59:52,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:59:52,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:59:52,794 INFO L87 Difference]: Start difference. First operand 12474 states and 14956 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 2 states have internal predecessors, (237), 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 11:59:53,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:59:53,618 INFO L93 Difference]: Finished difference Result 30672 states and 36728 transitions. [2024-12-02 11:59:53,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:59:53,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 2 states have internal predecessors, (237), 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 237 [2024-12-02 11:59:53,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:59:53,660 INFO L225 Difference]: With dead ends: 30672 [2024-12-02 11:59:53,660 INFO L226 Difference]: Without dead ends: 18200 [2024-12-02 11:59:53,672 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 11:59:53,672 INFO L435 NwaCegarLoop]: 215 mSDtfsCounter, 178 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 11:59:53,673 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 239 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 11:59:53,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18200 states. [2024-12-02 11:59:53,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18200 to 17781. [2024-12-02 11:59:53,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17781 states, 17780 states have (on average 1.1845894263217098) internal successors, (21062), 17780 states have internal predecessors, (21062), 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 11:59:53,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17781 states to 17781 states and 21062 transitions. [2024-12-02 11:59:53,849 INFO L78 Accepts]: Start accepts. Automaton has 17781 states and 21062 transitions. Word has length 237 [2024-12-02 11:59:53,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:59:53,850 INFO L471 AbstractCegarLoop]: Abstraction has 17781 states and 21062 transitions. [2024-12-02 11:59:53,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 2 states have internal predecessors, (237), 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 11:59:53,850 INFO L276 IsEmpty]: Start isEmpty. Operand 17781 states and 21062 transitions. [2024-12-02 11:59:53,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-12-02 11:59:53,892 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:59:53,892 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:59:53,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 11:59:53,892 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:59:53,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:59:53,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1034818336, now seen corresponding path program 1 times [2024-12-02 11:59:53,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:59:53,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567851632] [2024-12-02 11:59:53,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:59:53,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:59:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:59:54,291 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 69 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:59:54,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:59:54,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567851632] [2024-12-02 11:59:54,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567851632] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:59:54,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047288431] [2024-12-02 11:59:54,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:59:54,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:59:54,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:59:54,294 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:59:54,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 11:59:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:59:54,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 11:59:54,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:59:54,768 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:59:54,768 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:59:54,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047288431] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:59:54,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:59:54,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-12-02 11:59:54,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979523236] [2024-12-02 11:59:54,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:59:54,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:59:54,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:59:54,770 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:59:54,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:59:54,770 INFO L87 Difference]: Start difference. First operand 17781 states and 21062 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 11:59:55,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:59:55,503 INFO L93 Difference]: Finished difference Result 41247 states and 48440 transitions. [2024-12-02 11:59:55,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:59:55,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 244 [2024-12-02 11:59:55,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:59:55,537 INFO L225 Difference]: With dead ends: 41247 [2024-12-02 11:59:55,537 INFO L226 Difference]: Without dead ends: 23468 [2024-12-02 11:59:55,549 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:59:55,550 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 148 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 11:59:55,550 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 199 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 11:59:55,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23468 states. [2024-12-02 11:59:55,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23468 to 23262. [2024-12-02 11:59:55,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23262 states, 23261 states have (on average 1.1604832122436697) internal successors, (26994), 23261 states have internal predecessors, (26994), 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 11:59:55,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23262 states to 23262 states and 26994 transitions. [2024-12-02 11:59:55,785 INFO L78 Accepts]: Start accepts. Automaton has 23262 states and 26994 transitions. Word has length 244 [2024-12-02 11:59:55,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:59:55,785 INFO L471 AbstractCegarLoop]: Abstraction has 23262 states and 26994 transitions. [2024-12-02 11:59:55,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 11:59:55,786 INFO L276 IsEmpty]: Start isEmpty. Operand 23262 states and 26994 transitions. [2024-12-02 11:59:55,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2024-12-02 11:59:55,799 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:59:55,799 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:59:55,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 11:59:55,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-02 11:59:56,000 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:59:56,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:59:56,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1247796774, now seen corresponding path program 1 times [2024-12-02 11:59:56,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:59:56,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015539480] [2024-12-02 11:59:56,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:59:56,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:59:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:59:56,338 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:59:56,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:59:56,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015539480] [2024-12-02 11:59:56,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015539480] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:59:56,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340946826] [2024-12-02 11:59:56,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:59:56,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:59:56,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:59:56,341 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:59:56,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 11:59:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:59:56,519 INFO L256 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 11:59:56,523 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:59:56,723 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:59:56,724 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:59:56,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340946826] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:59:56,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:59:56,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-12-02 11:59:56,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443875393] [2024-12-02 11:59:56,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:59:56,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:59:56,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:59:56,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:59:56,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:59:56,725 INFO L87 Difference]: Start difference. First operand 23262 states and 26994 transitions. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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 11:59:57,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:59:57,630 INFO L93 Difference]: Finished difference Result 44715 states and 52020 transitions. [2024-12-02 11:59:57,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:59:57,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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 248 [2024-12-02 11:59:57,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:59:57,653 INFO L225 Difference]: With dead ends: 44715 [2024-12-02 11:59:57,653 INFO L226 Difference]: Without dead ends: 21658 [2024-12-02 11:59:57,666 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:59:57,666 INFO L435 NwaCegarLoop]: 348 mSDtfsCounter, 64 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 11:59:57,667 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 370 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 11:59:57,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21658 states. [2024-12-02 11:59:57,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21658 to 21638. [2024-12-02 11:59:57,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21638 states, 21637 states have (on average 1.1557979387160882) internal successors, (25008), 21637 states have internal predecessors, (25008), 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 11:59:57,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21638 states to 21638 states and 25008 transitions. [2024-12-02 11:59:57,948 INFO L78 Accepts]: Start accepts. Automaton has 21638 states and 25008 transitions. Word has length 248 [2024-12-02 11:59:57,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:59:57,949 INFO L471 AbstractCegarLoop]: Abstraction has 21638 states and 25008 transitions. [2024-12-02 11:59:57,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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 11:59:57,949 INFO L276 IsEmpty]: Start isEmpty. Operand 21638 states and 25008 transitions. [2024-12-02 11:59:57,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-12-02 11:59:57,967 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:59:57,967 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:59:57,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 11:59:58,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-12-02 11:59:58,168 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:59:58,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:59:58,169 INFO L85 PathProgramCache]: Analyzing trace with hash 416577357, now seen corresponding path program 1 times [2024-12-02 11:59:58,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:59:58,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276646291] [2024-12-02 11:59:58,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:59:58,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:59:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:59:58,486 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 86 proven. 6 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-12-02 11:59:58,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:59:58,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276646291] [2024-12-02 11:59:58,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276646291] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:59:58,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167147188] [2024-12-02 11:59:58,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:59:58,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:59:58,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:59:58,488 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:59:58,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 11:59:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:59:58,650 INFO L256 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 11:59:58,653 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:59:58,805 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-12-02 11:59:58,805 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:59:58,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167147188] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:59:58,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:59:58,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-12-02 11:59:58,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675994605] [2024-12-02 11:59:58,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:59:58,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:59:58,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:59:58,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:59:58,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:59:58,807 INFO L87 Difference]: Start difference. First operand 21638 states and 25008 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 11:59:59,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:59:59,601 INFO L93 Difference]: Finished difference Result 55072 states and 63925 transitions. [2024-12-02 11:59:59,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:59:59,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 262 [2024-12-02 11:59:59,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:59:59,628 INFO L225 Difference]: With dead ends: 55072 [2024-12-02 11:59:59,628 INFO L226 Difference]: Without dead ends: 33639 [2024-12-02 11:59:59,641 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:59:59,641 INFO L435 NwaCegarLoop]: 361 mSDtfsCounter, 79 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 11:59:59,642 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 391 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 11:59:59,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33639 states. [2024-12-02 11:59:59,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33639 to 32006. [2024-12-02 11:59:59,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32006 states, 32005 states have (on average 1.147820653022965) internal successors, (36736), 32005 states have internal predecessors, (36736), 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 12:00:00,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32006 states to 32006 states and 36736 transitions. [2024-12-02 12:00:00,019 INFO L78 Accepts]: Start accepts. Automaton has 32006 states and 36736 transitions. Word has length 262 [2024-12-02 12:00:00,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:00:00,019 INFO L471 AbstractCegarLoop]: Abstraction has 32006 states and 36736 transitions. [2024-12-02 12:00:00,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 12:00:00,019 INFO L276 IsEmpty]: Start isEmpty. Operand 32006 states and 36736 transitions. [2024-12-02 12:00:00,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-12-02 12:00:00,038 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:00:00,039 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:00:00,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 12:00:00,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-12-02 12:00:00,239 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:00:00,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:00:00,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1658340997, now seen corresponding path program 1 times [2024-12-02 12:00:00,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:00:00,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800617617] [2024-12-02 12:00:00,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:00:00,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:00:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:00:00,565 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 98 proven. 6 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-12-02 12:00:00,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:00:00,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800617617] [2024-12-02 12:00:00,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800617617] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:00:00,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604398700] [2024-12-02 12:00:00,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:00:00,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:00:00,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:00:00,567 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:00:00,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 12:00:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:00:00,739 INFO L256 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:00:00,742 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:00:00,798 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-12-02 12:00:00,798 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:00:00,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604398700] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:00:00,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:00:00,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-12-02 12:00:00,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355351582] [2024-12-02 12:00:00,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:00:00,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:00:00,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:00:00,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:00:00,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:00:00,800 INFO L87 Difference]: Start difference. First operand 32006 states and 36736 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 2 states have internal predecessors, (211), 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 12:00:01,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:00:01,355 INFO L93 Difference]: Finished difference Result 60316 states and 69479 transitions. [2024-12-02 12:00:01,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:00:01,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 2 states have internal predecessors, (211), 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 274 [2024-12-02 12:00:01,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:00:01,384 INFO L225 Difference]: With dead ends: 60316 [2024-12-02 12:00:01,384 INFO L226 Difference]: Without dead ends: 28515 [2024-12-02 12:00:01,398 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:00:01,398 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 308 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 12:00:01,399 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 31 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 12:00:01,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28515 states. [2024-12-02 12:00:01,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28515 to 28515. [2024-12-02 12:00:01,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28515 states, 28514 states have (on average 1.1483832503331697) internal successors, (32745), 28514 states have internal predecessors, (32745), 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 12:00:01,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28515 states to 28515 states and 32745 transitions. [2024-12-02 12:00:01,820 INFO L78 Accepts]: Start accepts. Automaton has 28515 states and 32745 transitions. Word has length 274 [2024-12-02 12:00:01,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:00:01,821 INFO L471 AbstractCegarLoop]: Abstraction has 28515 states and 32745 transitions. [2024-12-02 12:00:01,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 2 states have internal predecessors, (211), 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 12:00:01,821 INFO L276 IsEmpty]: Start isEmpty. Operand 28515 states and 32745 transitions. [2024-12-02 12:00:01,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-12-02 12:00:01,842 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:00:01,842 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:00:01,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 12:00:02,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:00:02,043 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:00:02,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:00:02,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1175073356, now seen corresponding path program 1 times [2024-12-02 12:00:02,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:00:02,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321751883] [2024-12-02 12:00:02,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:00:02,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:00:02,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:00:02,363 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:00:02,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:00:02,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321751883] [2024-12-02 12:00:02,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321751883] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:00:02,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:00:02,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:00:02,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962413496] [2024-12-02 12:00:02,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:00:02,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:00:02,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:00:02,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:00:02,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:00:02,365 INFO L87 Difference]: Start difference. First operand 28515 states and 32745 transitions. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 2 states have internal predecessors, (304), 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 12:00:03,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:00:03,187 INFO L93 Difference]: Finished difference Result 61109 states and 70219 transitions. [2024-12-02 12:00:03,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:00:03,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 2 states have internal predecessors, (304), 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 304 [2024-12-02 12:00:03,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:00:03,212 INFO L225 Difference]: With dead ends: 61109 [2024-12-02 12:00:03,212 INFO L226 Difference]: Without dead ends: 32799 [2024-12-02 12:00:03,226 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 12:00:03,227 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 87 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 12:00:03,227 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 131 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 12:00:03,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32799 states. [2024-12-02 12:00:03,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32799 to 32372. [2024-12-02 12:00:03,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32372 states, 32371 states have (on average 1.1325569182292794) internal successors, (36662), 32371 states have internal predecessors, (36662), 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 12:00:03,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32372 states to 32372 states and 36662 transitions. [2024-12-02 12:00:03,519 INFO L78 Accepts]: Start accepts. Automaton has 32372 states and 36662 transitions. Word has length 304 [2024-12-02 12:00:03,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:00:03,519 INFO L471 AbstractCegarLoop]: Abstraction has 32372 states and 36662 transitions. [2024-12-02 12:00:03,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 2 states have internal predecessors, (304), 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 12:00:03,519 INFO L276 IsEmpty]: Start isEmpty. Operand 32372 states and 36662 transitions. [2024-12-02 12:00:03,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2024-12-02 12:00:03,534 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:00:03,534 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:00:03,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 12:00:03,534 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:00:03,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:00:03,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1218688759, now seen corresponding path program 1 times [2024-12-02 12:00:03,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:00:03,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519594869] [2024-12-02 12:00:03,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:00:03,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:00:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:00:03,945 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 136 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:00:03,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:00:03,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519594869] [2024-12-02 12:00:03,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519594869] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:00:03,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272684215] [2024-12-02 12:00:03,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:00:03,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:00:03,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:00:03,947 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:00:03,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 12:00:04,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:00:04,107 INFO L256 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:00:04,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:00:04,415 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:00:04,416 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:00:04,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272684215] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:00:04,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:00:04,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-12-02 12:00:04,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682218675] [2024-12-02 12:00:04,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:00:04,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:00:04,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:00:04,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:00:04,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:00:04,417 INFO L87 Difference]: Start difference. First operand 32372 states and 36662 transitions. Second operand has 4 states, 4 states have (on average 77.75) internal successors, (311), 3 states have internal predecessors, (311), 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 12:00:05,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:00:05,489 INFO L93 Difference]: Finished difference Result 70237 states and 79919 transitions. [2024-12-02 12:00:05,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:00:05,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.75) internal successors, (311), 3 states have internal predecessors, (311), 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 311 [2024-12-02 12:00:05,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:00:05,518 INFO L225 Difference]: With dead ends: 70237 [2024-12-02 12:00:05,518 INFO L226 Difference]: Without dead ends: 37867 [2024-12-02 12:00:05,533 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:00:05,534 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 325 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 12:00:05,534 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 122 Invalid, 1306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1181 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 12:00:05,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37867 states. [2024-12-02 12:00:05,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37867 to 33579. [2024-12-02 12:00:05,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33579 states, 33578 states have (on average 1.1076597772350945) internal successors, (37193), 33578 states have internal predecessors, (37193), 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 12:00:05,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33579 states to 33579 states and 37193 transitions. [2024-12-02 12:00:05,889 INFO L78 Accepts]: Start accepts. Automaton has 33579 states and 37193 transitions. Word has length 311 [2024-12-02 12:00:05,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:00:05,889 INFO L471 AbstractCegarLoop]: Abstraction has 33579 states and 37193 transitions. [2024-12-02 12:00:05,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.75) internal successors, (311), 3 states have internal predecessors, (311), 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 12:00:05,889 INFO L276 IsEmpty]: Start isEmpty. Operand 33579 states and 37193 transitions. [2024-12-02 12:00:05,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2024-12-02 12:00:05,903 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:00:05,904 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:00:05,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 12:00:06,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-02 12:00:06,104 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:00:06,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:00:06,105 INFO L85 PathProgramCache]: Analyzing trace with hash 56649622, now seen corresponding path program 1 times [2024-12-02 12:00:06,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:00:06,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315940604] [2024-12-02 12:00:06,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:00:06,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:00:06,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:00:06,367 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 12:00:06,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:00:06,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315940604] [2024-12-02 12:00:06,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315940604] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:00:06,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:00:06,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:00:06,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039712845] [2024-12-02 12:00:06,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:00:06,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:00:06,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:00:06,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:00:06,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:00:06,369 INFO L87 Difference]: Start difference. First operand 33579 states and 37193 transitions. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 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 12:00:07,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:00:07,142 INFO L93 Difference]: Finished difference Result 64919 states and 71803 transitions. [2024-12-02 12:00:07,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:00:07,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 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 319 [2024-12-02 12:00:07,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:00:07,171 INFO L225 Difference]: With dead ends: 64919 [2024-12-02 12:00:07,171 INFO L226 Difference]: Without dead ends: 31342 [2024-12-02 12:00:07,188 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 12:00:07,189 INFO L435 NwaCegarLoop]: 291 mSDtfsCounter, 119 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 12:00:07,189 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 307 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 12:00:07,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31342 states. [2024-12-02 12:00:07,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31342 to 29715. [2024-12-02 12:00:07,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29715 states, 29714 states have (on average 1.0825200242310022) internal successors, (32166), 29714 states have internal predecessors, (32166), 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 12:00:07,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29715 states to 29715 states and 32166 transitions. [2024-12-02 12:00:07,526 INFO L78 Accepts]: Start accepts. Automaton has 29715 states and 32166 transitions. Word has length 319 [2024-12-02 12:00:07,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:00:07,527 INFO L471 AbstractCegarLoop]: Abstraction has 29715 states and 32166 transitions. [2024-12-02 12:00:07,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 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 12:00:07,527 INFO L276 IsEmpty]: Start isEmpty. Operand 29715 states and 32166 transitions. [2024-12-02 12:00:07,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2024-12-02 12:00:07,540 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:00:07,541 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:00:07,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 12:00:07,541 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:00:07,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:00:07,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1047102222, now seen corresponding path program 1 times [2024-12-02 12:00:07,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:00:07,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80850334] [2024-12-02 12:00:07,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:00:07,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:00:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:00:07,844 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 109 proven. 6 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2024-12-02 12:00:07,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:00:07,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80850334] [2024-12-02 12:00:07,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80850334] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:00:07,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333182286] [2024-12-02 12:00:07,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:00:07,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:00:07,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:00:07,847 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:00:07,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 12:00:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:00:08,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:00:08,034 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:00:08,132 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-12-02 12:00:08,132 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:00:08,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333182286] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:00:08,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:00:08,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-12-02 12:00:08,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028641502] [2024-12-02 12:00:08,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:00:08,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:00:08,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:00:08,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:00:08,134 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:00:08,134 INFO L87 Difference]: Start difference. First operand 29715 states and 32166 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 2 states have internal predecessors, (254), 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 12:00:08,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:00:08,560 INFO L93 Difference]: Finished difference Result 59426 states and 64328 transitions. [2024-12-02 12:00:08,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:00:08,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 2 states have internal predecessors, (254), 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 330 [2024-12-02 12:00:08,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:00:08,592 INFO L225 Difference]: With dead ends: 59426 [2024-12-02 12:00:08,592 INFO L226 Difference]: Without dead ends: 29713 [2024-12-02 12:00:08,605 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:00:08,605 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 275 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 12:00:08,606 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 29 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 12:00:08,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29713 states. [2024-12-02 12:00:08,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29713 to 29713. [2024-12-02 12:00:08,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29713 states, 29712 states have (on average 1.0824582660204631) internal successors, (32162), 29712 states have internal predecessors, (32162), 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 12:00:08,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29713 states to 29713 states and 32162 transitions. [2024-12-02 12:00:08,881 INFO L78 Accepts]: Start accepts. Automaton has 29713 states and 32162 transitions. Word has length 330 [2024-12-02 12:00:08,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:00:08,881 INFO L471 AbstractCegarLoop]: Abstraction has 29713 states and 32162 transitions. [2024-12-02 12:00:08,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 2 states have internal predecessors, (254), 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 12:00:08,882 INFO L276 IsEmpty]: Start isEmpty. Operand 29713 states and 32162 transitions. [2024-12-02 12:00:08,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2024-12-02 12:00:08,895 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:00:08,895 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:00:08,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 12:00:09,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 12:00:09,096 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:00:09,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:00:09,096 INFO L85 PathProgramCache]: Analyzing trace with hash 529082929, now seen corresponding path program 1 times [2024-12-02 12:00:09,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:00:09,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922177986] [2024-12-02 12:00:09,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:00:09,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:00:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:00:09,393 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 123 proven. 6 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-12-02 12:00:09,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:00:09,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922177986] [2024-12-02 12:00:09,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922177986] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:00:09,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72713099] [2024-12-02 12:00:09,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:00:09,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:00:09,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:00:09,396 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:00:09,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 12:00:09,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:00:09,568 INFO L256 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:00:09,571 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:00:09,594 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 247 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-12-02 12:00:09,594 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:00:09,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72713099] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:00:09,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:00:09,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-12-02 12:00:09,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287521901] [2024-12-02 12:00:09,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:00:09,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:00:09,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:00:09,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:00:09,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:00:09,595 INFO L87 Difference]: Start difference. First operand 29713 states and 32162 transitions. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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 12:00:09,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:00:09,979 INFO L93 Difference]: Finished difference Result 83835 states and 90755 transitions. [2024-12-02 12:00:09,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:00:09,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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 339 [2024-12-02 12:00:09,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:00:10,021 INFO L225 Difference]: With dead ends: 83835 [2024-12-02 12:00:10,022 INFO L226 Difference]: Without dead ends: 54124 [2024-12-02 12:00:10,039 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:00:10,039 INFO L435 NwaCegarLoop]: 584 mSDtfsCounter, 287 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 12:00:10,039 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 844 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 12:00:10,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54124 states. [2024-12-02 12:00:10,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54124 to 54121. [2024-12-02 12:00:10,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54121 states, 54120 states have (on average 1.0764966740576496) internal successors, (58260), 54120 states have internal predecessors, (58260), 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 12:00:10,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54121 states to 54121 states and 58260 transitions. [2024-12-02 12:00:10,688 INFO L78 Accepts]: Start accepts. Automaton has 54121 states and 58260 transitions. Word has length 339 [2024-12-02 12:00:10,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:00:10,688 INFO L471 AbstractCegarLoop]: Abstraction has 54121 states and 58260 transitions. [2024-12-02 12:00:10,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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 12:00:10,688 INFO L276 IsEmpty]: Start isEmpty. Operand 54121 states and 58260 transitions. [2024-12-02 12:00:10,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2024-12-02 12:00:10,710 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:00:10,710 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:00:10,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 12:00:10,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 12:00:10,911 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:00:10,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:00:10,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1575115250, now seen corresponding path program 1 times [2024-12-02 12:00:10,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:00:10,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196079344] [2024-12-02 12:00:10,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:00:10,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:00:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:00:11,189 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 102 proven. 6 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-12-02 12:00:11,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:00:11,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196079344] [2024-12-02 12:00:11,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196079344] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:00:11,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957805461] [2024-12-02 12:00:11,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:00:11,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:00:11,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:00:11,192 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:00:11,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 12:00:11,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:00:11,373 INFO L256 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:00:11,377 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:00:11,531 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2024-12-02 12:00:11,531 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:00:11,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957805461] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:00:11,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:00:11,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-12-02 12:00:11,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985008075] [2024-12-02 12:00:11,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:00:11,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:00:11,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:00:11,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:00:11,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:00:11,532 INFO L87 Difference]: Start difference. First operand 54121 states and 58260 transitions. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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 12:00:12,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:00:12,573 INFO L93 Difference]: Finished difference Result 102724 states and 110584 transitions. [2024-12-02 12:00:12,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:00:12,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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 341 [2024-12-02 12:00:12,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:00:12,624 INFO L225 Difference]: With dead ends: 102724 [2024-12-02 12:00:12,624 INFO L226 Difference]: Without dead ends: 48605 [2024-12-02 12:00:12,652 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:00:12,652 INFO L435 NwaCegarLoop]: 311 mSDtfsCounter, 84 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 12:00:12,653 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 327 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 12:00:12,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48605 states. [2024-12-02 12:00:13,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48605 to 46980. [2024-12-02 12:00:13,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46980 states, 46979 states have (on average 1.0603886843057537) internal successors, (49816), 46979 states have internal predecessors, (49816), 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 12:00:13,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46980 states to 46980 states and 49816 transitions. [2024-12-02 12:00:13,349 INFO L78 Accepts]: Start accepts. Automaton has 46980 states and 49816 transitions. Word has length 341 [2024-12-02 12:00:13,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:00:13,349 INFO L471 AbstractCegarLoop]: Abstraction has 46980 states and 49816 transitions. [2024-12-02 12:00:13,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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 12:00:13,349 INFO L276 IsEmpty]: Start isEmpty. Operand 46980 states and 49816 transitions. [2024-12-02 12:00:13,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2024-12-02 12:00:13,380 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:00:13,381 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:00:13,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 12:00:13,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:00:13,581 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:00:13,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:00:13,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1218723905, now seen corresponding path program 1 times [2024-12-02 12:00:13,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:00:13,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109336897] [2024-12-02 12:00:13,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:00:13,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:00:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:00:13,938 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 136 proven. 6 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-12-02 12:00:13,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:00:13,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109336897] [2024-12-02 12:00:13,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109336897] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:00:13,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222482881] [2024-12-02 12:00:13,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:00:13,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:00:13,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:00:13,940 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:00:13,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 12:00:14,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:00:14,155 INFO L256 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 12:00:14,158 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:00:14,248 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-12-02 12:00:14,249 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:00:14,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222482881] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:00:14,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:00:14,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-12-02 12:00:14,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422711034] [2024-12-02 12:00:14,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:00:14,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:00:14,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:00:14,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:00:14,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:00:14,250 INFO L87 Difference]: Start difference. First operand 46980 states and 49816 transitions. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 3 states have internal predecessors, (212), 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 12:00:15,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:00:15,336 INFO L93 Difference]: Finished difference Result 135620 states and 143852 transitions. [2024-12-02 12:00:15,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:00:15,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 3 states have internal predecessors, (212), 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 379 [2024-12-02 12:00:15,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:00:15,405 INFO L225 Difference]: With dead ends: 135620 [2024-12-02 12:00:15,405 INFO L226 Difference]: Without dead ends: 88642 [2024-12-02 12:00:15,433 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:00:15,433 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 735 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 12:00:15,433 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 311 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 12:00:15,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88642 states. [2024-12-02 12:00:16,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88642 to 86608. [2024-12-02 12:00:16,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86608 states, 86607 states have (on average 1.0604800997609893) internal successors, (91845), 86607 states have internal predecessors, (91845), 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 12:00:16,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86608 states to 86608 states and 91845 transitions. [2024-12-02 12:00:16,372 INFO L78 Accepts]: Start accepts. Automaton has 86608 states and 91845 transitions. Word has length 379 [2024-12-02 12:00:16,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:00:16,372 INFO L471 AbstractCegarLoop]: Abstraction has 86608 states and 91845 transitions. [2024-12-02 12:00:16,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 3 states have internal predecessors, (212), 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 12:00:16,372 INFO L276 IsEmpty]: Start isEmpty. Operand 86608 states and 91845 transitions. [2024-12-02 12:00:16,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2024-12-02 12:00:16,398 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:00:16,398 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:00:16,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 12:00:16,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-12-02 12:00:16,598 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:00:16,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:00:16,599 INFO L85 PathProgramCache]: Analyzing trace with hash -2066958398, now seen corresponding path program 1 times [2024-12-02 12:00:16,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:00:16,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824996374] [2024-12-02 12:00:16,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:00:16,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:00:16,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:00:16,813 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-12-02 12:00:16,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:00:16,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824996374] [2024-12-02 12:00:16,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824996374] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:00:16,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:00:16,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:00:16,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059328929] [2024-12-02 12:00:16,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:00:16,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:00:16,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:00:16,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:00:16,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:00:16,815 INFO L87 Difference]: Start difference. First operand 86608 states and 91845 transitions. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 2 states have internal predecessors, (301), 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 12:00:17,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:00:17,716 INFO L93 Difference]: Finished difference Result 253924 states and 269301 transitions. [2024-12-02 12:00:17,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:00:17,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 2 states have internal predecessors, (301), 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 380 [2024-12-02 12:00:17,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:00:17,855 INFO L225 Difference]: With dead ends: 253924 [2024-12-02 12:00:17,855 INFO L226 Difference]: Without dead ends: 167318 [2024-12-02 12:00:17,894 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 12:00:17,895 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 210 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 12:00:17,895 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 523 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 12:00:18,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167318 states. [2024-12-02 12:00:19,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167318 to 167316. [2024-12-02 12:00:20,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167316 states, 167315 states have (on average 1.060448853958103) internal successors, (177429), 167315 states have internal predecessors, (177429), 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 12:00:20,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167316 states to 167316 states and 177429 transitions. [2024-12-02 12:00:20,180 INFO L78 Accepts]: Start accepts. Automaton has 167316 states and 177429 transitions. Word has length 380 [2024-12-02 12:00:20,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:00:20,181 INFO L471 AbstractCegarLoop]: Abstraction has 167316 states and 177429 transitions. [2024-12-02 12:00:20,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 2 states have internal predecessors, (301), 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 12:00:20,181 INFO L276 IsEmpty]: Start isEmpty. Operand 167316 states and 177429 transitions. [2024-12-02 12:00:20,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2024-12-02 12:00:20,206 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:00:20,207 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:00:20,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 12:00:20,207 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:00:20,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:00:20,207 INFO L85 PathProgramCache]: Analyzing trace with hash 43010546, now seen corresponding path program 1 times [2024-12-02 12:00:20,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:00:20,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080752154] [2024-12-02 12:00:20,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:00:20,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:00:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:00:20,870 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 148 proven. 6 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-12-02 12:00:20,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:00:20,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080752154] [2024-12-02 12:00:20,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080752154] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:00:20,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295141109] [2024-12-02 12:00:20,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:00:20,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:00:20,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:00:20,872 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:00:20,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 12:00:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:00:21,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 12:00:21,081 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:00:21,269 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 207 proven. 113 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-12-02 12:00:21,269 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:00:21,477 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 207 proven. 113 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-12-02 12:00:21,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295141109] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:00:21,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:00:21,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-12-02 12:00:21,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113613265] [2024-12-02 12:00:21,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:00:21,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:00:21,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:00:21,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:00:21,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:00:21,479 INFO L87 Difference]: Start difference. First operand 167316 states and 177429 transitions. Second operand has 6 states, 6 states have (on average 59.333333333333336) internal successors, (356), 5 states have internal predecessors, (356), 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 12:00:27,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:00:27,221 INFO L93 Difference]: Finished difference Result 664073 states and 702703 transitions. [2024-12-02 12:00:27,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 12:00:27,222 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 59.333333333333336) internal successors, (356), 5 states have internal predecessors, (356), 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 382 [2024-12-02 12:00:27,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:00:28,026 INFO L225 Difference]: With dead ends: 664073 [2024-12-02 12:00:28,026 INFO L226 Difference]: Without dead ends: 484780 [2024-12-02 12:00:28,097 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 776 GetRequests, 761 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2024-12-02 12:00:28,099 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 2503 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 4684 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2503 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 5115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 4684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-12-02 12:00:28,099 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2503 Valid, 333 Invalid, 5115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 4684 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-12-02 12:00:28,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484780 states. [2024-12-02 12:00:33,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484780 to 451225. [2024-12-02 12:00:33,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451225 states, 451224 states have (on average 1.0558214988564438) internal successors, (476412), 451224 states have internal predecessors, (476412), 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 12:00:34,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451225 states to 451225 states and 476412 transitions. [2024-12-02 12:00:34,821 INFO L78 Accepts]: Start accepts. Automaton has 451225 states and 476412 transitions. Word has length 382 [2024-12-02 12:00:34,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:00:34,822 INFO L471 AbstractCegarLoop]: Abstraction has 451225 states and 476412 transitions. [2024-12-02 12:00:34,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 59.333333333333336) internal successors, (356), 5 states have internal predecessors, (356), 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 12:00:34,822 INFO L276 IsEmpty]: Start isEmpty. Operand 451225 states and 476412 transitions. [2024-12-02 12:00:34,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2024-12-02 12:00:34,926 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:00:34,926 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:00:34,933 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 12:00:35,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069b3b22-919f-4a5e-84a9-11bda7e44277/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-12-02 12:00:35,127 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:00:35,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:00:35,128 INFO L85 PathProgramCache]: Analyzing trace with hash -480376160, now seen corresponding path program 1 times [2024-12-02 12:00:35,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:00:35,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961325994] [2024-12-02 12:00:35,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:00:35,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:00:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:00:35,771 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 369 proven. 0 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2024-12-02 12:00:35,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:00:35,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961325994] [2024-12-02 12:00:35,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961325994] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:00:35,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:00:35,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:00:35,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17029654] [2024-12-02 12:00:35,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:00:35,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:00:35,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:00:35,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:00:35,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:00:35,772 INFO L87 Difference]: Start difference. First operand 451225 states and 476412 transitions. Second operand has 4 states, 4 states have (on average 68.25) internal successors, (273), 3 states have internal predecessors, (273), 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 12:00:39,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:00:39,719 INFO L93 Difference]: Finished difference Result 1030763 states and 1088238 transitions. [2024-12-02 12:00:39,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:00:39,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.25) internal successors, (273), 3 states have internal predecessors, (273), 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 483 [2024-12-02 12:00:39,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:00:40,680 INFO L225 Difference]: With dead ends: 1030763 [2024-12-02 12:00:40,681 INFO L226 Difference]: Without dead ends: 579540 [2024-12-02 12:00:40,796 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:00:40,796 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 527 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 12:00:40,797 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 49 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 12:00:41,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579540 states. [2024-12-02 12:00:46,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579540 to 362866. [2024-12-02 12:00:46,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362866 states, 362865 states have (on average 1.0559436705110716) internal successors, (383165), 362865 states have internal predecessors, (383165), 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 12:00:47,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362866 states to 362866 states and 383165 transitions. [2024-12-02 12:00:47,108 INFO L78 Accepts]: Start accepts. Automaton has 362866 states and 383165 transitions. Word has length 483 [2024-12-02 12:00:47,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:00:47,108 INFO L471 AbstractCegarLoop]: Abstraction has 362866 states and 383165 transitions. [2024-12-02 12:00:47,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.25) internal successors, (273), 3 states have internal predecessors, (273), 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 12:00:47,109 INFO L276 IsEmpty]: Start isEmpty. Operand 362866 states and 383165 transitions. [2024-12-02 12:00:47,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2024-12-02 12:00:47,504 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:00:47,504 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:00:47,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 12:00:47,504 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:00:47,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:00:47,505 INFO L85 PathProgramCache]: Analyzing trace with hash -947251325, now seen corresponding path program 1 times [2024-12-02 12:00:47,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:00:47,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360812958] [2024-12-02 12:00:47,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:00:47,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:00:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:00:47,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1084 backedges. 623 proven. 0 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2024-12-02 12:00:47,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:00:47,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360812958] [2024-12-02 12:00:47,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360812958] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:00:47,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:00:47,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:00:47,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337956937] [2024-12-02 12:00:47,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:00:47,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:00:47,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:00:47,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:00:47,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:00:47,839 INFO L87 Difference]: Start difference. First operand 362866 states and 383165 transitions. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 2 states have internal predecessors, (304), 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 12:00:51,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:00:51,448 INFO L93 Difference]: Finished difference Result 1011094 states and 1068510 transitions. [2024-12-02 12:00:51,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:00:51,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 2 states have internal predecessors, (304), 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 528 [2024-12-02 12:00:51,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:00:52,137 INFO L225 Difference]: With dead ends: 1011094 [2024-12-02 12:00:52,137 INFO L226 Difference]: Without dead ends: 648230 [2024-12-02 12:00:52,297 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 12:00:52,297 INFO L435 NwaCegarLoop]: 274 mSDtfsCounter, 198 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 12:00:52,298 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 527 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 12:00:52,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648230 states. [2024-12-02 12:01:00,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648230 to 646788. [2024-12-02 12:01:00,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646788 states, 646787 states have (on average 1.0571347290529958) internal successors, (683741), 646787 states have internal predecessors, (683741), 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 12:01:01,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646788 states to 646788 states and 683741 transitions. [2024-12-02 12:01:01,603 INFO L78 Accepts]: Start accepts. Automaton has 646788 states and 683741 transitions. Word has length 528 [2024-12-02 12:01:01,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:01:01,603 INFO L471 AbstractCegarLoop]: Abstraction has 646788 states and 683741 transitions. [2024-12-02 12:01:01,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 2 states have internal predecessors, (304), 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 12:01:01,604 INFO L276 IsEmpty]: Start isEmpty. Operand 646788 states and 683741 transitions. [2024-12-02 12:01:01,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2024-12-02 12:01:01,722 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:01:01,723 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:01:01,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 12:01:01,723 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:01:01,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:01:01,723 INFO L85 PathProgramCache]: Analyzing trace with hash -381744586, now seen corresponding path program 1 times [2024-12-02 12:01:01,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:01:01,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048900945] [2024-12-02 12:01:01,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:01:01,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:01:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:01:02,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 400 proven. 0 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2024-12-02 12:01:02,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:01:02,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048900945] [2024-12-02 12:01:02,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048900945] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:01:02,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:01:02,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:01:02,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551889739] [2024-12-02 12:01:02,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:01:02,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:01:02,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:01:02,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:01:02,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:01:02,364 INFO L87 Difference]: Start difference. First operand 646788 states and 683741 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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 12:01:07,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:01:07,073 INFO L93 Difference]: Finished difference Result 1252810 states and 1324943 transitions. [2024-12-02 12:01:07,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:01:07,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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 539 [2024-12-02 12:01:07,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:01:07,758 INFO L225 Difference]: With dead ends: 1252810 [2024-12-02 12:01:07,758 INFO L226 Difference]: Without dead ends: 606024 [2024-12-02 12:01:07,936 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 12:01:07,936 INFO L435 NwaCegarLoop]: 319 mSDtfsCounter, 135 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 12:01:07,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 335 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 12:01:08,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606024 states. [2024-12-02 12:01:15,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606024 to 603141. [2024-12-02 12:01:15,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603141 states, 603140 states have (on average 1.0557250389627615) internal successors, (636750), 603140 states have internal predecessors, (636750), 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 12:01:16,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603141 states to 603141 states and 636750 transitions. [2024-12-02 12:01:16,986 INFO L78 Accepts]: Start accepts. Automaton has 603141 states and 636750 transitions. Word has length 539 [2024-12-02 12:01:16,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:01:16,986 INFO L471 AbstractCegarLoop]: Abstraction has 603141 states and 636750 transitions. [2024-12-02 12:01:16,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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 12:01:16,987 INFO L276 IsEmpty]: Start isEmpty. Operand 603141 states and 636750 transitions. [2024-12-02 12:01:17,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2024-12-02 12:01:17,103 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:01:17,103 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:01:17,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 12:01:17,104 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:01:17,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:01:17,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1817822106, now seen corresponding path program 1 times [2024-12-02 12:01:17,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:01:17,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801763459] [2024-12-02 12:01:17,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:01:17,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:01:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:01:17,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1034 backedges. 694 proven. 0 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2024-12-02 12:01:17,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:01:17,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801763459] [2024-12-02 12:01:17,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801763459] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:01:17,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:01:17,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:01:17,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527578143] [2024-12-02 12:01:17,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:01:17,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:01:17,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:01:17,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:01:17,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:01:17,797 INFO L87 Difference]: Start difference. First operand 603141 states and 636750 transitions. Second operand has 4 states, 4 states have (on average 107.25) internal successors, (429), 3 states have internal predecessors, (429), 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 12:01:21,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:01:21,777 INFO L93 Difference]: Finished difference Result 1212238 states and 1280109 transitions. [2024-12-02 12:01:21,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:01:21,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 107.25) internal successors, (429), 3 states have internal predecessors, (429), 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 576 [2024-12-02 12:01:21,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:01:22,439 INFO L225 Difference]: With dead ends: 1212238 [2024-12-02 12:01:22,439 INFO L226 Difference]: Without dead ends: 609099 [2024-12-02 12:01:22,615 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:01:22,615 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 252 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 12:01:22,616 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 44 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 12:01:23,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609099 states. [2024-12-02 12:01:29,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609099 to 467321. [2024-12-02 12:01:29,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467321 states, 467320 states have (on average 1.056597192501926) internal successors, (493769), 467320 states have internal predecessors, (493769), 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 12:01:30,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467321 states to 467321 states and 493769 transitions. [2024-12-02 12:01:30,363 INFO L78 Accepts]: Start accepts. Automaton has 467321 states and 493769 transitions. Word has length 576 [2024-12-02 12:01:30,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:01:30,364 INFO L471 AbstractCegarLoop]: Abstraction has 467321 states and 493769 transitions. [2024-12-02 12:01:30,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.25) internal successors, (429), 3 states have internal predecessors, (429), 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 12:01:30,364 INFO L276 IsEmpty]: Start isEmpty. Operand 467321 states and 493769 transitions. [2024-12-02 12:01:30,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2024-12-02 12:01:30,429 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:01:30,429 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:01:30,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 12:01:30,430 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:01:30,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:01:30,430 INFO L85 PathProgramCache]: Analyzing trace with hash 513677880, now seen corresponding path program 1 times [2024-12-02 12:01:30,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:01:30,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494575637] [2024-12-02 12:01:30,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:01:30,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:01:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:01:31,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 500 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 12:01:31,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:01:31,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494575637] [2024-12-02 12:01:31,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494575637] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:01:31,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:01:31,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:01:31,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182617402] [2024-12-02 12:01:31,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:01:31,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:01:31,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:01:31,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:01:31,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:01:31,121 INFO L87 Difference]: Start difference. First operand 467321 states and 493769 transitions. Second operand has 4 states, 4 states have (on average 81.25) internal successors, (325), 3 states have internal predecessors, (325), 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 12:01:35,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:01:35,246 INFO L93 Difference]: Finished difference Result 1067341 states and 1126293 transitions. [2024-12-02 12:01:35,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:01:35,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 3 states have internal predecessors, (325), 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 597 [2024-12-02 12:01:35,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:01:35,861 INFO L225 Difference]: With dead ends: 1067341 [2024-12-02 12:01:35,861 INFO L226 Difference]: Without dead ends: 600022 [2024-12-02 12:01:36,004 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:01:36,004 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 481 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 12:01:36,005 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 44 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 12:01:36,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600022 states. [2024-12-02 12:01:42,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600022 to 578498. [2024-12-02 12:01:43,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578498 states, 578497 states have (on average 1.055417746332306) internal successors, (610556), 578497 states have internal predecessors, (610556), 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 12:01:43,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578498 states to 578498 states and 610556 transitions. [2024-12-02 12:01:43,967 INFO L78 Accepts]: Start accepts. Automaton has 578498 states and 610556 transitions. Word has length 597 [2024-12-02 12:01:43,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:01:43,967 INFO L471 AbstractCegarLoop]: Abstraction has 578498 states and 610556 transitions. [2024-12-02 12:01:43,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 3 states have internal predecessors, (325), 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 12:01:43,967 INFO L276 IsEmpty]: Start isEmpty. Operand 578498 states and 610556 transitions. [2024-12-02 12:01:44,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 622 [2024-12-02 12:01:44,107 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:01:44,108 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:01:44,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 12:01:44,108 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:01:44,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:01:44,109 INFO L85 PathProgramCache]: Analyzing trace with hash -37865990, now seen corresponding path program 1 times [2024-12-02 12:01:44,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:01:44,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100294265] [2024-12-02 12:01:44,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:01:44,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:01:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:01:45,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 462 proven. 0 refuted. 0 times theorem prover too weak. 1106 trivial. 0 not checked. [2024-12-02 12:01:45,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:01:45,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100294265] [2024-12-02 12:01:45,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100294265] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:01:45,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:01:45,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:01:45,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845520223] [2024-12-02 12:01:45,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:01:45,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:01:45,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:01:45,090 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:01:45,090 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:01:45,091 INFO L87 Difference]: Start difference. First operand 578498 states and 610556 transitions. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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 12:01:48,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:01:48,937 INFO L93 Difference]: Finished difference Result 1062829 states and 1121548 transitions. [2024-12-02 12:01:48,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:01:48,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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 621 [2024-12-02 12:01:48,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:01:49,508 INFO L225 Difference]: With dead ends: 1062829 [2024-12-02 12:01:49,508 INFO L226 Difference]: Without dead ends: 454288 [2024-12-02 12:01:49,712 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 12:01:49,712 INFO L435 NwaCegarLoop]: 309 mSDtfsCounter, 167 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 12:01:49,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 320 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 12:01:50,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454288 states. [2024-12-02 12:01:54,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454288 to 350470. [2024-12-02 12:01:54,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350470 states, 350469 states have (on average 1.040186150558252) internal successors, (364553), 350469 states have internal predecessors, (364553), 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 12:01:54,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350470 states to 350470 states and 364553 transitions. [2024-12-02 12:01:54,917 INFO L78 Accepts]: Start accepts. Automaton has 350470 states and 364553 transitions. Word has length 621 [2024-12-02 12:01:54,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:01:54,917 INFO L471 AbstractCegarLoop]: Abstraction has 350470 states and 364553 transitions. [2024-12-02 12:01:54,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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 12:01:54,918 INFO L276 IsEmpty]: Start isEmpty. Operand 350470 states and 364553 transitions. [2024-12-02 12:01:54,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2024-12-02 12:01:54,965 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:01:54,965 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:01:54,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-02 12:01:54,965 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:01:54,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:01:54,966 INFO L85 PathProgramCache]: Analyzing trace with hash -37123905, now seen corresponding path program 1 times [2024-12-02 12:01:54,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:01:54,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536049007] [2024-12-02 12:01:54,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:01:54,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:01:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:01:55,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1698 backedges. 598 proven. 0 refuted. 0 times theorem prover too weak. 1100 trivial. 0 not checked. [2024-12-02 12:01:55,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:01:55,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536049007] [2024-12-02 12:01:55,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536049007] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:01:55,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:01:55,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:01:55,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873640595] [2024-12-02 12:01:55,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:01:55,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:01:55,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:01:55,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:01:55,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:01:55,786 INFO L87 Difference]: Start difference. First operand 350470 states and 364553 transitions. Second operand has 4 states, 4 states have (on average 67.0) internal successors, (268), 3 states have internal predecessors, (268), 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 12:01:58,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:01:58,659 INFO L93 Difference]: Finished difference Result 707551 states and 735806 transitions. [2024-12-02 12:01:58,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:01:58,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 67.0) internal successors, (268), 3 states have internal predecessors, (268), 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 637 [2024-12-02 12:01:58,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:01:58,989 INFO L225 Difference]: With dead ends: 707551 [2024-12-02 12:01:58,989 INFO L226 Difference]: Without dead ends: 356068 [2024-12-02 12:01:59,072 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:01:59,072 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 378 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 12:01:59,072 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 75 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 12:01:59,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356068 states. [2024-12-02 12:02:02,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356068 to 348637. [2024-12-02 12:02:03,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348637 states, 348636 states have (on average 1.0402597551601096) internal successors, (362672), 348636 states have internal predecessors, (362672), 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 12:02:03,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348637 states to 348637 states and 362672 transitions. [2024-12-02 12:02:03,381 INFO L78 Accepts]: Start accepts. Automaton has 348637 states and 362672 transitions. Word has length 637 [2024-12-02 12:02:03,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:02:03,381 INFO L471 AbstractCegarLoop]: Abstraction has 348637 states and 362672 transitions. [2024-12-02 12:02:03,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.0) internal successors, (268), 3 states have internal predecessors, (268), 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 12:02:03,381 INFO L276 IsEmpty]: Start isEmpty. Operand 348637 states and 362672 transitions. [2024-12-02 12:02:03,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 647 [2024-12-02 12:02:03,422 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:02:03,423 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:02:03,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-12-02 12:02:03,423 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:02:03,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:02:03,423 INFO L85 PathProgramCache]: Analyzing trace with hash 168614733, now seen corresponding path program 1 times [2024-12-02 12:02:03,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:02:03,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149229240] [2024-12-02 12:02:03,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:02:03,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:02:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:02:04,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1408 backedges. 502 proven. 0 refuted. 0 times theorem prover too weak. 906 trivial. 0 not checked. [2024-12-02 12:02:04,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:02:04,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149229240] [2024-12-02 12:02:04,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149229240] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:02:04,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:02:04,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:02:04,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14499149] [2024-12-02 12:02:04,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:02:04,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:02:04,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:02:04,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:02:04,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:02:04,147 INFO L87 Difference]: Start difference. First operand 348637 states and 362672 transitions. Second operand has 4 states, 4 states have (on average 76.0) internal successors, (304), 3 states have internal predecessors, (304), 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 12:02:06,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:02:06,526 INFO L93 Difference]: Finished difference Result 640522 states and 666658 transitions. [2024-12-02 12:02:06,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:02:06,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 3 states have internal predecessors, (304), 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 646 [2024-12-02 12:02:06,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:02:06,832 INFO L225 Difference]: With dead ends: 640522 [2024-12-02 12:02:06,832 INFO L226 Difference]: Without dead ends: 288436 [2024-12-02 12:02:06,950 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:02:06,951 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 500 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 12:02:06,951 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 282 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 12:02:07,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288436 states. [2024-12-02 12:02:10,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288436 to 212886. [2024-12-02 12:02:10,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212886 states, 212885 states have (on average 1.0421542147168659) internal successors, (221859), 212885 states have internal predecessors, (221859), 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 12:02:10,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212886 states to 212886 states and 221859 transitions. [2024-12-02 12:02:10,386 INFO L78 Accepts]: Start accepts. Automaton has 212886 states and 221859 transitions. Word has length 646 [2024-12-02 12:02:10,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:02:10,387 INFO L471 AbstractCegarLoop]: Abstraction has 212886 states and 221859 transitions. [2024-12-02 12:02:10,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 3 states have internal predecessors, (304), 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 12:02:10,387 INFO L276 IsEmpty]: Start isEmpty. Operand 212886 states and 221859 transitions. [2024-12-02 12:02:10,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2024-12-02 12:02:10,422 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:02:10,422 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:02:10,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-12-02 12:02:10,422 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:02:10,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:02:10,423 INFO L85 PathProgramCache]: Analyzing trace with hash -695516306, now seen corresponding path program 1 times [2024-12-02 12:02:10,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:02:10,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843176157] [2024-12-02 12:02:10,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:02:10,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:02:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat