./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.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_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5af223e668aa8b86ae636f9439d9ac4f153fc620faa9da4461ac4ba5e2c60ee8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:46:07,994 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:46:08,124 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:46:08,139 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:46:08,139 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:46:08,187 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:46:08,189 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:46:08,189 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:46:08,190 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:46:08,190 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:46:08,191 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:46:08,192 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:46:08,193 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:46:08,193 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:46:08,193 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:46:08,194 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:46:08,194 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:46:08,194 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:46:08,194 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:46:08,194 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:46:08,195 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:46:08,195 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:46:08,195 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:46:08,196 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:46:08,196 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:46:08,196 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:46:08,196 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:46:08,196 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:46:08,197 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:46:08,197 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:46:08,197 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:46:08,197 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:46:08,197 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:46:08,198 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:46:08,199 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:46:08,199 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:46:08,199 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:46:08,199 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:46:08,199 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:46:08,200 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:46:08,200 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:46:08,200 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:46:08,200 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:46:08,200 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:46:08,201 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:46:08,201 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:46:08,201 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:46:08,202 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:46:08,202 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_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5af223e668aa8b86ae636f9439d9ac4f153fc620faa9da4461ac4ba5e2c60ee8 [2024-11-28 03:46:08,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:46:08,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:46:08,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:46:08,637 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:46:08,637 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:46:08,639 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c [2024-11-28 03:46:12,278 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/data/30414b129/2320b6c2bf4e4274907015a378d8c1d5/FLAGbd5db431a [2024-11-28 03:46:13,004 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:46:13,006 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c [2024-11-28 03:46:13,058 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/data/30414b129/2320b6c2bf4e4274907015a378d8c1d5/FLAGbd5db431a [2024-11-28 03:46:13,087 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/data/30414b129/2320b6c2bf4e4274907015a378d8c1d5 [2024-11-28 03:46:13,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:46:13,095 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:46:13,098 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:46:13,098 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:46:13,105 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:46:13,106 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:46:13" (1/1) ... [2024-11-28 03:46:13,107 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@488d5790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:46:13, skipping insertion in model container [2024-11-28 03:46:13,108 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:46:13" (1/1) ... [2024-11-28 03:46:13,289 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:46:13,755 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_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c[6450,6463] [2024-11-28 03:46:13,818 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_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c[8325,8338] [2024-11-28 03:46:15,033 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:46:15,053 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:46:15,104 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_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c[6450,6463] [2024-11-28 03:46:15,109 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_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c[8325,8338] [2024-11-28 03:46:15,803 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:46:15,849 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:46:15,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:46:15 WrapperNode [2024-11-28 03:46:15,851 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:46:15,852 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:46:15,853 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:46:15,853 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:46:15,862 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:46:15" (1/1) ... [2024-11-28 03:46:15,941 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:46:15" (1/1) ... [2024-11-28 03:46:16,382 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4981 [2024-11-28 03:46:16,383 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:46:16,384 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:46:16,384 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:46:16,384 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:46:16,397 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:46:15" (1/1) ... [2024-11-28 03:46:16,397 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:46:15" (1/1) ... [2024-11-28 03:46:16,471 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:46:15" (1/1) ... [2024-11-28 03:46:16,824 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]. [2024-11-28 03:46:16,825 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:46:15" (1/1) ... [2024-11-28 03:46:16,825 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:46:15" (1/1) ... [2024-11-28 03:46:17,024 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:46:15" (1/1) ... [2024-11-28 03:46:17,065 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:46:15" (1/1) ... [2024-11-28 03:46:17,119 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:46:15" (1/1) ... [2024-11-28 03:46:17,189 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:46:15" (1/1) ... [2024-11-28 03:46:17,215 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:46:15" (1/1) ... [2024-11-28 03:46:17,311 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:46:17,312 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:46:17,313 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:46:17,313 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:46:17,314 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:46:15" (1/1) ... [2024-11-28 03:46:17,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:46:17,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:46:17,364 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:46:17,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:46:17,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:46:17,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:46:17,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:46:17,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:46:17,529 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:46:17,532 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:46:25,063 INFO L? ?]: Removed 734 outVars from TransFormulas that were not future-live. [2024-11-28 03:46:25,063 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:46:25,121 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:46:25,125 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 03:46:25,125 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:46:25 BoogieIcfgContainer [2024-11-28 03:46:25,125 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:46:25,130 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:46:25,130 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:46:25,139 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:46:25,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:46:13" (1/3) ... [2024-11-28 03:46:25,140 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9118d13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:46:25, skipping insertion in model container [2024-11-28 03:46:25,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:46:15" (2/3) ... [2024-11-28 03:46:25,140 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9118d13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:46:25, skipping insertion in model container [2024-11-28 03:46:25,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:46:25" (3/3) ... [2024-11-28 03:46:25,142 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c [2024-11-28 03:46:25,163 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:46:25,166 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c that has 1 procedures, 874 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-28 03:46:25,286 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:46:25,306 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;@47e248b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:46:25,306 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 03:46:25,318 INFO L276 IsEmpty]: Start isEmpty. Operand has 874 states, 871 states have (on average 1.9058553386911596) internal successors, (1660), 873 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:25,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 03:46:25,327 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:46:25,328 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:46:25,328 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:46:25,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:46:25,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1102834421, now seen corresponding path program 1 times [2024-11-28 03:46:25,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:46:25,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441724337] [2024-11-28 03:46:25,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:46:25,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:46:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:46:25,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:25,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:46:25,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441724337] [2024-11-28 03:46:25,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441724337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:46:25,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:46:25,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:46:25,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927721682] [2024-11-28 03:46:25,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:46:25,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:46:25,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:46:25,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:46:25,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:46:25,795 INFO L87 Difference]: Start difference. First operand has 874 states, 871 states have (on average 1.9058553386911596) internal successors, (1660), 873 states have internal predecessors, (1660), 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 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:31,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:46:31,095 INFO L93 Difference]: Finished difference Result 2479 states and 4780 transitions. [2024-11-28 03:46:31,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:46:31,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 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 16 [2024-11-28 03:46:31,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:46:31,117 INFO L225 Difference]: With dead ends: 2479 [2024-11-28 03:46:31,117 INFO L226 Difference]: Without dead ends: 1559 [2024-11-28 03:46:31,129 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 [2024-11-28 03:46:31,133 INFO L435 NwaCegarLoop]: 560 mSDtfsCounter, 907 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:46:31,134 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 571 Invalid, 2985 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [651 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-11-28 03:46:31,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2024-11-28 03:46:31,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 1559. [2024-11-28 03:46:31,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 1557 states have (on average 1.640333975594091) internal successors, (2554), 1558 states have internal predecessors, (2554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:31,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 2554 transitions. [2024-11-28 03:46:31,292 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 2554 transitions. Word has length 16 [2024-11-28 03:46:31,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:46:31,292 INFO L471 AbstractCegarLoop]: Abstraction has 1559 states and 2554 transitions. [2024-11-28 03:46:31,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:31,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 2554 transitions. [2024-11-28 03:46:31,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 03:46:31,293 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:46:31,293 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] [2024-11-28 03:46:31,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:46:31,296 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:46:31,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:46:31,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1945522798, now seen corresponding path program 1 times [2024-11-28 03:46:31,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:46:31,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304953951] [2024-11-28 03:46:31,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:46:31,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:46:31,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:46:31,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:31,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:46:31,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304953951] [2024-11-28 03:46:31,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304953951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:46:31,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:46:31,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:46:31,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374904615] [2024-11-28 03:46:31,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:46:31,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:46:31,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:46:31,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:46:31,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:46:31,587 INFO L87 Difference]: Start difference. First operand 1559 states and 2554 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:31,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:46:31,681 INFO L93 Difference]: Finished difference Result 1595 states and 2608 transitions. [2024-11-28 03:46:31,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:46:31,681 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 20 [2024-11-28 03:46:31,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:46:31,690 INFO L225 Difference]: With dead ends: 1595 [2024-11-28 03:46:31,690 INFO L226 Difference]: Without dead ends: 1559 [2024-11-28 03:46:31,692 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:46:31,693 INFO L435 NwaCegarLoop]: 1525 mSDtfsCounter, 0 mSDsluCounter, 4554 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6079 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:46:31,693 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6079 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:46:31,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2024-11-28 03:46:31,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 1559. [2024-11-28 03:46:31,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 1557 states have (on average 1.630057803468208) internal successors, (2538), 1558 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:31,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 2538 transitions. [2024-11-28 03:46:31,771 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 2538 transitions. Word has length 20 [2024-11-28 03:46:31,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:46:31,771 INFO L471 AbstractCegarLoop]: Abstraction has 1559 states and 2538 transitions. [2024-11-28 03:46:31,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:31,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 2538 transitions. [2024-11-28 03:46:31,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-28 03:46:31,773 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:46:31,773 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] [2024-11-28 03:46:31,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:46:31,773 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:46:31,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:46:31,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1226597962, now seen corresponding path program 1 times [2024-11-28 03:46:31,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:46:31,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167960302] [2024-11-28 03:46:31,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:46:31,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:46:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:46:31,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:31,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:46:31,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167960302] [2024-11-28 03:46:31,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167960302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:46:31,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:46:31,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:46:31,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443600537] [2024-11-28 03:46:31,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:46:31,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:46:31,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:46:31,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:46:31,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:46:31,984 INFO L87 Difference]: Start difference. First operand 1559 states and 2538 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:32,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:46:32,125 INFO L93 Difference]: Finished difference Result 1751 states and 2838 transitions. [2024-11-28 03:46:32,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:46:32,125 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 35 [2024-11-28 03:46:32,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:46:32,132 INFO L225 Difference]: With dead ends: 1751 [2024-11-28 03:46:32,132 INFO L226 Difference]: Without dead ends: 1719 [2024-11-28 03:46:32,134 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:46:32,136 INFO L435 NwaCegarLoop]: 1505 mSDtfsCounter, 4682 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4682 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:46:32,137 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4682 Valid, 1758 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:46:32,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2024-11-28 03:46:32,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1589. [2024-11-28 03:46:32,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1587 states have (on average 1.6288594833018273) internal successors, (2585), 1588 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:32,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2585 transitions. [2024-11-28 03:46:32,185 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2585 transitions. Word has length 35 [2024-11-28 03:46:32,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:46:32,185 INFO L471 AbstractCegarLoop]: Abstraction has 1589 states and 2585 transitions. [2024-11-28 03:46:32,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:32,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2585 transitions. [2024-11-28 03:46:32,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-28 03:46:32,189 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:46:32,190 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] [2024-11-28 03:46:32,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:46:32,190 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:46:32,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:46:32,193 INFO L85 PathProgramCache]: Analyzing trace with hash 523901274, now seen corresponding path program 1 times [2024-11-28 03:46:32,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:46:32,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685234527] [2024-11-28 03:46:32,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:46:32,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:46:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:46:32,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:32,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:46:32,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685234527] [2024-11-28 03:46:32,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685234527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:46:32,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:46:32,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:46:32,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750321962] [2024-11-28 03:46:32,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:46:32,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:46:32,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:46:32,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:46:32,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:46:32,341 INFO L87 Difference]: Start difference. First operand 1589 states and 2585 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:32,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:46:32,400 INFO L93 Difference]: Finished difference Result 1702 states and 2760 transitions. [2024-11-28 03:46:32,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:46:32,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-28 03:46:32,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:46:32,408 INFO L225 Difference]: With dead ends: 1702 [2024-11-28 03:46:32,408 INFO L226 Difference]: Without dead ends: 1640 [2024-11-28 03:46:32,409 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:46:32,409 INFO L435 NwaCegarLoop]: 1507 mSDtfsCounter, 1468 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:46:32,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 1550 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:46:32,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2024-11-28 03:46:32,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1636. [2024-11-28 03:46:32,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1634 states have (on average 1.6248470012239902) internal successors, (2655), 1635 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:32,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 2655 transitions. [2024-11-28 03:46:32,463 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 2655 transitions. Word has length 37 [2024-11-28 03:46:32,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:46:32,464 INFO L471 AbstractCegarLoop]: Abstraction has 1636 states and 2655 transitions. [2024-11-28 03:46:32,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:32,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 2655 transitions. [2024-11-28 03:46:32,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-28 03:46:32,468 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:46:32,468 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] [2024-11-28 03:46:32,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:46:32,468 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:46:32,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:46:32,469 INFO L85 PathProgramCache]: Analyzing trace with hash 590394786, now seen corresponding path program 1 times [2024-11-28 03:46:32,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:46:32,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415655603] [2024-11-28 03:46:32,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:46:32,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:46:32,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:46:32,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:32,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:46:32,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415655603] [2024-11-28 03:46:32,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415655603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:46:32,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:46:32,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:46:32,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765041375] [2024-11-28 03:46:32,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:46:32,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:46:32,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:46:32,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:46:32,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:46:32,791 INFO L87 Difference]: Start difference. First operand 1636 states and 2655 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:32,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:46:32,913 INFO L93 Difference]: Finished difference Result 1747 states and 2823 transitions. [2024-11-28 03:46:32,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:46:32,914 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-28 03:46:32,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:46:32,921 INFO L225 Difference]: With dead ends: 1747 [2024-11-28 03:46:32,921 INFO L226 Difference]: Without dead ends: 1638 [2024-11-28 03:46:32,922 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:46:32,924 INFO L435 NwaCegarLoop]: 1506 mSDtfsCounter, 4426 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4426 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:46:32,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4426 Valid, 1598 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:46:32,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2024-11-28 03:46:32,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 1636. [2024-11-28 03:46:32,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1634 states have (on average 1.6236230110159118) internal successors, (2653), 1635 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:32,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 2653 transitions. [2024-11-28 03:46:32,975 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 2653 transitions. Word has length 37 [2024-11-28 03:46:32,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:46:32,977 INFO L471 AbstractCegarLoop]: Abstraction has 1636 states and 2653 transitions. [2024-11-28 03:46:32,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:32,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 2653 transitions. [2024-11-28 03:46:32,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-28 03:46:32,980 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:46:32,980 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] [2024-11-28 03:46:32,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:46:32,980 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:46:32,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:46:32,981 INFO L85 PathProgramCache]: Analyzing trace with hash 707645968, now seen corresponding path program 1 times [2024-11-28 03:46:32,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:46:32,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027475773] [2024-11-28 03:46:32,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:46:32,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:46:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:46:33,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:33,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:46:33,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027475773] [2024-11-28 03:46:33,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027475773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:46:33,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:46:33,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 03:46:33,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904592391] [2024-11-28 03:46:33,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:46:33,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:46:33,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:46:33,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:46:33,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:46:33,329 INFO L87 Difference]: Start difference. First operand 1636 states and 2653 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:33,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:46:33,438 INFO L93 Difference]: Finished difference Result 1644 states and 2662 transitions. [2024-11-28 03:46:33,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:46:33,439 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-28 03:46:33,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:46:33,449 INFO L225 Difference]: With dead ends: 1644 [2024-11-28 03:46:33,449 INFO L226 Difference]: Without dead ends: 1642 [2024-11-28 03:46:33,450 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:46:33,452 INFO L435 NwaCegarLoop]: 1505 mSDtfsCounter, 0 mSDsluCounter, 9017 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10522 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:46:33,453 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10522 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:46:33,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2024-11-28 03:46:33,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1642. [2024-11-28 03:46:33,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1642 states, 1640 states have (on average 1.6207317073170733) internal successors, (2658), 1641 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:33,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2658 transitions. [2024-11-28 03:46:33,497 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2658 transitions. Word has length 38 [2024-11-28 03:46:33,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:46:33,497 INFO L471 AbstractCegarLoop]: Abstraction has 1642 states and 2658 transitions. [2024-11-28 03:46:33,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:33,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2658 transitions. [2024-11-28 03:46:33,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 03:46:33,499 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:46:33,499 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] [2024-11-28 03:46:33,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:46:33,499 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:46:33,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:46:33,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1903217474, now seen corresponding path program 1 times [2024-11-28 03:46:33,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:46:33,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104625213] [2024-11-28 03:46:33,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:46:33,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:46:33,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:46:33,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:33,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:46:33,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104625213] [2024-11-28 03:46:33,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104625213] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:46:33,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:46:33,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:46:33,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721744659] [2024-11-28 03:46:33,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:46:33,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:46:33,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:46:33,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:46:33,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:46:33,568 INFO L87 Difference]: Start difference. First operand 1642 states and 2658 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:33,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:46:33,647 INFO L93 Difference]: Finished difference Result 1856 states and 2970 transitions. [2024-11-28 03:46:33,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:46:33,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2024-11-28 03:46:33,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:46:33,654 INFO L225 Difference]: With dead ends: 1856 [2024-11-28 03:46:33,654 INFO L226 Difference]: Without dead ends: 1741 [2024-11-28 03:46:33,655 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:46:33,656 INFO L435 NwaCegarLoop]: 1528 mSDtfsCounter, 1475 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:46:33,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1587 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:46:33,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2024-11-28 03:46:33,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1739. [2024-11-28 03:46:33,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1739 states, 1737 states have (on average 1.6090961427748993) internal successors, (2795), 1738 states have internal predecessors, (2795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:33,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1739 states to 1739 states and 2795 transitions. [2024-11-28 03:46:33,705 INFO L78 Accepts]: Start accepts. Automaton has 1739 states and 2795 transitions. Word has length 39 [2024-11-28 03:46:33,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:46:33,705 INFO L471 AbstractCegarLoop]: Abstraction has 1739 states and 2795 transitions. [2024-11-28 03:46:33,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:33,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1739 states and 2795 transitions. [2024-11-28 03:46:33,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 03:46:33,707 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:46:33,707 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] [2024-11-28 03:46:33,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:46:33,708 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:46:33,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:46:33,708 INFO L85 PathProgramCache]: Analyzing trace with hash 122284610, now seen corresponding path program 1 times [2024-11-28 03:46:33,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:46:33,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132390206] [2024-11-28 03:46:33,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:46:33,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:46:33,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:46:33,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:33,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:46:33,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132390206] [2024-11-28 03:46:33,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132390206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:46:33,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:46:33,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:46:33,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769566421] [2024-11-28 03:46:33,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:46:33,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:46:33,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:46:33,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:46:33,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:46:33,776 INFO L87 Difference]: Start difference. First operand 1739 states and 2795 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:33,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:46:33,824 INFO L93 Difference]: Finished difference Result 2131 states and 3353 transitions. [2024-11-28 03:46:33,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:46:33,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2024-11-28 03:46:33,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:46:33,832 INFO L225 Difference]: With dead ends: 2131 [2024-11-28 03:46:33,832 INFO L226 Difference]: Without dead ends: 1919 [2024-11-28 03:46:33,833 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:46:33,834 INFO L435 NwaCegarLoop]: 1538 mSDtfsCounter, 1477 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:46:33,834 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 1593 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:46:33,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2024-11-28 03:46:33,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1917. [2024-11-28 03:46:33,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1917 states, 1915 states have (on average 1.5859007832898173) internal successors, (3037), 1916 states have internal predecessors, (3037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:33,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 3037 transitions. [2024-11-28 03:46:33,892 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 3037 transitions. Word has length 39 [2024-11-28 03:46:33,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:46:33,893 INFO L471 AbstractCegarLoop]: Abstraction has 1917 states and 3037 transitions. [2024-11-28 03:46:33,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:33,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 3037 transitions. [2024-11-28 03:46:33,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-28 03:46:33,894 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:46:33,894 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] [2024-11-28 03:46:33,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:46:33,894 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:46:33,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:46:33,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1688735299, now seen corresponding path program 1 times [2024-11-28 03:46:33,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:46:33,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088971374] [2024-11-28 03:46:33,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:46:33,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:46:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:46:33,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:33,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:46:33,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088971374] [2024-11-28 03:46:33,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088971374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:46:33,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:46:33,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:46:33,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523987318] [2024-11-28 03:46:33,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:46:33,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:46:33,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:46:33,967 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:46:33,967 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:46:33,967 INFO L87 Difference]: Start difference. First operand 1917 states and 3037 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:34,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:46:34,020 INFO L93 Difference]: Finished difference Result 2340 states and 3643 transitions. [2024-11-28 03:46:34,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:46:34,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-28 03:46:34,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:46:34,028 INFO L225 Difference]: With dead ends: 2340 [2024-11-28 03:46:34,029 INFO L226 Difference]: Without dead ends: 2105 [2024-11-28 03:46:34,030 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:46:34,032 INFO L435 NwaCegarLoop]: 1543 mSDtfsCounter, 1476 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:46:34,032 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1594 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:46:34,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2105 states. [2024-11-28 03:46:34,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2105 to 2103. [2024-11-28 03:46:34,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2103 states, 2101 states have (on average 1.5663969538315088) internal successors, (3291), 2102 states have internal predecessors, (3291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:34,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2103 states to 2103 states and 3291 transitions. [2024-11-28 03:46:34,090 INFO L78 Accepts]: Start accepts. Automaton has 2103 states and 3291 transitions. Word has length 41 [2024-11-28 03:46:34,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:46:34,090 INFO L471 AbstractCegarLoop]: Abstraction has 2103 states and 3291 transitions. [2024-11-28 03:46:34,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:34,090 INFO L276 IsEmpty]: Start isEmpty. Operand 2103 states and 3291 transitions. [2024-11-28 03:46:34,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-28 03:46:34,091 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:46:34,091 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] [2024-11-28 03:46:34,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 03:46:34,091 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:46:34,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:46:34,092 INFO L85 PathProgramCache]: Analyzing trace with hash 923003988, now seen corresponding path program 1 times [2024-11-28 03:46:34,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:46:34,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441598244] [2024-11-28 03:46:34,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:46:34,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:46:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:46:34,229 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 03:46:34,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:46:34,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441598244] [2024-11-28 03:46:34,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441598244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:46:34,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:46:34,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:46:34,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175822256] [2024-11-28 03:46:34,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:46:34,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:46:34,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:46:34,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:46:34,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:46:34,231 INFO L87 Difference]: Start difference. First operand 2103 states and 3291 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:34,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:46:34,373 INFO L93 Difference]: Finished difference Result 3959 states and 5871 transitions. [2024-11-28 03:46:34,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:46:34,374 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-28 03:46:34,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:46:34,386 INFO L225 Difference]: With dead ends: 3959 [2024-11-28 03:46:34,386 INFO L226 Difference]: Without dead ends: 3385 [2024-11-28 03:46:34,388 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:46:34,388 INFO L435 NwaCegarLoop]: 1551 mSDtfsCounter, 3061 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3061 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:46:34,389 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3061 Valid, 3147 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:46:34,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3385 states. [2024-11-28 03:46:34,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3385 to 2675. [2024-11-28 03:46:34,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2675 states, 2673 states have (on average 1.5260007482229705) internal successors, (4079), 2674 states have internal predecessors, (4079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:34,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2675 states to 2675 states and 4079 transitions. [2024-11-28 03:46:34,474 INFO L78 Accepts]: Start accepts. Automaton has 2675 states and 4079 transitions. Word has length 54 [2024-11-28 03:46:34,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:46:34,474 INFO L471 AbstractCegarLoop]: Abstraction has 2675 states and 4079 transitions. [2024-11-28 03:46:34,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:34,475 INFO L276 IsEmpty]: Start isEmpty. Operand 2675 states and 4079 transitions. [2024-11-28 03:46:34,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-28 03:46:34,475 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:46:34,476 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] [2024-11-28 03:46:34,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 03:46:34,476 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:46:34,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:46:34,476 INFO L85 PathProgramCache]: Analyzing trace with hash -857928876, now seen corresponding path program 1 times [2024-11-28 03:46:34,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:46:34,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656324314] [2024-11-28 03:46:34,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:46:34,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:46:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:46:34,684 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:46:34,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:46:34,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656324314] [2024-11-28 03:46:34,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656324314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:46:34,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:46:34,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:46:34,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907252472] [2024-11-28 03:46:34,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:46:34,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:46:34,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:46:34,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:46:34,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:46:34,685 INFO L87 Difference]: Start difference. First operand 2675 states and 4079 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:34,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:46:34,838 INFO L93 Difference]: Finished difference Result 4531 states and 6659 transitions. [2024-11-28 03:46:34,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:46:34,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 54 [2024-11-28 03:46:34,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:46:34,854 INFO L225 Difference]: With dead ends: 4531 [2024-11-28 03:46:34,854 INFO L226 Difference]: Without dead ends: 3957 [2024-11-28 03:46:34,856 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:46:34,857 INFO L435 NwaCegarLoop]: 1552 mSDtfsCounter, 3053 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3053 SdHoareTripleChecker+Valid, 3159 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:46:34,858 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3053 Valid, 3159 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:46:34,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3957 states. [2024-11-28 03:46:34,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3957 to 3535. [2024-11-28 03:46:34,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3535 states, 3533 states have (on average 1.486272289838664) internal successors, (5251), 3534 states have internal predecessors, (5251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:34,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 5251 transitions. [2024-11-28 03:46:34,977 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 5251 transitions. Word has length 54 [2024-11-28 03:46:34,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:46:34,977 INFO L471 AbstractCegarLoop]: Abstraction has 3535 states and 5251 transitions. [2024-11-28 03:46:34,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:34,977 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 5251 transitions. [2024-11-28 03:46:34,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 03:46:34,978 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:46:34,978 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 03:46:34,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 03:46:34,979 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:46:34,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:46:34,979 INFO L85 PathProgramCache]: Analyzing trace with hash 894361900, now seen corresponding path program 1 times [2024-11-28 03:46:34,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:46:34,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476183742] [2024-11-28 03:46:34,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:46:34,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:46:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:46:35,112 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:35,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:46:35,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476183742] [2024-11-28 03:46:35,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476183742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:46:35,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:46:35,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:46:35,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106094356] [2024-11-28 03:46:35,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:46:35,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:46:35,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:46:35,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:46:35,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:46:35,115 INFO L87 Difference]: Start difference. First operand 3535 states and 5251 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:35,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:46:35,185 INFO L93 Difference]: Finished difference Result 5011 states and 7314 transitions. [2024-11-28 03:46:35,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:46:35,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2024-11-28 03:46:35,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:46:35,196 INFO L225 Difference]: With dead ends: 5011 [2024-11-28 03:46:35,196 INFO L226 Difference]: Without dead ends: 3005 [2024-11-28 03:46:35,199 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:46:35,200 INFO L435 NwaCegarLoop]: 1535 mSDtfsCounter, 34 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3031 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:46:35,200 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3031 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:46:35,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2024-11-28 03:46:35,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 3003. [2024-11-28 03:46:35,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3003 states, 3001 states have (on average 1.5071642785738086) internal successors, (4523), 3002 states have internal predecessors, (4523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:35,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 4523 transitions. [2024-11-28 03:46:35,289 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 4523 transitions. Word has length 56 [2024-11-28 03:46:35,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:46:35,289 INFO L471 AbstractCegarLoop]: Abstraction has 3003 states and 4523 transitions. [2024-11-28 03:46:35,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:35,289 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 4523 transitions. [2024-11-28 03:46:35,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 03:46:35,290 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:46:35,290 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] [2024-11-28 03:46:35,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 03:46:35,291 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:46:35,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:46:35,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1218909775, now seen corresponding path program 1 times [2024-11-28 03:46:35,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:46:35,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158620499] [2024-11-28 03:46:35,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:46:35,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:46:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:46:35,409 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:46:35,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:46:35,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158620499] [2024-11-28 03:46:35,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158620499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:46:35,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:46:35,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:46:35,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569210648] [2024-11-28 03:46:35,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:46:35,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:46:35,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:46:35,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:46:35,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:46:35,412 INFO L87 Difference]: Start difference. First operand 3003 states and 4523 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:35,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:46:35,547 INFO L93 Difference]: Finished difference Result 4259 states and 6279 transitions. [2024-11-28 03:46:35,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:46:35,548 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 56 [2024-11-28 03:46:35,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:46:35,568 INFO L225 Difference]: With dead ends: 4259 [2024-11-28 03:46:35,568 INFO L226 Difference]: Without dead ends: 3841 [2024-11-28 03:46:35,570 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:46:35,571 INFO L435 NwaCegarLoop]: 1549 mSDtfsCounter, 3051 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3051 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:46:35,571 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3051 Valid, 3147 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:46:35,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3841 states. [2024-11-28 03:46:35,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3841 to 3419. [2024-11-28 03:46:35,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3419 states, 3417 states have (on average 1.492244659057653) internal successors, (5099), 3418 states have internal predecessors, (5099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:35,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3419 states to 3419 states and 5099 transitions. [2024-11-28 03:46:35,681 INFO L78 Accepts]: Start accepts. Automaton has 3419 states and 5099 transitions. Word has length 56 [2024-11-28 03:46:35,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:46:35,681 INFO L471 AbstractCegarLoop]: Abstraction has 3419 states and 5099 transitions. [2024-11-28 03:46:35,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:35,682 INFO L276 IsEmpty]: Start isEmpty. Operand 3419 states and 5099 transitions. [2024-11-28 03:46:35,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-28 03:46:35,684 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:46:35,684 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 03:46:35,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 03:46:35,684 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:46:35,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:46:35,684 INFO L85 PathProgramCache]: Analyzing trace with hash -877348108, now seen corresponding path program 1 times [2024-11-28 03:46:35,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:46:35,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877709942] [2024-11-28 03:46:35,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:46:35,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:46:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:46:35,787 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:35,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:46:35,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877709942] [2024-11-28 03:46:35,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877709942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:46:35,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:46:35,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:46:35,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777303223] [2024-11-28 03:46:35,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:46:35,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:46:35,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:46:35,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:46:35,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:46:35,789 INFO L87 Difference]: Start difference. First operand 3419 states and 5099 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:35,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:46:35,841 INFO L93 Difference]: Finished difference Result 4359 states and 6397 transitions. [2024-11-28 03:46:35,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:46:35,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-28 03:46:35,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:46:35,848 INFO L225 Difference]: With dead ends: 4359 [2024-11-28 03:46:35,848 INFO L226 Difference]: Without dead ends: 2485 [2024-11-28 03:46:35,850 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:46:35,851 INFO L435 NwaCegarLoop]: 1528 mSDtfsCounter, 29 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3016 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:46:35,851 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3016 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:46:35,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2485 states. [2024-11-28 03:46:35,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2485 to 2483. [2024-11-28 03:46:35,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2483 states, 2481 states have (on average 1.5255945183393793) internal successors, (3785), 2482 states have internal predecessors, (3785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:35,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2483 states to 2483 states and 3785 transitions. [2024-11-28 03:46:35,911 INFO L78 Accepts]: Start accepts. Automaton has 2483 states and 3785 transitions. Word has length 57 [2024-11-28 03:46:35,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:46:35,911 INFO L471 AbstractCegarLoop]: Abstraction has 2483 states and 3785 transitions. [2024-11-28 03:46:35,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:35,911 INFO L276 IsEmpty]: Start isEmpty. Operand 2483 states and 3785 transitions. [2024-11-28 03:46:35,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-28 03:46:35,912 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:46:35,912 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] [2024-11-28 03:46:35,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 03:46:35,913 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:46:35,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:46:35,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1226511174, now seen corresponding path program 1 times [2024-11-28 03:46:35,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:46:35,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282423206] [2024-11-28 03:46:35,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:46:35,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:46:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:46:36,023 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:36,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:46:36,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282423206] [2024-11-28 03:46:36,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282423206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:46:36,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:46:36,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:46:36,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615916251] [2024-11-28 03:46:36,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:46:36,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:46:36,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:46:36,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:46:36,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:46:36,024 INFO L87 Difference]: Start difference. First operand 2483 states and 3785 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:36,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:46:36,071 INFO L93 Difference]: Finished difference Result 2955 states and 4426 transitions. [2024-11-28 03:46:36,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:46:36,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2024-11-28 03:46:36,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:46:36,077 INFO L225 Difference]: With dead ends: 2955 [2024-11-28 03:46:36,077 INFO L226 Difference]: Without dead ends: 2017 [2024-11-28 03:46:36,079 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:46:36,083 INFO L435 NwaCegarLoop]: 1521 mSDtfsCounter, 26 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:46:36,083 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3001 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:46:36,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2024-11-28 03:46:36,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 2015. [2024-11-28 03:46:36,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2015 states, 2013 states have (on average 1.5583705911574763) internal successors, (3137), 2014 states have internal predecessors, (3137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:36,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2015 states to 2015 states and 3137 transitions. [2024-11-28 03:46:36,174 INFO L78 Accepts]: Start accepts. Automaton has 2015 states and 3137 transitions. Word has length 59 [2024-11-28 03:46:36,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:46:36,175 INFO L471 AbstractCegarLoop]: Abstraction has 2015 states and 3137 transitions. [2024-11-28 03:46:36,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:36,175 INFO L276 IsEmpty]: Start isEmpty. Operand 2015 states and 3137 transitions. [2024-11-28 03:46:36,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-28 03:46:36,178 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:46:36,178 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 03:46:36,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 03:46:36,178 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:46:36,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:46:36,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1826022888, now seen corresponding path program 1 times [2024-11-28 03:46:36,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:46:36,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090478619] [2024-11-28 03:46:36,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:46:36,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:46:36,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:46:38,906 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:38,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:46:38,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090478619] [2024-11-28 03:46:38,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090478619] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:46:38,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536853563] [2024-11-28 03:46:38,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:46:38,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:46:38,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:46:38,911 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:46:38,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:46:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:46:39,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 03:46:39,053 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:46:39,323 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:46:39,323 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:46:39,543 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:46:39,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536853563] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:46:39,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:46:39,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2024-11-28 03:46:39,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103005756] [2024-11-28 03:46:39,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:46:39,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 03:46:39,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:46:39,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 03:46:39,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2024-11-28 03:46:39,546 INFO L87 Difference]: Start difference. First operand 2015 states and 3137 transitions. Second operand has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:43,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:46:43,174 INFO L93 Difference]: Finished difference Result 4284 states and 6111 transitions. [2024-11-28 03:46:43,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-28 03:46:43,174 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 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 61 [2024-11-28 03:46:43,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:46:43,183 INFO L225 Difference]: With dead ends: 4284 [2024-11-28 03:46:43,183 INFO L226 Difference]: Without dead ends: 3814 [2024-11-28 03:46:43,186 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1097 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=755, Invalid=3027, Unknown=0, NotChecked=0, Total=3782 [2024-11-28 03:46:43,187 INFO L435 NwaCegarLoop]: 1503 mSDtfsCounter, 15563 mSDsluCounter, 6256 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15563 SdHoareTripleChecker+Valid, 7759 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:46:43,188 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15563 Valid, 7759 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:46:43,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3814 states. [2024-11-28 03:46:43,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3814 to 3736. [2024-11-28 03:46:43,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3736 states, 3734 states have (on average 1.4081414033208355) internal successors, (5258), 3735 states have internal predecessors, (5258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:43,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3736 states to 3736 states and 5258 transitions. [2024-11-28 03:46:43,312 INFO L78 Accepts]: Start accepts. Automaton has 3736 states and 5258 transitions. Word has length 61 [2024-11-28 03:46:43,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:46:43,312 INFO L471 AbstractCegarLoop]: Abstraction has 3736 states and 5258 transitions. [2024-11-28 03:46:43,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:43,313 INFO L276 IsEmpty]: Start isEmpty. Operand 3736 states and 5258 transitions. [2024-11-28 03:46:43,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 03:46:43,315 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:46:43,315 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] [2024-11-28 03:46:43,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 03:46:43,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 03:46:43,517 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:46:43,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:46:43,517 INFO L85 PathProgramCache]: Analyzing trace with hash 168764099, now seen corresponding path program 1 times [2024-11-28 03:46:43,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:46:43,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530747245] [2024-11-28 03:46:43,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:46:43,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:46:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:46:43,998 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:43,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:46:43,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530747245] [2024-11-28 03:46:43,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530747245] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:46:43,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648045633] [2024-11-28 03:46:43,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:46:43,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:46:43,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:46:44,001 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:46:44,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:46:44,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:46:44,148 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 03:46:44,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:46:44,830 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:44,830 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:46:46,022 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:46,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648045633] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:46:46,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:46:46,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 13] total 31 [2024-11-28 03:46:46,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804058050] [2024-11-28 03:46:46,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:46:46,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-28 03:46:46,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:46:46,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-28 03:46:46,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=803, Unknown=0, NotChecked=0, Total=930 [2024-11-28 03:46:46,024 INFO L87 Difference]: Start difference. First operand 3736 states and 5258 transitions. Second operand has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 31 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:48,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:46:48,550 INFO L93 Difference]: Finished difference Result 9187 states and 12165 transitions. [2024-11-28 03:46:48,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-28 03:46:48,551 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 31 states have internal predecessors, (166), 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 62 [2024-11-28 03:46:48,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:46:48,566 INFO L225 Difference]: With dead ends: 9187 [2024-11-28 03:46:48,567 INFO L226 Difference]: Without dead ends: 7154 [2024-11-28 03:46:48,572 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 758 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=700, Invalid=2960, Unknown=0, NotChecked=0, Total=3660 [2024-11-28 03:46:48,572 INFO L435 NwaCegarLoop]: 1492 mSDtfsCounter, 13893 mSDsluCounter, 9329 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13893 SdHoareTripleChecker+Valid, 10821 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:46:48,573 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13893 Valid, 10821 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:46:48,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7154 states. [2024-11-28 03:46:48,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7154 to 7112. [2024-11-28 03:46:48,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7112 states, 7110 states have (on average 1.3219409282700423) internal successors, (9399), 7111 states have internal predecessors, (9399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:48,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7112 states to 7112 states and 9399 transitions. [2024-11-28 03:46:48,863 INFO L78 Accepts]: Start accepts. Automaton has 7112 states and 9399 transitions. Word has length 62 [2024-11-28 03:46:48,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:46:48,863 INFO L471 AbstractCegarLoop]: Abstraction has 7112 states and 9399 transitions. [2024-11-28 03:46:48,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 31 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:48,863 INFO L276 IsEmpty]: Start isEmpty. Operand 7112 states and 9399 transitions. [2024-11-28 03:46:48,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 03:46:48,865 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:46:48,865 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] [2024-11-28 03:46:48,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:46:49,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:46:49,069 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:46:49,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:46:49,070 INFO L85 PathProgramCache]: Analyzing trace with hash 225757237, now seen corresponding path program 1 times [2024-11-28 03:46:49,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:46:49,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954393241] [2024-11-28 03:46:49,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:46:49,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:46:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:46:49,744 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:49,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:46:49,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954393241] [2024-11-28 03:46:49,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954393241] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:46:49,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397517164] [2024-11-28 03:46:49,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:46:49,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:46:49,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:46:49,747 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:46:49,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:46:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:46:49,871 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 03:46:49,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:46:50,368 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:50,369 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:46:51,141 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:51,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397517164] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:46:51,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:46:51,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-28 03:46:51,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790837588] [2024-11-28 03:46:51,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:46:51,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 03:46:51,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:46:51,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 03:46:51,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2024-11-28 03:46:51,143 INFO L87 Difference]: Start difference. First operand 7112 states and 9399 transitions. Second operand has 21 states, 21 states have (on average 6.285714285714286) internal successors, (132), 20 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:51,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:46:51,774 INFO L93 Difference]: Finished difference Result 12236 states and 15814 transitions. [2024-11-28 03:46:51,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:46:51,774 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.285714285714286) internal successors, (132), 20 states have internal predecessors, (132), 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 62 [2024-11-28 03:46:51,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:46:51,790 INFO L225 Difference]: With dead ends: 12236 [2024-11-28 03:46:51,791 INFO L226 Difference]: Without dead ends: 7356 [2024-11-28 03:46:51,796 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=237, Invalid=693, Unknown=0, NotChecked=0, Total=930 [2024-11-28 03:46:51,797 INFO L435 NwaCegarLoop]: 1506 mSDtfsCounter, 7555 mSDsluCounter, 4770 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7555 SdHoareTripleChecker+Valid, 6276 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:46:51,797 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7555 Valid, 6276 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:46:51,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7356 states. [2024-11-28 03:46:52,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7356 to 7236. [2024-11-28 03:46:52,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7236 states, 7234 states have (on average 1.309648880287531) internal successors, (9474), 7235 states have internal predecessors, (9474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:52,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7236 states to 7236 states and 9474 transitions. [2024-11-28 03:46:52,114 INFO L78 Accepts]: Start accepts. Automaton has 7236 states and 9474 transitions. Word has length 62 [2024-11-28 03:46:52,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:46:52,114 INFO L471 AbstractCegarLoop]: Abstraction has 7236 states and 9474 transitions. [2024-11-28 03:46:52,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.285714285714286) internal successors, (132), 20 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:52,115 INFO L276 IsEmpty]: Start isEmpty. Operand 7236 states and 9474 transitions. [2024-11-28 03:46:52,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 03:46:52,116 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:46:52,116 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] [2024-11-28 03:46:52,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:46:52,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 03:46:52,321 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:46:52,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:46:52,322 INFO L85 PathProgramCache]: Analyzing trace with hash -753982150, now seen corresponding path program 1 times [2024-11-28 03:46:52,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:46:52,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125303354] [2024-11-28 03:46:52,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:46:52,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:46:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:46:54,539 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:54,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:46:54,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125303354] [2024-11-28 03:46:54,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125303354] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:46:54,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731164185] [2024-11-28 03:46:54,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:46:54,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:46:54,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:46:54,542 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:46:54,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:46:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:46:54,698 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 03:46:54,700 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:46:55,652 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:55,652 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:46:57,336 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:57,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731164185] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:46:57,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:46:57,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 13] total 41 [2024-11-28 03:46:57,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124306591] [2024-11-28 03:46:57,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:46:57,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-28 03:46:57,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:46:57,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-28 03:46:57,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1510, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 03:46:57,345 INFO L87 Difference]: Start difference. First operand 7236 states and 9474 transitions. Second operand has 41 states, 41 states have (on average 4.073170731707317) internal successors, (167), 41 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:47:16,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:47:16,703 INFO L93 Difference]: Finished difference Result 14930 states and 18991 transitions. [2024-11-28 03:47:16,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2024-11-28 03:47:16,704 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.073170731707317) internal successors, (167), 41 states have internal predecessors, (167), 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 63 [2024-11-28 03:47:16,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:47:16,728 INFO L225 Difference]: With dead ends: 14930 [2024-11-28 03:47:16,728 INFO L226 Difference]: Without dead ends: 11835 [2024-11-28 03:47:16,736 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7309 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=4892, Invalid=17458, Unknown=0, NotChecked=0, Total=22350 [2024-11-28 03:47:16,737 INFO L435 NwaCegarLoop]: 1608 mSDtfsCounter, 19628 mSDsluCounter, 23939 mSDsCounter, 0 mSdLazyCounter, 1774 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19628 SdHoareTripleChecker+Valid, 25547 SdHoareTripleChecker+Invalid, 1876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:47:16,737 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19628 Valid, 25547 Invalid, 1876 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [102 Valid, 1774 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-28 03:47:16,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11835 states. [2024-11-28 03:47:17,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11835 to 7888. [2024-11-28 03:47:17,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7888 states, 7886 states have (on average 1.2983768704032463) internal successors, (10239), 7887 states have internal predecessors, (10239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:47:17,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7888 states to 7888 states and 10239 transitions. [2024-11-28 03:47:17,410 INFO L78 Accepts]: Start accepts. Automaton has 7888 states and 10239 transitions. Word has length 63 [2024-11-28 03:47:17,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:47:17,411 INFO L471 AbstractCegarLoop]: Abstraction has 7888 states and 10239 transitions. [2024-11-28 03:47:17,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.073170731707317) internal successors, (167), 41 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:47:17,411 INFO L276 IsEmpty]: Start isEmpty. Operand 7888 states and 10239 transitions. [2024-11-28 03:47:17,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-28 03:47:17,412 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:47:17,413 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] [2024-11-28 03:47:17,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 03:47:17,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:47:17,614 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:47:17,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:47:17,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1905434029, now seen corresponding path program 1 times [2024-11-28 03:47:17,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:47:17,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867001381] [2024-11-28 03:47:17,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:47:17,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:47:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:47:19,070 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:47:19,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:47:19,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867001381] [2024-11-28 03:47:19,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867001381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:47:19,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965185043] [2024-11-28 03:47:19,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:47:19,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:47:19,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:47:19,074 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:47:19,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:47:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:47:19,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-28 03:47:19,196 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:47:22,644 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:47:22,645 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:47:27,233 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:47:27,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965185043] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:47:27,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:47:27,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23, 18] total 59 [2024-11-28 03:47:27,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108860282] [2024-11-28 03:47:27,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:47:27,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-28 03:47:27,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:47:27,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-28 03:47:27,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=3033, Unknown=0, NotChecked=0, Total=3422 [2024-11-28 03:47:27,238 INFO L87 Difference]: Start difference. First operand 7888 states and 10239 transitions. Second operand has 59 states, 59 states have (on average 2.9491525423728815) internal successors, (174), 59 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) [2024-11-28 03:48:01,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:48:01,483 INFO L93 Difference]: Finished difference Result 15330 states and 19423 transitions. [2024-11-28 03:48:01,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2024-11-28 03:48:01,483 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.9491525423728815) internal successors, (174), 59 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 64 [2024-11-28 03:48:01,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:48:01,513 INFO L225 Difference]: With dead ends: 15330 [2024-11-28 03:48:01,513 INFO L226 Difference]: Without dead ends: 12356 [2024-11-28 03:48:01,524 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8489 ImplicationChecksByTransitivity, 33.9s TimeCoverageRelationStatistics Valid=5221, Invalid=23171, Unknown=0, NotChecked=0, Total=28392 [2024-11-28 03:48:01,526 INFO L435 NwaCegarLoop]: 1545 mSDtfsCounter, 33634 mSDsluCounter, 22496 mSDsCounter, 0 mSdLazyCounter, 2642 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33634 SdHoareTripleChecker+Valid, 24041 SdHoareTripleChecker+Invalid, 2802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 2642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:48:01,528 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33634 Valid, 24041 Invalid, 2802 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [160 Valid, 2642 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-28 03:48:01,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12356 states. [2024-11-28 03:48:02,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12356 to 9241. [2024-11-28 03:48:02,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9241 states, 9239 states have (on average 1.2855287368762853) internal successors, (11877), 9240 states have internal predecessors, (11877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:48:02,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9241 states to 9241 states and 11877 transitions. [2024-11-28 03:48:02,371 INFO L78 Accepts]: Start accepts. Automaton has 9241 states and 11877 transitions. Word has length 64 [2024-11-28 03:48:02,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:48:02,372 INFO L471 AbstractCegarLoop]: Abstraction has 9241 states and 11877 transitions. [2024-11-28 03:48:02,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.9491525423728815) internal successors, (174), 59 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) [2024-11-28 03:48:02,372 INFO L276 IsEmpty]: Start isEmpty. Operand 9241 states and 11877 transitions. [2024-11-28 03:48:02,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-28 03:48:02,373 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:48:02,373 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] [2024-11-28 03:48:02,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 03:48:02,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:48:02,580 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:48:02,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:48:02,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1624666796, now seen corresponding path program 1 times [2024-11-28 03:48:02,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:48:02,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257152154] [2024-11-28 03:48:02,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:48:02,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:48:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:48:03,461 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:48:03,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:48:03,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257152154] [2024-11-28 03:48:03,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257152154] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:48:03,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647593184] [2024-11-28 03:48:03,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:48:03,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:48:03,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:48:03,464 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:48:03,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:48:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:48:03,607 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-28 03:48:03,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:48:06,131 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:48:06,132 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:48:11,223 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:48:11,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647593184] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:48:11,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:48:11,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 19, 23] total 53 [2024-11-28 03:48:11,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512017702] [2024-11-28 03:48:11,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:48:11,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-28 03:48:11,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:48:11,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-28 03:48:11,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=436, Invalid=2320, Unknown=0, NotChecked=0, Total=2756 [2024-11-28 03:48:11,228 INFO L87 Difference]: Start difference. First operand 9241 states and 11877 transitions. Second operand has 53 states, 53 states have (on average 3.1320754716981134) internal successors, (166), 53 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:48:28,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:48:28,169 INFO L93 Difference]: Finished difference Result 15214 states and 19226 transitions. [2024-11-28 03:48:28,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-11-28 03:48:28,170 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.1320754716981134) internal successors, (166), 53 states have internal predecessors, (166), 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 65 [2024-11-28 03:48:28,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:48:28,191 INFO L225 Difference]: With dead ends: 15214 [2024-11-28 03:48:28,191 INFO L226 Difference]: Without dead ends: 11498 [2024-11-28 03:48:28,197 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5206 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=3671, Invalid=13359, Unknown=0, NotChecked=0, Total=17030 [2024-11-28 03:48:28,199 INFO L435 NwaCegarLoop]: 1541 mSDtfsCounter, 21766 mSDsluCounter, 15842 mSDsCounter, 0 mSdLazyCounter, 1421 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21766 SdHoareTripleChecker+Valid, 17383 SdHoareTripleChecker+Invalid, 1529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:48:28,200 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21766 Valid, 17383 Invalid, 1529 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [108 Valid, 1421 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-28 03:48:28,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11498 states. [2024-11-28 03:48:29,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11498 to 7800. [2024-11-28 03:48:29,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7800 states, 7798 states have (on average 1.29738394460118) internal successors, (10117), 7799 states have internal predecessors, (10117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:48:29,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7800 states to 7800 states and 10117 transitions. [2024-11-28 03:48:29,091 INFO L78 Accepts]: Start accepts. Automaton has 7800 states and 10117 transitions. Word has length 65 [2024-11-28 03:48:29,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:48:29,091 INFO L471 AbstractCegarLoop]: Abstraction has 7800 states and 10117 transitions. [2024-11-28 03:48:29,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.1320754716981134) internal successors, (166), 53 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:48:29,091 INFO L276 IsEmpty]: Start isEmpty. Operand 7800 states and 10117 transitions. [2024-11-28 03:48:29,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-28 03:48:29,092 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:48:29,093 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] [2024-11-28 03:48:29,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 03:48:29,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:48:29,297 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:48:29,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:48:29,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1854571664, now seen corresponding path program 1 times [2024-11-28 03:48:29,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:48:29,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055328777] [2024-11-28 03:48:29,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:48:29,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:48:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:48:32,225 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:48:32,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:48:32,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055328777] [2024-11-28 03:48:32,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055328777] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:48:32,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444251191] [2024-11-28 03:48:32,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:48:32,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:48:32,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:48:32,227 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:48:32,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:48:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:48:32,390 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 03:48:32,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:48:34,401 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:48:34,402 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:48:35,958 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:48:35,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444251191] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:48:35,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:48:35,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 16] total 48 [2024-11-28 03:48:35,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532247311] [2024-11-28 03:48:35,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:48:35,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-28 03:48:35,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:48:35,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-28 03:48:35,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2057, Unknown=0, NotChecked=0, Total=2256 [2024-11-28 03:48:35,960 INFO L87 Difference]: Start difference. First operand 7800 states and 10117 transitions. Second operand has 48 states, 48 states have (on average 3.5208333333333335) internal successors, (169), 48 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:48:54,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:48:54,101 INFO L93 Difference]: Finished difference Result 13265 states and 16833 transitions. [2024-11-28 03:48:54,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-28 03:48:54,102 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.5208333333333335) internal successors, (169), 48 states have internal predecessors, (169), 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 65 [2024-11-28 03:48:54,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:48:54,111 INFO L225 Difference]: With dead ends: 13265 [2024-11-28 03:48:54,111 INFO L226 Difference]: Without dead ends: 11088 [2024-11-28 03:48:54,115 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4325 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=3009, Invalid=13247, Unknown=0, NotChecked=0, Total=16256 [2024-11-28 03:48:54,117 INFO L435 NwaCegarLoop]: 1556 mSDtfsCounter, 24763 mSDsluCounter, 28443 mSDsCounter, 0 mSdLazyCounter, 2501 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24763 SdHoareTripleChecker+Valid, 29999 SdHoareTripleChecker+Invalid, 2651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 2501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:48:54,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24763 Valid, 29999 Invalid, 2651 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [150 Valid, 2501 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-28 03:48:54,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11088 states. [2024-11-28 03:48:54,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11088 to 7662. [2024-11-28 03:48:54,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7662 states, 7660 states have (on average 1.2980417754569191) internal successors, (9943), 7661 states have internal predecessors, (9943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:48:54,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7662 states to 7662 states and 9943 transitions. [2024-11-28 03:48:54,924 INFO L78 Accepts]: Start accepts. Automaton has 7662 states and 9943 transitions. Word has length 65 [2024-11-28 03:48:54,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:48:54,924 INFO L471 AbstractCegarLoop]: Abstraction has 7662 states and 9943 transitions. [2024-11-28 03:48:54,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.5208333333333335) internal successors, (169), 48 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:48:54,925 INFO L276 IsEmpty]: Start isEmpty. Operand 7662 states and 9943 transitions. [2024-11-28 03:48:54,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 03:48:54,926 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:48:54,926 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] [2024-11-28 03:48:54,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 03:48:55,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:48:55,127 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:48:55,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:48:55,128 INFO L85 PathProgramCache]: Analyzing trace with hash -832715437, now seen corresponding path program 1 times [2024-11-28 03:48:55,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:48:55,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625133934] [2024-11-28 03:48:55,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:48:55,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:48:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:48:57,321 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:48:57,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:48:57,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625133934] [2024-11-28 03:48:57,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625133934] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:48:57,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888159520] [2024-11-28 03:48:57,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:48:57,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:48:57,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:48:57,324 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:48:57,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:48:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:48:57,507 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-28 03:48:57,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:49:01,942 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:49:01,942 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:49:12,262 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:49:12,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888159520] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:49:12,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:49:12,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 24, 25] total 65 [2024-11-28 03:49:12,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492758756] [2024-11-28 03:49:12,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:49:12,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-28 03:49:12,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:49:12,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-28 03:49:12,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=3736, Unknown=0, NotChecked=0, Total=4160 [2024-11-28 03:49:12,265 INFO L87 Difference]: Start difference. First operand 7662 states and 9943 transitions. Second operand has 65 states, 65 states have (on average 2.6769230769230767) internal successors, (174), 65 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) [2024-11-28 03:50:28,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:50:28,886 INFO L93 Difference]: Finished difference Result 26288 states and 32736 transitions. [2024-11-28 03:50:28,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2024-11-28 03:50:28,887 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.6769230769230767) internal successors, (174), 65 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 66 [2024-11-28 03:50:28,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:50:28,915 INFO L225 Difference]: With dead ends: 26288 [2024-11-28 03:50:28,915 INFO L226 Difference]: Without dead ends: 20656 [2024-11-28 03:50:28,926 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13961 ImplicationChecksByTransitivity, 73.9s TimeCoverageRelationStatistics Valid=8490, Invalid=32112, Unknown=0, NotChecked=0, Total=40602 [2024-11-28 03:50:28,926 INFO L435 NwaCegarLoop]: 1582 mSDtfsCounter, 21931 mSDsluCounter, 27885 mSDsCounter, 0 mSdLazyCounter, 3674 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21931 SdHoareTripleChecker+Valid, 29467 SdHoareTripleChecker+Invalid, 3817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 3674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:50:28,927 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21931 Valid, 29467 Invalid, 3817 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [143 Valid, 3674 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-11-28 03:50:28,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20656 states. [2024-11-28 03:50:30,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20656 to 9120. [2024-11-28 03:50:30,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9120 states, 9118 states have (on average 1.2887694669883747) internal successors, (11751), 9119 states have internal predecessors, (11751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:50:30,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9120 states to 9120 states and 11751 transitions. [2024-11-28 03:50:30,500 INFO L78 Accepts]: Start accepts. Automaton has 9120 states and 11751 transitions. Word has length 66 [2024-11-28 03:50:30,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:50:30,501 INFO L471 AbstractCegarLoop]: Abstraction has 9120 states and 11751 transitions. [2024-11-28 03:50:30,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.6769230769230767) internal successors, (174), 65 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) [2024-11-28 03:50:30,501 INFO L276 IsEmpty]: Start isEmpty. Operand 9120 states and 11751 transitions. [2024-11-28 03:50:30,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-28 03:50:30,502 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:50:30,503 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 03:50:30,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 03:50:30,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:50:30,703 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:50:30,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:50:30,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1600635228, now seen corresponding path program 1 times [2024-11-28 03:50:30,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:50:30,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299631455] [2024-11-28 03:50:30,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:50:30,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:50:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:50:30,806 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:50:30,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:50:30,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299631455] [2024-11-28 03:50:30,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299631455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:50:30,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:50:30,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:50:30,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435487747] [2024-11-28 03:50:30,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:50:30,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:50:30,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:50:30,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:50:30,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:50:30,811 INFO L87 Difference]: Start difference. First operand 9120 states and 11751 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:50:37,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:50:37,043 INFO L93 Difference]: Finished difference Result 12126 states and 16678 transitions. [2024-11-28 03:50:37,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:50:37,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 87 [2024-11-28 03:50:37,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:50:37,052 INFO L225 Difference]: With dead ends: 12126 [2024-11-28 03:50:37,052 INFO L226 Difference]: Without dead ends: 10622 [2024-11-28 03:50:37,054 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:50:37,055 INFO L435 NwaCegarLoop]: 1221 mSDtfsCounter, 753 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2412 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 3093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 2412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:50:37,055 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 1301 Invalid, 3093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 2412 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-28 03:50:37,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10622 states. [2024-11-28 03:50:38,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10622 to 10622. [2024-11-28 03:50:38,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10622 states, 10620 states have (on average 1.3095103578154426) internal successors, (13907), 10621 states have internal predecessors, (13907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:50:38,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10622 states to 10622 states and 13907 transitions. [2024-11-28 03:50:38,246 INFO L78 Accepts]: Start accepts. Automaton has 10622 states and 13907 transitions. Word has length 87 [2024-11-28 03:50:38,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:50:38,247 INFO L471 AbstractCegarLoop]: Abstraction has 10622 states and 13907 transitions. [2024-11-28 03:50:38,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:50:38,247 INFO L276 IsEmpty]: Start isEmpty. Operand 10622 states and 13907 transitions. [2024-11-28 03:50:38,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-28 03:50:38,249 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:50:38,251 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 03:50:38,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-28 03:50:38,251 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:50:38,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:50:38,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1504683791, now seen corresponding path program 1 times [2024-11-28 03:50:38,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:50:38,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712118613] [2024-11-28 03:50:38,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:50:38,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:50:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:50:38,389 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:50:38,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:50:38,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712118613] [2024-11-28 03:50:38,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712118613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:50:38,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:50:38,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:50:38,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522866137] [2024-11-28 03:50:38,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:50:38,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:50:38,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:50:38,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:50:38,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:50:38,391 INFO L87 Difference]: Start difference. First operand 10622 states and 13907 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:50:44,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:50:44,317 INFO L93 Difference]: Finished difference Result 16634 states and 23147 transitions. [2024-11-28 03:50:44,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:50:44,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 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 90 [2024-11-28 03:50:44,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:50:44,332 INFO L225 Difference]: With dead ends: 16634 [2024-11-28 03:50:44,332 INFO L226 Difference]: Without dead ends: 13628 [2024-11-28 03:50:44,336 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 [2024-11-28 03:50:44,336 INFO L435 NwaCegarLoop]: 565 mSDtfsCounter, 798 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2272 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 2923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:50:44,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 572 Invalid, 2923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2272 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-28 03:50:44,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13628 states. [2024-11-28 03:50:45,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13628 to 13626. [2024-11-28 03:50:45,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13626 states, 13624 states have (on average 1.283617146212566) internal successors, (17488), 13625 states have internal predecessors, (17488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:50:45,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13626 states to 13626 states and 17488 transitions. [2024-11-28 03:50:45,530 INFO L78 Accepts]: Start accepts. Automaton has 13626 states and 17488 transitions. Word has length 90 [2024-11-28 03:50:45,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:50:45,530 INFO L471 AbstractCegarLoop]: Abstraction has 13626 states and 17488 transitions. [2024-11-28 03:50:45,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:50:45,530 INFO L276 IsEmpty]: Start isEmpty. Operand 13626 states and 17488 transitions. [2024-11-28 03:50:45,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-28 03:50:45,531 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:50:45,532 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 03:50:45,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-28 03:50:45,532 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:50:45,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:50:45,532 INFO L85 PathProgramCache]: Analyzing trace with hash -592058394, now seen corresponding path program 1 times [2024-11-28 03:50:45,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:50:45,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25085319] [2024-11-28 03:50:45,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:50:45,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:50:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:50:45,652 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:50:45,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:50:45,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25085319] [2024-11-28 03:50:45,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25085319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:50:45,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:50:45,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:50:45,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315338647] [2024-11-28 03:50:45,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:50:45,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:50:45,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:50:45,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:50:45,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:50:45,654 INFO L87 Difference]: Start difference. First operand 13626 states and 17488 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:50:50,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:50:50,962 INFO L93 Difference]: Finished difference Result 25646 states and 33890 transitions. [2024-11-28 03:50:50,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:50:50,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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 91 [2024-11-28 03:50:50,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:50:50,975 INFO L225 Difference]: With dead ends: 25646 [2024-11-28 03:50:50,975 INFO L226 Difference]: Without dead ends: 19636 [2024-11-28 03:50:50,979 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 [2024-11-28 03:50:50,979 INFO L435 NwaCegarLoop]: 660 mSDtfsCounter, 987 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2387 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 2937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:50:50,979 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [987 Valid, 667 Invalid, 2937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2387 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-28 03:50:50,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19636 states. [2024-11-28 03:50:51,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19636 to 19634. [2024-11-28 03:50:51,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19634 states, 19632 states have (on average 1.2562143439282805) internal successors, (24662), 19633 states have internal predecessors, (24662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:50:51,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19634 states to 19634 states and 24662 transitions. [2024-11-28 03:50:51,993 INFO L78 Accepts]: Start accepts. Automaton has 19634 states and 24662 transitions. Word has length 91 [2024-11-28 03:50:51,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:50:51,993 INFO L471 AbstractCegarLoop]: Abstraction has 19634 states and 24662 transitions. [2024-11-28 03:50:51,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:50:51,993 INFO L276 IsEmpty]: Start isEmpty. Operand 19634 states and 24662 transitions. [2024-11-28 03:50:51,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-28 03:50:51,995 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:50:51,995 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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] [2024-11-28 03:50:51,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-28 03:50:51,995 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:50:51,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:50:51,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1015323762, now seen corresponding path program 1 times [2024-11-28 03:50:51,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:50:51,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125188430] [2024-11-28 03:50:51,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:50:51,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:50:52,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:50:53,012 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 25 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:50:53,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:50:53,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125188430] [2024-11-28 03:50:53,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125188430] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:50:53,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516544821] [2024-11-28 03:50:53,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:50:53,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:50:53,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:50:53,015 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:50:53,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 03:50:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:50:53,182 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 03:50:53,184 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:50:54,318 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 20 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:50:54,318 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:50:55,599 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 17 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:50:55,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516544821] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:50:55,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:50:55,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 11] total 37 [2024-11-28 03:50:55,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963941215] [2024-11-28 03:50:55,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:50:55,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-28 03:50:55,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:50:55,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-28 03:50:55,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1209, Unknown=0, NotChecked=0, Total=1332 [2024-11-28 03:50:55,600 INFO L87 Difference]: Start difference. First operand 19634 states and 24662 transitions. Second operand has 37 states, 37 states have (on average 7.945945945945946) internal successors, (294), 37 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:51:07,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:51:07,316 INFO L93 Difference]: Finished difference Result 28653 states and 35685 transitions. [2024-11-28 03:51:07,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2024-11-28 03:51:07,316 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 7.945945945945946) internal successors, (294), 37 states have internal predecessors, (294), 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 104 [2024-11-28 03:51:07,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:51:07,341 INFO L225 Difference]: With dead ends: 28653 [2024-11-28 03:51:07,341 INFO L226 Difference]: Without dead ends: 21997 [2024-11-28 03:51:07,351 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6243 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=3657, Invalid=16935, Unknown=0, NotChecked=0, Total=20592 [2024-11-28 03:51:07,351 INFO L435 NwaCegarLoop]: 1553 mSDtfsCounter, 22089 mSDsluCounter, 20523 mSDsCounter, 0 mSdLazyCounter, 1958 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22089 SdHoareTripleChecker+Valid, 22076 SdHoareTripleChecker+Invalid, 2049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:51:07,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22089 Valid, 22076 Invalid, 2049 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [91 Valid, 1958 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 03:51:07,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21997 states. [2024-11-28 03:51:08,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21997 to 19553. [2024-11-28 03:51:08,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19553 states, 19551 states have (on average 1.2516495319932484) internal successors, (24471), 19552 states have internal predecessors, (24471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:51:08,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19553 states to 19553 states and 24471 transitions. [2024-11-28 03:51:08,351 INFO L78 Accepts]: Start accepts. Automaton has 19553 states and 24471 transitions. Word has length 104 [2024-11-28 03:51:08,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:51:08,351 INFO L471 AbstractCegarLoop]: Abstraction has 19553 states and 24471 transitions. [2024-11-28 03:51:08,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 7.945945945945946) internal successors, (294), 37 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:51:08,351 INFO L276 IsEmpty]: Start isEmpty. Operand 19553 states and 24471 transitions. [2024-11-28 03:51:08,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-28 03:51:08,353 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:51:08,354 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-28 03:51:08,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 03:51:08,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 03:51:08,558 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:51:08,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:51:08,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1992950965, now seen corresponding path program 1 times [2024-11-28 03:51:08,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:51:08,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066895825] [2024-11-28 03:51:08,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:51:08,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:51:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:51:09,374 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 22 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:51:09,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:51:09,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066895825] [2024-11-28 03:51:09,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066895825] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:51:09,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791125688] [2024-11-28 03:51:09,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:51:09,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:51:09,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:51:09,378 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:51:09,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 03:51:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:51:09,546 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 03:51:09,549 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:51:11,390 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 30 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:51:11,390 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:51:16,510 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 30 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:51:16,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791125688] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:51:16,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:51:16,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 18] total 48 [2024-11-28 03:51:16,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630406441] [2024-11-28 03:51:16,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:51:16,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-28 03:51:16,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:51:16,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-28 03:51:16,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=2063, Unknown=0, NotChecked=0, Total=2256 [2024-11-28 03:51:16,512 INFO L87 Difference]: Start difference. First operand 19553 states and 24471 transitions. Second operand has 48 states, 48 states have (on average 6.0625) internal successors, (291), 48 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:51:36,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:51:36,902 INFO L93 Difference]: Finished difference Result 30579 states and 37861 transitions. [2024-11-28 03:51:36,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2024-11-28 03:51:36,902 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 6.0625) internal successors, (291), 48 states have internal predecessors, (291), 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 105 [2024-11-28 03:51:36,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:51:36,923 INFO L225 Difference]: With dead ends: 30579 [2024-11-28 03:51:36,924 INFO L226 Difference]: Without dead ends: 25390 [2024-11-28 03:51:36,931 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6977 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=4168, Invalid=19088, Unknown=0, NotChecked=0, Total=23256 [2024-11-28 03:51:36,931 INFO L435 NwaCegarLoop]: 1564 mSDtfsCounter, 29557 mSDsluCounter, 20756 mSDsCounter, 0 mSdLazyCounter, 2021 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29557 SdHoareTripleChecker+Valid, 22320 SdHoareTripleChecker+Invalid, 2176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 2021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:51:36,932 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29557 Valid, 22320 Invalid, 2176 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [155 Valid, 2021 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-28 03:51:36,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25390 states. [2024-11-28 03:51:38,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25390 to 20910. [2024-11-28 03:51:38,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20910 states, 20908 states have (on average 1.2416299980868568) internal successors, (25960), 20909 states have internal predecessors, (25960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:51:38,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20910 states to 20910 states and 25960 transitions. [2024-11-28 03:51:38,082 INFO L78 Accepts]: Start accepts. Automaton has 20910 states and 25960 transitions. Word has length 105 [2024-11-28 03:51:38,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:51:38,082 INFO L471 AbstractCegarLoop]: Abstraction has 20910 states and 25960 transitions. [2024-11-28 03:51:38,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 6.0625) internal successors, (291), 48 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:51:38,082 INFO L276 IsEmpty]: Start isEmpty. Operand 20910 states and 25960 transitions. [2024-11-28 03:51:38,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-28 03:51:38,084 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:51:38,084 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 03:51:38,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 03:51:38,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 03:51:38,285 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:51:38,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:51:38,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1395528875, now seen corresponding path program 1 times [2024-11-28 03:51:38,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:51:38,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017249643] [2024-11-28 03:51:38,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:51:38,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:51:38,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:51:39,371 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:51:39,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:51:39,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017249643] [2024-11-28 03:51:39,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017249643] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:51:39,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219885003] [2024-11-28 03:51:39,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:51:39,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:51:39,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:51:39,374 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:51:39,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 03:51:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:51:39,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-28 03:51:39,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:51:43,043 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 25 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:51:43,043 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:51:51,820 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 25 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:51:51,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219885003] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:51:51,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:51:51,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 27, 24] total 69 [2024-11-28 03:51:51,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581963627] [2024-11-28 03:51:51,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:51:51,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-28 03:51:51,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:51:51,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-28 03:51:51,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=4257, Unknown=0, NotChecked=0, Total=4692 [2024-11-28 03:51:51,822 INFO L87 Difference]: Start difference. First operand 20910 states and 25960 transitions. Second operand has 69 states, 69 states have (on average 4.217391304347826) internal successors, (291), 69 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:54:54,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:54:54,953 INFO L93 Difference]: Finished difference Result 31983 states and 39192 transitions. [2024-11-28 03:54:54,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 298 states. [2024-11-28 03:54:54,953 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 4.217391304347826) internal successors, (291), 69 states have internal predecessors, (291), 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 105 [2024-11-28 03:54:54,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:54:54,977 INFO L225 Difference]: With dead ends: 31983 [2024-11-28 03:54:54,977 INFO L226 Difference]: Without dead ends: 29073 [2024-11-28 03:54:54,987 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 361 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49547 ImplicationChecksByTransitivity, 177.2s TimeCoverageRelationStatistics Valid=14249, Invalid=117157, Unknown=0, NotChecked=0, Total=131406 [2024-11-28 03:54:54,988 INFO L435 NwaCegarLoop]: 1682 mSDtfsCounter, 23735 mSDsluCounter, 50055 mSDsCounter, 0 mSdLazyCounter, 6083 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23735 SdHoareTripleChecker+Valid, 51737 SdHoareTripleChecker+Invalid, 6344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 6083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:54:54,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23735 Valid, 51737 Invalid, 6344 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [261 Valid, 6083 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2024-11-28 03:54:55,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29073 states. [2024-11-28 03:54:57,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29073 to 26314. [2024-11-28 03:54:57,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26314 states, 26312 states have (on average 1.231795378534509) internal successors, (32411), 26313 states have internal predecessors, (32411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:54:57,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26314 states to 26314 states and 32411 transitions. [2024-11-28 03:54:57,428 INFO L78 Accepts]: Start accepts. Automaton has 26314 states and 32411 transitions. Word has length 105 [2024-11-28 03:54:57,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:54:57,428 INFO L471 AbstractCegarLoop]: Abstraction has 26314 states and 32411 transitions. [2024-11-28 03:54:57,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 4.217391304347826) internal successors, (291), 69 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:54:57,429 INFO L276 IsEmpty]: Start isEmpty. Operand 26314 states and 32411 transitions. [2024-11-28 03:54:57,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-28 03:54:57,431 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:54:57,431 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 03:54:57,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 03:54:57,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 03:54:57,635 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:54:57,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:54:57,635 INFO L85 PathProgramCache]: Analyzing trace with hash -432087399, now seen corresponding path program 1 times [2024-11-28 03:54:57,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:54:57,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86181117] [2024-11-28 03:54:57,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:54:57,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:54:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:54:58,815 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 16 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:54:58,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:54:58,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86181117] [2024-11-28 03:54:58,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86181117] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:54:58,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678458106] [2024-11-28 03:54:58,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:54:58,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:54:58,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:54:58,818 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:54:58,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 03:54:59,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:54:59,024 INFO L256 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-28 03:54:59,029 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:55:02,928 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 34 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:55:02,929 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:55:10,094 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 30 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:55:10,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678458106] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:55:10,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:55:10,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 24, 23] total 64 [2024-11-28 03:55:10,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206282295] [2024-11-28 03:55:10,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:55:10,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-28 03:55:10,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:55:10,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-28 03:55:10,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=3629, Unknown=0, NotChecked=0, Total=4032 [2024-11-28 03:55:10,096 INFO L87 Difference]: Start difference. First operand 26314 states and 32411 transitions. Second operand has 64 states, 64 states have (on average 4.609375) internal successors, (295), 64 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:28,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:56:28,477 INFO L93 Difference]: Finished difference Result 44389 states and 53967 transitions. [2024-11-28 03:56:28,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2024-11-28 03:56:28,478 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.609375) internal successors, (295), 64 states have internal predecessors, (295), 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 105 [2024-11-28 03:56:28,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:56:28,506 INFO L225 Difference]: With dead ends: 44389 [2024-11-28 03:56:28,506 INFO L226 Difference]: Without dead ends: 38282 [2024-11-28 03:56:28,516 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 286 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29407 ImplicationChecksByTransitivity, 72.8s TimeCoverageRelationStatistics Valid=10652, Invalid=72004, Unknown=0, NotChecked=0, Total=82656 [2024-11-28 03:56:28,516 INFO L435 NwaCegarLoop]: 1664 mSDtfsCounter, 29311 mSDsluCounter, 38309 mSDsCounter, 0 mSdLazyCounter, 4614 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29311 SdHoareTripleChecker+Valid, 39973 SdHoareTripleChecker+Invalid, 4789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 4614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:56:28,516 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29311 Valid, 39973 Invalid, 4789 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [175 Valid, 4614 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-28 03:56:28,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38282 states. [2024-11-28 03:56:31,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38282 to 30703. [2024-11-28 03:56:31,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30703 states, 30701 states have (on average 1.2251718185075404) internal successors, (37614), 30702 states have internal predecessors, (37614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:31,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30703 states to 30703 states and 37614 transitions. [2024-11-28 03:56:31,421 INFO L78 Accepts]: Start accepts. Automaton has 30703 states and 37614 transitions. Word has length 105 [2024-11-28 03:56:31,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:56:31,421 INFO L471 AbstractCegarLoop]: Abstraction has 30703 states and 37614 transitions. [2024-11-28 03:56:31,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.609375) internal successors, (295), 64 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:31,421 INFO L276 IsEmpty]: Start isEmpty. Operand 30703 states and 37614 transitions. [2024-11-28 03:56:31,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-28 03:56:31,422 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:56:31,423 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-28 03:56:31,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 03:56:31,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:56:31,623 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:56:31,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:56:31,624 INFO L85 PathProgramCache]: Analyzing trace with hash 57555632, now seen corresponding path program 1 times [2024-11-28 03:56:31,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:56:31,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349766360] [2024-11-28 03:56:31,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:31,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:56:31,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:33,009 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:56:33,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:56:33,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349766360] [2024-11-28 03:56:33,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349766360] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:56:33,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458587471] [2024-11-28 03:56:33,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:33,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:56:33,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:56:33,011 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:56:33,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 03:56:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:33,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-28 03:56:33,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:56:36,915 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:56:36,915 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:56:43,911 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:56:43,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458587471] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:56:43,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:56:43,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 27, 26] total 71 [2024-11-28 03:56:43,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685718831] [2024-11-28 03:56:43,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:56:43,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-28 03:56:43,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:56:43,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-28 03:56:43,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=513, Invalid=4457, Unknown=0, NotChecked=0, Total=4970 [2024-11-28 03:56:43,913 INFO L87 Difference]: Start difference. First operand 30703 states and 37614 transitions. Second operand has 71 states, 71 states have (on average 4.211267605633803) internal successors, (299), 71 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:22,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:57:22,334 INFO L93 Difference]: Finished difference Result 38701 states and 47131 transitions. [2024-11-28 03:57:22,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2024-11-28 03:57:22,335 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 4.211267605633803) internal successors, (299), 71 states have internal predecessors, (299), 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 106 [2024-11-28 03:57:22,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:57:22,367 INFO L225 Difference]: With dead ends: 38701 [2024-11-28 03:57:22,367 INFO L226 Difference]: Without dead ends: 34490 [2024-11-28 03:57:22,375 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12054 ImplicationChecksByTransitivity, 34.0s TimeCoverageRelationStatistics Valid=6081, Invalid=33321, Unknown=0, NotChecked=0, Total=39402 [2024-11-28 03:57:22,375 INFO L435 NwaCegarLoop]: 1587 mSDtfsCounter, 27016 mSDsluCounter, 31666 mSDsCounter, 0 mSdLazyCounter, 2687 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27016 SdHoareTripleChecker+Valid, 33253 SdHoareTripleChecker+Invalid, 2843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 2687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:57:22,376 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27016 Valid, 33253 Invalid, 2843 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [156 Valid, 2687 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-28 03:57:22,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34490 states. [2024-11-28 03:57:26,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34490 to 32642. [2024-11-28 03:57:26,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32642 states, 32640 states have (on average 1.2236213235294118) internal successors, (39939), 32641 states have internal predecessors, (39939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:26,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32642 states to 32642 states and 39939 transitions. [2024-11-28 03:57:26,561 INFO L78 Accepts]: Start accepts. Automaton has 32642 states and 39939 transitions. Word has length 106 [2024-11-28 03:57:26,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:57:26,561 INFO L471 AbstractCegarLoop]: Abstraction has 32642 states and 39939 transitions. [2024-11-28 03:57:26,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 4.211267605633803) internal successors, (299), 71 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:26,561 INFO L276 IsEmpty]: Start isEmpty. Operand 32642 states and 39939 transitions. [2024-11-28 03:57:26,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-28 03:57:26,562 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:57:26,562 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-28 03:57:26,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 03:57:26,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-28 03:57:26,763 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:57:26,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:26,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1775421751, now seen corresponding path program 1 times [2024-11-28 03:57:26,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:26,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737932610] [2024-11-28 03:57:26,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:26,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:28,803 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:57:28,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:28,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737932610] [2024-11-28 03:57:28,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737932610] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:57:28,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269859959] [2024-11-28 03:57:28,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:28,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:57:28,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:57:28,806 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:57:28,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fca7417d-41d2-4ce1-aea6-1e13a8ee0bf7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 03:57:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:28,957 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 03:57:28,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:57:31,608 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 26 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:57:31,609 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:57:35,418 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 23 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:57:35,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269859959] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:57:35,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:57:35,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18, 17] total 54 [2024-11-28 03:57:35,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912823223] [2024-11-28 03:57:35,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:57:35,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-28 03:57:35,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:35,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-28 03:57:35,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=2628, Unknown=0, NotChecked=0, Total=2862 [2024-11-28 03:57:35,423 INFO L87 Difference]: Start difference. First operand 32642 states and 39939 transitions. Second operand has 54 states, 54 states have (on average 5.333333333333333) internal successors, (288), 54 states have internal predecessors, (288), 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)