./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.4.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d6c027-6bf7-4b57-85c5-3f2fbe934c2a/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d6c027-6bf7-4b57-85c5-3f2fbe934c2a/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d6c027-6bf7-4b57-85c5-3f2fbe934c2a/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d6c027-6bf7-4b57-85c5-3f2fbe934c2a/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.4.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d6c027-6bf7-4b57-85c5-3f2fbe934c2a/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d6c027-6bf7-4b57-85c5-3f2fbe934c2a/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ef8bb8194696f3b95c83f24c1d92fe756485a0c18d37a77cf05fc67573b50cdb --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:33:00,431 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:33:00,548 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d6c027-6bf7-4b57-85c5-3f2fbe934c2a/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-23 23:33:00,556 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:33:00,556 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:33:00,602 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:33:00,604 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:33:00,604 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:33:00,605 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:33:00,605 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:33:00,606 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:33:00,606 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:33:00,606 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:33:00,607 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:33:00,608 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:33:00,608 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:33:00,608 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:33:00,608 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:33:00,608 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:33:00,609 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:33:00,610 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:33:00,610 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:33:00,610 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:33:00,610 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:33:00,610 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:33:00,610 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:33:00,610 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:33:00,611 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:33:00,611 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:33:00,611 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:33:00,611 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:33:00,611 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:33:00,611 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:33:00,611 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:33:00,611 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:33:00,612 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:33:00,612 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:33:00,612 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:33:00,612 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:33:00,612 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:33:00,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:33:00,612 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:33:00,612 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:33:00,612 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:33:00,612 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:33:00,612 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_f4d6c027-6bf7-4b57-85c5-3f2fbe934c2a/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef8bb8194696f3b95c83f24c1d92fe756485a0c18d37a77cf05fc67573b50cdb [2024-11-23 23:33:00,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:33:00,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:33:00,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:33:00,978 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:33:00,978 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:33:00,980 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d6c027-6bf7-4b57-85c5-3f2fbe934c2a/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.4.prop1-func-interl.c [2024-11-23 23:33:04,156 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d6c027-6bf7-4b57-85c5-3f2fbe934c2a/bin/uautomizer-verify-LYvppIcaGC/data/8e29dac8e/2e52eefc2c564cd78074a30a6193a5f1/FLAG429b09b96 [2024-11-23 23:33:04,765 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:33:04,766 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d6c027-6bf7-4b57-85c5-3f2fbe934c2a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.4.prop1-func-interl.c [2024-11-23 23:33:04,809 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d6c027-6bf7-4b57-85c5-3f2fbe934c2a/bin/uautomizer-verify-LYvppIcaGC/data/8e29dac8e/2e52eefc2c564cd78074a30a6193a5f1/FLAG429b09b96 [2024-11-23 23:33:04,840 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d6c027-6bf7-4b57-85c5-3f2fbe934c2a/bin/uautomizer-verify-LYvppIcaGC/data/8e29dac8e/2e52eefc2c564cd78074a30a6193a5f1 [2024-11-23 23:33:04,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:33:04,846 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:33:04,849 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:33:04,849 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:33:04,855 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:33:04,856 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:33:04" (1/1) ... [2024-11-23 23:33:04,857 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bacff59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:33:04, skipping insertion in model container [2024-11-23 23:33:04,857 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:33:04" (1/1) ... [2024-11-23 23:33:05,038 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:33:05,411 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_f4d6c027-6bf7-4b57-85c5-3f2fbe934c2a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.4.prop1-func-interl.c[1174,1187] [2024-11-23 23:33:06,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:33:06,728 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:33:06,754 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_f4d6c027-6bf7-4b57-85c5-3f2fbe934c2a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.4.prop1-func-interl.c[1174,1187] [2024-11-23 23:33:07,602 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:33:07,619 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:33:07,620 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:33:07 WrapperNode [2024-11-23 23:33:07,620 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:33:07,621 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:33:07,622 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:33:07,622 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:33:07,630 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:33:07" (1/1) ... [2024-11-23 23:33:07,907 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:33:07" (1/1) ... [2024-11-23 23:33:11,402 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27021 [2024-11-23 23:33:11,404 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:33:11,406 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:33:11,406 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:33:11,408 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:33:11,418 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:33:07" (1/1) ... [2024-11-23 23:33:11,418 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:33:07" (1/1) ... [2024-11-23 23:33:12,323 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:33:07" (1/1) ... [2024-11-23 23:33:12,811 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]. [2024-11-23 23:33:12,811 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:33:07" (1/1) ... [2024-11-23 23:33:12,811 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:33:07" (1/1) ... [2024-11-23 23:33:13,809 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:33:07" (1/1) ... [2024-11-23 23:33:13,873 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:33:07" (1/1) ... [2024-11-23 23:33:14,014 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:33:07" (1/1) ... [2024-11-23 23:33:14,121 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:33:07" (1/1) ... [2024-11-23 23:33:14,215 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:33:07" (1/1) ... [2024-11-23 23:33:14,688 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:33:14,689 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:33:14,689 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:33:14,689 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:33:14,690 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:33:07" (1/1) ... [2024-11-23 23:33:14,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:33:14,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d6c027-6bf7-4b57-85c5-3f2fbe934c2a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:33:14,735 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d6c027-6bf7-4b57-85c5-3f2fbe934c2a/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:33:14,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d6c027-6bf7-4b57-85c5-3f2fbe934c2a/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:33:14,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:33:14,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:33:14,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:33:14,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:33:16,571 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:33:16,574 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:34:48,925 INFO L? ?]: Removed 14598 outVars from TransFormulas that were not future-live. [2024-11-23 23:34:48,926 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:34:49,160 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:34:49,160 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-23 23:34:49,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:34:49 BoogieIcfgContainer [2024-11-23 23:34:49,161 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:34:49,164 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:34:49,164 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:34:49,170 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:34:49,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:33:04" (1/3) ... [2024-11-23 23:34:49,174 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@97553f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:34:49, skipping insertion in model container [2024-11-23 23:34:49,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:33:07" (2/3) ... [2024-11-23 23:34:49,174 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@97553f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:34:49, skipping insertion in model container [2024-11-23 23:34:49,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:34:49" (3/3) ... [2024-11-23 23:34:49,176 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.needham.4.prop1-func-interl.c [2024-11-23 23:34:49,198 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:34:49,202 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.needham.4.prop1-func-interl.c that has 1 procedures, 9846 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 23:34:49,472 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:34:49,488 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;@7b3c81a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:34:49,489 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:34:49,517 INFO L276 IsEmpty]: Start isEmpty. Operand has 9846 states, 9844 states have (on average 1.5035554652580252) internal successors, (14801), 9845 states have internal predecessors, (14801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:34:49,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2024-11-23 23:34:49,547 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:34:49,548 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:34:49,549 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:34:49,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:34:49,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1331777858, now seen corresponding path program 1 times [2024-11-23 23:34:49,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:34:49,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640251625] [2024-11-23 23:34:49,566 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:34:49,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:34:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:34:52,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:34:52,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:34:52,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640251625] [2024-11-23 23:34:52,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640251625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:34:52,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:34:52,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:34:52,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151918103] [2024-11-23 23:34:52,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:34:52,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:34:52,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:34:52,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:34:52,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:34:52,338 INFO L87 Difference]: Start difference. First operand has 9846 states, 9844 states have (on average 1.5035554652580252) internal successors, (14801), 9845 states have internal predecessors, (14801), 0 states have call successors, (0), 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 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:34:53,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:34:53,108 INFO L93 Difference]: Finished difference Result 19413 states and 29187 transitions. [2024-11-23 23:34:53,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:34:53,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 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 401 [2024-11-23 23:34:53,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:34:53,194 INFO L225 Difference]: With dead ends: 19413 [2024-11-23 23:34:53,194 INFO L226 Difference]: Without dead ends: 9845 [2024-11-23 23:34:53,222 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:34:53,226 INFO L435 NwaCegarLoop]: 14795 mSDtfsCounter, 0 mSDsluCounter, 29584 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44379 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:34:53,229 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44379 Invalid, 11 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:34:53,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9845 states. [2024-11-23 23:34:53,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9845 to 9845. [2024-11-23 23:34:53,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9845 states, 9844 states have (on average 1.5033522958147094) internal successors, (14799), 9844 states have internal predecessors, (14799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:34:53,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9845 states to 9845 states and 14799 transitions. [2024-11-23 23:34:53,660 INFO L78 Accepts]: Start accepts. Automaton has 9845 states and 14799 transitions. Word has length 401 [2024-11-23 23:34:53,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:34:53,664 INFO L471 AbstractCegarLoop]: Abstraction has 9845 states and 14799 transitions. [2024-11-23 23:34:53,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:34:53,666 INFO L276 IsEmpty]: Start isEmpty. Operand 9845 states and 14799 transitions. [2024-11-23 23:34:53,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2024-11-23 23:34:53,681 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:34:53,681 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:34:53,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:34:53,682 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:34:53,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:34:53,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1666257089, now seen corresponding path program 1 times [2024-11-23 23:34:53,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:34:53,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726878157] [2024-11-23 23:34:53,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:34:53,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:34:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:34:54,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:34:54,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:34:54,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726878157] [2024-11-23 23:34:54,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726878157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:34:54,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:34:54,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:34:54,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622520375] [2024-11-23 23:34:54,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:34:54,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:34:54,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:34:54,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:34:54,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:34:54,931 INFO L87 Difference]: Start difference. First operand 9845 states and 14799 transitions. Second operand has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:34:55,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:34:55,399 INFO L93 Difference]: Finished difference Result 19414 states and 29185 transitions. [2024-11-23 23:34:55,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:34:55,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 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 402 [2024-11-23 23:34:55,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:34:55,440 INFO L225 Difference]: With dead ends: 19414 [2024-11-23 23:34:55,440 INFO L226 Difference]: Without dead ends: 9847 [2024-11-23 23:34:55,451 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:34:55,452 INFO L435 NwaCegarLoop]: 14795 mSDtfsCounter, 0 mSDsluCounter, 29580 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44375 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:34:55,454 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44375 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:34:55,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9847 states. [2024-11-23 23:34:55,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9847 to 9847. [2024-11-23 23:34:55,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9847 states, 9846 states have (on average 1.5032500507820434) internal successors, (14801), 9846 states have internal predecessors, (14801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:34:55,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9847 states to 9847 states and 14801 transitions. [2024-11-23 23:34:55,735 INFO L78 Accepts]: Start accepts. Automaton has 9847 states and 14801 transitions. Word has length 402 [2024-11-23 23:34:55,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:34:55,738 INFO L471 AbstractCegarLoop]: Abstraction has 9847 states and 14801 transitions. [2024-11-23 23:34:55,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:34:55,738 INFO L276 IsEmpty]: Start isEmpty. Operand 9847 states and 14801 transitions. [2024-11-23 23:34:55,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2024-11-23 23:34:55,751 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:34:55,751 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:34:55,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:34:55,752 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:34:55,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:34:55,757 INFO L85 PathProgramCache]: Analyzing trace with hash -983601161, now seen corresponding path program 1 times [2024-11-23 23:34:55,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:34:55,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37444364] [2024-11-23 23:34:55,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:34:55,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:34:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:34:56,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:34:56,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:34:56,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37444364] [2024-11-23 23:34:56,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37444364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:34:56,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:34:56,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:34:56,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868563117] [2024-11-23 23:34:56,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:34:56,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:34:56,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:34:56,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:34:56,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:34:56,943 INFO L87 Difference]: Start difference. First operand 9847 states and 14801 transitions. Second operand has 5 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:34:57,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:34:57,483 INFO L93 Difference]: Finished difference Result 19422 states and 29195 transitions. [2024-11-23 23:34:57,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:34:57,484 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 0 states have call successors, (0), 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 403 [2024-11-23 23:34:57,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:34:57,537 INFO L225 Difference]: With dead ends: 19422 [2024-11-23 23:34:57,537 INFO L226 Difference]: Without dead ends: 9853 [2024-11-23 23:34:57,549 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:34:57,550 INFO L435 NwaCegarLoop]: 14794 mSDtfsCounter, 4 mSDsluCounter, 44370 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 59164 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:34:57,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 59164 Invalid, 23 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:34:57,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9853 states. [2024-11-23 23:34:57,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9853 to 9853. [2024-11-23 23:34:57,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9853 states, 9852 states have (on average 1.503146569224523) internal successors, (14809), 9852 states have internal predecessors, (14809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:34:57,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9853 states to 9853 states and 14809 transitions. [2024-11-23 23:34:57,817 INFO L78 Accepts]: Start accepts. Automaton has 9853 states and 14809 transitions. Word has length 403 [2024-11-23 23:34:57,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:34:57,819 INFO L471 AbstractCegarLoop]: Abstraction has 9853 states and 14809 transitions. [2024-11-23 23:34:57,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:34:57,819 INFO L276 IsEmpty]: Start isEmpty. Operand 9853 states and 14809 transitions. [2024-11-23 23:34:57,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2024-11-23 23:34:57,833 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:34:57,833 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:34:57,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:34:57,834 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:34:57,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:34:57,835 INFO L85 PathProgramCache]: Analyzing trace with hash 627194575, now seen corresponding path program 1 times [2024-11-23 23:34:57,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:34:57,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749107700] [2024-11-23 23:34:57,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:34:57,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:34:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:34:58,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:34:58,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:34:58,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749107700] [2024-11-23 23:34:58,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749107700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:34:58,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:34:58,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:34:58,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922537774] [2024-11-23 23:34:58,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:34:58,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:34:58,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:34:58,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:34:58,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:34:58,947 INFO L87 Difference]: Start difference. First operand 9853 states and 14809 transitions. Second operand has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:34:59,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:34:59,604 INFO L93 Difference]: Finished difference Result 27893 states and 41932 transitions. [2024-11-23 23:34:59,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:34:59,605 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 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 404 [2024-11-23 23:34:59,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:34:59,651 INFO L225 Difference]: With dead ends: 27893 [2024-11-23 23:34:59,651 INFO L226 Difference]: Without dead ends: 18318 [2024-11-23 23:34:59,665 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:34:59,666 INFO L435 NwaCegarLoop]: 14791 mSDtfsCounter, 12754 mSDsluCounter, 43952 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12754 SdHoareTripleChecker+Valid, 58743 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:34:59,667 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12754 Valid, 58743 Invalid, 30 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:34:59,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18318 states. [2024-11-23 23:34:59,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18318 to 10355. [2024-11-23 23:34:59,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10355 states, 10354 states have (on average 1.5028974309445624) internal successors, (15561), 10354 states have internal predecessors, (15561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:35:00,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10355 states to 10355 states and 15561 transitions. [2024-11-23 23:35:00,058 INFO L78 Accepts]: Start accepts. Automaton has 10355 states and 15561 transitions. Word has length 404 [2024-11-23 23:35:00,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:35:00,059 INFO L471 AbstractCegarLoop]: Abstraction has 10355 states and 15561 transitions. [2024-11-23 23:35:00,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:35:00,060 INFO L276 IsEmpty]: Start isEmpty. Operand 10355 states and 15561 transitions. [2024-11-23 23:35:01,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5048 [2024-11-23 23:35:01,146 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:35:01,149 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:35:01,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:35:01,150 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:35:01,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:35:01,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1276711811, now seen corresponding path program 1 times [2024-11-23 23:35:01,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:35:01,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305701324] [2024-11-23 23:35:01,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:35:01,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:35:15,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:35:30,990 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:35:30,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:35:30,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305701324] [2024-11-23 23:35:30,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305701324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:35:30,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:35:30,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:35:30,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441289018] [2024-11-23 23:35:30,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:35:30,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:35:30,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:35:31,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:35:31,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:35:31,007 INFO L87 Difference]: Start difference. First operand 10355 states and 15561 transitions. Second operand has 3 states, 3 states have (on average 1682.3333333333333) internal successors, (5047), 3 states have internal predecessors, (5047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:35:31,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:35:31,196 INFO L93 Difference]: Finished difference Result 19931 states and 29956 transitions. [2024-11-23 23:35:31,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:35:31,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1682.3333333333333) internal successors, (5047), 3 states have internal predecessors, (5047), 0 states have call successors, (0), 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 5047 [2024-11-23 23:35:31,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:35:31,227 INFO L225 Difference]: With dead ends: 19931 [2024-11-23 23:35:31,227 INFO L226 Difference]: Without dead ends: 10356 [2024-11-23 23:35:31,240 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 [2024-11-23 23:35:31,241 INFO L435 NwaCegarLoop]: 14796 mSDtfsCounter, 0 mSDsluCounter, 14790 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29586 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:35:31,243 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29586 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:35:31,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10356 states. [2024-11-23 23:35:31,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10356 to 10356. [2024-11-23 23:35:31,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10356 states, 10355 states have (on average 1.5028488652824723) internal successors, (15562), 10355 states have internal predecessors, (15562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:35:31,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10356 states to 10356 states and 15562 transitions. [2024-11-23 23:35:31,498 INFO L78 Accepts]: Start accepts. Automaton has 10356 states and 15562 transitions. Word has length 5047 [2024-11-23 23:35:31,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:35:31,501 INFO L471 AbstractCegarLoop]: Abstraction has 10356 states and 15562 transitions. [2024-11-23 23:35:31,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1682.3333333333333) internal successors, (5047), 3 states have internal predecessors, (5047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:35:31,504 INFO L276 IsEmpty]: Start isEmpty. Operand 10356 states and 15562 transitions. [2024-11-23 23:35:31,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5048 [2024-11-23 23:35:31,706 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:35:31,711 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:35:31,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:35:31,711 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:35:31,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:35:31,718 INFO L85 PathProgramCache]: Analyzing trace with hash -366696270, now seen corresponding path program 1 times [2024-11-23 23:35:31,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:35:31,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981042571] [2024-11-23 23:35:31,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:35:31,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:35:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat