./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-71.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_a27668b9-c76f-4700-9e60-48a4acd96920/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a27668b9-c76f-4700-9e60-48a4acd96920/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_a27668b9-c76f-4700-9e60-48a4acd96920/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a27668b9-c76f-4700-9e60-48a4acd96920/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-71.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a27668b9-c76f-4700-9e60-48a4acd96920/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a27668b9-c76f-4700-9e60-48a4acd96920/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 32bit --witnessprinter.graph.data.programhash 182636466dd7ed34c7e4a19dcd08446c47e3ac770c4a66384f8d4d043f90aba6 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:30:35,014 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:30:35,156 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a27668b9-c76f-4700-9e60-48a4acd96920/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 23:30:35,166 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:30:35,170 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:30:35,211 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:30:35,213 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:30:35,214 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:30:35,215 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:30:35,215 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:30:35,216 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:30:35,217 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:30:35,217 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:30:35,217 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:30:35,217 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:30:35,218 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:30:35,219 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:30:35,219 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:30:35,219 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:30:35,219 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:30:35,220 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:30:35,220 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:30:35,220 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:30:35,220 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:30:35,220 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:30:35,220 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:30:35,220 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:30:35,221 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:30:35,221 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:30:35,221 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:30:35,221 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:30:35,221 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:30:35,221 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:30:35,222 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:30:35,223 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:30:35,223 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:30:35,223 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:30:35,223 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:30:35,223 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:30:35,223 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:30:35,224 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:30:35,224 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:30:35,224 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:30:35,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:30:35,224 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:30:35,224 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:30:35,224 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:30:35,225 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:30:35,225 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_a27668b9-c76f-4700-9e60-48a4acd96920/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 182636466dd7ed34c7e4a19dcd08446c47e3ac770c4a66384f8d4d043f90aba6 [2024-11-23 23:30:35,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:30:35,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:30:35,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:30:35,682 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:30:35,683 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:30:35,685 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a27668b9-c76f-4700-9e60-48a4acd96920/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-71.i [2024-11-23 23:30:39,433 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a27668b9-c76f-4700-9e60-48a4acd96920/bin/uautomizer-verify-LYvppIcaGC/data/94a2b18aa/b08a8391713949fda4b5ca702f2e474a/FLAG1da443ad7 [2024-11-23 23:30:39,874 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:30:39,875 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a27668b9-c76f-4700-9e60-48a4acd96920/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-71.i [2024-11-23 23:30:39,891 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a27668b9-c76f-4700-9e60-48a4acd96920/bin/uautomizer-verify-LYvppIcaGC/data/94a2b18aa/b08a8391713949fda4b5ca702f2e474a/FLAG1da443ad7 [2024-11-23 23:30:40,016 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a27668b9-c76f-4700-9e60-48a4acd96920/bin/uautomizer-verify-LYvppIcaGC/data/94a2b18aa/b08a8391713949fda4b5ca702f2e474a [2024-11-23 23:30:40,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:30:40,022 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:30:40,023 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:30:40,024 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:30:40,030 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:30:40,031 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:30:40" (1/1) ... [2024-11-23 23:30:40,032 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58ef9761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:30:40, skipping insertion in model container [2024-11-23 23:30:40,033 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:30:40" (1/1) ... [2024-11-23 23:30:40,090 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:30:40,301 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_a27668b9-c76f-4700-9e60-48a4acd96920/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-71.i[916,929] [2024-11-23 23:30:40,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:30:40,632 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:30:40,646 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_a27668b9-c76f-4700-9e60-48a4acd96920/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-71.i[916,929] [2024-11-23 23:30:40,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:30:40,851 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:30:40,853 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:30:40 WrapperNode [2024-11-23 23:30:40,853 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:30:40,855 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:30:40,855 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:30:40,855 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:30:40,868 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:30:40" (1/1) ... [2024-11-23 23:30:40,902 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:30:40" (1/1) ... [2024-11-23 23:30:40,989 INFO L138 Inliner]: procedures = 26, calls = 102, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 563 [2024-11-23 23:30:40,990 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:30:40,990 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:30:40,991 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:30:40,991 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:30:41,003 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:30:40" (1/1) ... [2024-11-23 23:30:41,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:30:40" (1/1) ... [2024-11-23 23:30:41,011 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:30:40" (1/1) ... [2024-11-23 23:30:41,037 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 23:30:41,037 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:30:40" (1/1) ... [2024-11-23 23:30:41,037 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:30:40" (1/1) ... [2024-11-23 23:30:41,060 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:30:40" (1/1) ... [2024-11-23 23:30:41,064 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:30:40" (1/1) ... [2024-11-23 23:30:41,075 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:30:40" (1/1) ... [2024-11-23 23:30:41,091 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:30:40" (1/1) ... [2024-11-23 23:30:41,099 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:30:40" (1/1) ... [2024-11-23 23:30:41,114 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:30:41,117 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:30:41,117 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:30:41,117 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:30:41,119 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:30:40" (1/1) ... [2024-11-23 23:30:41,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:30:41,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a27668b9-c76f-4700-9e60-48a4acd96920/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:30:41,164 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a27668b9-c76f-4700-9e60-48a4acd96920/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:30:41,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a27668b9-c76f-4700-9e60-48a4acd96920/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:30:41,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:30:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 23:30:41,203 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 23:30:41,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:30:41,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:30:41,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:30:41,365 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:30:41,367 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:30:42,760 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-11-23 23:30:42,760 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:30:42,792 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:30:42,795 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 23:30:42,796 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:30:42 BoogieIcfgContainer [2024-11-23 23:30:42,796 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:30:42,799 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:30:42,803 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:30:42,809 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:30:42,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:30:40" (1/3) ... [2024-11-23 23:30:42,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6298b18c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:30:42, skipping insertion in model container [2024-11-23 23:30:42,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:30:40" (2/3) ... [2024-11-23 23:30:42,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6298b18c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:30:42, skipping insertion in model container [2024-11-23 23:30:42,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:30:42" (3/3) ... [2024-11-23 23:30:42,816 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-71.i [2024-11-23 23:30:42,838 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:30:42,842 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-71.i that has 2 procedures, 236 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 23:30:42,949 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:30:42,966 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;@17c34234, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:30:42,967 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:30:42,973 INFO L276 IsEmpty]: Start isEmpty. Operand has 236 states, 144 states have (on average 1.4861111111111112) internal successors, (214), 145 states have internal predecessors, (214), 89 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-23 23:30:43,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2024-11-23 23:30:43,022 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:30:43,023 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:30:43,024 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:30:43,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:30:43,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1714954210, now seen corresponding path program 1 times [2024-11-23 23:30:43,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:30:43,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312790870] [2024-11-23 23:30:43,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:30:43,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:30:43,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:30:43,987 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 15488 trivial. 0 not checked. [2024-11-23 23:30:43,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:30:43,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312790870] [2024-11-23 23:30:43,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312790870] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:30:43,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406798462] [2024-11-23 23:30:43,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:30:43,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:30:43,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a27668b9-c76f-4700-9e60-48a4acd96920/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:30:43,993 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a27668b9-c76f-4700-9e60-48a4acd96920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:30:43,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a27668b9-c76f-4700-9e60-48a4acd96920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:30:44,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:30:44,655 INFO L256 TraceCheckSpWp]: Trace formula consists of 1193 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 23:30:44,697 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:30:44,859 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 15488 trivial. 0 not checked. [2024-11-23 23:30:44,859 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:30:44,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406798462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:30:44,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:30:44,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 23:30:44,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146710342] [2024-11-23 23:30:44,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:30:44,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 23:30:44,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:30:44,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 23:30:44,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:30:44,914 INFO L87 Difference]: Start difference. First operand has 236 states, 144 states have (on average 1.4861111111111112) internal successors, (214), 145 states have internal predecessors, (214), 89 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 2 states, 2 states have (on average 52.5) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (89), 2 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 2 states have call successors, (89) [2024-11-23 23:30:45,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:30:45,037 INFO L93 Difference]: Finished difference Result 465 states and 867 transitions. [2024-11-23 23:30:45,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 23:30:45,042 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 52.5) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (89), 2 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 2 states have call successors, (89) Word has length 545 [2024-11-23 23:30:45,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:30:45,056 INFO L225 Difference]: With dead ends: 465 [2024-11-23 23:30:45,056 INFO L226 Difference]: Without dead ends: 232 [2024-11-23 23:30:45,070 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:30:45,077 INFO L435 NwaCegarLoop]: 385 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:30:45,078 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:30:45,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-23 23:30:45,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2024-11-23 23:30:45,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 141 states have (on average 1.4680851063829787) internal successors, (207), 141 states have internal predecessors, (207), 89 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-23 23:30:45,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 385 transitions. [2024-11-23 23:30:45,234 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 385 transitions. Word has length 545 [2024-11-23 23:30:45,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:30:45,238 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 385 transitions. [2024-11-23 23:30:45,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 52.5) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (89), 2 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 2 states have call successors, (89) [2024-11-23 23:30:45,239 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 385 transitions. [2024-11-23 23:30:45,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2024-11-23 23:30:45,260 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:30:45,261 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:30:45,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a27668b9-c76f-4700-9e60-48a4acd96920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 23:30:45,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a27668b9-c76f-4700-9e60-48a4acd96920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 23:30:45,463 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:30:45,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:30:45,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1996792872, now seen corresponding path program 1 times [2024-11-23 23:30:45,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:30:45,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110200572] [2024-11-23 23:30:45,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:30:45,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:30:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:30:46,755 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-23 23:30:46,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:30:46,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110200572] [2024-11-23 23:30:46,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110200572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:30:46,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:30:46,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:30:46,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719324584] [2024-11-23 23:30:46,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:30:46,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:30:46,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:30:46,762 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:30:46,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:30:46,764 INFO L87 Difference]: Start difference. First operand 232 states and 385 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-23 23:30:46,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:30:46,848 INFO L93 Difference]: Finished difference Result 462 states and 769 transitions. [2024-11-23 23:30:46,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:30:46,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 545 [2024-11-23 23:30:46,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:30:46,857 INFO L225 Difference]: With dead ends: 462 [2024-11-23 23:30:46,859 INFO L226 Difference]: Without dead ends: 233 [2024-11-23 23:30:46,861 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 23:30:46,862 INFO L435 NwaCegarLoop]: 384 mSDtfsCounter, 0 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 762 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 23:30:46,863 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 762 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:30:46,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-11-23 23:30:46,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2024-11-23 23:30:46,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 142 states have (on average 1.4647887323943662) internal successors, (208), 142 states have internal predecessors, (208), 89 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-23 23:30:46,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 386 transitions. [2024-11-23 23:30:46,914 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 386 transitions. Word has length 545 [2024-11-23 23:30:46,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:30:46,920 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 386 transitions. [2024-11-23 23:30:46,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-23 23:30:46,921 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 386 transitions. [2024-11-23 23:30:46,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2024-11-23 23:30:46,934 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:30:46,934 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:30:46,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:30:46,934 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:30:46,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:30:46,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1788701334, now seen corresponding path program 1 times [2024-11-23 23:30:46,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:30:46,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658177411] [2024-11-23 23:30:46,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:30:46,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:30:47,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:30:48,832 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 231 proven. 291 refuted. 0 times theorem prover too weak. 15142 trivial. 0 not checked. [2024-11-23 23:30:48,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:30:48,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658177411] [2024-11-23 23:30:48,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658177411] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:30:48,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78408358] [2024-11-23 23:30:48,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:30:48,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:30:48,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a27668b9-c76f-4700-9e60-48a4acd96920/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:30:48,835 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a27668b9-c76f-4700-9e60-48a4acd96920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:30:48,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a27668b9-c76f-4700-9e60-48a4acd96920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:30:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:30:49,307 INFO L256 TraceCheckSpWp]: Trace formula consists of 1195 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 23:30:49,325 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:30:51,866 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 6514 proven. 75 refuted. 0 times theorem prover too weak. 9075 trivial. 0 not checked. [2024-11-23 23:30:51,866 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:32:56,603 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 189 proven. 75 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-11-23 23:32:56,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78408358] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:32:56,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:32:56,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 8] total 18 [2024-11-23 23:32:56,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243901396] [2024-11-23 23:32:56,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:32:56,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-23 23:32:56,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:32:56,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-23 23:32:56,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-23 23:32:56,615 INFO L87 Difference]: Start difference. First operand 233 states and 386 transitions. Second operand has 18 states, 18 states have (on average 15.333333333333334) internal successors, (276), 18 states have internal predecessors, (276), 7 states have call successors, (267), 3 states have call predecessors, (267), 6 states have return successors, (267), 7 states have call predecessors, (267), 7 states have call successors, (267) [2024-11-23 23:33:10,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:33:10,791 INFO L93 Difference]: Finished difference Result 3167 states and 5112 transitions. [2024-11-23 23:33:10,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2024-11-23 23:33:10,794 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 15.333333333333334) internal successors, (276), 18 states have internal predecessors, (276), 7 states have call successors, (267), 3 states have call predecessors, (267), 6 states have return successors, (267), 7 states have call predecessors, (267), 7 states have call successors, (267) Word has length 545 [2024-11-23 23:33:10,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:33:10,821 INFO L225 Difference]: With dead ends: 3167 [2024-11-23 23:33:10,821 INFO L226 Difference]: Without dead ends: 2937 [2024-11-23 23:33:10,827 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1262 GetRequests, 1110 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10636 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=4189, Invalid=19373, Unknown=0, NotChecked=0, Total=23562 [2024-11-23 23:33:10,827 INFO L435 NwaCegarLoop]: 358 mSDtfsCounter, 5843 mSDsluCounter, 2654 mSDsCounter, 0 mSdLazyCounter, 3650 mSolverCounterSat, 5042 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5854 SdHoareTripleChecker+Valid, 3012 SdHoareTripleChecker+Invalid, 8692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5042 IncrementalHoareTripleChecker+Valid, 3650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:33:10,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5854 Valid, 3012 Invalid, 8692 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5042 Valid, 3650 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2024-11-23 23:33:10,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2024-11-23 23:33:11,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1431. [2024-11-23 23:33:11,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 889 states have (on average 1.4600674915635545) internal successors, (1298), 893 states have internal predecessors, (1298), 519 states have call successors, (519), 22 states have call predecessors, (519), 22 states have return successors, (519), 515 states have call predecessors, (519), 519 states have call successors, (519) [2024-11-23 23:33:11,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 2336 transitions. [2024-11-23 23:33:11,183 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 2336 transitions. Word has length 545 [2024-11-23 23:33:11,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:33:11,186 INFO L471 AbstractCegarLoop]: Abstraction has 1431 states and 2336 transitions. [2024-11-23 23:33:11,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 15.333333333333334) internal successors, (276), 18 states have internal predecessors, (276), 7 states have call successors, (267), 3 states have call predecessors, (267), 6 states have return successors, (267), 7 states have call predecessors, (267), 7 states have call successors, (267) [2024-11-23 23:33:11,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 2336 transitions. [2024-11-23 23:33:11,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2024-11-23 23:33:11,202 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:33:11,202 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:33:11,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a27668b9-c76f-4700-9e60-48a4acd96920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 23:33:11,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a27668b9-c76f-4700-9e60-48a4acd96920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-23 23:33:11,407 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:33:11,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:33:11,408 INFO L85 PathProgramCache]: Analyzing trace with hash 262366037, now seen corresponding path program 1 times [2024-11-23 23:33:11,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:33:11,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319148672] [2024-11-23 23:33:11,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:33:11,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:33:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:33:18,192 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 276 proven. 246 refuted. 0 times theorem prover too weak. 15142 trivial. 0 not checked. [2024-11-23 23:33:18,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:33:18,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319148672] [2024-11-23 23:33:18,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319148672] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:33:18,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687103654] [2024-11-23 23:33:18,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:33:18,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:33:18,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a27668b9-c76f-4700-9e60-48a4acd96920/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:33:18,196 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a27668b9-c76f-4700-9e60-48a4acd96920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:33:18,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a27668b9-c76f-4700-9e60-48a4acd96920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:33:18,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:33:18,607 INFO L256 TraceCheckSpWp]: Trace formula consists of 1196 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-23 23:33:18,623 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:33:24,429 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 10305 proven. 543 refuted. 0 times theorem prover too weak. 4816 trivial. 0 not checked. [2024-11-23 23:33:24,430 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:33:41,610 WARN L851 $PredicateComparison]: unable to prove that (or (let ((.cse5 (+ c_~var_1_45~0 1)) (.cse2 (mod c_~var_1_36~0 256)) (.cse4 (mod (* 255 c_~var_1_36~0) 256))) (let ((.cse6 (< 0 (+ c_~var_1_36~0 1))) (.cse7 (< 127 .cse4)) (.cse0 (< 127 .cse2)) (.cse1 (< .cse2 .cse5))) (and (or (< c_~var_1_37~0 0) (let ((.cse3 (+ c_~var_1_45~0 256))) (and (or .cse0 (< c_~var_1_36~0 0) .cse1) (<= .cse2 .cse3) (<= .cse4 .cse3) (or (< .cse4 .cse5) .cse6 .cse7)))) (or (and (or .cse6 .cse7 (< .cse4 1)) (or (< .cse2 1) .cse0) (not (= c_~var_1_36~0 0))) (not (= c_~var_1_45~0 0))) (or .cse0 .cse1 (not (= c_~var_1_37~0 0)))))) (and (not (= (+ c_~var_1_37~0 10) 0)) (let ((.cse8 (* c_~var_1_36~0 65535))) (or (< 32767 (mod (+ .cse8 65534) 65536)) (< (mod .cse8 65536) 1))) (<= c_~var_1_36~0 32766))) is different from false [2024-11-23 23:33:58,036 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 600 proven. 438 refuted. 0 times theorem prover too weak. 14626 trivial. 0 not checked. [2024-11-23 23:33:58,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687103654] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:33:58,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:33:58,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20, 26] total 55 [2024-11-23 23:33:58,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589082819] [2024-11-23 23:33:58,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:33:58,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-23 23:33:58,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:33:58,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-23 23:33:58,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=491, Invalid=2374, Unknown=1, NotChecked=104, Total=2970 [2024-11-23 23:33:58,043 INFO L87 Difference]: Start difference. First operand 1431 states and 2336 transitions. Second operand has 55 states, 52 states have (on average 5.423076923076923) internal successors, (282), 51 states have internal predecessors, (282), 14 states have call successors, (267), 7 states have call predecessors, (267), 15 states have return successors, (267), 13 states have call predecessors, (267), 14 states have call successors, (267) [2024-11-23 23:39:59,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:39:59,402 INFO L93 Difference]: Finished difference Result 41834 states and 66691 transitions. [2024-11-23 23:39:59,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 395 states. [2024-11-23 23:39:59,403 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 52 states have (on average 5.423076923076923) internal successors, (282), 51 states have internal predecessors, (282), 14 states have call successors, (267), 7 states have call predecessors, (267), 15 states have return successors, (267), 13 states have call predecessors, (267), 14 states have call successors, (267) Word has length 546 [2024-11-23 23:39:59,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:39:59,815 INFO L225 Difference]: With dead ends: 41834 [2024-11-23 23:39:59,815 INFO L226 Difference]: Without dead ends: 40406 [2024-11-23 23:39:59,900 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1562 GetRequests, 1134 SyntacticMatches, 2 SemanticMatches, 426 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 83996 ImplicationChecksByTransitivity, 222.1s TimeCoverageRelationStatistics Valid=29423, Invalid=152482, Unknown=1, NotChecked=850, Total=182756 [2024-11-23 23:39:59,904 INFO L435 NwaCegarLoop]: 1594 mSDtfsCounter, 11888 mSDsluCounter, 23853 mSDsCounter, 0 mSdLazyCounter, 31380 mSolverCounterSat, 7796 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 118.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12007 SdHoareTripleChecker+Valid, 25447 SdHoareTripleChecker+Invalid, 54288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 7796 IncrementalHoareTripleChecker+Valid, 31380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15112 IncrementalHoareTripleChecker+Unchecked, 126.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:39:59,905 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12007 Valid, 25447 Invalid, 54288 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [7796 Valid, 31380 Invalid, 0 Unknown, 15112 Unchecked, 126.9s Time] [2024-11-23 23:39:59,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40406 states. [2024-11-23 23:40:05,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40406 to 6730. [2024-11-23 23:40:05,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6730 states, 4308 states have (on average 1.467966573816156) internal successors, (6324), 4351 states have internal predecessors, (6324), 2322 states have call successors, (2322), 99 states have call predecessors, (2322), 99 states have return successors, (2322), 2279 states have call predecessors, (2322), 2322 states have call successors, (2322) [2024-11-23 23:40:05,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6730 states to 6730 states and 10968 transitions. [2024-11-23 23:40:05,216 INFO L78 Accepts]: Start accepts. Automaton has 6730 states and 10968 transitions. Word has length 546 [2024-11-23 23:40:05,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:40:05,218 INFO L471 AbstractCegarLoop]: Abstraction has 6730 states and 10968 transitions. [2024-11-23 23:40:05,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 52 states have (on average 5.423076923076923) internal successors, (282), 51 states have internal predecessors, (282), 14 states have call successors, (267), 7 states have call predecessors, (267), 15 states have return successors, (267), 13 states have call predecessors, (267), 14 states have call successors, (267) [2024-11-23 23:40:05,219 INFO L276 IsEmpty]: Start isEmpty. Operand 6730 states and 10968 transitions. [2024-11-23 23:40:05,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2024-11-23 23:40:05,228 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:40:05,229 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:40:05,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a27668b9-c76f-4700-9e60-48a4acd96920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 23:40:05,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a27668b9-c76f-4700-9e60-48a4acd96920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:40:05,434 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:40:05,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:40:05,434 INFO L85 PathProgramCache]: Analyzing trace with hash -132000749, now seen corresponding path program 1 times [2024-11-23 23:40:05,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:40:05,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352580321] [2024-11-23 23:40:05,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:40:05,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:40:05,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:40:06,371 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-23 23:40:06,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:40:06,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352580321] [2024-11-23 23:40:06,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352580321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:40:06,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:40:06,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:40:06,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207360465] [2024-11-23 23:40:06,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:40:06,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:40:06,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:40:06,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:40:06,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:40:06,378 INFO L87 Difference]: Start difference. First operand 6730 states and 10968 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-23 23:40:09,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:40:09,769 INFO L93 Difference]: Finished difference Result 14508 states and 23652 transitions. [2024-11-23 23:40:09,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:40:09,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 546 [2024-11-23 23:40:09,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:40:09,816 INFO L225 Difference]: With dead ends: 14508 [2024-11-23 23:40:09,816 INFO L226 Difference]: Without dead ends: 7781 [2024-11-23 23:40:09,841 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 23:40:09,842 INFO L435 NwaCegarLoop]: 473 mSDtfsCounter, 215 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:40:09,842 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 832 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:40:09,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7781 states. [2024-11-23 23:40:12,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7781 to 7680. [2024-11-23 23:40:12,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7680 states, 4948 states have (on average 1.4706952303961196) internal successors, (7277), 4994 states have internal predecessors, (7277), 2609 states have call successors, (2609), 122 states have call predecessors, (2609), 122 states have return successors, (2609), 2563 states have call predecessors, (2609), 2609 states have call successors, (2609) [2024-11-23 23:40:12,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7680 states to 7680 states and 12495 transitions. [2024-11-23 23:40:12,764 INFO L78 Accepts]: Start accepts. Automaton has 7680 states and 12495 transitions. Word has length 546 [2024-11-23 23:40:12,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:40:12,766 INFO L471 AbstractCegarLoop]: Abstraction has 7680 states and 12495 transitions. [2024-11-23 23:40:12,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-23 23:40:12,766 INFO L276 IsEmpty]: Start isEmpty. Operand 7680 states and 12495 transitions. [2024-11-23 23:40:12,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2024-11-23 23:40:12,775 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:40:12,776 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:40:12,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:40:12,776 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:40:12,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:40:12,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1521835733, now seen corresponding path program 1 times [2024-11-23 23:40:12,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:40:12,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522213671] [2024-11-23 23:40:12,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:40:12,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:40:12,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:40:18,707 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-23 23:40:18,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:40:18,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522213671] [2024-11-23 23:40:18,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522213671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:40:18,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:40:18,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 23:40:18,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594661668] [2024-11-23 23:40:18,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:40:18,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 23:40:18,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:40:18,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 23:40:18,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:40:18,711 INFO L87 Difference]: Start difference. First operand 7680 states and 12495 transitions. Second operand has 13 states, 13 states have (on average 8.076923076923077) internal successors, (105), 13 states have internal predecessors, (105), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-23 23:40:38,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:40:38,578 INFO L93 Difference]: Finished difference Result 20449 states and 33210 transitions. [2024-11-23 23:40:38,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-23 23:40:38,579 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.076923076923077) internal successors, (105), 13 states have internal predecessors, (105), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 547 [2024-11-23 23:40:38,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:40:38,664 INFO L225 Difference]: With dead ends: 20449 [2024-11-23 23:40:38,664 INFO L226 Difference]: Without dead ends: 14179 [2024-11-23 23:40:38,693 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=178, Invalid=422, Unknown=0, NotChecked=0, Total=600 [2024-11-23 23:40:38,694 INFO L435 NwaCegarLoop]: 438 mSDtfsCounter, 2267 mSDsluCounter, 3114 mSDsCounter, 0 mSdLazyCounter, 2549 mSolverCounterSat, 1264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2267 SdHoareTripleChecker+Valid, 3552 SdHoareTripleChecker+Invalid, 3813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1264 IncrementalHoareTripleChecker+Valid, 2549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:40:38,694 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2267 Valid, 3552 Invalid, 3813 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1264 Valid, 2549 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2024-11-23 23:40:38,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14179 states. [2024-11-23 23:40:43,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14179 to 11334. [2024-11-23 23:40:43,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11334 states, 7702 states have (on average 1.5124642949883147) internal successors, (11649), 7778 states have internal predecessors, (11649), 3469 states have call successors, (3469), 162 states have call predecessors, (3469), 162 states have return successors, (3469), 3393 states have call predecessors, (3469), 3469 states have call successors, (3469) [2024-11-23 23:40:43,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11334 states to 11334 states and 18587 transitions. [2024-11-23 23:40:43,617 INFO L78 Accepts]: Start accepts. Automaton has 11334 states and 18587 transitions. Word has length 547 [2024-11-23 23:40:43,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:40:43,619 INFO L471 AbstractCegarLoop]: Abstraction has 11334 states and 18587 transitions. [2024-11-23 23:40:43,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.076923076923077) internal successors, (105), 13 states have internal predecessors, (105), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-23 23:40:43,620 INFO L276 IsEmpty]: Start isEmpty. Operand 11334 states and 18587 transitions. [2024-11-23 23:40:43,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2024-11-23 23:40:43,630 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:40:43,631 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:40:43,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 23:40:43,631 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:40:43,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:40:43,632 INFO L85 PathProgramCache]: Analyzing trace with hash 826639531, now seen corresponding path program 1 times [2024-11-23 23:40:43,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:40:43,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553233133] [2024-11-23 23:40:43,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:40:43,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:40:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:40:44,027 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-23 23:40:44,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:40:44,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553233133] [2024-11-23 23:40:44,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553233133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:40:44,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:40:44,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:40:44,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57649221] [2024-11-23 23:40:44,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:40:44,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:40:44,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:40:44,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:40:44,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:40:44,033 INFO L87 Difference]: Start difference. First operand 11334 states and 18587 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-23 23:40:54,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:40:54,218 INFO L93 Difference]: Finished difference Result 30635 states and 49916 transitions. [2024-11-23 23:40:54,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:40:54,219 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 547 [2024-11-23 23:40:54,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:40:54,330 INFO L225 Difference]: With dead ends: 30635 [2024-11-23 23:40:54,330 INFO L226 Difference]: Without dead ends: 21966 [2024-11-23 23:40:54,366 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:40:54,368 INFO L435 NwaCegarLoop]: 731 mSDtfsCounter, 589 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:40:54,369 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [589 Valid, 1709 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-23 23:40:54,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21966 states. [2024-11-23 23:41:01,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21966 to 16524. [2024-11-23 23:41:01,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16524 states, 11121 states have (on average 1.501573599496448) internal successors, (16699), 11229 states have internal predecessors, (16699), 5141 states have call successors, (5141), 261 states have call predecessors, (5141), 261 states have return successors, (5141), 5033 states have call predecessors, (5141), 5141 states have call successors, (5141) [2024-11-23 23:41:01,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16524 states to 16524 states and 26981 transitions. [2024-11-23 23:41:01,548 INFO L78 Accepts]: Start accepts. Automaton has 16524 states and 26981 transitions. Word has length 547 [2024-11-23 23:41:01,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:41:01,549 INFO L471 AbstractCegarLoop]: Abstraction has 16524 states and 26981 transitions. [2024-11-23 23:41:01,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-23 23:41:01,551 INFO L276 IsEmpty]: Start isEmpty. Operand 16524 states and 26981 transitions. [2024-11-23 23:41:01,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2024-11-23 23:41:01,564 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:41:01,564 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:41:01,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:41:01,565 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:41:01,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:41:01,567 INFO L85 PathProgramCache]: Analyzing trace with hash -256903733, now seen corresponding path program 1 times [2024-11-23 23:41:01,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:41:01,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568478687] [2024-11-23 23:41:01,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:01,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:41:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:41:06,112 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 189 proven. 75 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-11-23 23:41:06,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:41:06,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568478687] [2024-11-23 23:41:06,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568478687] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:41:06,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858647375] [2024-11-23 23:41:06,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:06,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:41:06,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a27668b9-c76f-4700-9e60-48a4acd96920/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:41:06,118 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a27668b9-c76f-4700-9e60-48a4acd96920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:41:06,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a27668b9-c76f-4700-9e60-48a4acd96920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:41:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:41:06,618 INFO L256 TraceCheckSpWp]: Trace formula consists of 1194 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-23 23:41:06,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:41:19,853 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 11316 proven. 360 refuted. 0 times theorem prover too weak. 3988 trivial. 0 not checked. [2024-11-23 23:41:19,854 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:41:38,631 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 477 proven. 306 refuted. 0 times theorem prover too weak. 14881 trivial. 0 not checked. [2024-11-23 23:41:38,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858647375] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:41:38,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:41:38,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 25, 22] total 57 [2024-11-23 23:41:38,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299079519] [2024-11-23 23:41:38,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:41:38,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-23 23:41:38,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:41:38,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-23 23:41:38,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=577, Invalid=2615, Unknown=0, NotChecked=0, Total=3192 [2024-11-23 23:41:38,638 INFO L87 Difference]: Start difference. First operand 16524 states and 26981 transitions. Second operand has 57 states, 56 states have (on average 5.678571428571429) internal successors, (318), 55 states have internal predecessors, (318), 18 states have call successors, (267), 8 states have call predecessors, (267), 16 states have return successors, (267), 18 states have call predecessors, (267), 18 states have call successors, (267) [2024-11-23 23:43:58,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:43:58,574 INFO L93 Difference]: Finished difference Result 59516 states and 96511 transitions. [2024-11-23 23:43:58,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2024-11-23 23:43:58,575 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 5.678571428571429) internal successors, (318), 55 states have internal predecessors, (318), 18 states have call successors, (267), 8 states have call predecessors, (267), 16 states have return successors, (267), 18 states have call predecessors, (267), 18 states have call successors, (267) Word has length 547 [2024-11-23 23:43:58,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:43:58,811 INFO L225 Difference]: With dead ends: 59516 [2024-11-23 23:43:58,811 INFO L226 Difference]: Without dead ends: 43059 [2024-11-23 23:43:58,879 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1351 GetRequests, 1095 SyntacticMatches, 0 SemanticMatches, 256 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26121 ImplicationChecksByTransitivity, 48.1s TimeCoverageRelationStatistics Valid=13150, Invalid=53156, Unknown=0, NotChecked=0, Total=66306 [2024-11-23 23:43:58,880 INFO L435 NwaCegarLoop]: 621 mSDtfsCounter, 13489 mSDsluCounter, 12827 mSDsCounter, 0 mSdLazyCounter, 18503 mSolverCounterSat, 8981 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 68.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13630 SdHoareTripleChecker+Valid, 13448 SdHoareTripleChecker+Invalid, 27484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 8981 IncrementalHoareTripleChecker+Valid, 18503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 74.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:43:58,881 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13630 Valid, 13448 Invalid, 27484 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [8981 Valid, 18503 Invalid, 0 Unknown, 0 Unchecked, 74.2s Time] [2024-11-23 23:43:58,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43059 states. [2024-11-23 23:44:06,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43059 to 15347. [2024-11-23 23:44:06,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15347 states, 10767 states have (on average 1.5352465867929785) internal successors, (16530), 10853 states have internal predecessors, (16530), 4330 states have call successors, (4330), 249 states have call predecessors, (4330), 249 states have return successors, (4330), 4244 states have call predecessors, (4330), 4330 states have call successors, (4330) [2024-11-23 23:44:06,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15347 states to 15347 states and 25190 transitions. [2024-11-23 23:44:06,532 INFO L78 Accepts]: Start accepts. Automaton has 15347 states and 25190 transitions. Word has length 547 [2024-11-23 23:44:06,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:06,533 INFO L471 AbstractCegarLoop]: Abstraction has 15347 states and 25190 transitions. [2024-11-23 23:44:06,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 5.678571428571429) internal successors, (318), 55 states have internal predecessors, (318), 18 states have call successors, (267), 8 states have call predecessors, (267), 16 states have return successors, (267), 18 states have call predecessors, (267), 18 states have call successors, (267) [2024-11-23 23:44:06,534 INFO L276 IsEmpty]: Start isEmpty. Operand 15347 states and 25190 transitions. [2024-11-23 23:44:06,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2024-11-23 23:44:06,544 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:06,545 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:06,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a27668b9-c76f-4700-9e60-48a4acd96920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 23:44:06,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a27668b9-c76f-4700-9e60-48a4acd96920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-23 23:44:06,750 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:06,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:06,751 INFO L85 PathProgramCache]: Analyzing trace with hash -2055575270, now seen corresponding path program 1 times [2024-11-23 23:44:06,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:06,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516720443] [2024-11-23 23:44:06,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:06,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:07,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:12,816 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-23 23:44:12,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:12,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516720443] [2024-11-23 23:44:12,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516720443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:12,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:12,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 23:44:12,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073238799] [2024-11-23 23:44:12,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:12,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 23:44:12,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:12,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 23:44:12,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:44:12,819 INFO L87 Difference]: Start difference. First operand 15347 states and 25190 transitions. Second operand has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 12 states have internal predecessors, (106), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89)