./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-98.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_75c0340c-9d06-469d-af36-fdedddb7c903/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c0340c-9d06-469d-af36-fdedddb7c903/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_75c0340c-9d06-469d-af36-fdedddb7c903/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c0340c-9d06-469d-af36-fdedddb7c903/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-98.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c0340c-9d06-469d-af36-fdedddb7c903/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_75c0340c-9d06-469d-af36-fdedddb7c903/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 d547daa42312808cc28862dd4b94a0086c06ba412007b6d7dd9deffeebecb3b2 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:38:03,140 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:38:03,237 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c0340c-9d06-469d-af36-fdedddb7c903/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 01:38:03,246 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:38:03,247 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:38:03,282 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:38:03,282 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:38:03,283 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:38:03,284 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:38:03,285 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:38:03,285 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:38:03,286 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:38:03,286 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:38:03,287 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:38:03,287 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:38:03,287 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:38:03,287 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:38:03,287 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:38:03,287 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:38:03,287 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:38:03,288 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:38:03,288 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:38:03,288 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:38:03,288 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:38:03,288 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:38:03,289 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:38:03,289 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:38:03,289 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:38:03,289 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:38:03,289 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:38:03,289 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:38:03,289 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:38:03,289 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:38:03,290 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:38:03,290 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:38:03,291 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:38:03,291 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:38:03,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:38:03,291 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:38:03,291 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:38:03,291 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:38:03,291 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:38:03,292 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:38:03,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:38:03,292 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:38:03,292 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:38:03,292 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:38:03,293 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:38:03,293 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_75c0340c-9d06-469d-af36-fdedddb7c903/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 -> d547daa42312808cc28862dd4b94a0086c06ba412007b6d7dd9deffeebecb3b2 [2024-11-24 01:38:03,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:38:03,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:38:03,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:38:03,616 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:38:03,617 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:38:03,618 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c0340c-9d06-469d-af36-fdedddb7c903/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-98.i [2024-11-24 01:38:06,629 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c0340c-9d06-469d-af36-fdedddb7c903/bin/uautomizer-verify-LYvppIcaGC/data/7475c66cd/399c0139707143d58ae99e23ccbecc24/FLAGfdc3fc30a [2024-11-24 01:38:06,957 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:38:06,958 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c0340c-9d06-469d-af36-fdedddb7c903/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-98.i [2024-11-24 01:38:06,965 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c0340c-9d06-469d-af36-fdedddb7c903/bin/uautomizer-verify-LYvppIcaGC/data/7475c66cd/399c0139707143d58ae99e23ccbecc24/FLAGfdc3fc30a [2024-11-24 01:38:06,980 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c0340c-9d06-469d-af36-fdedddb7c903/bin/uautomizer-verify-LYvppIcaGC/data/7475c66cd/399c0139707143d58ae99e23ccbecc24 [2024-11-24 01:38:06,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:38:06,984 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:38:06,985 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:38:06,985 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:38:06,990 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:38:06,991 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:38:06" (1/1) ... [2024-11-24 01:38:06,992 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64a5ee67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:06, skipping insertion in model container [2024-11-24 01:38:06,993 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:38:06" (1/1) ... [2024-11-24 01:38:07,018 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:38:07,207 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_75c0340c-9d06-469d-af36-fdedddb7c903/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-98.i[915,928] [2024-11-24 01:38:07,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:38:07,289 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:38:07,300 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_75c0340c-9d06-469d-af36-fdedddb7c903/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-98.i[915,928] [2024-11-24 01:38:07,341 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:38:07,370 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:38:07,370 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:07 WrapperNode [2024-11-24 01:38:07,370 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:38:07,372 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:38:07,372 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:38:07,372 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:38:07,380 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:07" (1/1) ... [2024-11-24 01:38:07,391 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:07" (1/1) ... [2024-11-24 01:38:07,441 INFO L138 Inliner]: procedures = 26, calls = 37, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 170 [2024-11-24 01:38:07,441 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:38:07,442 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:38:07,442 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:38:07,442 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:38:07,454 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:07" (1/1) ... [2024-11-24 01:38:07,454 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:07" (1/1) ... [2024-11-24 01:38:07,457 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:07" (1/1) ... [2024-11-24 01:38:07,485 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]. [2024-11-24 01:38:07,485 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:07" (1/1) ... [2024-11-24 01:38:07,485 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:07" (1/1) ... [2024-11-24 01:38:07,497 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:07" (1/1) ... [2024-11-24 01:38:07,502 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:07" (1/1) ... [2024-11-24 01:38:07,509 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:07" (1/1) ... [2024-11-24 01:38:07,511 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:07" (1/1) ... [2024-11-24 01:38:07,520 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:07" (1/1) ... [2024-11-24 01:38:07,528 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:38:07,529 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:38:07,529 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:38:07,529 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:38:07,530 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:07" (1/1) ... [2024-11-24 01:38:07,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:38:07,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c0340c-9d06-469d-af36-fdedddb7c903/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:38:07,576 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c0340c-9d06-469d-af36-fdedddb7c903/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:38:07,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c0340c-9d06-469d-af36-fdedddb7c903/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:38:07,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:38:07,609 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 01:38:07,609 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 01:38:07,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:38:07,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:38:07,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:38:07,721 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:38:07,723 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:38:08,319 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-11-24 01:38:08,319 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:38:08,336 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:38:08,339 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-24 01:38:08,339 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:38:08 BoogieIcfgContainer [2024-11-24 01:38:08,340 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:38:08,343 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:38:08,343 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:38:08,349 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:38:08,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:38:06" (1/3) ... [2024-11-24 01:38:08,350 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7b7264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:38:08, skipping insertion in model container [2024-11-24 01:38:08,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:07" (2/3) ... [2024-11-24 01:38:08,351 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7b7264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:38:08, skipping insertion in model container [2024-11-24 01:38:08,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:38:08" (3/3) ... [2024-11-24 01:38:08,352 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-1loop_file-98.i [2024-11-24 01:38:08,366 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:38:08,368 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_50-1loop_file-98.i that has 2 procedures, 75 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 01:38:08,461 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:38:08,479 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;@2bafb483, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:38:08,480 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:38:08,484 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 48 states have (on average 1.375) internal successors, (66), 49 states have internal predecessors, (66), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-24 01:38:08,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-24 01:38:08,501 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:38:08,502 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:38:08,502 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:38:08,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:38:08,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1091545887, now seen corresponding path program 1 times [2024-11-24 01:38:08,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:38:08,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338887800] [2024-11-24 01:38:08,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:38:08,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:38:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:38:10,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-24 01:38:10,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:38:10,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338887800] [2024-11-24 01:38:10,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338887800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:38:10,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:38:10,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:38:10,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620931535] [2024-11-24 01:38:10,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:38:10,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:38:10,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:38:10,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:38:10,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:38:10,506 INFO L87 Difference]: Start difference. First operand has 75 states, 48 states have (on average 1.375) internal successors, (66), 49 states have internal predecessors, (66), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-24 01:38:10,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:38:10,686 INFO L93 Difference]: Finished difference Result 196 states and 348 transitions. [2024-11-24 01:38:10,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:38:10,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 154 [2024-11-24 01:38:10,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:38:10,705 INFO L225 Difference]: With dead ends: 196 [2024-11-24 01:38:10,705 INFO L226 Difference]: Without dead ends: 116 [2024-11-24 01:38:10,711 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 [2024-11-24 01:38:10,716 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 103 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:38:10,720 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 237 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:38:10,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-24 01:38:10,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 71. [2024-11-24 01:38:10,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 45 states have (on average 1.288888888888889) internal successors, (58), 45 states have internal predecessors, (58), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-24 01:38:10,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 106 transitions. [2024-11-24 01:38:10,788 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 106 transitions. Word has length 154 [2024-11-24 01:38:10,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:38:10,795 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 106 transitions. [2024-11-24 01:38:10,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-24 01:38:10,795 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 106 transitions. [2024-11-24 01:38:10,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-24 01:38:10,801 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:38:10,801 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:38:10,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 01:38:10,805 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:38:10,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:38:10,806 INFO L85 PathProgramCache]: Analyzing trace with hash -833380449, now seen corresponding path program 1 times [2024-11-24 01:38:10,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:38:10,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332768724] [2024-11-24 01:38:10,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:38:10,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:38:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:38:19,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-24 01:38:19,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:38:19,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332768724] [2024-11-24 01:38:19,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332768724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:38:19,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:38:19,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:38:19,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6172797] [2024-11-24 01:38:19,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:38:19,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:38:19,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:38:19,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:38:19,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:38:19,732 INFO L87 Difference]: Start difference. First operand 71 states and 106 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-24 01:38:20,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:38:20,796 INFO L93 Difference]: Finished difference Result 298 states and 447 transitions. [2024-11-24 01:38:20,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:38:20,797 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 154 [2024-11-24 01:38:20,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:38:20,801 INFO L225 Difference]: With dead ends: 298 [2024-11-24 01:38:20,801 INFO L226 Difference]: Without dead ends: 230 [2024-11-24 01:38:20,802 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:38:20,802 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 350 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:38:20,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 286 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-24 01:38:20,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-11-24 01:38:20,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 178. [2024-11-24 01:38:20,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 108 states have (on average 1.2592592592592593) internal successors, (136), 109 states have internal predecessors, (136), 66 states have call successors, (66), 3 states have call predecessors, (66), 3 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-24 01:38:20,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 268 transitions. [2024-11-24 01:38:20,899 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 268 transitions. Word has length 154 [2024-11-24 01:38:20,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:38:20,900 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 268 transitions. [2024-11-24 01:38:20,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-24 01:38:20,900 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 268 transitions. [2024-11-24 01:38:20,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-24 01:38:20,903 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:38:20,903 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:38:20,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:38:20,903 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:38:20,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:38:20,904 INFO L85 PathProgramCache]: Analyzing trace with hash 941626913, now seen corresponding path program 1 times [2024-11-24 01:38:20,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:38:20,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369986182] [2024-11-24 01:38:20,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:38:20,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:38:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:38:50,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-24 01:38:50,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:38:50,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369986182] [2024-11-24 01:38:50,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369986182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:38:50,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:38:50,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-24 01:38:50,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455365470] [2024-11-24 01:38:50,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:38:50,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:38:50,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:38:50,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:38:50,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:38:50,752 INFO L87 Difference]: Start difference. First operand 178 states and 268 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-24 01:38:52,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:38:52,623 INFO L93 Difference]: Finished difference Result 212 states and 310 transitions. [2024-11-24 01:38:52,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:38:52,624 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 154 [2024-11-24 01:38:52,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:38:52,629 INFO L225 Difference]: With dead ends: 212 [2024-11-24 01:38:52,632 INFO L226 Difference]: Without dead ends: 210 [2024-11-24 01:38:52,633 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:38:52,634 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 73 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:38:52,636 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 433 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-24 01:38:52,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-24 01:38:52,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 191. [2024-11-24 01:38:52,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 121 states have (on average 1.2727272727272727) internal successors, (154), 122 states have internal predecessors, (154), 66 states have call successors, (66), 3 states have call predecessors, (66), 3 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-24 01:38:52,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 286 transitions. [2024-11-24 01:38:52,689 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 286 transitions. Word has length 154 [2024-11-24 01:38:52,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:38:52,689 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 286 transitions. [2024-11-24 01:38:52,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-24 01:38:52,690 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 286 transitions. [2024-11-24 01:38:52,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-24 01:38:52,694 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:38:52,694 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:38:52,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:38:52,695 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:38:52,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:38:52,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1513438819, now seen corresponding path program 1 times [2024-11-24 01:38:52,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:38:52,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746492810] [2024-11-24 01:38:52,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:38:52,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:38:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:38:53,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-24 01:38:53,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:38:53,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746492810] [2024-11-24 01:38:53,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746492810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:38:53,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:38:53,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:38:53,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437149258] [2024-11-24 01:38:53,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:38:53,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:38:53,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:38:53,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:38:53,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:38:53,633 INFO L87 Difference]: Start difference. First operand 191 states and 286 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-24 01:38:54,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:38:54,267 INFO L93 Difference]: Finished difference Result 438 states and 652 transitions. [2024-11-24 01:38:54,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:38:54,268 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 154 [2024-11-24 01:38:54,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:38:54,271 INFO L225 Difference]: With dead ends: 438 [2024-11-24 01:38:54,271 INFO L226 Difference]: Without dead ends: 250 [2024-11-24 01:38:54,273 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:38:54,274 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 259 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:38:54,274 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 485 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 01:38:54,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-11-24 01:38:54,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 198. [2024-11-24 01:38:54,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 125 states have (on average 1.256) internal successors, (157), 126 states have internal predecessors, (157), 68 states have call successors, (68), 4 states have call predecessors, (68), 4 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-24 01:38:54,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 293 transitions. [2024-11-24 01:38:54,334 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 293 transitions. Word has length 154 [2024-11-24 01:38:54,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:38:54,335 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 293 transitions. [2024-11-24 01:38:54,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-24 01:38:54,337 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 293 transitions. [2024-11-24 01:38:54,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-24 01:38:54,339 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:38:54,339 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:38:54,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 01:38:54,343 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:38:54,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:38:54,344 INFO L85 PathProgramCache]: Analyzing trace with hash 261568543, now seen corresponding path program 1 times [2024-11-24 01:38:54,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:38:54,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331432890] [2024-11-24 01:38:54,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:38:54,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:38:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat