./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-58.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1689718-5414-4fd9-9f49-886441aad1f5/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1689718-5414-4fd9-9f49-886441aad1f5/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1689718-5414-4fd9-9f49-886441aad1f5/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1689718-5414-4fd9-9f49-886441aad1f5/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-58.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1689718-5414-4fd9-9f49-886441aad1f5/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1689718-5414-4fd9-9f49-886441aad1f5/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a997cf687e351b7f57245bd31acb8cec29ed906aad11e6b7eee545da7afcb34c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:57:39,128 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:57:39,225 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1689718-5414-4fd9-9f49-886441aad1f5/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:57:39,235 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:57:39,236 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:57:39,285 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:57:39,285 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:57:39,286 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:57:39,288 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:57:39,289 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:57:39,290 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:57:39,290 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:57:39,290 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:57:39,290 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:57:39,290 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:57:39,291 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:57:39,291 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:57:39,291 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:57:39,291 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:57:39,291 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:57:39,291 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:57:39,291 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:57:39,291 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:57:39,291 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:57:39,292 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:57:39,292 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:57:39,292 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:57:39,292 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:57:39,292 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:57:39,292 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:57:39,292 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:57:39,292 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:57:39,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:57:39,292 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:57:39,293 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:57:39,293 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:57:39,293 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:57:39,294 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:57:39,294 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:57:39,294 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:57:39,294 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:57:39,294 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:57:39,294 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:57:39,294 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:57:39,295 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:57:39,295 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:57:39,295 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:57:39,295 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:57:39,295 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_a1689718-5414-4fd9-9f49-886441aad1f5/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a997cf687e351b7f57245bd31acb8cec29ed906aad11e6b7eee545da7afcb34c [2024-11-28 03:57:39,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:57:39,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:57:39,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:57:39,664 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:57:39,665 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:57:39,666 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1689718-5414-4fd9-9f49-886441aad1f5/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-58.i [2024-11-28 03:57:42,893 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1689718-5414-4fd9-9f49-886441aad1f5/bin/uautomizer-verify-aQ6SnzHsRB/data/5b97a92fa/9d3ff0da94024f13ac8d21b373c0a82d/FLAGfc9a74601 [2024-11-28 03:57:43,271 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:57:43,290 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1689718-5414-4fd9-9f49-886441aad1f5/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-58.i [2024-11-28 03:57:43,313 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1689718-5414-4fd9-9f49-886441aad1f5/bin/uautomizer-verify-aQ6SnzHsRB/data/5b97a92fa/9d3ff0da94024f13ac8d21b373c0a82d/FLAGfc9a74601 [2024-11-28 03:57:43,485 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1689718-5414-4fd9-9f49-886441aad1f5/bin/uautomizer-verify-aQ6SnzHsRB/data/5b97a92fa/9d3ff0da94024f13ac8d21b373c0a82d [2024-11-28 03:57:43,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:57:43,489 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:57:43,491 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:57:43,491 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:57:43,496 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:57:43,497 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:57:43" (1/1) ... [2024-11-28 03:57:43,498 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f4df9af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:57:43, skipping insertion in model container [2024-11-28 03:57:43,498 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:57:43" (1/1) ... [2024-11-28 03:57:43,525 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:57:43,724 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_a1689718-5414-4fd9-9f49-886441aad1f5/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-58.i[919,932] [2024-11-28 03:57:43,811 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:57:43,825 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:57:43,838 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_a1689718-5414-4fd9-9f49-886441aad1f5/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-58.i[919,932] [2024-11-28 03:57:43,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:57:43,896 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:57:43,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:57:43 WrapperNode [2024-11-28 03:57:43,897 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:57:43,898 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:57:43,898 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:57:43,898 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:57:43,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:57:43" (1/1) ... [2024-11-28 03:57:43,913 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:57:43" (1/1) ... [2024-11-28 03:57:43,953 INFO L138 Inliner]: procedures = 26, calls = 37, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 147 [2024-11-28 03:57:43,953 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:57:43,954 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:57:43,954 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:57:43,954 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:57:43,965 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:57:43" (1/1) ... [2024-11-28 03:57:43,966 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:57:43" (1/1) ... [2024-11-28 03:57:43,969 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:57:43" (1/1) ... [2024-11-28 03:57:43,988 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 03:57:43,988 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:57:43" (1/1) ... [2024-11-28 03:57:43,988 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:57:43" (1/1) ... [2024-11-28 03:57:43,997 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:57:43" (1/1) ... [2024-11-28 03:57:43,999 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:57:43" (1/1) ... [2024-11-28 03:57:44,003 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:57:43" (1/1) ... [2024-11-28 03:57:44,005 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:57:43" (1/1) ... [2024-11-28 03:57:44,007 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:57:43" (1/1) ... [2024-11-28 03:57:44,011 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:57:44,012 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:57:44,012 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:57:44,012 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:57:44,014 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:57:43" (1/1) ... [2024-11-28 03:57:44,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:57:44,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1689718-5414-4fd9-9f49-886441aad1f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:57:44,059 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1689718-5414-4fd9-9f49-886441aad1f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:57:44,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1689718-5414-4fd9-9f49-886441aad1f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:57:44,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:57:44,094 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 03:57:44,094 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 03:57:44,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:57:44,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:57:44,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:57:44,210 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:57:44,212 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:57:44,725 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-28 03:57:44,725 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:57:44,744 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:57:44,744 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:57:44,744 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:57:44 BoogieIcfgContainer [2024-11-28 03:57:44,745 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:57:44,748 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:57:44,748 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:57:44,754 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:57:44,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:57:43" (1/3) ... [2024-11-28 03:57:44,755 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58331351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:57:44, skipping insertion in model container [2024-11-28 03:57:44,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:57:43" (2/3) ... [2024-11-28 03:57:44,755 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58331351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:57:44, skipping insertion in model container [2024-11-28 03:57:44,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:57:44" (3/3) ... [2024-11-28 03:57:44,757 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_dependencies_file-58.i [2024-11-28 03:57:44,776 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:57:44,778 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_codestructure_dependencies_file-58.i that has 2 procedures, 67 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 03:57:44,845 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:57:44,858 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;@10d0903, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:57:44,858 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:57:44,862 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 40 states have (on average 1.4) internal successors, (56), 41 states have internal predecessors, (56), 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) [2024-11-28 03:57:44,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-28 03:57:44,878 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:57:44,879 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] [2024-11-28 03:57:44,879 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:57:44,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:44,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1394519631, now seen corresponding path program 1 times [2024-11-28 03:57:44,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:44,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119790356] [2024-11-28 03:57:44,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:44,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:03,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-28 04:02:03,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:03,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119790356] [2024-11-28 04:02:03,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119790356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:03,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:03,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 04:02:03,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197068990] [2024-11-28 04:02:03,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:03,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:02:03,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:03,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:02:03,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:02:03,314 INFO L87 Difference]: Start difference. First operand has 67 states, 40 states have (on average 1.4) internal successors, (56), 41 states have internal predecessors, (56), 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 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 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) [2024-11-28 04:02:05,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:05,133 INFO L93 Difference]: Finished difference Result 174 states and 302 transitions. [2024-11-28 04:02:05,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:02:05,135 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 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 148 [2024-11-28 04:02:05,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:05,145 INFO L225 Difference]: With dead ends: 174 [2024-11-28 04:02:05,145 INFO L226 Difference]: Without dead ends: 110 [2024-11-28 04:02:05,152 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:02:05,157 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 126 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:05,158 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 428 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 04:02:05,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-28 04:02:05,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 72. [2024-11-28 04:02:05,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 46 states have internal predecessors, (63), 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) [2024-11-28 04:02:05,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 111 transitions. [2024-11-28 04:02:05,215 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 111 transitions. Word has length 148 [2024-11-28 04:02:05,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:05,219 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 111 transitions. [2024-11-28 04:02:05,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 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) [2024-11-28 04:02:05,219 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 111 transitions. [2024-11-28 04:02:05,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-28 04:02:05,224 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:05,224 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] [2024-11-28 04:02:05,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:02:05,225 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:02:05,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:05,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1001492621, now seen corresponding path program 1 times [2024-11-28 04:02:05,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:05,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555691159] [2024-11-28 04:02:05,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:05,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:05,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-28 04:02:05,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:05,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555691159] [2024-11-28 04:02:05,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555691159] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:05,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:05,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:02:05,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744963807] [2024-11-28 04:02:05,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:05,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:02:05,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:05,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:02:05,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:02:05,603 INFO L87 Difference]: Start difference. First operand 72 states and 111 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-28 04:02:05,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:05,921 INFO L93 Difference]: Finished difference Result 209 states and 322 transitions. [2024-11-28 04:02:05,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:02:05,922 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 148 [2024-11-28 04:02:05,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:05,924 INFO L225 Difference]: With dead ends: 209 [2024-11-28 04:02:05,925 INFO L226 Difference]: Without dead ends: 140 [2024-11-28 04:02:05,929 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:02:05,930 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 84 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:05,930 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 373 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:02:05,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-28 04:02:05,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 131. [2024-11-28 04:02:05,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 80 states have (on average 1.3625) internal successors, (109), 80 states have internal predecessors, (109), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-28 04:02:05,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 205 transitions. [2024-11-28 04:02:05,986 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 205 transitions. Word has length 148 [2024-11-28 04:02:05,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:05,987 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 205 transitions. [2024-11-28 04:02:05,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-28 04:02:05,987 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 205 transitions. [2024-11-28 04:02:05,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-28 04:02:05,993 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:05,993 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] [2024-11-28 04:02:05,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:02:05,993 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:02:05,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:05,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1810839247, now seen corresponding path program 1 times [2024-11-28 04:02:05,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:05,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253567759] [2024-11-28 04:02:05,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:05,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:06,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:21,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-28 04:08:21,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:21,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253567759] [2024-11-28 04:08:21,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253567759] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:08:21,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:08:21,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 04:08:21,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769925278] [2024-11-28 04:08:21,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:08:21,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:08:21,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:21,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:08:21,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:08:21,121 INFO L87 Difference]: Start difference. First operand 131 states and 205 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 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) [2024-11-28 04:08:22,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:22,822 INFO L93 Difference]: Finished difference Result 182 states and 274 transitions. [2024-11-28 04:08:22,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:08:22,824 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 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 148 [2024-11-28 04:08:22,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:22,827 INFO L225 Difference]: With dead ends: 182 [2024-11-28 04:08:22,827 INFO L226 Difference]: Without dead ends: 180 [2024-11-28 04:08:22,828 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:08:22,829 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 52 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:08:22,829 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 389 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:08:22,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-28 04:08:22,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 133. [2024-11-28 04:08:22,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 82 states have (on average 1.3658536585365855) internal successors, (112), 82 states have internal predecessors, (112), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-28 04:08:22,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 208 transitions. [2024-11-28 04:08:22,862 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 208 transitions. Word has length 148 [2024-11-28 04:08:22,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:22,863 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 208 transitions. [2024-11-28 04:08:22,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 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) [2024-11-28 04:08:22,863 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 208 transitions. [2024-11-28 04:08:22,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-28 04:08:22,866 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:22,866 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] [2024-11-28 04:08:22,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:08:22,867 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:08:22,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:22,868 INFO L85 PathProgramCache]: Analyzing trace with hash 333937417, now seen corresponding path program 1 times [2024-11-28 04:08:22,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:22,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521750552] [2024-11-28 04:08:22,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:22,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:22,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat