./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-33.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_d0c5f683-b6fe-460e-a39b-ed0be02ffeb4/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c5f683-b6fe-460e-a39b-ed0be02ffeb4/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c5f683-b6fe-460e-a39b-ed0be02ffeb4/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c5f683-b6fe-460e-a39b-ed0be02ffeb4/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-33.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c5f683-b6fe-460e-a39b-ed0be02ffeb4/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c5f683-b6fe-460e-a39b-ed0be02ffeb4/bin/uautomizer-verify-84ZbGMXZE1 --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 8be6ce3aed04a0f72fff72ce21ac27fefd98e972dd5fa46b07e62cac65a15dd5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 11:23:22,366 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 11:23:22,417 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c5f683-b6fe-460e-a39b-ed0be02ffeb4/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 11:23:22,422 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 11:23:22,422 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 11:23:22,442 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 11:23:22,443 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 11:23:22,443 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 11:23:22,443 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 11:23:22,444 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 11:23:22,444 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 11:23:22,444 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 11:23:22,444 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 11:23:22,444 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 11:23:22,444 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 11:23:22,444 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 11:23:22,444 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 11:23:22,445 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 11:23:22,445 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 11:23:22,445 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 11:23:22,445 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 11:23:22,445 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 11:23:22,445 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 11:23:22,445 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 11:23:22,445 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 11:23:22,445 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 11:23:22,445 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 11:23:22,445 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 11:23:22,445 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 11:23:22,446 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:23:22,446 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:23:22,446 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:23:22,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:23:22,446 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 11:23:22,446 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:23:22,446 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:23:22,446 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:23:22,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:23:22,446 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 11:23:22,446 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 11:23:22,446 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 11:23:22,447 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 11:23:22,447 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 11:23:22,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 11:23:22,447 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 11:23:22,447 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 11:23:22,447 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 11:23:22,447 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 11:23:22,447 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_d0c5f683-b6fe-460e-a39b-ed0be02ffeb4/bin/uautomizer-verify-84ZbGMXZE1 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 -> 8be6ce3aed04a0f72fff72ce21ac27fefd98e972dd5fa46b07e62cac65a15dd5 [2024-12-02 11:23:22,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 11:23:22,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 11:23:22,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 11:23:22,678 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 11:23:22,678 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 11:23:22,679 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c5f683-b6fe-460e-a39b-ed0be02ffeb4/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-33.i [2024-12-02 11:23:25,349 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c5f683-b6fe-460e-a39b-ed0be02ffeb4/bin/uautomizer-verify-84ZbGMXZE1/data/e97bb6472/585a03c468bf4c959101fc1d63836e40/FLAGfe3b8a104 [2024-12-02 11:23:25,559 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 11:23:25,559 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c5f683-b6fe-460e-a39b-ed0be02ffeb4/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-33.i [2024-12-02 11:23:25,568 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c5f683-b6fe-460e-a39b-ed0be02ffeb4/bin/uautomizer-verify-84ZbGMXZE1/data/e97bb6472/585a03c468bf4c959101fc1d63836e40/FLAGfe3b8a104 [2024-12-02 11:23:25,906 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c5f683-b6fe-460e-a39b-ed0be02ffeb4/bin/uautomizer-verify-84ZbGMXZE1/data/e97bb6472/585a03c468bf4c959101fc1d63836e40 [2024-12-02 11:23:25,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 11:23:25,909 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 11:23:25,909 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 11:23:25,910 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 11:23:25,912 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 11:23:25,913 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:23:25" (1/1) ... [2024-12-02 11:23:25,913 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48d4c944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:23:25, skipping insertion in model container [2024-12-02 11:23:25,914 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:23:25" (1/1) ... [2024-12-02 11:23:25,929 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 11:23:26,051 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_d0c5f683-b6fe-460e-a39b-ed0be02ffeb4/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-33.i[915,928] [2024-12-02 11:23:26,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:23:26,108 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 11:23:26,115 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_d0c5f683-b6fe-460e-a39b-ed0be02ffeb4/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-33.i[915,928] [2024-12-02 11:23:26,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:23:26,153 INFO L204 MainTranslator]: Completed translation [2024-12-02 11:23:26,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:23:26 WrapperNode [2024-12-02 11:23:26,153 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 11:23:26,154 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 11:23:26,154 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 11:23:26,154 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 11:23:26,160 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:23:26" (1/1) ... [2024-12-02 11:23:26,170 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:23:26" (1/1) ... [2024-12-02 11:23:26,192 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 242 [2024-12-02 11:23:26,192 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 11:23:26,193 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 11:23:26,193 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 11:23:26,193 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 11:23:26,199 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:23:26" (1/1) ... [2024-12-02 11:23:26,199 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:23:26" (1/1) ... [2024-12-02 11:23:26,202 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:23:26" (1/1) ... [2024-12-02 11:23:26,216 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]. [2024-12-02 11:23:26,217 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:23:26" (1/1) ... [2024-12-02 11:23:26,217 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:23:26" (1/1) ... [2024-12-02 11:23:26,226 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:23:26" (1/1) ... [2024-12-02 11:23:26,228 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:23:26" (1/1) ... [2024-12-02 11:23:26,231 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:23:26" (1/1) ... [2024-12-02 11:23:26,234 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:23:26" (1/1) ... [2024-12-02 11:23:26,236 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:23:26" (1/1) ... [2024-12-02 11:23:26,240 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 11:23:26,241 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 11:23:26,241 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 11:23:26,241 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 11:23:26,242 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:23:26" (1/1) ... [2024-12-02 11:23:26,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:23:26,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c5f683-b6fe-460e-a39b-ed0be02ffeb4/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:23:26,272 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c5f683-b6fe-460e-a39b-ed0be02ffeb4/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 11:23:26,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c5f683-b6fe-460e-a39b-ed0be02ffeb4/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 11:23:26,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 11:23:26,295 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 11:23:26,295 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 11:23:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 11:23:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 11:23:26,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 11:23:26,373 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 11:23:26,375 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 11:23:26,720 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-12-02 11:23:26,720 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 11:23:26,730 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 11:23:26,730 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 11:23:26,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:23:26 BoogieIcfgContainer [2024-12-02 11:23:26,731 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 11:23:26,733 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 11:23:26,733 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 11:23:26,737 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 11:23:26,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:23:25" (1/3) ... [2024-12-02 11:23:26,737 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d184352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:23:26, skipping insertion in model container [2024-12-02 11:23:26,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:23:26" (2/3) ... [2024-12-02 11:23:26,738 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d184352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:23:26, skipping insertion in model container [2024-12-02 11:23:26,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:23:26" (3/3) ... [2024-12-02 11:23:26,739 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-25_file-33.i [2024-12-02 11:23:26,750 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 11:23:26,752 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-25_file-33.i that has 2 procedures, 101 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 11:23:26,800 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:23:26,810 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;@70aab77f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:23:26,810 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 11:23:26,813 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 66 states have (on average 1.393939393939394) internal successors, (92), 67 states have internal predecessors, (92), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-12-02 11:23:26,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-12-02 11:23:26,823 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:23:26,824 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:23:26,824 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:23:26,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:23:26,828 INFO L85 PathProgramCache]: Analyzing trace with hash -369829120, now seen corresponding path program 1 times [2024-12-02 11:23:26,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:23:26,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389510906] [2024-12-02 11:23:26,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:23:26,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:23:26,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:23:27,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked. [2024-12-02 11:23:27,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:23:27,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389510906] [2024-12-02 11:23:27,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389510906] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:23:27,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617862745] [2024-12-02 11:23:27,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:23:27,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:23:27,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c5f683-b6fe-460e-a39b-ed0be02ffeb4/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:23:27,114 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c5f683-b6fe-460e-a39b-ed0be02ffeb4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:23:27,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c5f683-b6fe-460e-a39b-ed0be02ffeb4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 11:23:27,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:23:27,291 INFO L256 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 11:23:27,299 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:23:27,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked. [2024-12-02 11:23:27,329 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:23:27,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617862745] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:23:27,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:23:27,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 11:23:27,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074887967] [2024-12-02 11:23:27,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:23:27,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 11:23:27,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:23:27,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 11:23:27,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 11:23:27,352 INFO L87 Difference]: Start difference. First operand has 101 states, 66 states have (on average 1.393939393939394) internal successors, (92), 67 states have internal predecessors, (92), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 2 states have call successors, (32) [2024-12-02 11:23:27,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:23:27,379 INFO L93 Difference]: Finished difference Result 195 states and 338 transitions. [2024-12-02 11:23:27,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 11:23:27,380 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 2 states have call successors, (32) Word has length 204 [2024-12-02 11:23:27,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:23:27,386 INFO L225 Difference]: With dead ends: 195 [2024-12-02 11:23:27,386 INFO L226 Difference]: Without dead ends: 97 [2024-12-02 11:23:27,389 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 11:23:27,391 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:23:27,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:23:27,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-12-02 11:23:27,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2024-12-02 11:23:27,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 63 states have (on average 1.3333333333333333) internal successors, (84), 63 states have internal predecessors, (84), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-12-02 11:23:27,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 148 transitions. [2024-12-02 11:23:27,426 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 148 transitions. Word has length 204 [2024-12-02 11:23:27,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:23:27,427 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 148 transitions. [2024-12-02 11:23:27,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 2 states have call successors, (32) [2024-12-02 11:23:27,427 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 148 transitions. [2024-12-02 11:23:27,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-12-02 11:23:27,429 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:23:27,429 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:23:27,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c5f683-b6fe-460e-a39b-ed0be02ffeb4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 11:23:27,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c5f683-b6fe-460e-a39b-ed0be02ffeb4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:23:27,630 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:23:27,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:23:27,631 INFO L85 PathProgramCache]: Analyzing trace with hash 760344448, now seen corresponding path program 1 times [2024-12-02 11:23:27,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:23:27,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261302801] [2024-12-02 11:23:27,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:23:27,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:23:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:23:28,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-12-02 11:23:28,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:23:28,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261302801] [2024-12-02 11:23:28,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261302801] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:23:28,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:23:28,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:23:28,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261483765] [2024-12-02 11:23:28,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:23:28,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:23:28,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:23:28,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:23:28,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:23:28,517 INFO L87 Difference]: Start difference. First operand 97 states and 148 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2024-12-02 11:23:28,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:23:28,888 INFO L93 Difference]: Finished difference Result 290 states and 446 transitions. [2024-12-02 11:23:28,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:23:28,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 204 [2024-12-02 11:23:28,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:23:28,892 INFO L225 Difference]: With dead ends: 290 [2024-12-02 11:23:28,892 INFO L226 Difference]: Without dead ends: 196 [2024-12-02 11:23:28,893 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:23:28,894 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 113 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 11:23:28,894 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 381 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 11:23:28,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-12-02 11:23:28,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 182. [2024-12-02 11:23:28,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 115 states have (on average 1.3304347826086957) internal successors, (153), 115 states have internal predecessors, (153), 64 states have call successors, (64), 2 states have call predecessors, (64), 2 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2024-12-02 11:23:28,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 281 transitions. [2024-12-02 11:23:28,933 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 281 transitions. Word has length 204 [2024-12-02 11:23:28,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:23:28,934 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 281 transitions. [2024-12-02 11:23:28,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2024-12-02 11:23:28,934 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 281 transitions. [2024-12-02 11:23:28,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-12-02 11:23:28,937 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:23:28,938 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:23:28,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 11:23:28,938 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:23:28,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:23:28,938 INFO L85 PathProgramCache]: Analyzing trace with hash 2113411246, now seen corresponding path program 1 times [2024-12-02 11:23:28,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:23:28,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026309802] [2024-12-02 11:23:28,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:23:28,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:23:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:23:29,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-12-02 11:23:29,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:23:29,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026309802] [2024-12-02 11:23:29,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026309802] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:23:29,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:23:29,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:23:29,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003524766] [2024-12-02 11:23:29,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:23:29,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:23:29,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:23:29,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:23:29,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:23:29,173 INFO L87 Difference]: Start difference. First operand 182 states and 281 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2024-12-02 11:23:29,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:23:29,433 INFO L93 Difference]: Finished difference Result 299 states and 457 transitions. [2024-12-02 11:23:29,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:23:29,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 205 [2024-12-02 11:23:29,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:23:29,436 INFO L225 Difference]: With dead ends: 299 [2024-12-02 11:23:29,436 INFO L226 Difference]: Without dead ends: 192 [2024-12-02 11:23:29,437 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:23:29,437 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 110 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:23:29,437 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 386 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 11:23:29,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-12-02 11:23:29,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 183. [2024-12-02 11:23:29,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 116 states have (on average 1.3189655172413792) internal successors, (153), 116 states have internal predecessors, (153), 64 states have call successors, (64), 2 states have call predecessors, (64), 2 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2024-12-02 11:23:29,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 281 transitions. [2024-12-02 11:23:29,471 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 281 transitions. Word has length 205 [2024-12-02 11:23:29,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:23:29,471 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 281 transitions. [2024-12-02 11:23:29,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2024-12-02 11:23:29,472 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 281 transitions. [2024-12-02 11:23:29,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-12-02 11:23:29,474 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:23:29,474 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:23:29,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 11:23:29,474 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:23:29,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:23:29,475 INFO L85 PathProgramCache]: Analyzing trace with hash -407866851, now seen corresponding path program 1 times [2024-12-02 11:23:29,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:23:29,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477057474] [2024-12-02 11:23:29,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:23:29,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:23:29,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat