./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-52.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_f27608b1-dcfb-4892-8aaf-2985b77cc989/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27608b1-dcfb-4892-8aaf-2985b77cc989/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_f27608b1-dcfb-4892-8aaf-2985b77cc989/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27608b1-dcfb-4892-8aaf-2985b77cc989/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-52.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27608b1-dcfb-4892-8aaf-2985b77cc989/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_f27608b1-dcfb-4892-8aaf-2985b77cc989/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 f936db2b47677a90e81718d3591b9d45243b1a66e00c73ec4ccd3f4a235b10d9 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 13:03:15,367 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 13:03:15,420 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27608b1-dcfb-4892-8aaf-2985b77cc989/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 13:03:15,424 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 13:03:15,424 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 13:03:15,445 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 13:03:15,446 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 13:03:15,446 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 13:03:15,447 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 13:03:15,447 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 13:03:15,447 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 13:03:15,447 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 13:03:15,447 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 13:03:15,447 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 13:03:15,447 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 13:03:15,447 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 13:03:15,448 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 13:03:15,448 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 13:03:15,448 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 13:03:15,448 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 13:03:15,448 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 13:03:15,448 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 13:03:15,448 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 13:03:15,448 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 13:03:15,448 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 13:03:15,448 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 13:03:15,448 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 13:03:15,448 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 13:03:15,449 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 13:03:15,449 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:03:15,449 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:03:15,449 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:03:15,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:03:15,449 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 13:03:15,449 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:03:15,449 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:03:15,449 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:03:15,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:03:15,450 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 13:03:15,450 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 13:03:15,450 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 13:03:15,450 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 13:03:15,450 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 13:03:15,450 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 13:03:15,450 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 13:03:15,450 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 13:03:15,450 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 13:03:15,450 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 13:03:15,450 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_f27608b1-dcfb-4892-8aaf-2985b77cc989/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 -> f936db2b47677a90e81718d3591b9d45243b1a66e00c73ec4ccd3f4a235b10d9 [2024-12-02 13:03:15,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 13:03:15,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 13:03:15,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 13:03:15,673 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 13:03:15,673 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 13:03:15,674 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27608b1-dcfb-4892-8aaf-2985b77cc989/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-52.i [2024-12-02 13:03:18,334 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27608b1-dcfb-4892-8aaf-2985b77cc989/bin/uautomizer-verify-84ZbGMXZE1/data/7501a3373/bd566e8d3f30439da8ad2330d3dc5dae/FLAGb38c645a3 [2024-12-02 13:03:18,522 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 13:03:18,523 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27608b1-dcfb-4892-8aaf-2985b77cc989/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-52.i [2024-12-02 13:03:18,530 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27608b1-dcfb-4892-8aaf-2985b77cc989/bin/uautomizer-verify-84ZbGMXZE1/data/7501a3373/bd566e8d3f30439da8ad2330d3dc5dae/FLAGb38c645a3 [2024-12-02 13:03:18,541 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27608b1-dcfb-4892-8aaf-2985b77cc989/bin/uautomizer-verify-84ZbGMXZE1/data/7501a3373/bd566e8d3f30439da8ad2330d3dc5dae [2024-12-02 13:03:18,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 13:03:18,544 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 13:03:18,545 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 13:03:18,545 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 13:03:18,548 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 13:03:18,549 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:03:18" (1/1) ... [2024-12-02 13:03:18,549 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69c5a098 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:03:18, skipping insertion in model container [2024-12-02 13:03:18,550 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:03:18" (1/1) ... [2024-12-02 13:03:18,568 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 13:03:18,701 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_f27608b1-dcfb-4892-8aaf-2985b77cc989/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-52.i[919,932] [2024-12-02 13:03:18,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:03:18,774 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 13:03:18,783 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_f27608b1-dcfb-4892-8aaf-2985b77cc989/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-52.i[919,932] [2024-12-02 13:03:18,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:03:18,828 INFO L204 MainTranslator]: Completed translation [2024-12-02 13:03:18,828 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:03:18 WrapperNode [2024-12-02 13:03:18,829 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 13:03:18,830 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 13:03:18,830 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 13:03:18,830 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 13:03:18,835 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:03:18" (1/1) ... [2024-12-02 13:03:18,846 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:03:18" (1/1) ... [2024-12-02 13:03:18,873 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 246 [2024-12-02 13:03:18,873 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 13:03:18,874 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 13:03:18,874 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 13:03:18,874 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 13:03:18,883 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:03:18" (1/1) ... [2024-12-02 13:03:18,883 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:03:18" (1/1) ... [2024-12-02 13:03:18,885 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:03:18" (1/1) ... [2024-12-02 13:03:18,900 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 13:03:18,900 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:03:18" (1/1) ... [2024-12-02 13:03:18,901 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:03:18" (1/1) ... [2024-12-02 13:03:18,908 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:03:18" (1/1) ... [2024-12-02 13:03:18,909 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:03:18" (1/1) ... [2024-12-02 13:03:18,913 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:03:18" (1/1) ... [2024-12-02 13:03:18,915 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:03:18" (1/1) ... [2024-12-02 13:03:18,916 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:03:18" (1/1) ... [2024-12-02 13:03:18,919 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 13:03:18,920 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 13:03:18,920 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 13:03:18,920 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 13:03:18,921 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:03:18" (1/1) ... [2024-12-02 13:03:18,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:03:18,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27608b1-dcfb-4892-8aaf-2985b77cc989/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:03:18,950 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27608b1-dcfb-4892-8aaf-2985b77cc989/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 13:03:18,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27608b1-dcfb-4892-8aaf-2985b77cc989/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 13:03:18,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 13:03:18,973 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 13:03:18,973 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 13:03:18,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 13:03:18,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 13:03:18,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 13:03:19,050 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 13:03:19,052 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 13:03:19,390 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-12-02 13:03:19,390 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 13:03:19,400 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 13:03:19,400 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 13:03:19,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:03:19 BoogieIcfgContainer [2024-12-02 13:03:19,400 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 13:03:19,403 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 13:03:19,403 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 13:03:19,406 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 13:03:19,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:03:18" (1/3) ... [2024-12-02 13:03:19,407 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145958aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:03:19, skipping insertion in model container [2024-12-02 13:03:19,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:03:18" (2/3) ... [2024-12-02 13:03:19,407 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145958aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:03:19, skipping insertion in model container [2024-12-02 13:03:19,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:03:19" (3/3) ... [2024-12-02 13:03:19,408 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-cn_file-52.i [2024-12-02 13:03:19,419 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 13:03:19,421 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pr-cn_file-52.i that has 2 procedures, 105 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 13:03:19,484 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 13:03:19,496 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;@6e97ca1d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 13:03:19,496 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 13:03:19,500 INFO L276 IsEmpty]: Start isEmpty. Operand has 105 states, 68 states have (on average 1.4264705882352942) internal successors, (97), 69 states have internal predecessors, (97), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-12-02 13:03:19,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-12-02 13:03:19,512 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:03:19,513 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:03:19,513 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:03:19,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:03:19,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1659906726, now seen corresponding path program 1 times [2024-12-02 13:03:19,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:03:19,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597386721] [2024-12-02 13:03:19,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:03:19,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:03:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:03:19,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2024-12-02 13:03:19,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:03:19,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597386721] [2024-12-02 13:03:19,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597386721] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:03:19,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386932292] [2024-12-02 13:03:19,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:03:19,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:03:19,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27608b1-dcfb-4892-8aaf-2985b77cc989/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:03:19,825 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27608b1-dcfb-4892-8aaf-2985b77cc989/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:03:19,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27608b1-dcfb-4892-8aaf-2985b77cc989/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 13:03:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:03:20,002 INFO L256 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 13:03:20,010 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:03:20,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2024-12-02 13:03:20,039 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:03:20,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386932292] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:03:20,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:03:20,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 13:03:20,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437163795] [2024-12-02 13:03:20,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:03:20,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 13:03:20,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:03:20,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 13:03:20,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 13:03:20,061 INFO L87 Difference]: Start difference. First operand has 105 states, 68 states have (on average 1.4264705882352942) internal successors, (97), 69 states have internal predecessors, (97), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2024-12-02 13:03:20,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:03:20,089 INFO L93 Difference]: Finished difference Result 203 states and 358 transitions. [2024-12-02 13:03:20,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 13:03:20,091 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) Word has length 218 [2024-12-02 13:03:20,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:03:20,096 INFO L225 Difference]: With dead ends: 203 [2024-12-02 13:03:20,097 INFO L226 Difference]: Without dead ends: 101 [2024-12-02 13:03:20,100 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 219 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 13:03:20,102 INFO L435 NwaCegarLoop]: 158 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, 158 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 13:03:20,103 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:03:20,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-12-02 13:03:20,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-12-02 13:03:20,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.3846153846153846) internal successors, (90), 65 states have internal predecessors, (90), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-12-02 13:03:20,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 158 transitions. [2024-12-02 13:03:20,140 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 158 transitions. Word has length 218 [2024-12-02 13:03:20,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:03:20,140 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 158 transitions. [2024-12-02 13:03:20,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2024-12-02 13:03:20,141 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 158 transitions. [2024-12-02 13:03:20,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-12-02 13:03:20,160 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:03:20,160 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:03:20,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27608b1-dcfb-4892-8aaf-2985b77cc989/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 13:03:20,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27608b1-dcfb-4892-8aaf-2985b77cc989/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 13:03:20,361 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:03:20,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:03:20,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1018310690, now seen corresponding path program 1 times [2024-12-02 13:03:20,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:03:20,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617431904] [2024-12-02 13:03:20,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:03:20,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:03:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:03:20,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-12-02 13:03:20,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:03:20,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617431904] [2024-12-02 13:03:20,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617431904] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:03:20,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:03:20,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:03:20,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411819821] [2024-12-02 13:03:20,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:03:20,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:03:20,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:03:20,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:03:20,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:03:20,923 INFO L87 Difference]: Start difference. First operand 101 states and 158 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:03:21,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:03:21,175 INFO L93 Difference]: Finished difference Result 267 states and 419 transitions. [2024-12-02 13:03:21,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:03:21,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 218 [2024-12-02 13:03:21,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:03:21,179 INFO L225 Difference]: With dead ends: 267 [2024-12-02 13:03:21,179 INFO L226 Difference]: Without dead ends: 169 [2024-12-02 13:03:21,180 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:03:21,181 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 100 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:03:21,181 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 599 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 13:03:21,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-12-02 13:03:21,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 166. [2024-12-02 13:03:21,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 113 states have (on average 1.424778761061947) internal successors, (161), 114 states have internal predecessors, (161), 50 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2024-12-02 13:03:21,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 261 transitions. [2024-12-02 13:03:21,202 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 261 transitions. Word has length 218 [2024-12-02 13:03:21,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:03:21,203 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 261 transitions. [2024-12-02 13:03:21,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:03:21,203 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 261 transitions. [2024-12-02 13:03:21,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-12-02 13:03:21,206 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:03:21,206 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:03:21,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 13:03:21,207 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:03:21,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:03:21,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1441012516, now seen corresponding path program 1 times [2024-12-02 13:03:21,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:03:21,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168413383] [2024-12-02 13:03:21,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:03:21,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:03:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:03:21,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-12-02 13:03:21,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:03:21,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168413383] [2024-12-02 13:03:21,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168413383] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:03:21,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:03:21,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:03:21,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238432495] [2024-12-02 13:03:21,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:03:21,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:03:21,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:03:21,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:03:21,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:03:21,468 INFO L87 Difference]: Start difference. First operand 166 states and 261 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:03:21,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:03:21,520 INFO L93 Difference]: Finished difference Result 456 states and 719 transitions. [2024-12-02 13:03:21,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:03:21,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 218 [2024-12-02 13:03:21,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:03:21,525 INFO L225 Difference]: With dead ends: 456 [2024-12-02 13:03:21,525 INFO L226 Difference]: Without dead ends: 293 [2024-12-02 13:03:21,526 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:03:21,527 INFO L435 NwaCegarLoop]: 205 mSDtfsCounter, 100 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:03:21,527 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 353 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:03:21,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2024-12-02 13:03:21,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 290. [2024-12-02 13:03:21,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 201 states have (on average 1.4378109452736318) internal successors, (289), 204 states have internal predecessors, (289), 84 states have call successors, (84), 4 states have call predecessors, (84), 4 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2024-12-02 13:03:21,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 457 transitions. [2024-12-02 13:03:21,561 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 457 transitions. Word has length 218 [2024-12-02 13:03:21,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:03:21,562 INFO L471 AbstractCegarLoop]: Abstraction has 290 states and 457 transitions. [2024-12-02 13:03:21,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:03:21,563 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 457 transitions. [2024-12-02 13:03:21,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-12-02 13:03:21,566 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:03:21,566 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:03:21,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 13:03:21,566 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:03:21,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:03:21,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1575797234, now seen corresponding path program 1 times [2024-12-02 13:03:21,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:03:21,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544027662] [2024-12-02 13:03:21,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:03:21,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:03:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:03:29,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-12-02 13:03:29,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:03:29,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544027662] [2024-12-02 13:03:29,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544027662] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:03:29,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:03:29,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 13:03:29,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059088382] [2024-12-02 13:03:29,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:03:29,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 13:03:29,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:03:29,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 13:03:29,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2024-12-02 13:03:29,298 INFO L87 Difference]: Start difference. First operand 290 states and 457 transitions. Second operand has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-12-02 13:03:35,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:03:35,706 INFO L93 Difference]: Finished difference Result 1306 states and 2025 transitions. [2024-12-02 13:03:35,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-12-02 13:03:35,707 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 219 [2024-12-02 13:03:35,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:03:35,711 INFO L225 Difference]: With dead ends: 1306 [2024-12-02 13:03:35,711 INFO L226 Difference]: Without dead ends: 1304 [2024-12-02 13:03:35,712 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=637, Invalid=1813, Unknown=0, NotChecked=0, Total=2450 [2024-12-02 13:03:35,713 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 733 mSDsluCounter, 1370 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 1532 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-02 13:03:35,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 1532 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-02 13:03:35,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2024-12-02 13:03:35,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 771. [2024-12-02 13:03:35,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 594 states have (on average 1.4848484848484849) internal successors, (882), 600 states have internal predecessors, (882), 168 states have call successors, (168), 8 states have call predecessors, (168), 8 states have return successors, (168), 162 states have call predecessors, (168), 168 states have call successors, (168) [2024-12-02 13:03:35,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1218 transitions. [2024-12-02 13:03:35,800 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1218 transitions. Word has length 219 [2024-12-02 13:03:35,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:03:35,801 INFO L471 AbstractCegarLoop]: Abstraction has 771 states and 1218 transitions. [2024-12-02 13:03:35,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-12-02 13:03:35,801 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1218 transitions. [2024-12-02 13:03:35,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-12-02 13:03:35,805 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:03:35,805 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:03:35,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 13:03:35,805 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:03:35,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:03:35,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1130822160, now seen corresponding path program 1 times [2024-12-02 13:03:35,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:03:35,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337047181] [2024-12-02 13:03:35,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:03:35,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:03:35,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:03:36,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-12-02 13:03:36,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:03:36,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337047181] [2024-12-02 13:03:36,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337047181] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:03:36,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:03:36,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:03:36,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480137835] [2024-12-02 13:03:36,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:03:36,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:03:36,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:03:36,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:03:36,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:03:36,055 INFO L87 Difference]: Start difference. First operand 771 states and 1218 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:03:36,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:03:36,347 INFO L93 Difference]: Finished difference Result 2105 states and 3329 transitions. [2024-12-02 13:03:36,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:03:36,348 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 219 [2024-12-02 13:03:36,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:03:36,356 INFO L225 Difference]: With dead ends: 2105 [2024-12-02 13:03:36,356 INFO L226 Difference]: Without dead ends: 1337 [2024-12-02 13:03:36,358 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:03:36,359 INFO L435 NwaCegarLoop]: 273 mSDtfsCounter, 199 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:03:36,359 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 732 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 13:03:36,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2024-12-02 13:03:36,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 868. [2024-12-02 13:03:36,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 655 states have (on average 1.465648854961832) internal successors, (960), 662 states have internal predecessors, (960), 202 states have call successors, (202), 10 states have call predecessors, (202), 10 states have return successors, (202), 195 states have call predecessors, (202), 202 states have call successors, (202) [2024-12-02 13:03:36,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1364 transitions. [2024-12-02 13:03:36,454 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1364 transitions. Word has length 219 [2024-12-02 13:03:36,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:03:36,454 INFO L471 AbstractCegarLoop]: Abstraction has 868 states and 1364 transitions. [2024-12-02 13:03:36,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:03:36,455 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1364 transitions. [2024-12-02 13:03:36,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-12-02 13:03:36,458 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:03:36,458 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:03:36,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 13:03:36,458 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:03:36,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:03:36,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1274101518, now seen corresponding path program 1 times [2024-12-02 13:03:36,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:03:36,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574536211] [2024-12-02 13:03:36,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:03:36,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:03:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat