./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-32.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3023b826-b61a-43c3-a6c2-a18dec9f1f45/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3023b826-b61a-43c3-a6c2-a18dec9f1f45/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3023b826-b61a-43c3-a6c2-a18dec9f1f45/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3023b826-b61a-43c3-a6c2-a18dec9f1f45/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-32.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3023b826-b61a-43c3-a6c2-a18dec9f1f45/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3023b826-b61a-43c3-a6c2-a18dec9f1f45/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a3ace122b1e1ec58f75c9939f157863ad20805c3ed845fddb96d7761951d3563 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:17:22,063 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:17:22,144 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3023b826-b61a-43c3-a6c2-a18dec9f1f45/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:17:22,150 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:17:22,150 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:17:22,195 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:17:22,198 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:17:22,198 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:17:22,199 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:17:22,199 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:17:22,200 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:17:22,201 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:17:22,201 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:17:22,201 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:17:22,202 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:17:22,202 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:17:22,202 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:17:22,202 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:17:22,202 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:17:22,202 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:17:22,202 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:17:22,202 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:17:22,202 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:17:22,202 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:17:22,202 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:17:22,203 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:17:22,204 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:17:22,204 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:17:22,204 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:17:22,204 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:17:22,204 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:17:22,204 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:17:22,205 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:17:22,205 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:17:22,206 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:17:22,206 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:17:22,206 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:17:22,206 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:17:22,206 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:17:22,206 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:17:22,207 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:17:22,207 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:17:22,207 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:17:22,207 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:17:22,207 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:17:22,207 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:17:22,207 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:17:22,207 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:17:22,207 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_3023b826-b61a-43c3-a6c2-a18dec9f1f45/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3ace122b1e1ec58f75c9939f157863ad20805c3ed845fddb96d7761951d3563 [2024-11-24 00:17:22,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:17:22,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:17:22,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:17:22,621 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:17:22,622 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:17:22,623 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3023b826-b61a-43c3-a6c2-a18dec9f1f45/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-32.i [2024-11-24 00:17:25,900 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3023b826-b61a-43c3-a6c2-a18dec9f1f45/bin/uautomizer-verify-LYvppIcaGC/data/c5c57c2fc/6f379173d1864c899f34010e01e62020/FLAG7c7f804f3 [2024-11-24 00:17:26,254 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:17:26,255 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3023b826-b61a-43c3-a6c2-a18dec9f1f45/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-32.i [2024-11-24 00:17:26,265 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3023b826-b61a-43c3-a6c2-a18dec9f1f45/bin/uautomizer-verify-LYvppIcaGC/data/c5c57c2fc/6f379173d1864c899f34010e01e62020/FLAG7c7f804f3 [2024-11-24 00:17:26,281 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3023b826-b61a-43c3-a6c2-a18dec9f1f45/bin/uautomizer-verify-LYvppIcaGC/data/c5c57c2fc/6f379173d1864c899f34010e01e62020 [2024-11-24 00:17:26,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:17:26,286 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:17:26,287 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:17:26,287 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:17:26,292 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:17:26,293 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:17:26" (1/1) ... [2024-11-24 00:17:26,294 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31d1cdc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:26, skipping insertion in model container [2024-11-24 00:17:26,294 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:17:26" (1/1) ... [2024-11-24 00:17:26,314 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:17:26,531 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_3023b826-b61a-43c3-a6c2-a18dec9f1f45/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-32.i[916,929] [2024-11-24 00:17:26,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:17:26,660 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:17:26,676 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_3023b826-b61a-43c3-a6c2-a18dec9f1f45/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-32.i[916,929] [2024-11-24 00:17:26,751 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:17:26,785 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:17:26,786 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:26 WrapperNode [2024-11-24 00:17:26,787 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:17:26,788 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:17:26,788 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:17:26,789 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:17:26,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:26" (1/1) ... [2024-11-24 00:17:26,812 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:26" (1/1) ... [2024-11-24 00:17:26,874 INFO L138 Inliner]: procedures = 27, calls = 154, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 432 [2024-11-24 00:17:26,874 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:17:26,875 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:17:26,875 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:17:26,875 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:17:26,883 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:26" (1/1) ... [2024-11-24 00:17:26,883 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:26" (1/1) ... [2024-11-24 00:17:26,889 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:26" (1/1) ... [2024-11-24 00:17:26,918 INFO L175 MemorySlicer]: Split 125 memory accesses to 2 slices as follows [2, 123]. 98 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 28 writes are split as follows [0, 28]. [2024-11-24 00:17:26,919 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:26" (1/1) ... [2024-11-24 00:17:26,919 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:26" (1/1) ... [2024-11-24 00:17:26,938 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:26" (1/1) ... [2024-11-24 00:17:26,939 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:26" (1/1) ... [2024-11-24 00:17:26,944 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:26" (1/1) ... [2024-11-24 00:17:26,946 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:26" (1/1) ... [2024-11-24 00:17:26,948 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:26" (1/1) ... [2024-11-24 00:17:26,952 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:17:26,953 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:17:26,954 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:17:26,954 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:17:26,958 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:26" (1/1) ... [2024-11-24 00:17:26,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:17:26,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3023b826-b61a-43c3-a6c2-a18dec9f1f45/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:17:27,004 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3023b826-b61a-43c3-a6c2-a18dec9f1f45/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:17:27,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3023b826-b61a-43c3-a6c2-a18dec9f1f45/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:17:27,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:17:27,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-24 00:17:27,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-24 00:17:27,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 00:17:27,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 00:17:27,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 00:17:27,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 00:17:27,035 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 00:17:27,035 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 00:17:27,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:17:27,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 00:17:27,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:17:27,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:17:27,202 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:17:27,205 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:17:27,841 INFO L? ?]: Removed 107 outVars from TransFormulas that were not future-live. [2024-11-24 00:17:27,841 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:17:27,860 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:17:27,860 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 00:17:27,860 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:17:27 BoogieIcfgContainer [2024-11-24 00:17:27,861 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:17:27,864 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:17:27,864 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:17:27,870 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:17:27,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:17:26" (1/3) ... [2024-11-24 00:17:27,871 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@537ed18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:17:27, skipping insertion in model container [2024-11-24 00:17:27,871 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:26" (2/3) ... [2024-11-24 00:17:27,871 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@537ed18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:17:27, skipping insertion in model container [2024-11-24 00:17:27,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:17:27" (3/3) ... [2024-11-24 00:17:27,873 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-32.i [2024-11-24 00:17:27,920 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:17:27,922 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-s_file-32.i that has 2 procedures, 99 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 00:17:27,978 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:17:27,991 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;@652f456b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:17:27,992 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:17:27,997 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 78 states have (on average 1.3717948717948718) internal successors, (107), 79 states have internal predecessors, (107), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-24 00:17:28,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-24 00:17:28,010 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:28,011 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:28,012 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:28,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:28,018 INFO L85 PathProgramCache]: Analyzing trace with hash 331903658, now seen corresponding path program 1 times [2024-11-24 00:17:28,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:28,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948064897] [2024-11-24 00:17:28,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:28,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:28,407 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2024-11-24 00:17:28,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:28,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948064897] [2024-11-24 00:17:28,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948064897] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:17:28,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433958940] [2024-11-24 00:17:28,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:28,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:17:28,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3023b826-b61a-43c3-a6c2-a18dec9f1f45/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:17:28,412 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3023b826-b61a-43c3-a6c2-a18dec9f1f45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:17:28,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3023b826-b61a-43c3-a6c2-a18dec9f1f45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:17:28,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:28,686 INFO L256 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 00:17:28,698 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:17:28,737 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2024-11-24 00:17:28,737 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:17:28,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433958940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:28,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:17:28,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 00:17:28,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305976674] [2024-11-24 00:17:28,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:28,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:17:28,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:28,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:17:28,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:17:28,769 INFO L87 Difference]: Start difference. First operand has 99 states, 78 states have (on average 1.3717948717948718) internal successors, (107), 79 states have internal predecessors, (107), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-24 00:17:28,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:17:28,804 INFO L93 Difference]: Finished difference Result 191 states and 298 transitions. [2024-11-24 00:17:28,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:17:28,806 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 129 [2024-11-24 00:17:28,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:17:28,814 INFO L225 Difference]: With dead ends: 191 [2024-11-24 00:17:28,814 INFO L226 Difference]: Without dead ends: 95 [2024-11-24 00:17:28,818 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:17:28,821 INFO L435 NwaCegarLoop]: 132 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, 132 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:17:28,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:17:28,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-24 00:17:28,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-11-24 00:17:28,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 75 states have (on average 1.28) internal successors, (96), 75 states have internal predecessors, (96), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-24 00:17:28,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 132 transitions. [2024-11-24 00:17:28,867 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 132 transitions. Word has length 129 [2024-11-24 00:17:28,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:17:28,867 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 132 transitions. [2024-11-24 00:17:28,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-24 00:17:28,868 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 132 transitions. [2024-11-24 00:17:28,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-24 00:17:28,873 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:28,873 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:28,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3023b826-b61a-43c3-a6c2-a18dec9f1f45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 00:17:29,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3023b826-b61a-43c3-a6c2-a18dec9f1f45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:17:29,074 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:29,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:29,075 INFO L85 PathProgramCache]: Analyzing trace with hash -718817914, now seen corresponding path program 1 times [2024-11-24 00:17:29,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:29,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071159904] [2024-11-24 00:17:29,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:29,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:30,272 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-24 00:17:30,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:30,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071159904] [2024-11-24 00:17:30,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071159904] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:30,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:30,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:17:30,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340235027] [2024-11-24 00:17:30,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:30,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:17:30,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:30,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:17:30,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:17:30,276 INFO L87 Difference]: Start difference. First operand 95 states and 132 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-24 00:17:30,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:17:30,814 INFO L93 Difference]: Finished difference Result 318 states and 444 transitions. [2024-11-24 00:17:30,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:17:30,815 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 129 [2024-11-24 00:17:30,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:17:30,820 INFO L225 Difference]: With dead ends: 318 [2024-11-24 00:17:30,820 INFO L226 Difference]: Without dead ends: 226 [2024-11-24 00:17:30,821 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:17:30,822 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 200 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:17:30,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 271 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 00:17:30,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-11-24 00:17:30,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 193. [2024-11-24 00:17:30,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 154 states have (on average 1.2857142857142858) internal successors, (198), 154 states have internal predecessors, (198), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-24 00:17:30,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 270 transitions. [2024-11-24 00:17:30,896 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 270 transitions. Word has length 129 [2024-11-24 00:17:30,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:17:30,897 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 270 transitions. [2024-11-24 00:17:30,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-24 00:17:30,897 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 270 transitions. [2024-11-24 00:17:30,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-24 00:17:30,904 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:30,904 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:30,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:17:30,904 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:30,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:30,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1156097248, now seen corresponding path program 1 times [2024-11-24 00:17:30,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:30,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477717034] [2024-11-24 00:17:30,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:30,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:33,938 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-24 00:17:33,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:33,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477717034] [2024-11-24 00:17:33,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477717034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:33,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:33,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-24 00:17:33,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664927236] [2024-11-24 00:17:33,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:33,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 00:17:33,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:33,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 00:17:33,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:17:33,944 INFO L87 Difference]: Start difference. First operand 193 states and 270 transitions. Second operand has 11 states, 10 states have (on average 5.0) internal successors, (50), 11 states have internal predecessors, (50), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-24 00:17:34,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:17:34,963 INFO L93 Difference]: Finished difference Result 511 states and 714 transitions. [2024-11-24 00:17:34,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 00:17:34,964 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.0) internal successors, (50), 11 states have internal predecessors, (50), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 137 [2024-11-24 00:17:34,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:17:34,967 INFO L225 Difference]: With dead ends: 511 [2024-11-24 00:17:34,967 INFO L226 Difference]: Without dead ends: 321 [2024-11-24 00:17:34,969 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-11-24 00:17:34,970 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 74 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:17:34,970 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 869 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 00:17:34,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-11-24 00:17:35,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 317. [2024-11-24 00:17:35,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 268 states have (on average 1.3171641791044777) internal successors, (353), 270 states have internal predecessors, (353), 44 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-24 00:17:35,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 441 transitions. [2024-11-24 00:17:35,015 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 441 transitions. Word has length 137 [2024-11-24 00:17:35,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:17:35,017 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 441 transitions. [2024-11-24 00:17:35,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.0) internal successors, (50), 11 states have internal predecessors, (50), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-24 00:17:35,018 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 441 transitions. [2024-11-24 00:17:35,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-24 00:17:35,024 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:35,024 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:35,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:17:35,024 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:35,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:35,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1038102055, now seen corresponding path program 1 times [2024-11-24 00:17:35,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:35,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256855901] [2024-11-24 00:17:35,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:35,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:38,454 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-24 00:17:38,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:38,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256855901] [2024-11-24 00:17:38,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256855901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:38,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:38,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-24 00:17:38,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173693631] [2024-11-24 00:17:38,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:38,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 00:17:38,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:38,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 00:17:38,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:17:38,458 INFO L87 Difference]: Start difference. First operand 317 states and 441 transitions. Second operand has 12 states, 9 states have (on average 5.777777777777778) internal successors, (52), 12 states have internal predecessors, (52), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-24 00:17:40,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:17:40,251 INFO L93 Difference]: Finished difference Result 683 states and 951 transitions. [2024-11-24 00:17:40,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 00:17:40,252 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 5.777777777777778) internal successors, (52), 12 states have internal predecessors, (52), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) Word has length 139 [2024-11-24 00:17:40,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:17:40,257 INFO L225 Difference]: With dead ends: 683 [2024-11-24 00:17:40,257 INFO L226 Difference]: Without dead ends: 369 [2024-11-24 00:17:40,258 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2024-11-24 00:17:40,259 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 64 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:17:40,261 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 1085 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-24 00:17:40,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2024-11-24 00:17:40,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 332. [2024-11-24 00:17:40,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 283 states have (on average 1.325088339222615) internal successors, (375), 285 states have internal predecessors, (375), 44 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-24 00:17:40,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 463 transitions. [2024-11-24 00:17:40,319 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 463 transitions. Word has length 139 [2024-11-24 00:17:40,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:17:40,319 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 463 transitions. [2024-11-24 00:17:40,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 5.777777777777778) internal successors, (52), 12 states have internal predecessors, (52), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-24 00:17:40,320 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 463 transitions. [2024-11-24 00:17:40,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-24 00:17:40,324 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:40,324 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:40,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:17:40,324 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:40,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:40,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1341832277, now seen corresponding path program 1 times [2024-11-24 00:17:40,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:40,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679361481] [2024-11-24 00:17:40,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:40,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:40,557 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2024-11-24 00:17:40,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:40,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679361481] [2024-11-24 00:17:40,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679361481] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:17:40,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256473638] [2024-11-24 00:17:40,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:40,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:17:40,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3023b826-b61a-43c3-a6c2-a18dec9f1f45/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:17:40,560 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3023b826-b61a-43c3-a6c2-a18dec9f1f45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:17:40,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3023b826-b61a-43c3-a6c2-a18dec9f1f45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:17:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:40,741 INFO L256 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:17:40,746 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:17:40,795 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-24 00:17:40,795 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:17:40,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256473638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:40,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:17:40,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2024-11-24 00:17:40,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064841988] [2024-11-24 00:17:40,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:40,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:17:40,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:40,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:17:40,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:17:40,797 INFO L87 Difference]: Start difference. First operand 332 states and 463 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-24 00:17:40,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:17:40,856 INFO L93 Difference]: Finished difference Result 673 states and 939 transitions. [2024-11-24 00:17:40,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:17:40,857 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 139 [2024-11-24 00:17:40,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:17:40,861 INFO L225 Difference]: With dead ends: 673 [2024-11-24 00:17:40,862 INFO L226 Difference]: Without dead ends: 344 [2024-11-24 00:17:40,863 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:17:40,865 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 0 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:17:40,868 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 500 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:17:40,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-11-24 00:17:40,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2024-11-24 00:17:40,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 295 states have (on average 1.311864406779661) internal successors, (387), 297 states have internal predecessors, (387), 44 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-24 00:17:40,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 475 transitions. [2024-11-24 00:17:40,902 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 475 transitions. Word has length 139 [2024-11-24 00:17:40,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:17:40,902 INFO L471 AbstractCegarLoop]: Abstraction has 344 states and 475 transitions. [2024-11-24 00:17:40,903 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-24 00:17:40,903 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 475 transitions. [2024-11-24 00:17:40,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-24 00:17:40,905 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:40,905 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:40,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3023b826-b61a-43c3-a6c2-a18dec9f1f45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 00:17:41,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3023b826-b61a-43c3-a6c2-a18dec9f1f45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:17:41,106 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:41,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:41,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1179497433, now seen corresponding path program 1 times [2024-11-24 00:17:41,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:41,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542152575] [2024-11-24 00:17:41,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:41,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:41,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:45,227 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-24 00:17:45,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:45,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542152575] [2024-11-24 00:17:45,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542152575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:45,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:45,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-24 00:17:45,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609902016] [2024-11-24 00:17:45,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:45,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-24 00:17:45,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:45,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-24 00:17:45,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2024-11-24 00:17:45,231 INFO L87 Difference]: Start difference. First operand 344 states and 475 transitions. Second operand has 16 states, 13 states have (on average 4.0) internal successors, (52), 16 states have internal predecessors, (52), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-24 00:17:48,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:17:48,683 INFO L93 Difference]: Finished difference Result 769 states and 1058 transitions. [2024-11-24 00:17:48,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 00:17:48,684 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 4.0) internal successors, (52), 16 states have internal predecessors, (52), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) Word has length 139 [2024-11-24 00:17:48,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:17:48,688 INFO L225 Difference]: With dead ends: 769 [2024-11-24 00:17:48,688 INFO L226 Difference]: Without dead ends: 428 [2024-11-24 00:17:48,689 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2024-11-24 00:17:48,690 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 194 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-24 00:17:48,691 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 1051 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-24 00:17:48,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2024-11-24 00:17:48,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 366. [2024-11-24 00:17:48,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 317 states have (on average 1.3186119873817035) internal successors, (418), 319 states have internal predecessors, (418), 44 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-24 00:17:48,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 506 transitions. [2024-11-24 00:17:48,743 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 506 transitions. Word has length 139 [2024-11-24 00:17:48,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:17:48,744 INFO L471 AbstractCegarLoop]: Abstraction has 366 states and 506 transitions. [2024-11-24 00:17:48,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 4.0) internal successors, (52), 16 states have internal predecessors, (52), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-24 00:17:48,744 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 506 transitions. [2024-11-24 00:17:48,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-24 00:17:48,746 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:48,747 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:48,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 00:17:48,747 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:48,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:48,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1871530343, now seen corresponding path program 1 times [2024-11-24 00:17:48,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:48,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603758872] [2024-11-24 00:17:48,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:48,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:51,476 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-24 00:17:51,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:51,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603758872] [2024-11-24 00:17:51,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603758872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:51,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:51,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-24 00:17:51,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761007548] [2024-11-24 00:17:51,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:51,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 00:17:51,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:51,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 00:17:51,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:17:51,481 INFO L87 Difference]: Start difference. First operand 366 states and 506 transitions. Second operand has 12 states, 9 states have (on average 5.888888888888889) internal successors, (53), 12 states have internal predecessors, (53), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-24 00:17:52,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:17:52,617 INFO L93 Difference]: Finished difference Result 723 states and 1000 transitions. [2024-11-24 00:17:52,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 00:17:52,618 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 5.888888888888889) internal successors, (53), 12 states have internal predecessors, (53), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) Word has length 140 [2024-11-24 00:17:52,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:17:52,624 INFO L225 Difference]: With dead ends: 723 [2024-11-24 00:17:52,624 INFO L226 Difference]: Without dead ends: 360 [2024-11-24 00:17:52,626 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-11-24 00:17:52,627 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 54 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-24 00:17:52,627 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 857 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-24 00:17:52,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-11-24 00:17:52,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 334. [2024-11-24 00:17:52,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 285 states have (on average 1.3087719298245615) internal successors, (373), 287 states have internal predecessors, (373), 44 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-24 00:17:52,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 461 transitions. [2024-11-24 00:17:52,666 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 461 transitions. Word has length 140 [2024-11-24 00:17:52,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:17:52,667 INFO L471 AbstractCegarLoop]: Abstraction has 334 states and 461 transitions. [2024-11-24 00:17:52,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 5.888888888888889) internal successors, (53), 12 states have internal predecessors, (53), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-24 00:17:52,667 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 461 transitions. [2024-11-24 00:17:52,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-24 00:17:52,669 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:52,669 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:52,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 00:17:52,670 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:52,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:52,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1382909586, now seen corresponding path program 1 times [2024-11-24 00:17:52,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:52,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613793375] [2024-11-24 00:17:52,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:52,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:54,703 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-24 00:17:54,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:54,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613793375] [2024-11-24 00:17:54,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613793375] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:54,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:54,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-24 00:17:54,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148172238] [2024-11-24 00:17:54,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:54,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-24 00:17:54,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:54,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-24 00:17:54,705 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2024-11-24 00:17:54,705 INFO L87 Difference]: Start difference. First operand 334 states and 461 transitions. Second operand has 15 states, 13 states have (on average 4.153846153846154) internal successors, (54), 15 states have internal predecessors, (54), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-24 00:17:56,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:17:56,073 INFO L93 Difference]: Finished difference Result 701 states and 964 transitions. [2024-11-24 00:17:56,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 00:17:56,074 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.153846153846154) internal successors, (54), 15 states have internal predecessors, (54), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) Word has length 141 [2024-11-24 00:17:56,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:17:56,078 INFO L225 Difference]: With dead ends: 701 [2024-11-24 00:17:56,079 INFO L226 Difference]: Without dead ends: 370 [2024-11-24 00:17:56,080 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2024-11-24 00:17:56,082 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 52 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:17:56,083 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 1475 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-24 00:17:56,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2024-11-24 00:17:56,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 337. [2024-11-24 00:17:56,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 288 states have (on average 1.3020833333333333) internal successors, (375), 290 states have internal predecessors, (375), 44 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-24 00:17:56,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 463 transitions. [2024-11-24 00:17:56,138 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 463 transitions. Word has length 141 [2024-11-24 00:17:56,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:17:56,139 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 463 transitions. [2024-11-24 00:17:56,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.153846153846154) internal successors, (54), 15 states have internal predecessors, (54), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-24 00:17:56,139 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 463 transitions. [2024-11-24 00:17:56,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-24 00:17:56,141 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:56,141 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:56,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 00:17:56,141 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:56,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:56,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1360707120, now seen corresponding path program 1 times [2024-11-24 00:17:56,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:56,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721936087] [2024-11-24 00:17:56,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:56,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:59,037 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-24 00:17:59,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:59,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721936087] [2024-11-24 00:17:59,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721936087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:59,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:59,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-24 00:17:59,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469641570] [2024-11-24 00:17:59,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:59,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-24 00:17:59,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:59,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-24 00:17:59,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-11-24 00:17:59,040 INFO L87 Difference]: Start difference. First operand 337 states and 463 transitions. Second operand has 14 states, 10 states have (on average 5.4) internal successors, (54), 14 states have internal predecessors, (54), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-24 00:18:00,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:00,688 INFO L93 Difference]: Finished difference Result 962 states and 1311 transitions. [2024-11-24 00:18:00,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-24 00:18:00,689 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 5.4) internal successors, (54), 14 states have internal predecessors, (54), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) Word has length 141 [2024-11-24 00:18:00,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:00,694 INFO L225 Difference]: With dead ends: 962 [2024-11-24 00:18:00,694 INFO L226 Difference]: Without dead ends: 628 [2024-11-24 00:18:00,696 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2024-11-24 00:18:00,696 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 163 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:00,697 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 594 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-24 00:18:00,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2024-11-24 00:18:00,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 605. [2024-11-24 00:18:00,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 502 states have (on average 1.2768924302788844) internal successors, (641), 507 states have internal predecessors, (641), 92 states have call successors, (92), 10 states have call predecessors, (92), 10 states have return successors, (92), 87 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-24 00:18:00,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 825 transitions. [2024-11-24 00:18:00,765 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 825 transitions. Word has length 141 [2024-11-24 00:18:00,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:00,765 INFO L471 AbstractCegarLoop]: Abstraction has 605 states and 825 transitions. [2024-11-24 00:18:00,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 5.4) internal successors, (54), 14 states have internal predecessors, (54), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-24 00:18:00,766 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 825 transitions. [2024-11-24 00:18:00,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-24 00:18:00,769 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:00,769 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:00,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 00:18:00,769 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:00,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:00,770 INFO L85 PathProgramCache]: Analyzing trace with hash -2043398769, now seen corresponding path program 1 times [2024-11-24 00:18:00,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:00,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729774216] [2024-11-24 00:18:00,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:00,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:00,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:03,861 WARN L286 SmtUtils]: Spent 6.99s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-24 00:28:16,251 WARN L286 SmtUtils]: Spent 7.69s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-24 00:28:31,275 WARN L286 SmtUtils]: Spent 7.57s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-24 00:28:45,426 WARN L286 SmtUtils]: Spent 5.40s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-24 00:28:57,988 WARN L286 SmtUtils]: Spent 5.82s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-24 00:29:08,017 WARN L286 SmtUtils]: Spent 5.21s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)