./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6d3526-8d0d-4bf1-bbd0-dd36ab1b6688/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6d3526-8d0d-4bf1-bbd0-dd36ab1b6688/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6d3526-8d0d-4bf1-bbd0-dd36ab1b6688/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6d3526-8d0d-4bf1-bbd0-dd36ab1b6688/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6d3526-8d0d-4bf1-bbd0-dd36ab1b6688/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6d3526-8d0d-4bf1-bbd0-dd36ab1b6688/bin/uautomizer-verify-4GaUIPS5ZU --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 ee90c95792b81649f087e170ece38fbab8d5281ca8435570782565b7b775a87f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:03:25,080 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:03:25,172 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6d3526-8d0d-4bf1-bbd0-dd36ab1b6688/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:03:25,179 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:03:25,181 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:03:25,205 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:03:25,206 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:03:25,207 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:03:25,208 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:03:25,210 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:03:25,210 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:03:25,211 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:03:25,211 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:03:25,212 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:03:25,212 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:03:25,212 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:03:25,213 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:03:25,213 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:03:25,217 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:03:25,217 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:03:25,217 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:03:25,221 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:03:25,222 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:03:25,222 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:03:25,222 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:03:25,223 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:03:25,223 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:03:25,223 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:03:25,223 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:03:25,224 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:03:25,224 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:03:25,224 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:03:25,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:03:25,226 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:03:25,227 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:03:25,227 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:03:25,227 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:03:25,227 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:03:25,228 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:03:25,229 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:03:25,229 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:03:25,230 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:03:25,230 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6d3526-8d0d-4bf1-bbd0-dd36ab1b6688/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6d3526-8d0d-4bf1-bbd0-dd36ab1b6688/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee90c95792b81649f087e170ece38fbab8d5281ca8435570782565b7b775a87f [2024-10-31 22:03:25,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:03:25,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:03:25,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:03:25,572 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:03:25,573 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:03:25,574 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6d3526-8d0d-4bf1-bbd0-dd36ab1b6688/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test4-1.i Unable to find full path for "g++" [2024-10-31 22:03:27,665 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:03:28,148 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:03:28,149 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6d3526-8d0d-4bf1-bbd0-dd36ab1b6688/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test4-1.i [2024-10-31 22:03:28,178 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6d3526-8d0d-4bf1-bbd0-dd36ab1b6688/bin/uautomizer-verify-4GaUIPS5ZU/data/86222759a/1df7958f4e7e443da620e09ad817fd86/FLAG6ca0e3607 [2024-10-31 22:03:28,195 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6d3526-8d0d-4bf1-bbd0-dd36ab1b6688/bin/uautomizer-verify-4GaUIPS5ZU/data/86222759a/1df7958f4e7e443da620e09ad817fd86 [2024-10-31 22:03:28,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:03:28,199 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:03:28,201 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:03:28,201 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:03:28,208 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:03:28,209 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:03:28" (1/1) ... [2024-10-31 22:03:28,211 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194f402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:28, skipping insertion in model container [2024-10-31 22:03:28,211 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:03:28" (1/1) ... [2024-10-31 22:03:28,286 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:03:28,846 WARN L251 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_0d6d3526-8d0d-4bf1-bbd0-dd36ab1b6688/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test4-1.i[33519,33532] [2024-10-31 22:03:29,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:03:29,029 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:03:29,102 WARN L251 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_0d6d3526-8d0d-4bf1-bbd0-dd36ab1b6688/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test4-1.i[33519,33532] [2024-10-31 22:03:29,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:03:29,270 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:03:29,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:29 WrapperNode [2024-10-31 22:03:29,275 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:03:29,276 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:03:29,276 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:03:29,277 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:03:29,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:29" (1/1) ... [2024-10-31 22:03:29,352 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:29" (1/1) ... [2024-10-31 22:03:29,479 INFO L138 Inliner]: procedures = 176, calls = 325, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1549 [2024-10-31 22:03:29,480 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:03:29,481 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:03:29,481 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:03:29,481 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:03:29,495 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:29" (1/1) ... [2024-10-31 22:03:29,495 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:29" (1/1) ... [2024-10-31 22:03:29,507 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:29" (1/1) ... [2024-10-31 22:03:29,679 INFO L175 MemorySlicer]: Split 309 memory accesses to 2 slices as follows [2, 307]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 82 writes are split as follows [0, 82]. [2024-10-31 22:03:29,682 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:29" (1/1) ... [2024-10-31 22:03:29,682 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:29" (1/1) ... [2024-10-31 22:03:29,796 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:29" (1/1) ... [2024-10-31 22:03:29,819 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:29" (1/1) ... [2024-10-31 22:03:29,828 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:29" (1/1) ... [2024-10-31 22:03:29,841 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:29" (1/1) ... [2024-10-31 22:03:29,852 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:03:29,853 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:03:29,853 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:03:29,853 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:03:29,854 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:29" (1/1) ... [2024-10-31 22:03:29,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:03:29,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6d3526-8d0d-4bf1-bbd0-dd36ab1b6688/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:03:29,906 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6d3526-8d0d-4bf1-bbd0-dd36ab1b6688/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:03:29,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6d3526-8d0d-4bf1-bbd0-dd36ab1b6688/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:03:29,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:03:29,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:03:29,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:03:29,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:03:29,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-10-31 22:03:29,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-10-31 22:03:29,941 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-10-31 22:03:29,942 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-10-31 22:03:29,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-31 22:03:29,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:03:29,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-31 22:03:29,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-31 22:03:29,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-31 22:03:29,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-31 22:03:29,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:03:29,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:03:29,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:03:29,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:03:29,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:03:30,246 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:03:30,248 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:03:32,400 INFO L? ?]: Removed 377 outVars from TransFormulas that were not future-live. [2024-10-31 22:03:32,401 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:03:32,422 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:03:32,422 INFO L316 CfgBuilder]: Removed 60 assume(true) statements. [2024-10-31 22:03:32,423 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:03:32 BoogieIcfgContainer [2024-10-31 22:03:32,423 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:03:32,425 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:03:32,425 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:03:32,433 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:03:32,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:03:28" (1/3) ... [2024-10-31 22:03:32,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df4fbf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:03:32, skipping insertion in model container [2024-10-31 22:03:32,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:29" (2/3) ... [2024-10-31 22:03:32,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df4fbf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:03:32, skipping insertion in model container [2024-10-31 22:03:32,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:03:32" (3/3) ... [2024-10-31 22:03:32,438 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_nondet_test4-1.i [2024-10-31 22:03:32,459 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:03:32,459 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:03:32,555 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:03:32,565 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;@56c23e42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:03:32,565 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 22:03:32,573 INFO L276 IsEmpty]: Start isEmpty. Operand has 404 states, 395 states have (on average 1.6126582278481012) internal successors, (637), 396 states have internal predecessors, (637), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-31 22:03:32,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-31 22:03:32,587 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:32,588 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:32,588 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:03:32,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:32,596 INFO L85 PathProgramCache]: Analyzing trace with hash -639633962, now seen corresponding path program 1 times [2024-10-31 22:03:32,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:32,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584126155] [2024-10-31 22:03:32,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:32,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:33,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:33,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:33,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584126155] [2024-10-31 22:03:33,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584126155] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:33,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:33,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:03:33,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139012979] [2024-10-31 22:03:33,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:33,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:03:33,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:33,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:03:33,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:03:33,055 INFO L87 Difference]: Start difference. First operand has 404 states, 395 states have (on average 1.6126582278481012) internal successors, (637), 396 states have internal predecessors, (637), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:33,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:03:33,766 INFO L93 Difference]: Finished difference Result 1128 states and 1819 transitions. [2024-10-31 22:03:33,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:03:33,770 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-10-31 22:03:33,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:03:33,795 INFO L225 Difference]: With dead ends: 1128 [2024-10-31 22:03:33,795 INFO L226 Difference]: Without dead ends: 720 [2024-10-31 22:03:33,800 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:03:33,806 INFO L432 NwaCegarLoop]: 578 mSDtfsCounter, 467 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-31 22:03:33,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 1661 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-31 22:03:33,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2024-10-31 22:03:33,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 720. [2024-10-31 22:03:33,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 709 states have (on average 1.4541607898448519) internal successors, (1031), 709 states have internal predecessors, (1031), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-31 22:03:33,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1049 transitions. [2024-10-31 22:03:33,928 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1049 transitions. Word has length 10 [2024-10-31 22:03:33,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:03:33,929 INFO L471 AbstractCegarLoop]: Abstraction has 720 states and 1049 transitions. [2024-10-31 22:03:33,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:33,930 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1049 transitions. [2024-10-31 22:03:33,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-31 22:03:33,943 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:33,943 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:33,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:03:33,944 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:03:33,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:33,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1430695505, now seen corresponding path program 1 times [2024-10-31 22:03:33,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:33,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207880530] [2024-10-31 22:03:33,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:33,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:34,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:34,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-31 22:03:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:34,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-10-31 22:03:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:34,831 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 22:03:34,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:34,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207880530] [2024-10-31 22:03:34,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207880530] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:34,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:34,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:03:34,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506651706] [2024-10-31 22:03:34,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:34,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:03:34,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:34,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:03:34,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:03:34,837 INFO L87 Difference]: Start difference. First operand 720 states and 1049 transitions. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-31 22:03:35,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:03:35,581 INFO L93 Difference]: Finished difference Result 1389 states and 2027 transitions. [2024-10-31 22:03:35,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:03:35,582 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 171 [2024-10-31 22:03:35,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:03:35,588 INFO L225 Difference]: With dead ends: 1389 [2024-10-31 22:03:35,588 INFO L226 Difference]: Without dead ends: 729 [2024-10-31 22:03:35,595 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:03:35,596 INFO L432 NwaCegarLoop]: 547 mSDtfsCounter, 108 mSDsluCounter, 1449 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1996 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-31 22:03:35,596 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 1996 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-31 22:03:35,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2024-10-31 22:03:35,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 720. [2024-10-31 22:03:35,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 709 states have (on average 1.4344146685472496) internal successors, (1017), 709 states have internal predecessors, (1017), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-31 22:03:35,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1035 transitions. [2024-10-31 22:03:35,655 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1035 transitions. Word has length 171 [2024-10-31 22:03:35,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:03:35,656 INFO L471 AbstractCegarLoop]: Abstraction has 720 states and 1035 transitions. [2024-10-31 22:03:35,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-31 22:03:35,656 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1035 transitions. [2024-10-31 22:03:35,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-31 22:03:35,661 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:35,662 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:35,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:03:35,662 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:03:35,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:35,663 INFO L85 PathProgramCache]: Analyzing trace with hash -21705053, now seen corresponding path program 1 times [2024-10-31 22:03:35,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:35,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87935309] [2024-10-31 22:03:35,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:35,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:35,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:36,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-31 22:03:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:36,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-10-31 22:03:36,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:36,183 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 22:03:36,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:36,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87935309] [2024-10-31 22:03:36,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87935309] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:36,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:36,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:03:36,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273804257] [2024-10-31 22:03:36,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:36,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:03:36,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:36,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:03:36,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:03:36,192 INFO L87 Difference]: Start difference. First operand 720 states and 1035 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-31 22:03:36,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:03:36,739 INFO L93 Difference]: Finished difference Result 1379 states and 1994 transitions. [2024-10-31 22:03:36,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:03:36,742 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 171 [2024-10-31 22:03:36,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:03:36,749 INFO L225 Difference]: With dead ends: 1379 [2024-10-31 22:03:36,749 INFO L226 Difference]: Without dead ends: 735 [2024-10-31 22:03:36,751 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:03:36,752 INFO L432 NwaCegarLoop]: 562 mSDtfsCounter, 4 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-31 22:03:36,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1567 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-31 22:03:36,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2024-10-31 22:03:36,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 732. [2024-10-31 22:03:36,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 721 states have (on average 1.4271844660194175) internal successors, (1029), 721 states have internal predecessors, (1029), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-31 22:03:36,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1047 transitions. [2024-10-31 22:03:36,789 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1047 transitions. Word has length 171 [2024-10-31 22:03:36,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:03:36,791 INFO L471 AbstractCegarLoop]: Abstraction has 732 states and 1047 transitions. [2024-10-31 22:03:36,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-31 22:03:36,792 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1047 transitions. [2024-10-31 22:03:36,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-31 22:03:36,798 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:36,798 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:36,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:03:36,799 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:03:36,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:36,800 INFO L85 PathProgramCache]: Analyzing trace with hash 518724453, now seen corresponding path program 1 times [2024-10-31 22:03:36,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:36,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353516260] [2024-10-31 22:03:36,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:36,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:37,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-31 22:03:37,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:37,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-10-31 22:03:37,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:37,134 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 22:03:37,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:37,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353516260] [2024-10-31 22:03:37,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353516260] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:37,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:37,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:03:37,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821829944] [2024-10-31 22:03:37,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:37,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:03:37,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:37,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:03:37,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:03:37,140 INFO L87 Difference]: Start difference. First operand 732 states and 1047 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-31 22:03:37,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:03:37,580 INFO L93 Difference]: Finished difference Result 1317 states and 1894 transitions. [2024-10-31 22:03:37,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:03:37,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 171 [2024-10-31 22:03:37,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:03:37,585 INFO L225 Difference]: With dead ends: 1317 [2024-10-31 22:03:37,585 INFO L226 Difference]: Without dead ends: 733 [2024-10-31 22:03:37,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:03:37,587 INFO L432 NwaCegarLoop]: 567 mSDtfsCounter, 137 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-31 22:03:37,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 1594 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-31 22:03:37,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2024-10-31 22:03:37,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 730. [2024-10-31 22:03:37,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 719 states have (on average 1.426981919332406) internal successors, (1026), 719 states have internal predecessors, (1026), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-31 22:03:37,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 1044 transitions. [2024-10-31 22:03:37,613 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 1044 transitions. Word has length 171 [2024-10-31 22:03:37,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:03:37,614 INFO L471 AbstractCegarLoop]: Abstraction has 730 states and 1044 transitions. [2024-10-31 22:03:37,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-31 22:03:37,615 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 1044 transitions. [2024-10-31 22:03:37,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-10-31 22:03:37,617 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:37,618 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:37,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:03:37,618 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:03:37,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:37,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1195148215, now seen corresponding path program 1 times [2024-10-31 22:03:37,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:37,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834481354] [2024-10-31 22:03:37,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:37,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:38,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-31 22:03:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:38,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-31 22:03:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:38,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-10-31 22:03:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:38,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-31 22:03:38,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:38,137 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-31 22:03:38,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:38,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834481354] [2024-10-31 22:03:38,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834481354] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:38,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:38,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:03:38,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848142176] [2024-10-31 22:03:38,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:38,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:03:38,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:38,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:03:38,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:03:38,140 INFO L87 Difference]: Start difference. First operand 730 states and 1044 transitions. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-31 22:03:39,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:03:39,035 INFO L93 Difference]: Finished difference Result 1176 states and 1686 transitions. [2024-10-31 22:03:39,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:03:39,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 186 [2024-10-31 22:03:39,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:03:39,040 INFO L225 Difference]: With dead ends: 1176 [2024-10-31 22:03:39,040 INFO L226 Difference]: Without dead ends: 649 [2024-10-31 22:03:39,041 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:03:39,042 INFO L432 NwaCegarLoop]: 466 mSDtfsCounter, 33 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 1753 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-31 22:03:39,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 1753 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-31 22:03:39,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2024-10-31 22:03:39,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 646. [2024-10-31 22:03:39,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 635 states have (on average 1.373228346456693) internal successors, (872), 635 states have internal predecessors, (872), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-31 22:03:39,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 890 transitions. [2024-10-31 22:03:39,067 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 890 transitions. Word has length 186 [2024-10-31 22:03:39,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:03:39,068 INFO L471 AbstractCegarLoop]: Abstraction has 646 states and 890 transitions. [2024-10-31 22:03:39,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-31 22:03:39,069 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 890 transitions. [2024-10-31 22:03:39,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-10-31 22:03:39,071 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:39,072 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:39,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:03:39,072 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:03:39,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:39,073 INFO L85 PathProgramCache]: Analyzing trace with hash -988184509, now seen corresponding path program 1 times [2024-10-31 22:03:39,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:39,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882133747] [2024-10-31 22:03:39,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:39,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:40,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-31 22:03:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:40,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-31 22:03:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:40,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-10-31 22:03:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:40,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-31 22:03:40,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:40,846 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-31 22:03:40,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:40,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882133747] [2024-10-31 22:03:40,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882133747] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:03:40,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187815079] [2024-10-31 22:03:40,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:40,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:03:40,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6d3526-8d0d-4bf1-bbd0-dd36ab1b6688/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:03:40,853 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6d3526-8d0d-4bf1-bbd0-dd36ab1b6688/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:03:40,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6d3526-8d0d-4bf1-bbd0-dd36ab1b6688/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:03:41,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:41,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 1022 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-31 22:03:41,601 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:03:41,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2024-10-31 22:03:42,267 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-31 22:03:42,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 43 [2024-10-31 22:03:42,471 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-31 22:03:42,471 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:03:42,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187815079] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:42,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:03:42,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2024-10-31 22:03:42,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635718377] [2024-10-31 22:03:42,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:42,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 22:03:42,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:42,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 22:03:42,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:03:42,475 INFO L87 Difference]: Start difference. First operand 646 states and 890 transitions. Second operand has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 11 states have internal predecessors, (169), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-31 22:03:45,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:03:45,854 INFO L93 Difference]: Finished difference Result 1303 states and 1784 transitions. [2024-10-31 22:03:45,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-31 22:03:45,854 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 11 states have internal predecessors, (169), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 186 [2024-10-31 22:03:45,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:03:45,858 INFO L225 Difference]: With dead ends: 1303 [2024-10-31 22:03:45,858 INFO L226 Difference]: Without dead ends: 749 [2024-10-31 22:03:45,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2024-10-31 22:03:45,860 INFO L432 NwaCegarLoop]: 470 mSDtfsCounter, 723 mSDsluCounter, 2627 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 3097 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-31 22:03:45,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 3097 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-31 22:03:45,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2024-10-31 22:03:45,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 678. [2024-10-31 22:03:45,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 667 states have (on average 1.3628185907046477) internal successors, (909), 667 states have internal predecessors, (909), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-31 22:03:45,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 927 transitions. [2024-10-31 22:03:45,887 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 927 transitions. Word has length 186 [2024-10-31 22:03:45,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:03:45,887 INFO L471 AbstractCegarLoop]: Abstraction has 678 states and 927 transitions. [2024-10-31 22:03:45,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 11 states have internal predecessors, (169), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-31 22:03:45,888 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 927 transitions. [2024-10-31 22:03:45,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-10-31 22:03:45,891 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:45,891 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:45,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6d3526-8d0d-4bf1-bbd0-dd36ab1b6688/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:03:46,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6d3526-8d0d-4bf1-bbd0-dd36ab1b6688/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:03:46,092 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:03:46,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:46,093 INFO L85 PathProgramCache]: Analyzing trace with hash 415684677, now seen corresponding path program 1 times [2024-10-31 22:03:46,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:46,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349526904] [2024-10-31 22:03:46,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:46,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:46,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-31 22:03:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:46,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-31 22:03:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:46,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-10-31 22:03:46,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:46,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-31 22:03:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:46,430 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-31 22:03:46,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:46,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349526904] [2024-10-31 22:03:46,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349526904] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:46,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:46,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:03:46,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264424654] [2024-10-31 22:03:46,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:46,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:03:46,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:46,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:03:46,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:03:46,434 INFO L87 Difference]: Start difference. First operand 678 states and 927 transitions. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-31 22:03:46,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:03:46,891 INFO L93 Difference]: Finished difference Result 1187 states and 1626 transitions. [2024-10-31 22:03:46,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:03:46,892 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 186 [2024-10-31 22:03:46,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:03:46,895 INFO L225 Difference]: With dead ends: 1187 [2024-10-31 22:03:46,895 INFO L226 Difference]: Without dead ends: 541 [2024-10-31 22:03:46,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:03:46,897 INFO L432 NwaCegarLoop]: 389 mSDtfsCounter, 12 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1450 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-31 22:03:46,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1450 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-31 22:03:46,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2024-10-31 22:03:46,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 538. [2024-10-31 22:03:46,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 527 states have (on average 1.3263757115749526) internal successors, (699), 527 states have internal predecessors, (699), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-31 22:03:46,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 717 transitions. [2024-10-31 22:03:46,944 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 717 transitions. Word has length 186 [2024-10-31 22:03:46,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:03:46,945 INFO L471 AbstractCegarLoop]: Abstraction has 538 states and 717 transitions. [2024-10-31 22:03:46,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-31 22:03:46,945 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 717 transitions. [2024-10-31 22:03:46,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-10-31 22:03:46,947 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:46,947 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:46,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:03:46,948 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:03:46,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:46,949 INFO L85 PathProgramCache]: Analyzing trace with hash 854784811, now seen corresponding path program 1 times [2024-10-31 22:03:46,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:46,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781639019] [2024-10-31 22:03:46,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:46,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:48,571 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-31 22:03:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:48,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-31 22:03:48,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:48,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-10-31 22:03:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:48,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-10-31 22:03:48,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:48,630 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-31 22:03:48,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:48,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781639019] [2024-10-31 22:03:48,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781639019] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:03:48,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853725784] [2024-10-31 22:03:48,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:48,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:03:48,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6d3526-8d0d-4bf1-bbd0-dd36ab1b6688/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:03:48,633 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6d3526-8d0d-4bf1-bbd0-dd36ab1b6688/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:03:48,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6d3526-8d0d-4bf1-bbd0-dd36ab1b6688/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:03:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:49,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-31 22:03:49,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:03:49,615 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-31 22:03:49,615 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:03:49,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853725784] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:49,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:03:49,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-10-31 22:03:49,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705211940] [2024-10-31 22:03:49,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:49,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:03:49,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:49,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:03:49,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:03:49,618 INFO L87 Difference]: Start difference. First operand 538 states and 717 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-31 22:03:49,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:03:49,787 INFO L93 Difference]: Finished difference Result 1038 states and 1394 transitions. [2024-10-31 22:03:49,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:03:49,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 187 [2024-10-31 22:03:49,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:03:49,790 INFO L225 Difference]: With dead ends: 1038 [2024-10-31 22:03:49,790 INFO L226 Difference]: Without dead ends: 538 [2024-10-31 22:03:49,791 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:03:49,792 INFO L432 NwaCegarLoop]: 396 mSDtfsCounter, 13 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:03:49,792 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1063 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:03:49,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-10-31 22:03:49,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2024-10-31 22:03:49,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 527 states have (on average 1.3225806451612903) internal successors, (697), 527 states have internal predecessors, (697), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-31 22:03:49,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 715 transitions. [2024-10-31 22:03:49,812 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 715 transitions. Word has length 187 [2024-10-31 22:03:49,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:03:49,812 INFO L471 AbstractCegarLoop]: Abstraction has 538 states and 715 transitions. [2024-10-31 22:03:49,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-31 22:03:49,813 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 715 transitions. [2024-10-31 22:03:49,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-10-31 22:03:49,815 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:49,816 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:49,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6d3526-8d0d-4bf1-bbd0-dd36ab1b6688/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:03:50,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6d3526-8d0d-4bf1-bbd0-dd36ab1b6688/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:03:50,020 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:03:50,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:50,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1701840994, now seen corresponding path program 1 times [2024-10-31 22:03:50,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:50,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97408166] [2024-10-31 22:03:50,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:50,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:50,718 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-31 22:03:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:50,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-31 22:03:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:50,726 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-31 22:03:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:50,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-10-31 22:03:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:50,733 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-31 22:03:50,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:50,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97408166] [2024-10-31 22:03:50,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97408166] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:50,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:50,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:03:50,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032270037] [2024-10-31 22:03:50,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:50,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:03:50,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:50,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:03:50,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:03:50,737 INFO L87 Difference]: Start difference. First operand 538 states and 715 transitions. Second operand has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 6 states have internal predecessors, (171), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-31 22:03:51,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:03:51,528 INFO L93 Difference]: Finished difference Result 1044 states and 1408 transitions. [2024-10-31 22:03:51,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:03:51,529 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 6 states have internal predecessors, (171), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 188 [2024-10-31 22:03:51,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:03:51,532 INFO L225 Difference]: With dead ends: 1044 [2024-10-31 22:03:51,532 INFO L226 Difference]: Without dead ends: 547 [2024-10-31 22:03:51,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:03:51,534 INFO L432 NwaCegarLoop]: 394 mSDtfsCounter, 7 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1981 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-31 22:03:51,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1981 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-31 22:03:51,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2024-10-31 22:03:51,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 544. [2024-10-31 22:03:51,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 533 states have (on average 1.3189493433395871) internal successors, (703), 533 states have internal predecessors, (703), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-31 22:03:51,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 721 transitions. [2024-10-31 22:03:51,557 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 721 transitions. Word has length 188 [2024-10-31 22:03:51,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:03:51,557 INFO L471 AbstractCegarLoop]: Abstraction has 544 states and 721 transitions. [2024-10-31 22:03:51,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 6 states have internal predecessors, (171), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-31 22:03:51,558 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 721 transitions. [2024-10-31 22:03:51,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-10-31 22:03:51,560 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:51,560 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:51,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:03:51,560 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:03:51,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:51,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1654246724, now seen corresponding path program 1 times [2024-10-31 22:03:51,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:51,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188021289] [2024-10-31 22:03:51,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:51,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:52,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-31 22:03:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:52,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-31 22:03:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:52,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-10-31 22:03:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:52,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-10-31 22:03:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:52,229 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-31 22:03:52,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:52,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188021289] [2024-10-31 22:03:52,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188021289] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:52,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:52,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 22:03:52,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993573347] [2024-10-31 22:03:52,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:52,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:03:52,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:52,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:03:52,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:03:52,232 INFO L87 Difference]: Start difference. First operand 544 states and 721 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 7 states have internal predecessors, (172), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-31 22:03:53,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:03:53,202 INFO L93 Difference]: Finished difference Result 1050 states and 1412 transitions. [2024-10-31 22:03:53,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:03:53,203 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 7 states have internal predecessors, (172), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 189 [2024-10-31 22:03:53,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:03:53,205 INFO L225 Difference]: With dead ends: 1050 [2024-10-31 22:03:53,206 INFO L226 Difference]: Without dead ends: 557 [2024-10-31 22:03:53,207 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:03:53,208 INFO L432 NwaCegarLoop]: 384 mSDtfsCounter, 11 mSDsluCounter, 1897 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2281 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-31 22:03:53,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2281 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-31 22:03:53,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2024-10-31 22:03:53,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 552. [2024-10-31 22:03:53,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 541 states have (on average 1.3179297597042514) internal successors, (713), 541 states have internal predecessors, (713), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-31 22:03:53,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 731 transitions. [2024-10-31 22:03:53,230 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 731 transitions. Word has length 189 [2024-10-31 22:03:53,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:03:53,230 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 731 transitions. [2024-10-31 22:03:53,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 7 states have internal predecessors, (172), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-31 22:03:53,231 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 731 transitions. [2024-10-31 22:03:53,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-10-31 22:03:53,233 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:53,233 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:53,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 22:03:53,234 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:03:53,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:53,234 INFO L85 PathProgramCache]: Analyzing trace with hash -806328792, now seen corresponding path program 1 times [2024-10-31 22:03:53,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:53,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902667565] [2024-10-31 22:03:53,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:53,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:54,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-31 22:03:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat