./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-27.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32a6a18-727e-43ac-8397-eb8304a688db/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32a6a18-727e-43ac-8397-eb8304a688db/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32a6a18-727e-43ac-8397-eb8304a688db/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32a6a18-727e-43ac-8397-eb8304a688db/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-27.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32a6a18-727e-43ac-8397-eb8304a688db/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32a6a18-727e-43ac-8397-eb8304a688db/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ab65447cc97ed4f251e6c4b0afc78d9d0c0d28068c3e23c2f6f7c53903035da5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 18:32:01,701 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 18:32:01,796 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32a6a18-727e-43ac-8397-eb8304a688db/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 18:32:01,804 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 18:32:01,807 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 18:32:01,837 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 18:32:01,838 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 18:32:01,838 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 18:32:01,839 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 18:32:01,839 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 18:32:01,839 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 18:32:01,839 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 18:32:01,839 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 18:32:01,840 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 18:32:01,840 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 18:32:01,840 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 18:32:01,841 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 18:32:01,841 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 18:32:01,841 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 18:32:01,841 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 18:32:01,842 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 18:32:01,842 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 18:32:01,842 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 18:32:01,842 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 18:32:01,842 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 18:32:01,842 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 18:32:01,842 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 18:32:01,843 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 18:32:01,843 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 18:32:01,843 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:32:01,843 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:32:01,844 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:32:01,844 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:32:01,844 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 18:32:01,845 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:32:01,845 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:32:01,845 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:32:01,845 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:32:01,845 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 18:32:01,845 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 18:32:01,845 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 18:32:01,846 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 18:32:01,846 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 18:32:01,846 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 18:32:01,846 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 18:32:01,846 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 18:32:01,846 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 18:32:01,846 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 18:32:01,846 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32a6a18-727e-43ac-8397-eb8304a688db/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ab65447cc97ed4f251e6c4b0afc78d9d0c0d28068c3e23c2f6f7c53903035da5 [2024-11-23 18:32:02,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 18:32:02,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 18:32:02,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 18:32:02,193 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 18:32:02,193 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 18:32:02,194 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32a6a18-727e-43ac-8397-eb8304a688db/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-27.i [2024-11-23 18:32:05,083 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32a6a18-727e-43ac-8397-eb8304a688db/bin/uautomizer-verify-LYvppIcaGC/data/6cce0fa76/fbf5a0411c46451d8965880ebacb7702/FLAGc105823fd [2024-11-23 18:32:05,378 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 18:32:05,379 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32a6a18-727e-43ac-8397-eb8304a688db/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-27.i [2024-11-23 18:32:05,388 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32a6a18-727e-43ac-8397-eb8304a688db/bin/uautomizer-verify-LYvppIcaGC/data/6cce0fa76/fbf5a0411c46451d8965880ebacb7702/FLAGc105823fd [2024-11-23 18:32:05,402 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32a6a18-727e-43ac-8397-eb8304a688db/bin/uautomizer-verify-LYvppIcaGC/data/6cce0fa76/fbf5a0411c46451d8965880ebacb7702 [2024-11-23 18:32:05,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 18:32:05,406 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 18:32:05,408 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 18:32:05,408 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 18:32:05,412 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 18:32:05,413 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:32:05" (1/1) ... [2024-11-23 18:32:05,414 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1062051d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:32:05, skipping insertion in model container [2024-11-23 18:32:05,414 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:32:05" (1/1) ... [2024-11-23 18:32:05,433 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 18:32:05,588 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32a6a18-727e-43ac-8397-eb8304a688db/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-27.i[916,929] [2024-11-23 18:32:05,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:32:05,685 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 18:32:05,697 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32a6a18-727e-43ac-8397-eb8304a688db/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-27.i[916,929] [2024-11-23 18:32:05,750 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:32:05,776 INFO L204 MainTranslator]: Completed translation [2024-11-23 18:32:05,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:32:05 WrapperNode [2024-11-23 18:32:05,778 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 18:32:05,779 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 18:32:05,779 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 18:32:05,779 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 18:32:05,786 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:32:05" (1/1) ... [2024-11-23 18:32:05,801 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:32:05" (1/1) ... [2024-11-23 18:32:05,849 INFO L138 Inliner]: procedures = 26, calls = 163, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 460 [2024-11-23 18:32:05,849 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 18:32:05,850 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 18:32:05,850 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 18:32:05,850 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 18:32:05,863 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:32:05" (1/1) ... [2024-11-23 18:32:05,863 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:32:05" (1/1) ... [2024-11-23 18:32:05,872 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:32:05" (1/1) ... [2024-11-23 18:32:05,908 INFO L175 MemorySlicer]: Split 123 memory accesses to 13 slices as follows [2, 9, 6, 18, 18, 12, 7, 10, 6, 10, 7, 7, 11]. 15 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]. The 16 writes are split as follows [0, 2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 3, 1]. [2024-11-23 18:32:05,912 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:32:05" (1/1) ... [2024-11-23 18:32:05,912 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:32:05" (1/1) ... [2024-11-23 18:32:05,930 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:32:05" (1/1) ... [2024-11-23 18:32:05,934 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:32:05" (1/1) ... [2024-11-23 18:32:05,942 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:32:05" (1/1) ... [2024-11-23 18:32:05,948 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:32:05" (1/1) ... [2024-11-23 18:32:05,954 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:32:05" (1/1) ... [2024-11-23 18:32:05,962 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 18:32:05,963 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 18:32:05,963 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 18:32:05,964 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 18:32:05,965 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:32:05" (1/1) ... [2024-11-23 18:32:05,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:32:05,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32a6a18-727e-43ac-8397-eb8304a688db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:32:06,000 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32a6a18-727e-43ac-8397-eb8304a688db/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 18:32:06,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32a6a18-727e-43ac-8397-eb8304a688db/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 18:32:06,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 18:32:06,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 18:32:06,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 18:32:06,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 18:32:06,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-23 18:32:06,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-23 18:32:06,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-23 18:32:06,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-23 18:32:06,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-23 18:32:06,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-23 18:32:06,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-23 18:32:06,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-23 18:32:06,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-23 18:32:06,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-23 18:32:06,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 18:32:06,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 18:32:06,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-23 18:32:06,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-23 18:32:06,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-23 18:32:06,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-23 18:32:06,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-23 18:32:06,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-23 18:32:06,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-23 18:32:06,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-23 18:32:06,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-23 18:32:06,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-23 18:32:06,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-23 18:32:06,031 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 18:32:06,031 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 18:32:06,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 18:32:06,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 18:32:06,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 18:32:06,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 18:32:06,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-23 18:32:06,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-23 18:32:06,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-23 18:32:06,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-23 18:32:06,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-23 18:32:06,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-23 18:32:06,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-23 18:32:06,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-23 18:32:06,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-23 18:32:06,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 18:32:06,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 18:32:06,228 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 18:32:06,231 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 18:32:06,759 INFO L? ?]: Removed 110 outVars from TransFormulas that were not future-live. [2024-11-23 18:32:06,759 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 18:32:06,776 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 18:32:06,776 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 18:32:06,778 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:32:06 BoogieIcfgContainer [2024-11-23 18:32:06,779 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 18:32:06,781 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 18:32:06,781 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 18:32:06,787 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 18:32:06,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:32:05" (1/3) ... [2024-11-23 18:32:06,787 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c496929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:32:06, skipping insertion in model container [2024-11-23 18:32:06,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:32:05" (2/3) ... [2024-11-23 18:32:06,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c496929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:32:06, skipping insertion in model container [2024-11-23 18:32:06,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:32:06" (3/3) ... [2024-11-23 18:32:06,790 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-27.i [2024-11-23 18:32:06,833 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 18:32:06,835 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-p_file-27.i that has 2 procedures, 94 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 18:32:06,906 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 18:32:06,923 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;@37f6a968, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 18:32:06,923 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 18:32:06,928 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 74 states have (on average 1.3783783783783783) internal successors, (102), 75 states have internal predecessors, (102), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-23 18:32:06,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-23 18:32:06,942 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:06,943 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:06,943 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:06,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:06,950 INFO L85 PathProgramCache]: Analyzing trace with hash -599042020, now seen corresponding path program 1 times [2024-11-23 18:32:06,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:06,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717044446] [2024-11-23 18:32:06,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:06,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:07,301 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2024-11-23 18:32:07,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:07,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717044446] [2024-11-23 18:32:07,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717044446] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:32:07,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754763511] [2024-11-23 18:32:07,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:07,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:32:07,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32a6a18-727e-43ac-8397-eb8304a688db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:32:07,314 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32a6a18-727e-43ac-8397-eb8304a688db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:32:07,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32a6a18-727e-43ac-8397-eb8304a688db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 18:32:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:07,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 18:32:07,671 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:32:07,711 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2024-11-23 18:32:07,711 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:32:07,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754763511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:07,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:32:07,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 18:32:07,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380018933] [2024-11-23 18:32:07,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:07,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 18:32:07,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:07,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 18:32:07,742 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 18:32:07,744 INFO L87 Difference]: Start difference. First operand has 94 states, 74 states have (on average 1.3783783783783783) internal successors, (102), 75 states have internal predecessors, (102), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-23 18:32:07,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:07,787 INFO L93 Difference]: Finished difference Result 181 states and 283 transitions. [2024-11-23 18:32:07,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 18:32:07,791 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 131 [2024-11-23 18:32:07,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:07,800 INFO L225 Difference]: With dead ends: 181 [2024-11-23 18:32:07,800 INFO L226 Difference]: Without dead ends: 90 [2024-11-23 18:32:07,805 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 18:32:07,809 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:07,809 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:32:07,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-23 18:32:07,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2024-11-23 18:32:07,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 71 states have (on average 1.3380281690140845) internal successors, (95), 71 states have internal predecessors, (95), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-23 18:32:07,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 129 transitions. [2024-11-23 18:32:07,864 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 129 transitions. Word has length 131 [2024-11-23 18:32:07,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:07,865 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 129 transitions. [2024-11-23 18:32:07,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-23 18:32:07,865 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 129 transitions. [2024-11-23 18:32:07,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-23 18:32:07,871 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:07,871 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:07,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32a6a18-727e-43ac-8397-eb8304a688db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 18:32:08,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32a6a18-727e-43ac-8397-eb8304a688db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 18:32:08,072 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:08,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:08,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1244012870, now seen corresponding path program 1 times [2024-11-23 18:32:08,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:08,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289977684] [2024-11-23 18:32:08,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:08,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:09,483 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-23 18:32:09,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:09,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289977684] [2024-11-23 18:32:09,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289977684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:09,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:09,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 18:32:09,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024784450] [2024-11-23 18:32:09,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:09,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 18:32:09,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:09,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 18:32:09,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:32:09,490 INFO L87 Difference]: Start difference. First operand 90 states and 129 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:09,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:09,782 INFO L93 Difference]: Finished difference Result 224 states and 320 transitions. [2024-11-23 18:32:09,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 18:32:09,783 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 131 [2024-11-23 18:32:09,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:09,785 INFO L225 Difference]: With dead ends: 224 [2024-11-23 18:32:09,787 INFO L226 Difference]: Without dead ends: 137 [2024-11-23 18:32:09,787 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:32:09,788 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 58 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:09,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 511 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 18:32:09,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-23 18:32:09,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 134. [2024-11-23 18:32:09,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 112 states have (on average 1.3660714285714286) internal successors, (153), 113 states have internal predecessors, (153), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-23 18:32:09,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 191 transitions. [2024-11-23 18:32:09,818 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 191 transitions. Word has length 131 [2024-11-23 18:32:09,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:09,819 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 191 transitions. [2024-11-23 18:32:09,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:09,819 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 191 transitions. [2024-11-23 18:32:09,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-23 18:32:09,823 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:09,823 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:09,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 18:32:09,823 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:09,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:09,824 INFO L85 PathProgramCache]: Analyzing trace with hash -828522667, now seen corresponding path program 1 times [2024-11-23 18:32:09,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:09,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10589702] [2024-11-23 18:32:09,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:09,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:10,141 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-23 18:32:10,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:10,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10589702] [2024-11-23 18:32:10,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10589702] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:10,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:10,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:32:10,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812014502] [2024-11-23 18:32:10,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:10,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:32:10,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:10,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:32:10,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:32:10,143 INFO L87 Difference]: Start difference. First operand 134 states and 191 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:10,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:10,360 INFO L93 Difference]: Finished difference Result 308 states and 439 transitions. [2024-11-23 18:32:10,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 18:32:10,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 133 [2024-11-23 18:32:10,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:10,363 INFO L225 Difference]: With dead ends: 308 [2024-11-23 18:32:10,363 INFO L226 Difference]: Without dead ends: 177 [2024-11-23 18:32:10,364 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:32:10,365 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 110 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:10,365 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 730 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 18:32:10,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-23 18:32:10,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 173. [2024-11-23 18:32:10,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 135 states have (on average 1.3111111111111111) internal successors, (177), 135 states have internal predecessors, (177), 34 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-23 18:32:10,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 245 transitions. [2024-11-23 18:32:10,384 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 245 transitions. Word has length 133 [2024-11-23 18:32:10,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:10,385 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 245 transitions. [2024-11-23 18:32:10,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:10,385 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 245 transitions. [2024-11-23 18:32:10,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-23 18:32:10,387 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:10,387 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:10,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 18:32:10,388 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:10,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:10,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1503590059, now seen corresponding path program 1 times [2024-11-23 18:32:10,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:10,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597640539] [2024-11-23 18:32:10,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:10,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:10,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:10,629 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-23 18:32:10,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:10,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597640539] [2024-11-23 18:32:10,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597640539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:10,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:10,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:32:10,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861759606] [2024-11-23 18:32:10,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:10,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:32:10,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:10,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:32:10,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:32:10,633 INFO L87 Difference]: Start difference. First operand 173 states and 245 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:10,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:10,843 INFO L93 Difference]: Finished difference Result 349 states and 494 transitions. [2024-11-23 18:32:10,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 18:32:10,843 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 133 [2024-11-23 18:32:10,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:10,845 INFO L225 Difference]: With dead ends: 349 [2024-11-23 18:32:10,845 INFO L226 Difference]: Without dead ends: 179 [2024-11-23 18:32:10,849 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:32:10,850 INFO L435 NwaCegarLoop]: 166 mSDtfsCounter, 117 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:10,850 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 562 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 18:32:10,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-23 18:32:10,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 175. [2024-11-23 18:32:10,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 137 states have (on average 1.2992700729927007) internal successors, (178), 137 states have internal predecessors, (178), 34 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-23 18:32:10,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 246 transitions. [2024-11-23 18:32:10,874 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 246 transitions. Word has length 133 [2024-11-23 18:32:10,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:10,874 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 246 transitions. [2024-11-23 18:32:10,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:10,875 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 246 transitions. [2024-11-23 18:32:10,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-23 18:32:10,877 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:10,877 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:10,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 18:32:10,877 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:10,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:10,878 INFO L85 PathProgramCache]: Analyzing trace with hash -252020168, now seen corresponding path program 1 times [2024-11-23 18:32:10,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:10,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935086238] [2024-11-23 18:32:10,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:10,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:11,348 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-23 18:32:11,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:11,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935086238] [2024-11-23 18:32:11,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935086238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:11,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:11,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:32:11,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472310785] [2024-11-23 18:32:11,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:11,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:32:11,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:11,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:32:11,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:32:11,350 INFO L87 Difference]: Start difference. First operand 175 states and 246 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:11,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:11,502 INFO L93 Difference]: Finished difference Result 479 states and 672 transitions. [2024-11-23 18:32:11,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:32:11,506 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 134 [2024-11-23 18:32:11,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:11,508 INFO L225 Difference]: With dead ends: 479 [2024-11-23 18:32:11,509 INFO L226 Difference]: Without dead ends: 307 [2024-11-23 18:32:11,512 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:32:11,513 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 95 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:11,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 557 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:32:11,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-11-23 18:32:11,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 303. [2024-11-23 18:32:11,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 246 states have (on average 1.3170731707317074) internal successors, (324), 248 states have internal predecessors, (324), 50 states have call successors, (50), 6 states have call predecessors, (50), 6 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-23 18:32:11,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 424 transitions. [2024-11-23 18:32:11,555 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 424 transitions. Word has length 134 [2024-11-23 18:32:11,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:11,556 INFO L471 AbstractCegarLoop]: Abstraction has 303 states and 424 transitions. [2024-11-23 18:32:11,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:11,556 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 424 transitions. [2024-11-23 18:32:11,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-23 18:32:11,558 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:11,559 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:11,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 18:32:11,559 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:11,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:11,560 INFO L85 PathProgramCache]: Analyzing trace with hash -314059782, now seen corresponding path program 1 times [2024-11-23 18:32:11,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:11,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159149524] [2024-11-23 18:32:11,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:11,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:11,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:12,080 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-23 18:32:12,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:12,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159149524] [2024-11-23 18:32:12,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159149524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:12,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:12,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:32:12,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718896547] [2024-11-23 18:32:12,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:12,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:32:12,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:12,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:32:12,082 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:32:12,082 INFO L87 Difference]: Start difference. First operand 303 states and 424 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:12,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:12,266 INFO L93 Difference]: Finished difference Result 741 states and 1028 transitions. [2024-11-23 18:32:12,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:32:12,266 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 134 [2024-11-23 18:32:12,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:12,271 INFO L225 Difference]: With dead ends: 741 [2024-11-23 18:32:12,271 INFO L226 Difference]: Without dead ends: 441 [2024-11-23 18:32:12,272 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:32:12,272 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 156 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:12,273 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 522 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:32:12,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2024-11-23 18:32:12,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 215. [2024-11-23 18:32:12,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 175 states have (on average 1.2971428571428572) internal successors, (227), 175 states have internal predecessors, (227), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-23 18:32:12,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 295 transitions. [2024-11-23 18:32:12,302 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 295 transitions. Word has length 134 [2024-11-23 18:32:12,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:12,303 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 295 transitions. [2024-11-23 18:32:12,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:12,303 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 295 transitions. [2024-11-23 18:32:12,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-23 18:32:12,305 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:12,305 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:12,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 18:32:12,305 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:12,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:12,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1315430834, now seen corresponding path program 1 times [2024-11-23 18:32:12,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:12,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130436996] [2024-11-23 18:32:12,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:12,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:13,330 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-23 18:32:13,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:13,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130436996] [2024-11-23 18:32:13,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130436996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:13,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:13,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 18:32:13,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37357527] [2024-11-23 18:32:13,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:13,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 18:32:13,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:13,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 18:32:13,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 18:32:13,333 INFO L87 Difference]: Start difference. First operand 215 states and 295 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:13,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:13,726 INFO L93 Difference]: Finished difference Result 473 states and 650 transitions. [2024-11-23 18:32:13,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 18:32:13,727 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 135 [2024-11-23 18:32:13,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:13,730 INFO L225 Difference]: With dead ends: 473 [2024-11-23 18:32:13,730 INFO L226 Difference]: Without dead ends: 261 [2024-11-23 18:32:13,731 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-23 18:32:13,732 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 51 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:13,732 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 932 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 18:32:13,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-11-23 18:32:13,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 232. [2024-11-23 18:32:13,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 192 states have (on average 1.296875) internal successors, (249), 192 states have internal predecessors, (249), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-23 18:32:13,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 317 transitions. [2024-11-23 18:32:13,770 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 317 transitions. Word has length 135 [2024-11-23 18:32:13,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:13,771 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 317 transitions. [2024-11-23 18:32:13,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:13,771 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 317 transitions. [2024-11-23 18:32:13,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-23 18:32:13,775 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:13,776 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:13,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 18:32:13,776 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:13,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:13,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1573596272, now seen corresponding path program 1 times [2024-11-23 18:32:13,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:13,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121366806] [2024-11-23 18:32:13,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:13,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:13,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:14,209 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-23 18:32:14,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:14,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121366806] [2024-11-23 18:32:14,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121366806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:14,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:14,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 18:32:14,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788157658] [2024-11-23 18:32:14,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:14,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 18:32:14,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:14,210 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 18:32:14,210 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:32:14,211 INFO L87 Difference]: Start difference. First operand 232 states and 317 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:14,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:14,453 INFO L93 Difference]: Finished difference Result 495 states and 676 transitions. [2024-11-23 18:32:14,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 18:32:14,454 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 135 [2024-11-23 18:32:14,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:14,456 INFO L225 Difference]: With dead ends: 495 [2024-11-23 18:32:14,456 INFO L226 Difference]: Without dead ends: 266 [2024-11-23 18:32:14,456 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:32:14,457 INFO L435 NwaCegarLoop]: 169 mSDtfsCounter, 53 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:14,461 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 720 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 18:32:14,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-23 18:32:14,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 263. [2024-11-23 18:32:14,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 220 states have (on average 1.3045454545454545) internal successors, (287), 221 states have internal predecessors, (287), 36 states have call successors, (36), 6 states have call predecessors, (36), 6 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-23 18:32:14,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 359 transitions. [2024-11-23 18:32:14,495 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 359 transitions. Word has length 135 [2024-11-23 18:32:14,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:14,495 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 359 transitions. [2024-11-23 18:32:14,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:14,496 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 359 transitions. [2024-11-23 18:32:14,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-23 18:32:14,497 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:14,497 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:14,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 18:32:14,498 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:14,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:14,498 INFO L85 PathProgramCache]: Analyzing trace with hash 497782384, now seen corresponding path program 1 times [2024-11-23 18:32:14,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:14,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126705052] [2024-11-23 18:32:14,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:14,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:14,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:14,958 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-23 18:32:14,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:14,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126705052] [2024-11-23 18:32:14,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126705052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:14,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:14,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 18:32:14,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279659662] [2024-11-23 18:32:14,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:14,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 18:32:14,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:14,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 18:32:14,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:32:14,960 INFO L87 Difference]: Start difference. First operand 263 states and 359 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:15,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:15,195 INFO L93 Difference]: Finished difference Result 530 states and 720 transitions. [2024-11-23 18:32:15,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 18:32:15,196 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 135 [2024-11-23 18:32:15,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:15,198 INFO L225 Difference]: With dead ends: 530 [2024-11-23 18:32:15,198 INFO L226 Difference]: Without dead ends: 270 [2024-11-23 18:32:15,199 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:32:15,200 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 56 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:15,200 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 564 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 18:32:15,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-11-23 18:32:15,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 236. [2024-11-23 18:32:15,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 195 states have (on average 1.2820512820512822) internal successors, (250), 195 states have internal predecessors, (250), 34 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-23 18:32:15,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 318 transitions. [2024-11-23 18:32:15,224 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 318 transitions. Word has length 135 [2024-11-23 18:32:15,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:15,225 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 318 transitions. [2024-11-23 18:32:15,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:15,225 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 318 transitions. [2024-11-23 18:32:15,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-23 18:32:15,227 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:15,227 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:15,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 18:32:15,227 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:15,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:15,228 INFO L85 PathProgramCache]: Analyzing trace with hash 755947822, now seen corresponding path program 1 times [2024-11-23 18:32:15,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:15,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898768105] [2024-11-23 18:32:15,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:15,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:15,955 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-23 18:32:15,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:15,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898768105] [2024-11-23 18:32:15,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898768105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:15,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:15,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 18:32:15,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709994546] [2024-11-23 18:32:15,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:15,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 18:32:15,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:15,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 18:32:15,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-23 18:32:15,958 INFO L87 Difference]: Start difference. First operand 236 states and 318 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:16,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:16,262 INFO L93 Difference]: Finished difference Result 495 states and 669 transitions. [2024-11-23 18:32:16,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 18:32:16,262 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 135 [2024-11-23 18:32:16,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:16,264 INFO L225 Difference]: With dead ends: 495 [2024-11-23 18:32:16,264 INFO L226 Difference]: Without dead ends: 262 [2024-11-23 18:32:16,266 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-23 18:32:16,267 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 46 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:16,267 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 1316 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 18:32:16,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-11-23 18:32:16,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 233. [2024-11-23 18:32:16,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 192 states have (on average 1.28125) internal successors, (246), 192 states have internal predecessors, (246), 34 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-23 18:32:16,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 314 transitions. [2024-11-23 18:32:16,302 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 314 transitions. Word has length 135 [2024-11-23 18:32:16,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:16,303 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 314 transitions. [2024-11-23 18:32:16,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:16,303 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 314 transitions. [2024-11-23 18:32:16,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-23 18:32:16,305 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:16,305 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:16,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 18:32:16,305 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:16,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:16,305 INFO L85 PathProgramCache]: Analyzing trace with hash -697675202, now seen corresponding path program 1 times [2024-11-23 18:32:16,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:16,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363936286] [2024-11-23 18:32:16,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:16,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:16,691 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-23 18:32:16,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:16,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363936286] [2024-11-23 18:32:16,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363936286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:16,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:16,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:32:16,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431770522] [2024-11-23 18:32:16,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:16,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:32:16,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:16,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:32:16,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:32:16,693 INFO L87 Difference]: Start difference. First operand 233 states and 314 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:16,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:16,792 INFO L93 Difference]: Finished difference Result 600 states and 804 transitions. [2024-11-23 18:32:16,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:32:16,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 135 [2024-11-23 18:32:16,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:16,795 INFO L225 Difference]: With dead ends: 600 [2024-11-23 18:32:16,795 INFO L226 Difference]: Without dead ends: 370 [2024-11-23 18:32:16,796 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:32:16,796 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 81 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:16,796 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 471 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:32:16,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2024-11-23 18:32:16,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 274. [2024-11-23 18:32:16,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 233 states have (on average 1.2703862660944205) internal successors, (296), 233 states have internal predecessors, (296), 34 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-23 18:32:16,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 364 transitions. [2024-11-23 18:32:16,823 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 364 transitions. Word has length 135 [2024-11-23 18:32:16,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:16,823 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 364 transitions. [2024-11-23 18:32:16,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:16,824 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 364 transitions. [2024-11-23 18:32:16,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-23 18:32:16,825 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:16,826 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:16,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 18:32:16,826 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:16,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:16,827 INFO L85 PathProgramCache]: Analyzing trace with hash 3389376, now seen corresponding path program 1 times [2024-11-23 18:32:16,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:16,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167711972] [2024-11-23 18:32:16,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:16,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:16,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:17,750 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-23 18:32:17,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:17,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167711972] [2024-11-23 18:32:17,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167711972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:17,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:17,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 18:32:17,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307283706] [2024-11-23 18:32:17,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:17,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 18:32:17,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:17,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 18:32:17,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:32:17,753 INFO L87 Difference]: Start difference. First operand 274 states and 364 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:18,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:18,277 INFO L93 Difference]: Finished difference Result 794 states and 1052 transitions. [2024-11-23 18:32:18,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 18:32:18,278 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 135 [2024-11-23 18:32:18,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:18,281 INFO L225 Difference]: With dead ends: 794 [2024-11-23 18:32:18,281 INFO L226 Difference]: Without dead ends: 523 [2024-11-23 18:32:18,282 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-23 18:32:18,282 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 123 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:18,283 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 825 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 18:32:18,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2024-11-23 18:32:18,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 329. [2024-11-23 18:32:18,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 288 states have (on average 1.2743055555555556) internal successors, (367), 288 states have internal predecessors, (367), 34 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-23 18:32:18,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 435 transitions. [2024-11-23 18:32:18,316 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 435 transitions. Word has length 135 [2024-11-23 18:32:18,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:18,317 INFO L471 AbstractCegarLoop]: Abstraction has 329 states and 435 transitions. [2024-11-23 18:32:18,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:18,317 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 435 transitions. [2024-11-23 18:32:18,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-23 18:32:18,319 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:18,319 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:18,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 18:32:18,319 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:18,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:18,320 INFO L85 PathProgramCache]: Analyzing trace with hash 65428990, now seen corresponding path program 1 times [2024-11-23 18:32:18,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:18,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476923276] [2024-11-23 18:32:18,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:18,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:18,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:18,673 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-23 18:32:18,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:18,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476923276] [2024-11-23 18:32:18,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476923276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:18,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:18,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:32:18,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249696494] [2024-11-23 18:32:18,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:18,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:32:18,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:18,675 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:32:18,675 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:32:18,675 INFO L87 Difference]: Start difference. First operand 329 states and 435 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:18,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:18,841 INFO L93 Difference]: Finished difference Result 759 states and 998 transitions. [2024-11-23 18:32:18,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:32:18,842 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 135 [2024-11-23 18:32:18,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:18,845 INFO L225 Difference]: With dead ends: 759 [2024-11-23 18:32:18,845 INFO L226 Difference]: Without dead ends: 433 [2024-11-23 18:32:18,846 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:32:18,846 INFO L435 NwaCegarLoop]: 217 mSDtfsCounter, 140 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:18,847 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 540 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:32:18,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2024-11-23 18:32:18,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 429. [2024-11-23 18:32:18,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 362 states have (on average 1.2513812154696133) internal successors, (453), 364 states have internal predecessors, (453), 54 states have call successors, (54), 12 states have call predecessors, (54), 12 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-23 18:32:18,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 561 transitions. [2024-11-23 18:32:18,901 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 561 transitions. Word has length 135 [2024-11-23 18:32:18,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:18,901 INFO L471 AbstractCegarLoop]: Abstraction has 429 states and 561 transitions. [2024-11-23 18:32:18,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:18,902 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 561 transitions. [2024-11-23 18:32:18,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-23 18:32:18,904 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:18,904 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:18,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 18:32:18,904 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:18,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:18,904 INFO L85 PathProgramCache]: Analyzing trace with hash -568417833, now seen corresponding path program 1 times [2024-11-23 18:32:18,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:18,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421457218] [2024-11-23 18:32:18,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:18,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:19,070 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-23 18:32:19,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:19,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421457218] [2024-11-23 18:32:19,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421457218] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:19,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:19,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:32:19,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215154117] [2024-11-23 18:32:19,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:19,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:32:19,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:19,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:32:19,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:32:19,073 INFO L87 Difference]: Start difference. First operand 429 states and 561 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:19,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:19,274 INFO L93 Difference]: Finished difference Result 1139 states and 1481 transitions. [2024-11-23 18:32:19,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:32:19,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 139 [2024-11-23 18:32:19,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:19,278 INFO L225 Difference]: With dead ends: 1139 [2024-11-23 18:32:19,278 INFO L226 Difference]: Without dead ends: 713 [2024-11-23 18:32:19,280 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:32:19,280 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 57 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:19,280 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 472 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:32:19,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2024-11-23 18:32:19,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 707. [2024-11-23 18:32:19,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 616 states have (on average 1.2564935064935066) internal successors, (774), 622 states have internal predecessors, (774), 70 states have call successors, (70), 20 states have call predecessors, (70), 20 states have return successors, (70), 64 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-23 18:32:19,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 914 transitions. [2024-11-23 18:32:19,392 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 914 transitions. Word has length 139 [2024-11-23 18:32:19,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:19,392 INFO L471 AbstractCegarLoop]: Abstraction has 707 states and 914 transitions. [2024-11-23 18:32:19,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:19,392 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 914 transitions. [2024-11-23 18:32:19,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-23 18:32:19,396 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:19,396 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:19,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 18:32:19,396 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:19,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:19,397 INFO L85 PathProgramCache]: Analyzing trace with hash 111640537, now seen corresponding path program 1 times [2024-11-23 18:32:19,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:19,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240953362] [2024-11-23 18:32:19,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:19,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:20,125 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-23 18:32:20,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:20,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240953362] [2024-11-23 18:32:20,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240953362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:20,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:20,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 18:32:20,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491563359] [2024-11-23 18:32:20,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:20,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 18:32:20,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:20,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 18:32:20,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-23 18:32:20,128 INFO L87 Difference]: Start difference. First operand 707 states and 914 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:20,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:20,534 INFO L93 Difference]: Finished difference Result 1435 states and 1853 transitions. [2024-11-23 18:32:20,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 18:32:20,534 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 139 [2024-11-23 18:32:20,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:20,539 INFO L225 Difference]: With dead ends: 1435 [2024-11-23 18:32:20,539 INFO L226 Difference]: Without dead ends: 731 [2024-11-23 18:32:20,541 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-11-23 18:32:20,544 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 54 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:20,544 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 988 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 18:32:20,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2024-11-23 18:32:20,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 719. [2024-11-23 18:32:20,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 628 states have (on average 1.2515923566878981) internal successors, (786), 634 states have internal predecessors, (786), 70 states have call successors, (70), 20 states have call predecessors, (70), 20 states have return successors, (70), 64 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-23 18:32:20,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 926 transitions. [2024-11-23 18:32:20,638 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 926 transitions. Word has length 139 [2024-11-23 18:32:20,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:20,638 INFO L471 AbstractCegarLoop]: Abstraction has 719 states and 926 transitions. [2024-11-23 18:32:20,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:20,638 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 926 transitions. [2024-11-23 18:32:20,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-23 18:32:20,641 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:20,642 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:20,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 18:32:20,643 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:20,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:20,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1376130766, now seen corresponding path program 1 times [2024-11-23 18:32:20,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:20,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123290982] [2024-11-23 18:32:20,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:20,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:21,048 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-23 18:32:21,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:21,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123290982] [2024-11-23 18:32:21,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123290982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:21,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:21,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:32:21,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226735747] [2024-11-23 18:32:21,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:21,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:32:21,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:21,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:32:21,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:32:21,050 INFO L87 Difference]: Start difference. First operand 719 states and 926 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:21,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:21,219 INFO L93 Difference]: Finished difference Result 1613 states and 2076 transitions. [2024-11-23 18:32:21,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:32:21,220 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 139 [2024-11-23 18:32:21,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:21,225 INFO L225 Difference]: With dead ends: 1613 [2024-11-23 18:32:21,225 INFO L226 Difference]: Without dead ends: 897 [2024-11-23 18:32:21,226 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:32:21,227 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 73 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:21,228 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 469 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:32:21,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2024-11-23 18:32:21,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 743. [2024-11-23 18:32:21,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 652 states have (on average 1.2484662576687116) internal successors, (814), 658 states have internal predecessors, (814), 70 states have call successors, (70), 20 states have call predecessors, (70), 20 states have return successors, (70), 64 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-23 18:32:21,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 954 transitions. [2024-11-23 18:32:21,324 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 954 transitions. Word has length 139 [2024-11-23 18:32:21,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:21,325 INFO L471 AbstractCegarLoop]: Abstraction has 743 states and 954 transitions. [2024-11-23 18:32:21,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:21,325 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 954 transitions. [2024-11-23 18:32:21,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-23 18:32:21,327 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:21,328 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:21,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 18:32:21,329 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:21,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:21,329 INFO L85 PathProgramCache]: Analyzing trace with hash 2056189136, now seen corresponding path program 1 times [2024-11-23 18:32:21,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:21,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525969102] [2024-11-23 18:32:21,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:21,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:21,568 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 24 proven. 24 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-23 18:32:21,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:21,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525969102] [2024-11-23 18:32:21,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525969102] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:32:21,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885451937] [2024-11-23 18:32:21,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:21,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:32:21,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32a6a18-727e-43ac-8397-eb8304a688db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:32:21,571 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32a6a18-727e-43ac-8397-eb8304a688db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:32:21,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32a6a18-727e-43ac-8397-eb8304a688db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 18:32:21,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:21,856 INFO L256 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 18:32:21,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:32:21,932 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-23 18:32:21,932 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:32:21,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885451937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:21,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:32:21,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 10 [2024-11-23 18:32:21,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319184112] [2024-11-23 18:32:21,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:21,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 18:32:21,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:21,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 18:32:21,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-23 18:32:21,935 INFO L87 Difference]: Start difference. First operand 743 states and 954 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:22,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:22,059 INFO L93 Difference]: Finished difference Result 1505 states and 1933 transitions. [2024-11-23 18:32:22,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 18:32:22,060 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 139 [2024-11-23 18:32:22,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:22,064 INFO L225 Difference]: With dead ends: 1505 [2024-11-23 18:32:22,064 INFO L226 Difference]: Without dead ends: 765 [2024-11-23 18:32:22,066 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-23 18:32:22,066 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 0 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:22,066 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 606 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:32:22,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2024-11-23 18:32:22,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 753. [2024-11-23 18:32:22,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 662 states have (on average 1.241691842900302) internal successors, (822), 668 states have internal predecessors, (822), 70 states have call successors, (70), 20 states have call predecessors, (70), 20 states have return successors, (70), 64 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-23 18:32:22,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 962 transitions. [2024-11-23 18:32:22,156 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 962 transitions. Word has length 139 [2024-11-23 18:32:22,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:22,157 INFO L471 AbstractCegarLoop]: Abstraction has 753 states and 962 transitions. [2024-11-23 18:32:22,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:22,157 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 962 transitions. [2024-11-23 18:32:22,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-23 18:32:22,160 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:22,160 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:22,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32a6a18-727e-43ac-8397-eb8304a688db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 18:32:22,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32a6a18-727e-43ac-8397-eb8304a688db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-23 18:32:22,361 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:22,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:22,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1803321429, now seen corresponding path program 1 times [2024-11-23 18:32:22,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:22,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503104591] [2024-11-23 18:32:22,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:22,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:22,905 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-23 18:32:22,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:22,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503104591] [2024-11-23 18:32:22,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503104591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:22,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:22,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 18:32:22,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117448304] [2024-11-23 18:32:22,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:22,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 18:32:22,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:22,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 18:32:22,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:32:22,908 INFO L87 Difference]: Start difference. First operand 753 states and 962 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:23,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:23,415 INFO L93 Difference]: Finished difference Result 1773 states and 2263 transitions. [2024-11-23 18:32:23,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 18:32:23,416 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 139 [2024-11-23 18:32:23,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:23,421 INFO L225 Difference]: With dead ends: 1773 [2024-11-23 18:32:23,422 INFO L226 Difference]: Without dead ends: 1023 [2024-11-23 18:32:23,423 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-23 18:32:23,424 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 164 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:23,424 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 954 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 18:32:23,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2024-11-23 18:32:23,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 763. [2024-11-23 18:32:23,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 672 states have (on average 1.2395833333333333) internal successors, (833), 678 states have internal predecessors, (833), 70 states have call successors, (70), 20 states have call predecessors, (70), 20 states have return successors, (70), 64 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-23 18:32:23,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 973 transitions. [2024-11-23 18:32:23,525 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 973 transitions. Word has length 139 [2024-11-23 18:32:23,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:23,525 INFO L471 AbstractCegarLoop]: Abstraction has 763 states and 973 transitions. [2024-11-23 18:32:23,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:23,526 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 973 transitions. [2024-11-23 18:32:23,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-23 18:32:23,528 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:23,528 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:23,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 18:32:23,528 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:23,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:23,529 INFO L85 PathProgramCache]: Analyzing trace with hash 2022176147, now seen corresponding path program 1 times [2024-11-23 18:32:23,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:23,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480968336] [2024-11-23 18:32:23,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:23,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:23,996 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-23 18:32:23,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:23,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480968336] [2024-11-23 18:32:23,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480968336] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:32:23,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879577231] [2024-11-23 18:32:23,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:23,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:32:23,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32a6a18-727e-43ac-8397-eb8304a688db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:32:23,999 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32a6a18-727e-43ac-8397-eb8304a688db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:32:24,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32a6a18-727e-43ac-8397-eb8304a688db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 18:32:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:24,283 INFO L256 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 18:32:24,291 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:32:24,399 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 17 treesize of output 13 [2024-11-23 18:32:24,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2024-11-23 18:32:24,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-23 18:32:24,587 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-23 18:32:24,587 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:32:24,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879577231] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:24,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:32:24,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2024-11-23 18:32:24,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241457634] [2024-11-23 18:32:24,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:24,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 18:32:24,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:24,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 18:32:24,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2024-11-23 18:32:24,590 INFO L87 Difference]: Start difference. First operand 763 states and 973 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:25,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:25,023 INFO L93 Difference]: Finished difference Result 1797 states and 2289 transitions. [2024-11-23 18:32:25,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 18:32:25,025 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 139 [2024-11-23 18:32:25,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:25,030 INFO L225 Difference]: With dead ends: 1797 [2024-11-23 18:32:25,030 INFO L226 Difference]: Without dead ends: 1037 [2024-11-23 18:32:25,032 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2024-11-23 18:32:25,032 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 56 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:25,033 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 1329 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 18:32:25,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2024-11-23 18:32:25,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 907. [2024-11-23 18:32:25,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 816 states have (on average 1.25) internal successors, (1020), 822 states have internal predecessors, (1020), 70 states have call successors, (70), 20 states have call predecessors, (70), 20 states have return successors, (70), 64 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-23 18:32:25,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1160 transitions. [2024-11-23 18:32:25,125 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1160 transitions. Word has length 139 [2024-11-23 18:32:25,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:25,125 INFO L471 AbstractCegarLoop]: Abstraction has 907 states and 1160 transitions. [2024-11-23 18:32:25,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:25,126 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1160 transitions. [2024-11-23 18:32:25,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-23 18:32:25,128 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:25,129 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:25,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32a6a18-727e-43ac-8397-eb8304a688db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 18:32:25,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32a6a18-727e-43ac-8397-eb8304a688db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:32:25,329 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:25,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:25,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1592732779, now seen corresponding path program 1 times [2024-11-23 18:32:25,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:25,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711519974] [2024-11-23 18:32:25,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:25,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:25,483 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-23 18:32:25,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:25,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711519974] [2024-11-23 18:32:25,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711519974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:25,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:25,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:32:25,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995567224] [2024-11-23 18:32:25,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:25,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:32:25,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:25,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:32:25,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:32:25,486 INFO L87 Difference]: Start difference. First operand 907 states and 1160 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:25,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:25,695 INFO L93 Difference]: Finished difference Result 1951 states and 2484 transitions. [2024-11-23 18:32:25,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:32:25,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 139 [2024-11-23 18:32:25,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:25,701 INFO L225 Difference]: With dead ends: 1951 [2024-11-23 18:32:25,702 INFO L226 Difference]: Without dead ends: 1047 [2024-11-23 18:32:25,703 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:32:25,704 INFO L435 NwaCegarLoop]: 183 mSDtfsCounter, 54 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:25,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 494 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:32:25,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2024-11-23 18:32:25,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 903. [2024-11-23 18:32:25,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 812 states have (on average 1.2463054187192117) internal successors, (1012), 818 states have internal predecessors, (1012), 70 states have call successors, (70), 20 states have call predecessors, (70), 20 states have return successors, (70), 64 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-23 18:32:25,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1152 transitions. [2024-11-23 18:32:25,811 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1152 transitions. Word has length 139 [2024-11-23 18:32:25,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:25,812 INFO L471 AbstractCegarLoop]: Abstraction has 903 states and 1152 transitions. [2024-11-23 18:32:25,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:25,812 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1152 transitions. [2024-11-23 18:32:25,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-23 18:32:25,816 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:25,816 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:25,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-23 18:32:25,816 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:25,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:25,817 INFO L85 PathProgramCache]: Analyzing trace with hash -597753543, now seen corresponding path program 1 times [2024-11-23 18:32:25,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:25,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406651116] [2024-11-23 18:32:25,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:25,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:26,977 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-23 18:32:26,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:26,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406651116] [2024-11-23 18:32:26,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406651116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:26,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:26,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 18:32:26,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129090990] [2024-11-23 18:32:26,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:26,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 18:32:26,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:26,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 18:32:26,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-23 18:32:26,980 INFO L87 Difference]: Start difference. First operand 903 states and 1152 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-23 18:32:28,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:28,158 INFO L93 Difference]: Finished difference Result 1987 states and 2522 transitions. [2024-11-23 18:32:28,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 18:32:28,159 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 139 [2024-11-23 18:32:28,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:28,166 INFO L225 Difference]: With dead ends: 1987 [2024-11-23 18:32:28,166 INFO L226 Difference]: Without dead ends: 1087 [2024-11-23 18:32:28,168 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2024-11-23 18:32:28,169 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 448 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:28,169 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 869 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 18:32:28,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2024-11-23 18:32:28,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 967. [2024-11-23 18:32:28,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 858 states have (on average 1.2377622377622377) internal successors, (1062), 865 states have internal predecessors, (1062), 82 states have call successors, (82), 26 states have call predecessors, (82), 26 states have return successors, (82), 75 states have call predecessors, (82), 82 states have call successors, (82) [2024-11-23 18:32:28,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1226 transitions. [2024-11-23 18:32:28,307 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1226 transitions. Word has length 139 [2024-11-23 18:32:28,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:28,308 INFO L471 AbstractCegarLoop]: Abstraction has 967 states and 1226 transitions. [2024-11-23 18:32:28,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-23 18:32:28,308 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1226 transitions. [2024-11-23 18:32:28,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-23 18:32:28,311 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:28,311 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:28,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-23 18:32:28,312 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:28,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:28,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1346795056, now seen corresponding path program 1 times [2024-11-23 18:32:28,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:28,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642551745] [2024-11-23 18:32:28,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:28,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:28,654 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-23 18:32:28,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:28,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642551745] [2024-11-23 18:32:28,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642551745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:28,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:28,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 18:32:28,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044983858] [2024-11-23 18:32:28,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:28,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:32:28,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:28,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:32:28,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:32:28,656 INFO L87 Difference]: Start difference. First operand 967 states and 1226 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:28,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:28,945 INFO L93 Difference]: Finished difference Result 2041 states and 2586 transitions. [2024-11-23 18:32:28,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 18:32:28,946 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 139 [2024-11-23 18:32:28,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:28,953 INFO L225 Difference]: With dead ends: 2041 [2024-11-23 18:32:28,953 INFO L226 Difference]: Without dead ends: 1094 [2024-11-23 18:32:28,955 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-23 18:32:28,958 INFO L435 NwaCegarLoop]: 179 mSDtfsCounter, 62 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:28,958 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 970 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:32:28,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2024-11-23 18:32:29,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 997. [2024-11-23 18:32:29,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 888 states have (on average 1.240990990990991) internal successors, (1102), 895 states have internal predecessors, (1102), 82 states have call successors, (82), 26 states have call predecessors, (82), 26 states have return successors, (82), 75 states have call predecessors, (82), 82 states have call successors, (82) [2024-11-23 18:32:29,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1266 transitions. [2024-11-23 18:32:29,076 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1266 transitions. Word has length 139 [2024-11-23 18:32:29,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:29,077 INFO L471 AbstractCegarLoop]: Abstraction has 997 states and 1266 transitions. [2024-11-23 18:32:29,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:29,077 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1266 transitions. [2024-11-23 18:32:29,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-23 18:32:29,080 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:29,080 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:29,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-23 18:32:29,080 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:29,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:29,081 INFO L85 PathProgramCache]: Analyzing trace with hash 850117294, now seen corresponding path program 1 times [2024-11-23 18:32:29,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:29,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13300179] [2024-11-23 18:32:29,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:29,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:29,539 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-23 18:32:29,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:29,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13300179] [2024-11-23 18:32:29,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13300179] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:29,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:29,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:32:29,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946663342] [2024-11-23 18:32:29,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:29,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:32:29,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:29,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:32:29,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:32:29,542 INFO L87 Difference]: Start difference. First operand 997 states and 1266 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:29,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:29,798 INFO L93 Difference]: Finished difference Result 1978 states and 2505 transitions. [2024-11-23 18:32:29,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:32:29,799 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 140 [2024-11-23 18:32:29,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:29,804 INFO L225 Difference]: With dead ends: 1978 [2024-11-23 18:32:29,804 INFO L226 Difference]: Without dead ends: 1001 [2024-11-23 18:32:29,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:32:29,807 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 58 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:29,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 545 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:32:29,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2024-11-23 18:32:29,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 975. [2024-11-23 18:32:29,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 862 states have (on average 1.2250580046403712) internal successors, (1056), 869 states have internal predecessors, (1056), 82 states have call successors, (82), 30 states have call predecessors, (82), 30 states have return successors, (82), 75 states have call predecessors, (82), 82 states have call successors, (82) [2024-11-23 18:32:29,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1220 transitions. [2024-11-23 18:32:29,932 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1220 transitions. Word has length 140 [2024-11-23 18:32:29,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:29,933 INFO L471 AbstractCegarLoop]: Abstraction has 975 states and 1220 transitions. [2024-11-23 18:32:29,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:29,933 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1220 transitions. [2024-11-23 18:32:29,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-23 18:32:29,935 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:29,936 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:29,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-23 18:32:29,936 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:29,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:29,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1684666373, now seen corresponding path program 1 times [2024-11-23 18:32:29,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:29,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734079685] [2024-11-23 18:32:29,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:29,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:30,688 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-23 18:32:30,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:30,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734079685] [2024-11-23 18:32:30,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734079685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:30,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:30,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 18:32:30,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274112816] [2024-11-23 18:32:30,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:30,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 18:32:30,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:30,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 18:32:30,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-23 18:32:30,691 INFO L87 Difference]: Start difference. First operand 975 states and 1220 transitions. Second operand has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 10 states have internal predecessors, (59), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-23 18:32:31,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:31,467 INFO L93 Difference]: Finished difference Result 1563 states and 1908 transitions. [2024-11-23 18:32:31,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 18:32:31,468 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 10 states have internal predecessors, (59), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 141 [2024-11-23 18:32:31,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:31,479 INFO L225 Difference]: With dead ends: 1563 [2024-11-23 18:32:31,479 INFO L226 Difference]: Without dead ends: 1561 [2024-11-23 18:32:31,480 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-11-23 18:32:31,481 INFO L435 NwaCegarLoop]: 163 mSDtfsCounter, 174 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:31,482 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 983 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 18:32:31,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2024-11-23 18:32:31,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 1557. [2024-11-23 18:32:31,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1557 states, 1344 states have (on average 1.181547619047619) internal successors, (1588), 1359 states have internal predecessors, (1588), 154 states have call successors, (154), 58 states have call predecessors, (154), 58 states have return successors, (154), 139 states have call predecessors, (154), 154 states have call successors, (154) [2024-11-23 18:32:31,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1557 states to 1557 states and 1896 transitions. [2024-11-23 18:32:31,715 INFO L78 Accepts]: Start accepts. Automaton has 1557 states and 1896 transitions. Word has length 141 [2024-11-23 18:32:31,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:31,717 INFO L471 AbstractCegarLoop]: Abstraction has 1557 states and 1896 transitions. [2024-11-23 18:32:31,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 10 states have internal predecessors, (59), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-23 18:32:31,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1557 states and 1896 transitions. [2024-11-23 18:32:31,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-23 18:32:31,720 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:31,720 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:31,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-23 18:32:31,721 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:31,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:31,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1037781860, now seen corresponding path program 1 times [2024-11-23 18:32:31,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:31,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887010440] [2024-11-23 18:32:31,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:31,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:31,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:32,029 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-23 18:32:32,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:32,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887010440] [2024-11-23 18:32:32,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887010440] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:32,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:32,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:32:32,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714943266] [2024-11-23 18:32:32,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:32,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:32:32,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:32,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:32:32,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:32:32,031 INFO L87 Difference]: Start difference. First operand 1557 states and 1896 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:32,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:32,415 INFO L93 Difference]: Finished difference Result 3554 states and 4316 transitions. [2024-11-23 18:32:32,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:32:32,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 141 [2024-11-23 18:32:32,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:32,431 INFO L225 Difference]: With dead ends: 3554 [2024-11-23 18:32:32,431 INFO L226 Difference]: Without dead ends: 2017 [2024-11-23 18:32:32,434 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:32:32,435 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 116 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:32,436 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 493 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:32:32,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2024-11-23 18:32:32,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 1731. [2024-11-23 18:32:32,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1518 states have (on average 1.1758893280632412) internal successors, (1785), 1533 states have internal predecessors, (1785), 154 states have call successors, (154), 58 states have call predecessors, (154), 58 states have return successors, (154), 139 states have call predecessors, (154), 154 states have call successors, (154) [2024-11-23 18:32:32,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2093 transitions. [2024-11-23 18:32:32,673 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2093 transitions. Word has length 141 [2024-11-23 18:32:32,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:32,674 INFO L471 AbstractCegarLoop]: Abstraction has 1731 states and 2093 transitions. [2024-11-23 18:32:32,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:32,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2093 transitions. [2024-11-23 18:32:32,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-23 18:32:32,678 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:32,678 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:32,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-23 18:32:32,678 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:32,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:32,679 INFO L85 PathProgramCache]: Analyzing trace with hash 339047129, now seen corresponding path program 1 times [2024-11-23 18:32:32,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:32,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370814942] [2024-11-23 18:32:32,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:32,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:32,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:33,093 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-23 18:32:33,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:33,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370814942] [2024-11-23 18:32:33,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370814942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:33,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:33,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:32:33,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521461509] [2024-11-23 18:32:33,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:33,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:32:33,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:33,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:32:33,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:32:33,095 INFO L87 Difference]: Start difference. First operand 1731 states and 2093 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:33,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:33,423 INFO L93 Difference]: Finished difference Result 3398 states and 4097 transitions. [2024-11-23 18:32:33,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:32:33,423 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 142 [2024-11-23 18:32:33,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:33,439 INFO L225 Difference]: With dead ends: 3398 [2024-11-23 18:32:33,439 INFO L226 Difference]: Without dead ends: 1687 [2024-11-23 18:32:33,442 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:32:33,443 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 58 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:33,444 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 496 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:32:33,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1687 states. [2024-11-23 18:32:33,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1687 to 1677. [2024-11-23 18:32:33,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1677 states, 1464 states have (on average 1.1584699453551912) internal successors, (1696), 1479 states have internal predecessors, (1696), 154 states have call successors, (154), 58 states have call predecessors, (154), 58 states have return successors, (154), 139 states have call predecessors, (154), 154 states have call successors, (154) [2024-11-23 18:32:33,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1677 states to 1677 states and 2004 transitions. [2024-11-23 18:32:33,675 INFO L78 Accepts]: Start accepts. Automaton has 1677 states and 2004 transitions. Word has length 142 [2024-11-23 18:32:33,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:33,675 INFO L471 AbstractCegarLoop]: Abstraction has 1677 states and 2004 transitions. [2024-11-23 18:32:33,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:33,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1677 states and 2004 transitions. [2024-11-23 18:32:33,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-23 18:32:33,678 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:33,678 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:33,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-23 18:32:33,680 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:33,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:33,681 INFO L85 PathProgramCache]: Analyzing trace with hash -840470491, now seen corresponding path program 1 times [2024-11-23 18:32:33,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:33,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869769370] [2024-11-23 18:32:33,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:33,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:33,924 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-23 18:32:33,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:33,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869769370] [2024-11-23 18:32:33,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869769370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:33,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:33,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:32:33,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822872081] [2024-11-23 18:32:33,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:33,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:32:33,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:33,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:32:33,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:32:33,928 INFO L87 Difference]: Start difference. First operand 1677 states and 2004 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:34,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:34,137 INFO L93 Difference]: Finished difference Result 2867 states and 3449 transitions. [2024-11-23 18:32:34,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:32:34,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 142 [2024-11-23 18:32:34,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:34,144 INFO L225 Difference]: With dead ends: 2867 [2024-11-23 18:32:34,144 INFO L226 Difference]: Without dead ends: 1148 [2024-11-23 18:32:34,147 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:32:34,148 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 80 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:34,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 471 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:32:34,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2024-11-23 18:32:34,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 1112. [2024-11-23 18:32:34,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 951 states have (on average 1.1503680336487907) internal successors, (1094), 961 states have internal predecessors, (1094), 118 states have call successors, (118), 42 states have call predecessors, (118), 42 states have return successors, (118), 108 states have call predecessors, (118), 118 states have call successors, (118) [2024-11-23 18:32:34,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1330 transitions. [2024-11-23 18:32:34,363 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1330 transitions. Word has length 142 [2024-11-23 18:32:34,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:34,364 INFO L471 AbstractCegarLoop]: Abstraction has 1112 states and 1330 transitions. [2024-11-23 18:32:34,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:34,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1330 transitions. [2024-11-23 18:32:34,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-23 18:32:34,367 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:34,367 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:34,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-23 18:32:34,368 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:34,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:34,371 INFO L85 PathProgramCache]: Analyzing trace with hash -996369262, now seen corresponding path program 1 times [2024-11-23 18:32:34,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:34,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602012183] [2024-11-23 18:32:34,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:34,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:34,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:34,644 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-23 18:32:34,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:34,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602012183] [2024-11-23 18:32:34,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602012183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:34,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:34,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:32:34,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593265227] [2024-11-23 18:32:34,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:34,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:32:34,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:34,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:32:34,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:32:34,647 INFO L87 Difference]: Start difference. First operand 1112 states and 1330 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:34,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:34,860 INFO L93 Difference]: Finished difference Result 2200 states and 2624 transitions. [2024-11-23 18:32:34,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:32:34,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 143 [2024-11-23 18:32:34,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:34,867 INFO L225 Difference]: With dead ends: 2200 [2024-11-23 18:32:34,867 INFO L226 Difference]: Without dead ends: 1091 [2024-11-23 18:32:34,869 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:32:34,872 INFO L435 NwaCegarLoop]: 192 mSDtfsCounter, 86 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:34,872 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 594 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:32:34,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2024-11-23 18:32:35,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1051. [2024-11-23 18:32:35,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 890 states have (on average 1.1404494382022472) internal successors, (1015), 900 states have internal predecessors, (1015), 118 states have call successors, (118), 42 states have call predecessors, (118), 42 states have return successors, (118), 108 states have call predecessors, (118), 118 states have call successors, (118) [2024-11-23 18:32:35,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1251 transitions. [2024-11-23 18:32:35,028 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1251 transitions. Word has length 143 [2024-11-23 18:32:35,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:35,028 INFO L471 AbstractCegarLoop]: Abstraction has 1051 states and 1251 transitions. [2024-11-23 18:32:35,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:35,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1251 transitions. [2024-11-23 18:32:35,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-23 18:32:35,045 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:35,045 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:35,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-23 18:32:35,045 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:35,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:35,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1560829808, now seen corresponding path program 1 times [2024-11-23 18:32:35,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:35,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418893052] [2024-11-23 18:32:35,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:35,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:35,316 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-23 18:32:35,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:35,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418893052] [2024-11-23 18:32:35,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418893052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:35,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:35,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:32:35,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183049909] [2024-11-23 18:32:35,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:35,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:32:35,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:35,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:32:35,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:32:35,319 INFO L87 Difference]: Start difference. First operand 1051 states and 1251 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:35,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:35,550 INFO L93 Difference]: Finished difference Result 2077 states and 2457 transitions. [2024-11-23 18:32:35,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:32:35,551 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 144 [2024-11-23 18:32:35,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:35,557 INFO L225 Difference]: With dead ends: 2077 [2024-11-23 18:32:35,557 INFO L226 Difference]: Without dead ends: 1029 [2024-11-23 18:32:35,560 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:32:35,564 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 95 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:35,565 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 353 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:32:35,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2024-11-23 18:32:35,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 995. [2024-11-23 18:32:35,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 834 states have (on average 1.1115107913669064) internal successors, (927), 844 states have internal predecessors, (927), 118 states have call successors, (118), 42 states have call predecessors, (118), 42 states have return successors, (118), 108 states have call predecessors, (118), 118 states have call successors, (118) [2024-11-23 18:32:35,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1163 transitions. [2024-11-23 18:32:35,706 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1163 transitions. Word has length 144 [2024-11-23 18:32:35,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:35,707 INFO L471 AbstractCegarLoop]: Abstraction has 995 states and 1163 transitions. [2024-11-23 18:32:35,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:35,708 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1163 transitions. [2024-11-23 18:32:35,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-23 18:32:35,711 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:35,712 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:35,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-23 18:32:35,712 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:35,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:35,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1027029127, now seen corresponding path program 1 times [2024-11-23 18:32:35,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:35,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644286073] [2024-11-23 18:32:35,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:35,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:35,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:36,505 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-23 18:32:36,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:36,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644286073] [2024-11-23 18:32:36,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644286073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:36,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:36,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 18:32:36,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430305382] [2024-11-23 18:32:36,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:36,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 18:32:36,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:36,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 18:32:36,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 18:32:36,507 INFO L87 Difference]: Start difference. First operand 995 states and 1163 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:36,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:36,992 INFO L93 Difference]: Finished difference Result 1286 states and 1504 transitions. [2024-11-23 18:32:36,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 18:32:36,993 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 144 [2024-11-23 18:32:36,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:37,000 INFO L225 Difference]: With dead ends: 1286 [2024-11-23 18:32:37,000 INFO L226 Difference]: Without dead ends: 1284 [2024-11-23 18:32:37,001 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-23 18:32:37,001 INFO L435 NwaCegarLoop]: 181 mSDtfsCounter, 67 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:37,004 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 1315 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 18:32:37,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2024-11-23 18:32:37,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1280. [2024-11-23 18:32:37,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 1069 states have (on average 1.1113189897100093) internal successors, (1188), 1083 states have internal predecessors, (1188), 154 states have call successors, (154), 56 states have call predecessors, (154), 56 states have return successors, (154), 140 states have call predecessors, (154), 154 states have call successors, (154) [2024-11-23 18:32:37,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1496 transitions. [2024-11-23 18:32:37,206 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1496 transitions. Word has length 144 [2024-11-23 18:32:37,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:37,206 INFO L471 AbstractCegarLoop]: Abstraction has 1280 states and 1496 transitions. [2024-11-23 18:32:37,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 18:32:37,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1496 transitions. [2024-11-23 18:32:37,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-23 18:32:37,210 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:37,210 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:37,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-23 18:32:37,210 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:37,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:37,211 INFO L85 PathProgramCache]: Analyzing trace with hash 747978235, now seen corresponding path program 1 times [2024-11-23 18:32:37,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:37,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105179136] [2024-11-23 18:32:37,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:37,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat