./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-19.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-19.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya --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 81c7729345d5d6e6cfdedd64c331a4f8f6005773af2c566c0c24cc964b2ec390 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:41:38,054 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:41:38,116 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 00:41:38,120 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:41:38,120 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:41:38,142 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:41:38,143 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:41:38,143 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:41:38,144 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:41:38,145 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:41:38,145 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:41:38,146 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:41:38,146 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:41:38,147 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:41:38,147 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:41:38,148 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:41:38,149 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:41:38,149 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:41:38,150 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:41:38,150 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:41:38,151 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:41:38,155 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:41:38,155 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:41:38,155 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:41:38,155 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:41:38,156 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:41:38,156 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:41:38,156 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:41:38,157 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:41:38,157 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:41:38,158 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:41:38,158 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:41:38,158 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:41:38,159 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:41:38,159 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:41:38,159 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:41:38,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:41:38,159 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:41:38,159 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:41:38,160 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:41:38,160 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:41:38,160 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:41:38,160 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81c7729345d5d6e6cfdedd64c331a4f8f6005773af2c566c0c24cc964b2ec390 [2023-11-29 00:41:38,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:41:38,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:41:38,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:41:38,403 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:41:38,404 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:41:38,405 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-19.i [2023-11-29 00:41:41,153 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:41:41,363 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:41:41,364 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-19.i [2023-11-29 00:41:41,373 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/data/0dd759be3/5cb6785e015e42e89fe4ced8fd8fcc8d/FLAGd01ae589a [2023-11-29 00:41:41,388 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/data/0dd759be3/5cb6785e015e42e89fe4ced8fd8fcc8d [2023-11-29 00:41:41,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:41:41,392 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:41:41,393 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:41:41,393 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:41:41,398 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:41:41,399 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:41:41" (1/1) ... [2023-11-29 00:41:41,400 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7079834c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:41, skipping insertion in model container [2023-11-29 00:41:41,400 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:41:41" (1/1) ... [2023-11-29 00:41:41,430 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:41:41,570 WARN L240 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_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-19.i[916,929] [2023-11-29 00:41:41,627 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:41:41,639 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:41:41,651 WARN L240 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_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-19.i[916,929] [2023-11-29 00:41:41,688 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:41:41,705 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:41:41,706 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:41 WrapperNode [2023-11-29 00:41:41,706 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:41:41,707 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:41:41,707 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:41:41,707 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:41:41,715 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:41" (1/1) ... [2023-11-29 00:41:41,728 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:41" (1/1) ... [2023-11-29 00:41:41,764 INFO L138 Inliner]: procedures = 26, calls = 157, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 407 [2023-11-29 00:41:41,764 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:41:41,765 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:41:41,765 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:41:41,765 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:41:41,776 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:41" (1/1) ... [2023-11-29 00:41:41,776 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:41" (1/1) ... [2023-11-29 00:41:41,782 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:41" (1/1) ... [2023-11-29 00:41:41,801 INFO L175 MemorySlicer]: Split 124 memory accesses to 6 slices as follows [2, 8, 43, 27, 26, 18]. 35 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 1, 3, 4, 2, 2]. The 15 writes are split as follows [0, 1, 4, 6, 2, 2]. [2023-11-29 00:41:41,801 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:41" (1/1) ... [2023-11-29 00:41:41,802 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:41" (1/1) ... [2023-11-29 00:41:41,821 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:41" (1/1) ... [2023-11-29 00:41:41,826 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:41" (1/1) ... [2023-11-29 00:41:41,829 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:41" (1/1) ... [2023-11-29 00:41:41,832 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:41" (1/1) ... [2023-11-29 00:41:41,838 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:41:41,839 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:41:41,839 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:41:41,839 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:41:41,840 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:41" (1/1) ... [2023-11-29 00:41:41,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:41:41,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:41:41,867 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:41:41,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:41:41,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:41:41,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 00:41:41,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 00:41:41,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 00:41:41,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 00:41:41,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 00:41:41,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-29 00:41:41,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 00:41:41,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 00:41:41,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 00:41:41,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 00:41:41,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 00:41:41,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-29 00:41:41,905 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 00:41:41,905 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 00:41:41,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:41:41,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 00:41:41,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 00:41:41,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 00:41:41,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 00:41:41,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 00:41:41,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:41:41,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:41:42,007 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:41:42,009 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:41:42,396 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:41:42,430 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:41:42,430 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 00:41:42,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:41:42 BoogieIcfgContainer [2023-11-29 00:41:42,431 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:41:42,434 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:41:42,434 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:41:42,437 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:41:42,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:41:41" (1/3) ... [2023-11-29 00:41:42,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@981824a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:41:42, skipping insertion in model container [2023-11-29 00:41:42,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:41" (2/3) ... [2023-11-29 00:41:42,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@981824a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:41:42, skipping insertion in model container [2023-11-29 00:41:42,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:41:42" (3/3) ... [2023-11-29 00:41:42,440 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-19.i [2023-11-29 00:41:42,459 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:41:42,459 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 00:41:42,504 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:41:42,511 INFO L357 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, mHoare=true, 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;@7bac868d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:41:42,511 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 00:41:42,515 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 73 states have (on average 1.4383561643835616) internal successors, (105), 74 states have internal predecessors, (105), 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) [2023-11-29 00:41:42,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-29 00:41:42,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:41:42,531 INFO L195 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] [2023-11-29 00:41:42,532 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:41:42,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:41:42,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1104151751, now seen corresponding path program 1 times [2023-11-29 00:41:42,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:41:42,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815136473] [2023-11-29 00:41:42,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:41:42,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:41:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:42,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:41:42,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815136473] [2023-11-29 00:41:42,796 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 00:41:42,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425083733] [2023-11-29 00:41:42,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:41:42,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:41:42,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:41:42,801 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:41:42,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:41:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:43,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 00:41:43,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:41:43,082 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2023-11-29 00:41:43,082 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:41:43,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425083733] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:41:43,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:41:43,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:41:43,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962009326] [2023-11-29 00:41:43,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:41:43,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 00:41:43,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:41:43,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 00:41:43,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:41:43,119 INFO L87 Difference]: Start difference. First operand has 93 states, 73 states have (on average 1.4383561643835616) internal successors, (105), 74 states have internal predecessors, (105), 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 23.5) internal successors, (47), 2 states have internal predecessors, (47), 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) [2023-11-29 00:41:43,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:41:43,155 INFO L93 Difference]: Finished difference Result 183 states and 293 transitions. [2023-11-29 00:41:43,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 00:41:43,157 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 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 127 [2023-11-29 00:41:43,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:41:43,163 INFO L225 Difference]: With dead ends: 183 [2023-11-29 00:41:43,164 INFO L226 Difference]: Without dead ends: 91 [2023-11-29 00:41:43,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:41:43,169 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:41:43,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 128 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:41:43,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-29 00:41:43,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-11-29 00:41:43,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 72 states have (on average 1.3611111111111112) internal successors, (98), 72 states have internal predecessors, (98), 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) [2023-11-29 00:41:43,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 132 transitions. [2023-11-29 00:41:43,208 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 132 transitions. Word has length 127 [2023-11-29 00:41:43,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:41:43,208 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 132 transitions. [2023-11-29 00:41:43,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 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) [2023-11-29 00:41:43,209 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 132 transitions. [2023-11-29 00:41:43,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-29 00:41:43,211 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:41:43,211 INFO L195 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] [2023-11-29 00:41:43,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:41:43,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:41:43,413 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:41:43,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:41:43,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1826147735, now seen corresponding path program 1 times [2023-11-29 00:41:43,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:41:43,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123901591] [2023-11-29 00:41:43,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:41:43,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:41:43,501 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:41:43,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [881034539] [2023-11-29 00:41:43,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:41:43,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:41:43,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:41:43,504 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:41:43,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:41:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:43,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:41:43,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:41:43,754 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-29 00:41:43,754 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:41:43,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:41:43,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123901591] [2023-11-29 00:41:43,755 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:41:43,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881034539] [2023-11-29 00:41:43,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881034539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:41:43,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:41:43,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:41:43,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062608054] [2023-11-29 00:41:43,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:41:43,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:41:43,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:41:43,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:41:43,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:41:43,759 INFO L87 Difference]: Start difference. First operand 91 states and 132 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2023-11-29 00:41:43,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:41:43,812 INFO L93 Difference]: Finished difference Result 185 states and 268 transitions. [2023-11-29 00:41:43,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:41:43,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 127 [2023-11-29 00:41:43,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:41:43,816 INFO L225 Difference]: With dead ends: 185 [2023-11-29 00:41:43,816 INFO L226 Difference]: Without dead ends: 95 [2023-11-29 00:41:43,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:41:43,818 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 3 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:41:43,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 372 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:41:43,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-11-29 00:41:43,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2023-11-29 00:41:43,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 74 states have (on average 1.3513513513513513) internal successors, (100), 74 states have internal predecessors, (100), 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) [2023-11-29 00:41:43,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 134 transitions. [2023-11-29 00:41:43,832 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 134 transitions. Word has length 127 [2023-11-29 00:41:43,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:41:43,834 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 134 transitions. [2023-11-29 00:41:43,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2023-11-29 00:41:43,835 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 134 transitions. [2023-11-29 00:41:43,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-29 00:41:43,837 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:41:43,837 INFO L195 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] [2023-11-29 00:41:43,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 00:41:44,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:41:44,044 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:41:44,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:41:44,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1826088153, now seen corresponding path program 1 times [2023-11-29 00:41:44,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:41:44,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228085020] [2023-11-29 00:41:44,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:41:44,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:41:44,100 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:41:44,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [380122479] [2023-11-29 00:41:44,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:41:44,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:41:44,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:41:44,102 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:41:44,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:41:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:44,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 00:41:44,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:41:44,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 68 treesize of output 55 [2023-11-29 00:41:44,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 17 [2023-11-29 00:41:44,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 15 [2023-11-29 00:41:44,599 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 159 treesize of output 119 [2023-11-29 00:41:44,604 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 119 treesize of output 83 [2023-11-29 00:41:44,648 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-11-29 00:41:44,649 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:41:44,814 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 57 treesize of output 53 [2023-11-29 00:41:44,827 INFO L349 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2023-11-29 00:41:44,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 1 [2023-11-29 00:41:44,887 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-29 00:41:44,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:41:44,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228085020] [2023-11-29 00:41:44,888 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:41:44,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380122479] [2023-11-29 00:41:44,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380122479] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:41:44,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:41:44,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 10 [2023-11-29 00:41:44,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511037346] [2023-11-29 00:41:44,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:41:44,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:41:44,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:41:44,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:41:44,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:41:44,892 INFO L87 Difference]: Start difference. First operand 93 states and 134 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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) [2023-11-29 00:41:45,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:41:45,313 INFO L93 Difference]: Finished difference Result 295 states and 419 transitions. [2023-11-29 00:41:45,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:41:45,314 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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 127 [2023-11-29 00:41:45,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:41:45,317 INFO L225 Difference]: With dead ends: 295 [2023-11-29 00:41:45,317 INFO L226 Difference]: Without dead ends: 203 [2023-11-29 00:41:45,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 243 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:41:45,320 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 220 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:41:45,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 779 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:41:45,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2023-11-29 00:41:45,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 162. [2023-11-29 00:41:45,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 129 states have (on average 1.317829457364341) internal successors, (170), 130 states have internal predecessors, (170), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 00:41:45,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 230 transitions. [2023-11-29 00:41:45,345 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 230 transitions. Word has length 127 [2023-11-29 00:41:45,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:41:45,346 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 230 transitions. [2023-11-29 00:41:45,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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) [2023-11-29 00:41:45,347 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 230 transitions. [2023-11-29 00:41:45,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-29 00:41:45,350 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:41:45,351 INFO L195 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] [2023-11-29 00:41:45,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 00:41:45,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:41:45,557 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:41:45,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:41:45,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1447810789, now seen corresponding path program 1 times [2023-11-29 00:41:45,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:41:45,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148103499] [2023-11-29 00:41:45,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:41:45,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:41:45,605 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:41:45,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2109777197] [2023-11-29 00:41:45,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:41:45,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:41:45,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:41:45,608 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:41:45,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 00:41:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:45,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 00:41:45,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:41:45,817 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 [2023-11-29 00:41:45,829 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-29 00:41:45,829 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:41:45,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:41:45,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148103499] [2023-11-29 00:41:45,830 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:41:45,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109777197] [2023-11-29 00:41:45,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109777197] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:41:45,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:41:45,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:41:45,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969785819] [2023-11-29 00:41:45,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:41:45,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:41:45,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:41:45,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:41:45,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:41:45,833 INFO L87 Difference]: Start difference. First operand 162 states and 230 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2023-11-29 00:41:45,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:41:45,914 INFO L93 Difference]: Finished difference Result 422 states and 593 transitions. [2023-11-29 00:41:45,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:41:45,915 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 127 [2023-11-29 00:41:45,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:41:45,919 INFO L225 Difference]: With dead ends: 422 [2023-11-29 00:41:45,919 INFO L226 Difference]: Without dead ends: 261 [2023-11-29 00:41:45,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:41:45,922 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 83 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:41:45,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 713 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:41:45,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-11-29 00:41:45,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 167. [2023-11-29 00:41:45,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 134 states have (on average 1.3208955223880596) internal successors, (177), 135 states have internal predecessors, (177), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 00:41:45,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 237 transitions. [2023-11-29 00:41:45,944 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 237 transitions. Word has length 127 [2023-11-29 00:41:45,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:41:45,945 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 237 transitions. [2023-11-29 00:41:45,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2023-11-29 00:41:45,945 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 237 transitions. [2023-11-29 00:41:45,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-29 00:41:45,948 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:41:45,948 INFO L195 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] [2023-11-29 00:41:45,954 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 00:41:46,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:41:46,151 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:41:46,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:41:46,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1428562368, now seen corresponding path program 1 times [2023-11-29 00:41:46,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:41:46,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390164606] [2023-11-29 00:41:46,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:41:46,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:41:46,188 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:41:46,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [164700411] [2023-11-29 00:41:46,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:41:46,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:41:46,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:41:46,190 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:41:46,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 00:41:46,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:46,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 00:41:46,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:41:46,431 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:41:46,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 23 [2023-11-29 00:41:46,486 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 30 treesize of output 12 [2023-11-29 00:41:46,509 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-29 00:41:46,509 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:41:46,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:41:46,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390164606] [2023-11-29 00:41:46,509 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:41:46,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164700411] [2023-11-29 00:41:46,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164700411] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:41:46,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:41:46,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:41:46,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405824820] [2023-11-29 00:41:46,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:41:46,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:41:46,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:41:46,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:41:46,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:41:46,512 INFO L87 Difference]: Start difference. First operand 167 states and 237 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 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) [2023-11-29 00:41:46,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:41:46,981 INFO L93 Difference]: Finished difference Result 441 states and 619 transitions. [2023-11-29 00:41:46,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:41:46,982 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 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 128 [2023-11-29 00:41:46,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:41:46,985 INFO L225 Difference]: With dead ends: 441 [2023-11-29 00:41:46,985 INFO L226 Difference]: Without dead ends: 275 [2023-11-29 00:41:46,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:41:46,988 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 161 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:41:46,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 694 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:41:46,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-11-29 00:41:47,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 271. [2023-11-29 00:41:47,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 218 states have (on average 1.2935779816513762) internal successors, (282), 221 states have internal predecessors, (282), 48 states have call successors, (48), 4 states have call predecessors, (48), 4 states have return successors, (48), 45 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-29 00:41:47,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 378 transitions. [2023-11-29 00:41:47,015 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 378 transitions. Word has length 128 [2023-11-29 00:41:47,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:41:47,016 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 378 transitions. [2023-11-29 00:41:47,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 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) [2023-11-29 00:41:47,016 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 378 transitions. [2023-11-29 00:41:47,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-29 00:41:47,018 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:41:47,018 INFO L195 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] [2023-11-29 00:41:47,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 00:41:47,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:41:47,219 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:41:47,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:41:47,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1177461186, now seen corresponding path program 1 times [2023-11-29 00:41:47,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:41:47,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189985744] [2023-11-29 00:41:47,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:41:47,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:41:47,257 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:41:47,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [60894246] [2023-11-29 00:41:47,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:41:47,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:41:47,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:41:47,259 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:41:47,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 00:41:47,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:47,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:41:47,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:41:47,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 27 treesize of output 11 [2023-11-29 00:41:47,627 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 59 treesize of output 43 [2023-11-29 00:41:47,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 59 treesize of output 45 [2023-11-29 00:41:47,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 69 [2023-11-29 00:41:47,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-11-29 00:41:47,763 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:41:47,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 29 [2023-11-29 00:41:47,779 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 132 proven. 42 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2023-11-29 00:41:47,779 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:41:47,806 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 57 treesize of output 41 [2023-11-29 00:41:48,049 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-11-29 00:41:48,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:41:48,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189985744] [2023-11-29 00:41:48,050 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:41:48,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60894246] [2023-11-29 00:41:48,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60894246] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:41:48,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:41:48,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2023-11-29 00:41:48,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172712911] [2023-11-29 00:41:48,051 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:41:48,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 00:41:48,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:41:48,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 00:41:48,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:41:48,053 INFO L87 Difference]: Start difference. First operand 271 states and 378 transitions. Second operand has 11 states, 9 states have (on average 6.777777777777778) internal successors, (61), 11 states have internal predecessors, (61), 4 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (32), 2 states have call predecessors, (32), 4 states have call successors, (32) [2023-11-29 00:41:48,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:41:48,606 INFO L93 Difference]: Finished difference Result 689 states and 932 transitions. [2023-11-29 00:41:48,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 00:41:48,607 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.777777777777778) internal successors, (61), 11 states have internal predecessors, (61), 4 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (32), 2 states have call predecessors, (32), 4 states have call successors, (32) Word has length 128 [2023-11-29 00:41:48,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:41:48,611 INFO L225 Difference]: With dead ends: 689 [2023-11-29 00:41:48,611 INFO L226 Difference]: Without dead ends: 419 [2023-11-29 00:41:48,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 242 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2023-11-29 00:41:48,613 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 416 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:41:48,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 408 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:41:48,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2023-11-29 00:41:48,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 342. [2023-11-29 00:41:48,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 277 states have (on average 1.263537906137184) internal successors, (350), 282 states have internal predecessors, (350), 52 states have call successors, (52), 12 states have call predecessors, (52), 12 states have return successors, (52), 47 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-29 00:41:48,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 454 transitions. [2023-11-29 00:41:48,648 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 454 transitions. Word has length 128 [2023-11-29 00:41:48,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:41:48,649 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 454 transitions. [2023-11-29 00:41:48,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.777777777777778) internal successors, (61), 11 states have internal predecessors, (61), 4 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (32), 2 states have call predecessors, (32), 4 states have call successors, (32) [2023-11-29 00:41:48,649 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 454 transitions. [2023-11-29 00:41:48,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-29 00:41:48,651 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:41:48,652 INFO L195 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] [2023-11-29 00:41:48,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 00:41:48,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 00:41:48,854 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:41:48,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:41:48,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1435626624, now seen corresponding path program 1 times [2023-11-29 00:41:48,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:41:48,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736139061] [2023-11-29 00:41:48,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:41:48,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:41:48,886 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:41:48,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1447683887] [2023-11-29 00:41:48,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:41:48,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:41:48,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:41:48,888 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:41:48,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 00:41:49,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:49,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-29 00:41:49,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:41:49,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 00:41:49,555 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:41:49,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2023-11-29 00:41:49,564 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:41:49,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 25 [2023-11-29 00:41:49,611 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 284 proven. 30 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-11-29 00:41:49,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:41:49,801 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-29 00:41:49,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:41:49,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736139061] [2023-11-29 00:41:49,802 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:41:49,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447683887] [2023-11-29 00:41:49,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447683887] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:41:49,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:41:49,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2023-11-29 00:41:49,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493555726] [2023-11-29 00:41:49,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:41:49,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:41:49,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:41:49,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:41:49,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:41:49,804 INFO L87 Difference]: Start difference. First operand 342 states and 454 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2023-11-29 00:41:50,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:41:50,077 INFO L93 Difference]: Finished difference Result 860 states and 1136 transitions. [2023-11-29 00:41:50,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:41:50,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 128 [2023-11-29 00:41:50,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:41:50,082 INFO L225 Difference]: With dead ends: 860 [2023-11-29 00:41:50,082 INFO L226 Difference]: Without dead ends: 527 [2023-11-29 00:41:50,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2023-11-29 00:41:50,084 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 215 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:41:50,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 415 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:41:50,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2023-11-29 00:41:50,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 334. [2023-11-29 00:41:50,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 270 states have (on average 1.2592592592592593) internal successors, (340), 274 states have internal predecessors, (340), 50 states have call successors, (50), 13 states have call predecessors, (50), 13 states have return successors, (50), 46 states have call predecessors, (50), 50 states have call successors, (50) [2023-11-29 00:41:50,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 440 transitions. [2023-11-29 00:41:50,119 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 440 transitions. Word has length 128 [2023-11-29 00:41:50,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:41:50,119 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 440 transitions. [2023-11-29 00:41:50,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2023-11-29 00:41:50,120 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 440 transitions. [2023-11-29 00:41:50,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-29 00:41:50,121 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:41:50,122 INFO L195 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] [2023-11-29 00:41:50,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 00:41:50,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:41:50,322 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:41:50,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:41:50,323 INFO L85 PathProgramCache]: Analyzing trace with hash 155762946, now seen corresponding path program 1 times [2023-11-29 00:41:50,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:41:50,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999592298] [2023-11-29 00:41:50,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:41:50,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:41:50,352 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:41:50,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1955681293] [2023-11-29 00:41:50,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:41:50,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:41:50,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:41:50,354 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:41:50,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 00:41:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:52,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 87 conjunts are in the unsatisfiable core [2023-11-29 00:41:52,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:41:52,174 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 15 treesize of output 7 [2023-11-29 00:41:52,245 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 15 treesize of output 1 [2023-11-29 00:41:52,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 27 treesize of output 11 [2023-11-29 00:41:52,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 00:41:54,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-29 00:41:54,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 47 [2023-11-29 00:41:54,289 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:41:54,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 90 [2023-11-29 00:41:54,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 163 treesize of output 137 [2023-11-29 00:41:54,810 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:41:54,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 137 treesize of output 155 [2023-11-29 00:41:55,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 30 treesize of output 9 [2023-11-29 00:41:55,482 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:41:55,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 294 treesize of output 254 [2023-11-29 00:41:58,681 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:41:58,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 305 treesize of output 249 [2023-11-29 00:42:03,239 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:42:03,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 242 treesize of output 218 [2023-11-29 00:42:06,633 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:42:06,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 224 treesize of output 108 [2023-11-29 00:42:10,614 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 406 proven. 39 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-29 00:42:10,614 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:42:25,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:42:25,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999592298] [2023-11-29 00:42:25,924 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:42:25,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955681293] [2023-11-29 00:42:25,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955681293] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:42:25,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:42:25,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2023-11-29 00:42:25,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372919447] [2023-11-29 00:42:25,925 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 00:42:25,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 00:42:25,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:42:25,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 00:42:25,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1525, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 00:42:25,927 INFO L87 Difference]: Start difference. First operand 334 states and 440 transitions. Second operand has 31 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 29 states have internal predecessors, (67), 8 states have call successors, (17), 5 states have call predecessors, (17), 8 states have return successors, (17), 6 states have call predecessors, (17), 8 states have call successors, (17) [2023-11-29 00:42:47,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 00:42:53,921 WARN L293 SmtUtils]: Spent 5.43s on a formula simplification. DAG size of input: 103 DAG size of output: 103 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:42:55,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 00:43:24,735 WARN L293 SmtUtils]: Spent 22.72s on a formula simplification. DAG size of input: 126 DAG size of output: 125 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:43:30,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 00:43:33,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 00:44:12,541 WARN L293 SmtUtils]: Spent 27.54s on a formula simplification. DAG size of input: 155 DAG size of output: 154 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:44:17,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 00:44:17,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 139 [2023-11-29 00:44:17,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1503 ImplicationChecksByTransitivity, 110.5s TimeCoverageRelationStatistics Valid=873, Invalid=5289, Unknown=0, NotChecked=0, Total=6162 [2023-11-29 00:44:17,706 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 275 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 126 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 1507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:44:17,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 273 Invalid, 1507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1377 Invalid, 3 Unknown, 0 Unchecked, 27.1s Time] [2023-11-29 00:44:17,712 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 00:44:17,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:44:17,907 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:665) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:269) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:365) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 36 more [2023-11-29 00:44:17,910 INFO L158 Benchmark]: Toolchain (without parser) took 156518.36ms. Allocated memory was 163.6MB in the beginning and 249.6MB in the end (delta: 86.0MB). Free memory was 129.8MB in the beginning and 77.2MB in the end (delta: 52.6MB). Peak memory consumption was 140.2MB. Max. memory is 16.1GB. [2023-11-29 00:44:17,910 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 163.6MB. Free memory is still 135.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:44:17,910 INFO L158 Benchmark]: CACSL2BoogieTranslator took 313.28ms. Allocated memory is still 163.6MB. Free memory was 129.2MB in the beginning and 115.3MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-29 00:44:17,911 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.53ms. Allocated memory is still 163.6MB. Free memory was 115.3MB in the beginning and 111.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 00:44:17,911 INFO L158 Benchmark]: Boogie Preprocessor took 72.74ms. Allocated memory is still 163.6MB. Free memory was 111.1MB in the beginning and 106.4MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 00:44:17,911 INFO L158 Benchmark]: RCFGBuilder took 592.73ms. Allocated memory is still 163.6MB. Free memory was 106.4MB in the beginning and 73.7MB in the end (delta: 32.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2023-11-29 00:44:17,911 INFO L158 Benchmark]: TraceAbstraction took 155475.39ms. Allocated memory was 163.6MB in the beginning and 249.6MB in the end (delta: 86.0MB). Free memory was 73.2MB in the beginning and 77.2MB in the end (delta: -4.1MB). Peak memory consumption was 83.5MB. Max. memory is 16.1GB. [2023-11-29 00:44:17,913 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 163.6MB. Free memory is still 135.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 313.28ms. Allocated memory is still 163.6MB. Free memory was 129.2MB in the beginning and 115.3MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.53ms. Allocated memory is still 163.6MB. Free memory was 115.3MB in the beginning and 111.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.74ms. Allocated memory is still 163.6MB. Free memory was 111.1MB in the beginning and 106.4MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 592.73ms. Allocated memory is still 163.6MB. Free memory was 106.4MB in the beginning and 73.7MB in the end (delta: 32.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 155475.39ms. Allocated memory was 163.6MB in the beginning and 249.6MB in the end (delta: 86.0MB). Free memory was 73.2MB in the beginning and 77.2MB in the end (delta: -4.1MB). Peak memory consumption was 83.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-19.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya --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 81c7729345d5d6e6cfdedd64c331a4f8f6005773af2c566c0c24cc964b2ec390 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:44:19,566 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:44:19,640 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-29 00:44:19,646 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:44:19,647 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:44:19,675 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:44:19,675 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:44:19,676 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:44:19,677 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:44:19,677 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:44:19,678 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:44:19,678 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:44:19,679 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:44:19,680 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:44:19,680 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:44:19,681 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:44:19,682 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:44:19,682 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:44:19,683 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:44:19,683 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:44:19,684 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:44:19,685 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:44:19,685 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:44:19,686 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 00:44:19,686 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 00:44:19,686 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 00:44:19,687 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:44:19,687 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:44:19,688 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:44:19,688 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:44:19,688 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:44:19,689 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:44:19,689 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:44:19,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:44:19,690 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:44:19,690 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:44:19,690 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:44:19,691 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 00:44:19,691 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 00:44:19,691 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:44:19,691 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:44:19,692 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:44:19,692 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:44:19,692 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:44:19,692 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 00:44:19,692 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81c7729345d5d6e6cfdedd64c331a4f8f6005773af2c566c0c24cc964b2ec390 [2023-11-29 00:44:19,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:44:19,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:44:19,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:44:19,994 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:44:19,995 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:44:19,996 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-19.i [2023-11-29 00:44:22,837 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:44:23,045 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:44:23,046 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-19.i [2023-11-29 00:44:23,056 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/data/62e0f34b9/1aec6e38c43d4d4d9c76e41984f1f0c7/FLAGda33d192f [2023-11-29 00:44:23,071 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/data/62e0f34b9/1aec6e38c43d4d4d9c76e41984f1f0c7 [2023-11-29 00:44:23,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:44:23,076 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:44:23,077 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:44:23,078 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:44:23,083 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:44:23,084 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:44:23" (1/1) ... [2023-11-29 00:44:23,085 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2472f5a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:23, skipping insertion in model container [2023-11-29 00:44:23,085 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:44:23" (1/1) ... [2023-11-29 00:44:23,115 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:44:23,269 WARN L240 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_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-19.i[916,929] [2023-11-29 00:44:23,330 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:44:23,349 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:44:23,365 WARN L240 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_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-19.i[916,929] [2023-11-29 00:44:23,416 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:44:23,440 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:44:23,440 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:23 WrapperNode [2023-11-29 00:44:23,440 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:44:23,442 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:44:23,442 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:44:23,442 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:44:23,450 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:23" (1/1) ... [2023-11-29 00:44:23,470 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:23" (1/1) ... [2023-11-29 00:44:23,516 INFO L138 Inliner]: procedures = 30, calls = 157, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 395 [2023-11-29 00:44:23,517 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:44:23,517 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:44:23,518 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:44:23,518 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:44:23,530 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:23" (1/1) ... [2023-11-29 00:44:23,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:23" (1/1) ... [2023-11-29 00:44:23,539 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:23" (1/1) ... [2023-11-29 00:44:23,572 INFO L175 MemorySlicer]: Split 124 memory accesses to 6 slices as follows [2, 8, 43, 27, 26, 18]. 35 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 1, 3, 4, 2, 2]. The 15 writes are split as follows [0, 1, 4, 6, 2, 2]. [2023-11-29 00:44:23,573 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:23" (1/1) ... [2023-11-29 00:44:23,573 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:23" (1/1) ... [2023-11-29 00:44:23,597 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:23" (1/1) ... [2023-11-29 00:44:23,602 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:23" (1/1) ... [2023-11-29 00:44:23,606 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:23" (1/1) ... [2023-11-29 00:44:23,610 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:23" (1/1) ... [2023-11-29 00:44:23,617 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:44:23,618 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:44:23,618 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:44:23,618 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:44:23,619 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:23" (1/1) ... [2023-11-29 00:44:23,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:44:23,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:44:23,645 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:44:23,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:44:23,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:44:23,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-11-29 00:44:23,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-11-29 00:44:23,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-11-29 00:44:23,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-11-29 00:44:23,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-11-29 00:44:23,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-11-29 00:44:23,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 00:44:23,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 00:44:23,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-29 00:44:23,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-29 00:44:23,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-11-29 00:44:23,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-11-29 00:44:23,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-11-29 00:44:23,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-11-29 00:44:23,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-11-29 00:44:23,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-11-29 00:44:23,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-11-29 00:44:23,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2023-11-29 00:44:23,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-29 00:44:23,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-29 00:44:23,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-29 00:44:23,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-29 00:44:23,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-11-29 00:44:23,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-11-29 00:44:23,681 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 00:44:23,681 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 00:44:23,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:44:23,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:44:23,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-11-29 00:44:23,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-11-29 00:44:23,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-11-29 00:44:23,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-11-29 00:44:23,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-11-29 00:44:23,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-11-29 00:44:23,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 00:44:23,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-29 00:44:23,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-29 00:44:23,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-29 00:44:23,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-11-29 00:44:23,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-11-29 00:44:23,817 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:44:23,820 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:44:24,506 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:44:24,554 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:44:24,555 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 00:44:24,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:44:24 BoogieIcfgContainer [2023-11-29 00:44:24,555 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:44:24,558 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:44:24,558 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:44:24,561 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:44:24,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:44:23" (1/3) ... [2023-11-29 00:44:24,562 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@416410e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:44:24, skipping insertion in model container [2023-11-29 00:44:24,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:23" (2/3) ... [2023-11-29 00:44:24,562 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@416410e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:44:24, skipping insertion in model container [2023-11-29 00:44:24,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:44:24" (3/3) ... [2023-11-29 00:44:24,564 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-19.i [2023-11-29 00:44:24,582 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:44:24,583 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 00:44:24,632 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:44:24,639 INFO L357 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, mHoare=true, 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;@3fdc085, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:44:24,639 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 00:44:24,643 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 70 states have (on average 1.4285714285714286) internal successors, (100), 71 states have internal predecessors, (100), 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) [2023-11-29 00:44:24,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 00:44:24,658 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:44:24,659 INFO L195 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] [2023-11-29 00:44:24,659 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:44:24,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:24,664 INFO L85 PathProgramCache]: Analyzing trace with hash -31477708, now seen corresponding path program 1 times [2023-11-29 00:44:24,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:24,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [905018576] [2023-11-29 00:44:24,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:24,679 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:24,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:24,682 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:44:24,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-29 00:44:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:25,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 00:44:25,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:25,059 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 252 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-11-29 00:44:25,059 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:44:25,060 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:25,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [905018576] [2023-11-29 00:44:25,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [905018576] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:25,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:25,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:44:25,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925385478] [2023-11-29 00:44:25,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:25,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 00:44:25,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:25,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 00:44:25,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:44:25,098 INFO L87 Difference]: Start difference. First operand has 90 states, 70 states have (on average 1.4285714285714286) internal successors, (100), 71 states have internal predecessors, (100), 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 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-29 00:44:25,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:44:25,147 INFO L93 Difference]: Finished difference Result 177 states and 283 transitions. [2023-11-29 00:44:25,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 00:44:25,149 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 124 [2023-11-29 00:44:25,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:44:25,158 INFO L225 Difference]: With dead ends: 177 [2023-11-29 00:44:25,158 INFO L226 Difference]: Without dead ends: 88 [2023-11-29 00:44:25,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:44:25,165 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:44:25,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 123 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:44:25,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-11-29 00:44:25,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-11-29 00:44:25,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 69 states have (on average 1.3478260869565217) internal successors, (93), 69 states have internal predecessors, (93), 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) [2023-11-29 00:44:25,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 127 transitions. [2023-11-29 00:44:25,219 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 127 transitions. Word has length 124 [2023-11-29 00:44:25,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:44:25,220 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 127 transitions. [2023-11-29 00:44:25,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-29 00:44:25,221 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 127 transitions. [2023-11-29 00:44:25,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 00:44:25,224 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:44:25,224 INFO L195 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] [2023-11-29 00:44:25,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:44:25,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:25,427 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:44:25,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:25,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1077529134, now seen corresponding path program 1 times [2023-11-29 00:44:25,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:25,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1938533928] [2023-11-29 00:44:25,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:25,429 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:25,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:25,431 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:44:25,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-29 00:44:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:25,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:44:25,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:25,776 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 19 treesize of output 15 [2023-11-29 00:44:25,857 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 60 treesize of output 48 [2023-11-29 00:44:25,862 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 48 treesize of output 30 [2023-11-29 00:44:25,910 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-29 00:44:25,910 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:44:25,911 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:25,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1938533928] [2023-11-29 00:44:25,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1938533928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:25,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:25,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:44:25,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101322951] [2023-11-29 00:44:25,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:25,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:44:25,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:25,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:44:25,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:44:25,916 INFO L87 Difference]: Start difference. First operand 88 states and 127 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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) [2023-11-29 00:44:26,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:44:26,761 INFO L93 Difference]: Finished difference Result 277 states and 396 transitions. [2023-11-29 00:44:26,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:44:26,762 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 124 [2023-11-29 00:44:26,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:44:26,765 INFO L225 Difference]: With dead ends: 277 [2023-11-29 00:44:26,765 INFO L226 Difference]: Without dead ends: 190 [2023-11-29 00:44:26,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:44:26,767 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 219 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 00:44:26,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 754 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 00:44:26,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-11-29 00:44:26,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 153. [2023-11-29 00:44:26,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 120 states have (on average 1.3166666666666667) internal successors, (158), 121 states have internal predecessors, (158), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 00:44:26,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 218 transitions. [2023-11-29 00:44:26,791 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 218 transitions. Word has length 124 [2023-11-29 00:44:26,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:44:26,792 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 218 transitions. [2023-11-29 00:44:26,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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) [2023-11-29 00:44:26,793 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 218 transitions. [2023-11-29 00:44:26,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 00:44:26,795 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:44:26,796 INFO L195 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] [2023-11-29 00:44:26,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-29 00:44:26,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:26,996 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:44:26,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:26,997 INFO L85 PathProgramCache]: Analyzing trace with hash -2088646384, now seen corresponding path program 1 times [2023-11-29 00:44:26,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:26,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1514465115] [2023-11-29 00:44:26,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:26,998 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:26,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:26,999 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:44:27,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-29 00:44:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:27,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:44:27,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:27,642 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 78 proven. 45 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2023-11-29 00:44:27,642 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:44:27,753 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-29 00:44:27,754 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:27,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1514465115] [2023-11-29 00:44:27,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1514465115] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:44:27,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:44:27,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2023-11-29 00:44:27,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274742212] [2023-11-29 00:44:27,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:27,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:44:27,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:27,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:44:27,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:44:27,756 INFO L87 Difference]: Start difference. First operand 153 states and 218 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) [2023-11-29 00:44:27,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:44:27,956 INFO L93 Difference]: Finished difference Result 394 states and 558 transitions. [2023-11-29 00:44:27,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:44:27,957 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 124 [2023-11-29 00:44:27,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:44:27,961 INFO L225 Difference]: With dead ends: 394 [2023-11-29 00:44:27,961 INFO L226 Difference]: Without dead ends: 242 [2023-11-29 00:44:27,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:44:27,965 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 138 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:44:27,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 493 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:44:27,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2023-11-29 00:44:27,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 156. [2023-11-29 00:44:27,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 123 states have (on average 1.3170731707317074) internal successors, (162), 124 states have internal predecessors, (162), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 00:44:27,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 222 transitions. [2023-11-29 00:44:27,988 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 222 transitions. Word has length 124 [2023-11-29 00:44:27,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:44:27,989 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 222 transitions. [2023-11-29 00:44:27,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) [2023-11-29 00:44:27,990 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 222 transitions. [2023-11-29 00:44:27,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-29 00:44:27,993 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:44:27,993 INFO L195 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] [2023-11-29 00:44:27,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-29 00:44:28,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:28,199 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:44:28,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:28,200 INFO L85 PathProgramCache]: Analyzing trace with hash 301930728, now seen corresponding path program 1 times [2023-11-29 00:44:28,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:28,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1411053576] [2023-11-29 00:44:28,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:28,201 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:28,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:28,202 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:44:28,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-29 00:44:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:28,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 51 conjunts are in the unsatisfiable core [2023-11-29 00:44:28,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:28,537 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 9 treesize of output 3 [2023-11-29 00:44:31,257 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 21 treesize of output 17 [2023-11-29 00:44:31,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 76 treesize of output 57 [2023-11-29 00:44:32,279 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:44:32,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 58 [2023-11-29 00:44:32,292 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 58 treesize of output 40 [2023-11-29 00:44:32,635 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 377 proven. 66 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-11-29 00:44:32,635 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:44:35,013 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-29 00:44:35,013 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:35,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1411053576] [2023-11-29 00:44:35,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1411053576] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:44:35,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:44:35,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [27] total 37 [2023-11-29 00:44:35,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767982713] [2023-11-29 00:44:35,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:35,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 00:44:35,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:35,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 00:44:35,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1182, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 00:44:35,017 INFO L87 Difference]: Start difference. First operand 156 states and 222 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 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) [2023-11-29 00:44:43,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:44:43,782 INFO L93 Difference]: Finished difference Result 586 states and 820 transitions. [2023-11-29 00:44:43,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-29 00:44:43,784 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 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 125 [2023-11-29 00:44:43,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:44:43,788 INFO L225 Difference]: With dead ends: 586 [2023-11-29 00:44:43,788 INFO L226 Difference]: Without dead ends: 431 [2023-11-29 00:44:43,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1129 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=422, Invalid=3238, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 00:44:43,791 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 717 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:44:43,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 1000 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-29 00:44:43,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2023-11-29 00:44:43,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 199. [2023-11-29 00:44:43,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 162 states have (on average 1.3209876543209877) internal successors, (214), 164 states have internal predecessors, (214), 32 states have call successors, (32), 4 states have call predecessors, (32), 4 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-29 00:44:43,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 278 transitions. [2023-11-29 00:44:43,818 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 278 transitions. Word has length 125 [2023-11-29 00:44:43,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:44:43,819 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 278 transitions. [2023-11-29 00:44:43,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 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) [2023-11-29 00:44:43,819 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 278 transitions. [2023-11-29 00:44:43,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-29 00:44:43,822 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:44:43,822 INFO L195 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] [2023-11-29 00:44:43,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-29 00:44:44,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:44,025 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:44:44,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:44,026 INFO L85 PathProgramCache]: Analyzing trace with hash 560096166, now seen corresponding path program 1 times [2023-11-29 00:44:44,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:44,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1303664333] [2023-11-29 00:44:44,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:44,027 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:44,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:44,028 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:44:44,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-29 00:44:44,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:44,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-29 00:44:44,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:44,378 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 9 treesize of output 3 [2023-11-29 00:44:46,842 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 61 treesize of output 37 [2023-11-29 00:44:46,850 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 15 treesize of output 11 [2023-11-29 00:44:47,596 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:44:47,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 52 [2023-11-29 00:44:47,604 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 52 treesize of output 34 [2023-11-29 00:44:47,837 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 377 proven. 66 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-11-29 00:44:47,837 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:44:48,759 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-29 00:44:48,759 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:48,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1303664333] [2023-11-29 00:44:48,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1303664333] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:44:48,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:44:48,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [26] total 31 [2023-11-29 00:44:48,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002377985] [2023-11-29 00:44:48,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:48,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:44:48,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:48,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:44:48,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2023-11-29 00:44:48,762 INFO L87 Difference]: Start difference. First operand 199 states and 278 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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) [2023-11-29 00:44:50,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:44:50,253 INFO L93 Difference]: Finished difference Result 474 states and 658 transitions. [2023-11-29 00:44:50,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:44:50,254 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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 125 [2023-11-29 00:44:50,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:44:50,256 INFO L225 Difference]: With dead ends: 474 [2023-11-29 00:44:50,256 INFO L226 Difference]: Without dead ends: 276 [2023-11-29 00:44:50,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=140, Invalid=916, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 00:44:50,258 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 173 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:44:50,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 506 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 00:44:50,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-11-29 00:44:50,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 219. [2023-11-29 00:44:50,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 173 states have (on average 1.283236994219653) internal successors, (222), 175 states have internal predecessors, (222), 39 states have call successors, (39), 6 states have call predecessors, (39), 6 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-29 00:44:50,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 300 transitions. [2023-11-29 00:44:50,274 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 300 transitions. Word has length 125 [2023-11-29 00:44:50,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:44:50,274 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 300 transitions. [2023-11-29 00:44:50,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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) [2023-11-29 00:44:50,274 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 300 transitions. [2023-11-29 00:44:50,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-29 00:44:50,276 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:44:50,276 INFO L195 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] [2023-11-29 00:44:50,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-29 00:44:50,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:50,476 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:44:50,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:50,477 INFO L85 PathProgramCache]: Analyzing trace with hash 815474119, now seen corresponding path program 1 times [2023-11-29 00:44:50,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:50,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1554182115] [2023-11-29 00:44:50,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:50,478 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:50,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:50,479 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:44:50,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-29 00:44:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:50,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-29 00:44:50,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:50,826 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 9 treesize of output 3 [2023-11-29 00:44:53,061 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 21 treesize of output 17 [2023-11-29 00:44:53,798 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:44:53,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 33 [2023-11-29 00:44:54,494 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:44:54,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 44 [2023-11-29 00:44:54,507 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:44:54,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 36 [2023-11-29 00:44:54,519 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 41 treesize of output 23 [2023-11-29 00:44:54,729 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 377 proven. 66 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-11-29 00:44:54,730 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:44:56,262 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-29 00:44:56,262 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:56,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1554182115] [2023-11-29 00:44:56,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1554182115] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:44:56,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:44:56,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [27] total 33 [2023-11-29 00:44:56,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514100545] [2023-11-29 00:44:56,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:56,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:44:56,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:56,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:44:56,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=914, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 00:44:56,265 INFO L87 Difference]: Start difference. First operand 219 states and 300 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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) [2023-11-29 00:44:58,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:44:58,628 INFO L93 Difference]: Finished difference Result 551 states and 758 transitions. [2023-11-29 00:44:58,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:44:58,630 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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 126 [2023-11-29 00:44:58,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:44:58,634 INFO L225 Difference]: With dead ends: 551 [2023-11-29 00:44:58,634 INFO L226 Difference]: Without dead ends: 333 [2023-11-29 00:44:58,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 00:44:58,636 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 206 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:44:58,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 550 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 00:44:58,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2023-11-29 00:44:58,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 271. [2023-11-29 00:44:58,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 215 states have (on average 1.2883720930232558) internal successors, (277), 218 states have internal predecessors, (277), 48 states have call successors, (48), 7 states have call predecessors, (48), 7 states have return successors, (48), 45 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-29 00:44:58,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 373 transitions. [2023-11-29 00:44:58,659 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 373 transitions. Word has length 126 [2023-11-29 00:44:58,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:44:58,659 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 373 transitions. [2023-11-29 00:44:58,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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) [2023-11-29 00:44:58,660 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 373 transitions. [2023-11-29 00:44:58,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-29 00:44:58,661 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:44:58,661 INFO L195 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] [2023-11-29 00:44:58,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-29 00:44:58,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:58,862 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:44:58,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:58,862 INFO L85 PathProgramCache]: Analyzing trace with hash -205594235, now seen corresponding path program 1 times [2023-11-29 00:44:58,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:58,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14184923] [2023-11-29 00:44:58,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:58,863 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:58,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:58,864 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:44:58,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-29 00:44:59,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:59,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-29 00:44:59,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:59,231 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 9 treesize of output 3 [2023-11-29 00:45:01,499 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 21 treesize of output 17 [2023-11-29 00:45:02,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 61 treesize of output 48 [2023-11-29 00:45:02,898 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:45:02,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 44 [2023-11-29 00:45:02,908 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 57 treesize of output 39 [2023-11-29 00:45:03,208 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 377 proven. 66 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-11-29 00:45:03,208 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:45:05,286 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-29 00:45:05,287 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:45:05,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14184923] [2023-11-29 00:45:05,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [14184923] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:45:05,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:45:05,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [27] total 37 [2023-11-29 00:45:05,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073100611] [2023-11-29 00:45:05,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:45:05,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 00:45:05,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:45:05,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 00:45:05,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1176, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 00:45:05,289 INFO L87 Difference]: Start difference. First operand 271 states and 373 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 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) [2023-11-29 00:45:13,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:45:13,202 INFO L93 Difference]: Finished difference Result 737 states and 1007 transitions. [2023-11-29 00:45:13,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 00:45:13,203 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 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 126 [2023-11-29 00:45:13,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:45:13,206 INFO L225 Difference]: With dead ends: 737 [2023-11-29 00:45:13,206 INFO L226 Difference]: Without dead ends: 467 [2023-11-29 00:45:13,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1016 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=359, Invalid=2947, Unknown=0, NotChecked=0, Total=3306 [2023-11-29 00:45:13,209 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 662 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:45:13,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 1390 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-11-29 00:45:13,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-11-29 00:45:13,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 275. [2023-11-29 00:45:13,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 218 states have (on average 1.275229357798165) internal successors, (278), 221 states have internal predecessors, (278), 48 states have call successors, (48), 8 states have call predecessors, (48), 8 states have return successors, (48), 45 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-29 00:45:13,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 374 transitions. [2023-11-29 00:45:13,237 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 374 transitions. Word has length 126 [2023-11-29 00:45:13,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:45:13,237 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 374 transitions. [2023-11-29 00:45:13,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 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) [2023-11-29 00:45:13,238 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 374 transitions. [2023-11-29 00:45:13,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-29 00:45:13,239 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:45:13,239 INFO L195 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] [2023-11-29 00:45:13,244 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-29 00:45:13,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:13,440 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:45:13,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:45:13,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1144510573, now seen corresponding path program 1 times [2023-11-29 00:45:13,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:45:13,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2085451924] [2023-11-29 00:45:13,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:45:13,441 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:13,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:45:13,442 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:45:13,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-29 00:45:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:45:13,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 00:45:13,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:45:13,764 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 21 treesize of output 17 [2023-11-29 00:45:13,815 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 28 treesize of output 16 [2023-11-29 00:45:13,854 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 31 treesize of output 13 [2023-11-29 00:45:13,927 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-11-29 00:45:13,927 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:45:13,927 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:45:13,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2085451924] [2023-11-29 00:45:13,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2085451924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:45:13,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:45:13,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 00:45:13,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935648561] [2023-11-29 00:45:13,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:45:13,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:45:13,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:45:13,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:45:13,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:45:13,929 INFO L87 Difference]: Start difference. First operand 275 states and 374 transitions. Second operand has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-29 00:45:16,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:45:16,489 INFO L93 Difference]: Finished difference Result 676 states and 908 transitions. [2023-11-29 00:45:16,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 00:45:16,490 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 127 [2023-11-29 00:45:16,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:45:16,493 INFO L225 Difference]: With dead ends: 676 [2023-11-29 00:45:16,493 INFO L226 Difference]: Without dead ends: 402 [2023-11-29 00:45:16,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2023-11-29 00:45:16,495 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 303 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:45:16,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 1204 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 00:45:16,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2023-11-29 00:45:16,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 282. [2023-11-29 00:45:16,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 224 states have (on average 1.2767857142857142) internal successors, (286), 227 states have internal predecessors, (286), 48 states have call successors, (48), 9 states have call predecessors, (48), 9 states have return successors, (48), 45 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-29 00:45:16,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 382 transitions. [2023-11-29 00:45:16,535 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 382 transitions. Word has length 127 [2023-11-29 00:45:16,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:45:16,536 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 382 transitions. [2023-11-29 00:45:16,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-29 00:45:16,536 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 382 transitions. [2023-11-29 00:45:16,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-29 00:45:16,538 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:45:16,538 INFO L195 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] [2023-11-29 00:45:16,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-29 00:45:16,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:16,750 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:45:16,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:45:16,750 INFO L85 PathProgramCache]: Analyzing trace with hash -2145820690, now seen corresponding path program 1 times [2023-11-29 00:45:16,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:45:16,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [927057743] [2023-11-29 00:45:16,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:45:16,751 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:16,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:45:16,752 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:45:16,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-29 00:45:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:45:17,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-29 00:45:17,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:45:17,099 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 9 treesize of output 3 [2023-11-29 00:45:19,512 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 61 treesize of output 37 [2023-11-29 00:45:19,521 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 15 treesize of output 11 [2023-11-29 00:45:20,361 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:45:20,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 52 [2023-11-29 00:45:20,375 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:45:20,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 31 [2023-11-29 00:45:20,386 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 42 treesize of output 24 [2023-11-29 00:45:20,595 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 377 proven. 66 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-11-29 00:45:20,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:45:21,457 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-29 00:45:21,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:45:21,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [927057743] [2023-11-29 00:45:21,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [927057743] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:45:21,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:45:21,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [26] total 30 [2023-11-29 00:45:21,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813100304] [2023-11-29 00:45:21,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:45:21,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:45:21,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:45:21,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:45:21,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2023-11-29 00:45:21,459 INFO L87 Difference]: Start difference. First operand 282 states and 382 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2023-11-29 00:45:22,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:45:22,239 INFO L93 Difference]: Finished difference Result 574 states and 775 transitions. [2023-11-29 00:45:22,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:45:22,241 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 127 [2023-11-29 00:45:22,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:45:22,242 INFO L225 Difference]: With dead ends: 574 [2023-11-29 00:45:22,242 INFO L226 Difference]: Without dead ends: 293 [2023-11-29 00:45:22,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=131, Invalid=799, Unknown=0, NotChecked=0, Total=930 [2023-11-29 00:45:22,244 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 158 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 00:45:22,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 320 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 00:45:22,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-11-29 00:45:22,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 268. [2023-11-29 00:45:22,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 210 states have (on average 1.2571428571428571) internal successors, (264), 213 states have internal predecessors, (264), 48 states have call successors, (48), 9 states have call predecessors, (48), 9 states have return successors, (48), 45 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-29 00:45:22,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 360 transitions. [2023-11-29 00:45:22,278 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 360 transitions. Word has length 127 [2023-11-29 00:45:22,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:45:22,279 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 360 transitions. [2023-11-29 00:45:22,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2023-11-29 00:45:22,279 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 360 transitions. [2023-11-29 00:45:22,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-29 00:45:22,280 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:45:22,281 INFO L195 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] [2023-11-29 00:45:22,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-29 00:45:22,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:22,482 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:45:22,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:45:22,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1850386739, now seen corresponding path program 1 times [2023-11-29 00:45:22,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:45:22,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1107557617] [2023-11-29 00:45:22,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:45:22,482 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:22,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:45:22,483 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:45:22,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-29 00:45:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:45:22,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-29 00:45:22,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:45:22,813 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 9 treesize of output 3 [2023-11-29 00:45:24,324 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 61 treesize of output 37 [2023-11-29 00:45:24,331 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 15 treesize of output 11 [2023-11-29 00:45:25,164 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:45:25,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 46 [2023-11-29 00:45:25,175 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:45:25,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 30 [2023-11-29 00:45:25,181 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 41 treesize of output 23 [2023-11-29 00:45:25,348 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 266 proven. 60 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2023-11-29 00:45:25,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:45:26,110 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-29 00:45:26,110 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:45:26,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1107557617] [2023-11-29 00:45:26,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1107557617] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:45:26,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:45:26,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [22] total 26 [2023-11-29 00:45:26,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139081336] [2023-11-29 00:45:26,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:45:26,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:45:26,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:45:26,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:45:26,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2023-11-29 00:45:26,112 INFO L87 Difference]: Start difference. First operand 268 states and 360 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2023-11-29 00:45:26,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:45:26,965 INFO L93 Difference]: Finished difference Result 490 states and 655 transitions. [2023-11-29 00:45:26,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:45:26,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 128 [2023-11-29 00:45:26,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:45:26,968 INFO L225 Difference]: With dead ends: 490 [2023-11-29 00:45:26,968 INFO L226 Difference]: Without dead ends: 223 [2023-11-29 00:45:26,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2023-11-29 00:45:26,970 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 163 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 00:45:26,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 374 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 00:45:26,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2023-11-29 00:45:26,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 216. [2023-11-29 00:45:26,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 168 states have (on average 1.244047619047619) internal successors, (209), 170 states have internal predecessors, (209), 39 states have call successors, (39), 8 states have call predecessors, (39), 8 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-29 00:45:26,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 287 transitions. [2023-11-29 00:45:26,997 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 287 transitions. Word has length 128 [2023-11-29 00:45:26,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:45:26,997 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 287 transitions. [2023-11-29 00:45:26,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2023-11-29 00:45:26,998 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 287 transitions. [2023-11-29 00:45:26,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-29 00:45:26,999 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:45:26,999 INFO L195 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] [2023-11-29 00:45:27,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-29 00:45:27,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:27,200 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:45:27,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:45:27,200 INFO L85 PathProgramCache]: Analyzing trace with hash 635703707, now seen corresponding path program 1 times [2023-11-29 00:45:27,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:45:27,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1691262377] [2023-11-29 00:45:27,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:45:27,201 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:27,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:45:27,202 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:45:27,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-29 00:45:27,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:45:27,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 00:45:27,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:45:27,453 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 12 treesize of output 8 [2023-11-29 00:45:27,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 23 treesize of output 22 [2023-11-29 00:45:27,746 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 15 treesize of output 1 [2023-11-29 00:45:27,833 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 14 treesize of output 10 [2023-11-29 00:45:28,253 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 28 treesize of output 24 [2023-11-29 00:45:28,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 46 treesize of output 45 [2023-11-29 00:45:28,409 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:45:28,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2023-11-29 00:45:28,614 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:45:28,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 82 [2023-11-29 00:45:28,628 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 15 treesize of output 11 [2023-11-29 00:45:29,122 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:45:29,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 72 [2023-11-29 00:45:29,137 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:45:29,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 56 [2023-11-29 00:45:29,275 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 392 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-11-29 00:45:29,275 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:45:29,275 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:45:29,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1691262377] [2023-11-29 00:45:29,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1691262377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:45:29,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:45:29,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-29 00:45:29,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367965089] [2023-11-29 00:45:29,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:45:29,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 00:45:29,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:45:29,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 00:45:29,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:45:29,277 INFO L87 Difference]: Start difference. First operand 216 states and 287 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 4 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-29 00:45:34,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:45:34,661 INFO L93 Difference]: Finished difference Result 775 states and 1030 transitions. [2023-11-29 00:45:34,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-29 00:45:34,663 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 4 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 128 [2023-11-29 00:45:34,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:45:34,666 INFO L225 Difference]: With dead ends: 775 [2023-11-29 00:45:34,666 INFO L226 Difference]: Without dead ends: 560 [2023-11-29 00:45:34,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=333, Invalid=723, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 00:45:34,668 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 563 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:45:34,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 657 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-29 00:45:34,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2023-11-29 00:45:34,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 302. [2023-11-29 00:45:34,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 251 states have (on average 1.2669322709163346) internal successors, (318), 254 states have internal predecessors, (318), 41 states have call successors, (41), 9 states have call predecessors, (41), 9 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-29 00:45:34,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 400 transitions. [2023-11-29 00:45:34,718 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 400 transitions. Word has length 128 [2023-11-29 00:45:34,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:45:34,719 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 400 transitions. [2023-11-29 00:45:34,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 4 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-29 00:45:34,719 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 400 transitions. [2023-11-29 00:45:34,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-29 00:45:34,721 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:45:34,721 INFO L195 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] [2023-11-29 00:45:34,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-11-29 00:45:34,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:34,922 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:45:34,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:45:34,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1169734627, now seen corresponding path program 1 times [2023-11-29 00:45:34,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:45:34,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [241636489] [2023-11-29 00:45:34,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:45:34,923 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:34,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:45:34,923 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:45:34,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-29 00:45:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:45:35,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 00:45:35,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:45:35,217 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 19 treesize of output 1 [2023-11-29 00:45:35,924 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 19 treesize of output 15 [2023-11-29 00:45:35,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 39 treesize of output 32 [2023-11-29 00:45:36,082 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:45:36,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 21 [2023-11-29 00:45:36,131 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 246 proven. 33 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-11-29 00:45:36,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:45:36,312 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-29 00:45:36,313 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:45:36,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [241636489] [2023-11-29 00:45:36,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [241636489] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:45:36,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:45:36,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2023-11-29 00:45:36,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397847250] [2023-11-29 00:45:36,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:45:36,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:45:36,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:45:36,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:45:36,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:45:36,315 INFO L87 Difference]: Start difference. First operand 302 states and 400 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2023-11-29 00:45:36,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:45:36,791 INFO L93 Difference]: Finished difference Result 775 states and 1029 transitions. [2023-11-29 00:45:36,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:45:36,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 128 [2023-11-29 00:45:36,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:45:36,799 INFO L225 Difference]: With dead ends: 775 [2023-11-29 00:45:36,799 INFO L226 Difference]: Without dead ends: 474 [2023-11-29 00:45:36,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:45:36,801 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 131 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:45:36,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 416 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:45:36,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2023-11-29 00:45:36,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 348. [2023-11-29 00:45:36,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 297 states have (on average 1.2828282828282829) internal successors, (381), 300 states have internal predecessors, (381), 41 states have call successors, (41), 9 states have call predecessors, (41), 9 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-29 00:45:36,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 463 transitions. [2023-11-29 00:45:36,841 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 463 transitions. Word has length 128 [2023-11-29 00:45:36,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:45:36,841 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 463 transitions. [2023-11-29 00:45:36,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2023-11-29 00:45:36,842 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 463 transitions. [2023-11-29 00:45:36,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-29 00:45:36,843 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:45:36,843 INFO L195 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] [2023-11-29 00:45:36,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-11-29 00:45:37,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:37,043 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:45:37,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:45:37,044 INFO L85 PathProgramCache]: Analyzing trace with hash -606507047, now seen corresponding path program 1 times [2023-11-29 00:45:37,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:45:37,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1182444966] [2023-11-29 00:45:37,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:45:37,044 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:37,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:45:37,045 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:45:37,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-29 00:45:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:45:37,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 00:45:37,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:45:37,336 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 15 treesize of output 1 [2023-11-29 00:45:37,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 24 treesize of output 23 [2023-11-29 00:45:38,016 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:45:38,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 14 [2023-11-29 00:45:38,108 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 184 proven. 42 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-11-29 00:45:38,108 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:45:38,380 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-11-29 00:45:38,381 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:45:38,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1182444966] [2023-11-29 00:45:38,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1182444966] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:45:38,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:45:38,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-11-29 00:45:38,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679000758] [2023-11-29 00:45:38,381 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:45:38,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:45:38,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:45:38,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:45:38,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:45:38,383 INFO L87 Difference]: Start difference. First operand 348 states and 463 transitions. Second operand has 12 states, 10 states have (on average 8.1) internal successors, (81), 12 states have internal predecessors, (81), 5 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (32), 3 states have call predecessors, (32), 5 states have call successors, (32) [2023-11-29 00:45:39,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:45:39,347 INFO L93 Difference]: Finished difference Result 737 states and 961 transitions. [2023-11-29 00:45:39,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 00:45:39,348 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 8.1) internal successors, (81), 12 states have internal predecessors, (81), 5 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (32), 3 states have call predecessors, (32), 5 states have call successors, (32) Word has length 129 [2023-11-29 00:45:39,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:45:39,350 INFO L225 Difference]: With dead ends: 737 [2023-11-29 00:45:39,351 INFO L226 Difference]: Without dead ends: 390 [2023-11-29 00:45:39,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 245 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2023-11-29 00:45:39,352 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 144 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 00:45:39,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 295 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 00:45:39,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2023-11-29 00:45:39,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 372. [2023-11-29 00:45:39,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 315 states have (on average 1.2571428571428571) internal successors, (396), 318 states have internal predecessors, (396), 41 states have call successors, (41), 15 states have call predecessors, (41), 15 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-29 00:45:39,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 478 transitions. [2023-11-29 00:45:39,408 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 478 transitions. Word has length 129 [2023-11-29 00:45:39,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:45:39,408 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 478 transitions. [2023-11-29 00:45:39,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 8.1) internal successors, (81), 12 states have internal predecessors, (81), 5 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (32), 3 states have call predecessors, (32), 5 states have call successors, (32) [2023-11-29 00:45:39,409 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 478 transitions. [2023-11-29 00:45:39,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-29 00:45:39,410 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:45:39,410 INFO L195 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] [2023-11-29 00:45:39,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-11-29 00:45:39,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:39,611 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:45:39,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:45:39,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1999516507, now seen corresponding path program 1 times [2023-11-29 00:45:39,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:45:39,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099215157] [2023-11-29 00:45:39,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:45:39,612 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:39,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:45:39,613 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:45:39,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-29 00:45:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:45:39,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:45:39,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:45:39,909 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 12 treesize of output 8 [2023-11-29 00:45:40,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 37 treesize of output 17 [2023-11-29 00:45:40,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 37 treesize of output 17 [2023-11-29 00:45:40,652 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 26 treesize of output 14 [2023-11-29 00:45:40,680 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 134 proven. 42 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2023-11-29 00:45:40,681 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:45:40,931 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-11-29 00:45:40,931 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:45:40,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099215157] [2023-11-29 00:45:40,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099215157] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:45:40,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:45:40,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2023-11-29 00:45:40,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933492975] [2023-11-29 00:45:40,932 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:45:40,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 00:45:40,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:45:40,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 00:45:40,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:45:40,933 INFO L87 Difference]: Start difference. First operand 372 states and 478 transitions. Second operand has 13 states, 11 states have (on average 7.636363636363637) internal successors, (84), 12 states have internal predecessors, (84), 5 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (32), 3 states have call predecessors, (32), 5 states have call successors, (32) [2023-11-29 00:45:42,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:45:42,164 INFO L93 Difference]: Finished difference Result 761 states and 973 transitions. [2023-11-29 00:45:42,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:45:42,165 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 7.636363636363637) internal successors, (84), 12 states have internal predecessors, (84), 5 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (32), 3 states have call predecessors, (32), 5 states have call successors, (32) Word has length 129 [2023-11-29 00:45:42,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:45:42,168 INFO L225 Difference]: With dead ends: 761 [2023-11-29 00:45:42,168 INFO L226 Difference]: Without dead ends: 390 [2023-11-29 00:45:42,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 243 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2023-11-29 00:45:42,170 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 106 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:45:42,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 345 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 00:45:42,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2023-11-29 00:45:42,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 372. [2023-11-29 00:45:42,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 315 states have (on average 1.2380952380952381) internal successors, (390), 318 states have internal predecessors, (390), 41 states have call successors, (41), 15 states have call predecessors, (41), 15 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-29 00:45:42,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 472 transitions. [2023-11-29 00:45:42,221 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 472 transitions. Word has length 129 [2023-11-29 00:45:42,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:45:42,221 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 472 transitions. [2023-11-29 00:45:42,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 7.636363636363637) internal successors, (84), 12 states have internal predecessors, (84), 5 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (32), 3 states have call predecessors, (32), 5 states have call successors, (32) [2023-11-29 00:45:42,221 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 472 transitions. [2023-11-29 00:45:42,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-29 00:45:42,222 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:45:42,222 INFO L195 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] [2023-11-29 00:45:42,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-11-29 00:45:42,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:42,423 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:45:42,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:45:42,423 INFO L85 PathProgramCache]: Analyzing trace with hash 988399257, now seen corresponding path program 1 times [2023-11-29 00:45:42,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:45:42,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2049869967] [2023-11-29 00:45:42,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:45:42,424 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:42,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:45:42,425 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:45:42,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-29 00:45:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:45:42,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:45:42,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:45:42,648 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 19 treesize of output 11 [2023-11-29 00:45:42,835 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-29 00:45:42,835 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:45:42,835 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:45:42,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2049869967] [2023-11-29 00:45:42,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2049869967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:45:42,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:45:42,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:45:42,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119511256] [2023-11-29 00:45:42,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:45:42,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:45:42,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:45:42,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:45:42,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:45:42,837 INFO L87 Difference]: Start difference. First operand 372 states and 472 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2023-11-29 00:45:43,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:45:43,348 INFO L93 Difference]: Finished difference Result 810 states and 1027 transitions. [2023-11-29 00:45:43,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:45:43,349 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 129 [2023-11-29 00:45:43,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:45:43,351 INFO L225 Difference]: With dead ends: 810 [2023-11-29 00:45:43,351 INFO L226 Difference]: Without dead ends: 439 [2023-11-29 00:45:43,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:45:43,353 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 133 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:45:43,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 425 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:45:43,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2023-11-29 00:45:43,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 281. [2023-11-29 00:45:43,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 239 states have (on average 1.2301255230125523) internal successors, (294), 240 states have internal predecessors, (294), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 00:45:43,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 354 transitions. [2023-11-29 00:45:43,388 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 354 transitions. Word has length 129 [2023-11-29 00:45:43,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:45:43,388 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 354 transitions. [2023-11-29 00:45:43,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2023-11-29 00:45:43,388 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 354 transitions. [2023-11-29 00:45:43,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-29 00:45:43,389 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:45:43,389 INFO L195 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] [2023-11-29 00:45:43,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-11-29 00:45:43,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:43,590 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:45:43,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:45:43,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1246564695, now seen corresponding path program 1 times [2023-11-29 00:45:43,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:45:43,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670695214] [2023-11-29 00:45:43,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:45:43,591 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:43,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:45:43,592 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:45:43,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-29 00:45:43,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:45:43,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 00:45:43,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:45:43,896 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 15 treesize of output 1 [2023-11-29 00:45:43,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 29 treesize of output 13 [2023-11-29 00:45:44,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 35 treesize of output 19 [2023-11-29 00:45:44,484 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 34 treesize of output 16 [2023-11-29 00:45:44,530 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 19 treesize of output 11 [2023-11-29 00:45:44,581 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 174 proven. 39 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2023-11-29 00:45:44,581 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:45:44,925 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-29 00:45:44,925 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:45:44,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670695214] [2023-11-29 00:45:44,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1670695214] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:45:44,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:45:44,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 20 [2023-11-29 00:45:44,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783178523] [2023-11-29 00:45:44,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:45:44,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:45:44,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:45:44,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:45:44,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2023-11-29 00:45:44,926 INFO L87 Difference]: Start difference. First operand 281 states and 354 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2023-11-29 00:45:45,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:45:45,878 INFO L93 Difference]: Finished difference Result 639 states and 809 transitions. [2023-11-29 00:45:45,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:45:45,880 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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 129 [2023-11-29 00:45:45,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:45:45,882 INFO L225 Difference]: With dead ends: 639 [2023-11-29 00:45:45,882 INFO L226 Difference]: Without dead ends: 359 [2023-11-29 00:45:45,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2023-11-29 00:45:45,883 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 122 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:45:45,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 651 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 00:45:45,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-11-29 00:45:45,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 281. [2023-11-29 00:45:45,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 239 states have (on average 1.217573221757322) internal successors, (291), 240 states have internal predecessors, (291), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 00:45:45,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 351 transitions. [2023-11-29 00:45:45,922 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 351 transitions. Word has length 129 [2023-11-29 00:45:45,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:45:45,923 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 351 transitions. [2023-11-29 00:45:45,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2023-11-29 00:45:45,923 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 351 transitions. [2023-11-29 00:45:45,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-29 00:45:45,924 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:45:45,924 INFO L195 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] [2023-11-29 00:45:45,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-11-29 00:45:46,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:46,125 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:45:46,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:45:46,125 INFO L85 PathProgramCache]: Analyzing trace with hash 682370445, now seen corresponding path program 1 times [2023-11-29 00:45:46,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:45:46,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [603100771] [2023-11-29 00:45:46,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:45:46,126 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:46,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:45:46,127 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:45:46,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-29 00:45:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:45:46,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:45:46,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:45:46,369 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 19 treesize of output 11 [2023-11-29 00:45:46,394 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-29 00:45:46,394 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:45:46,394 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:45:46,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [603100771] [2023-11-29 00:45:46,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [603100771] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:45:46,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:45:46,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:45:46,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552181555] [2023-11-29 00:45:46,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:45:46,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:45:46,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:45:46,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:45:46,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:45:46,396 INFO L87 Difference]: Start difference. First operand 281 states and 351 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2023-11-29 00:45:46,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:45:46,975 INFO L93 Difference]: Finished difference Result 605 states and 756 transitions. [2023-11-29 00:45:46,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:45:46,976 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 129 [2023-11-29 00:45:46,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:45:46,977 INFO L225 Difference]: With dead ends: 605 [2023-11-29 00:45:46,977 INFO L226 Difference]: Without dead ends: 325 [2023-11-29 00:45:46,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:45:46,978 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 59 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:45:46,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 419 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 00:45:46,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2023-11-29 00:45:47,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 281. [2023-11-29 00:45:47,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 239 states have (on average 1.205020920502092) internal successors, (288), 240 states have internal predecessors, (288), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 00:45:47,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 348 transitions. [2023-11-29 00:45:47,008 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 348 transitions. Word has length 129 [2023-11-29 00:45:47,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:45:47,009 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 348 transitions. [2023-11-29 00:45:47,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2023-11-29 00:45:47,009 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 348 transitions. [2023-11-29 00:45:47,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-29 00:45:47,010 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:45:47,010 INFO L195 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] [2023-11-29 00:45:47,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-11-29 00:45:47,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:47,210 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:45:47,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:45:47,211 INFO L85 PathProgramCache]: Analyzing trace with hash -905977457, now seen corresponding path program 1 times [2023-11-29 00:45:47,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:45:47,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765255549] [2023-11-29 00:45:47,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:45:47,211 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:47,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:45:47,212 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:45:47,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-29 00:45:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:45:47,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 00:45:47,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:45:47,574 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 15 treesize of output 1 [2023-11-29 00:45:47,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 24 treesize of output 23 [2023-11-29 00:45:48,780 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:45:48,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 38 [2023-11-29 00:45:48,817 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 35 treesize of output 17 [2023-11-29 00:45:48,909 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:45:48,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 21 [2023-11-29 00:45:48,978 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 223 proven. 39 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2023-11-29 00:45:48,979 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:45:49,367 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-29 00:45:49,367 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:45:49,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765255549] [2023-11-29 00:45:49,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765255549] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:45:49,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:45:49,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 21 [2023-11-29 00:45:49,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668246686] [2023-11-29 00:45:49,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:45:49,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:45:49,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:45:49,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:45:49,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2023-11-29 00:45:49,369 INFO L87 Difference]: Start difference. First operand 281 states and 348 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2023-11-29 00:45:50,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:45:50,097 INFO L93 Difference]: Finished difference Result 599 states and 744 transitions. [2023-11-29 00:45:50,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:45:50,098 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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 129 [2023-11-29 00:45:50,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:45:50,100 INFO L225 Difference]: With dead ends: 599 [2023-11-29 00:45:50,100 INFO L226 Difference]: Without dead ends: 319 [2023-11-29 00:45:50,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2023-11-29 00:45:50,101 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 194 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:45:50,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 478 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 00:45:50,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2023-11-29 00:45:50,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 281. [2023-11-29 00:45:50,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 239 states have (on average 1.1924686192468619) internal successors, (285), 240 states have internal predecessors, (285), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 00:45:50,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 345 transitions. [2023-11-29 00:45:50,129 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 345 transitions. Word has length 129 [2023-11-29 00:45:50,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:45:50,129 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 345 transitions. [2023-11-29 00:45:50,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2023-11-29 00:45:50,129 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 345 transitions. [2023-11-29 00:45:50,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-29 00:45:50,130 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:45:50,130 INFO L195 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] [2023-11-29 00:45:50,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-11-29 00:45:50,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:50,330 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:45:50,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:45:50,331 INFO L85 PathProgramCache]: Analyzing trace with hash 80661696, now seen corresponding path program 1 times [2023-11-29 00:45:50,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:45:50,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [10030195] [2023-11-29 00:45:50,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:45:50,331 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:50,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:45:50,332 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:45:50,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-29 00:45:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:45:50,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 00:45:50,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:45:50,734 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 19 treesize of output 1 [2023-11-29 00:45:50,991 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 8 treesize of output 1 [2023-11-29 00:45:51,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 24 treesize of output 23 [2023-11-29 00:45:52,388 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 19 treesize of output 15 [2023-11-29 00:45:52,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 45 treesize of output 38 [2023-11-29 00:45:52,668 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:45:52,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 23 [2023-11-29 00:45:52,771 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 363 proven. 48 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2023-11-29 00:45:52,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:45:53,195 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-29 00:45:53,196 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:45:53,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [10030195] [2023-11-29 00:45:53,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [10030195] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:45:53,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:45:53,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [16] total 21 [2023-11-29 00:45:53,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138363531] [2023-11-29 00:45:53,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:45:53,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:45:53,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:45:53,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:45:53,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2023-11-29 00:45:53,198 INFO L87 Difference]: Start difference. First operand 281 states and 345 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2023-11-29 00:45:54,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:45:54,153 INFO L93 Difference]: Finished difference Result 664 states and 826 transitions. [2023-11-29 00:45:54,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:45:54,155 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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 130 [2023-11-29 00:45:54,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:45:54,156 INFO L225 Difference]: With dead ends: 664 [2023-11-29 00:45:54,156 INFO L226 Difference]: Without dead ends: 384 [2023-11-29 00:45:54,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2023-11-29 00:45:54,158 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 183 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:45:54,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 504 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 00:45:54,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-11-29 00:45:54,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 237. [2023-11-29 00:45:54,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 195 states have (on average 1.1794871794871795) internal successors, (230), 196 states have internal predecessors, (230), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 00:45:54,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 290 transitions. [2023-11-29 00:45:54,208 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 290 transitions. Word has length 130 [2023-11-29 00:45:54,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:45:54,208 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 290 transitions. [2023-11-29 00:45:54,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2023-11-29 00:45:54,208 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 290 transitions. [2023-11-29 00:45:54,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-29 00:45:54,209 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:45:54,210 INFO L195 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] [2023-11-29 00:45:54,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-11-29 00:45:54,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:54,410 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:45:54,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:45:54,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1099989318, now seen corresponding path program 1 times [2023-11-29 00:45:54,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:45:54,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1404722386] [2023-11-29 00:45:54,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:45:54,411 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:54,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:45:54,412 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:45:54,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-29 00:45:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:45:54,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 00:45:54,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:45:54,759 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 8 treesize of output 1 [2023-11-29 00:45:55,021 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 15 treesize of output 1 [2023-11-29 00:45:55,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 29 treesize of output 13 [2023-11-29 00:45:55,996 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 19 treesize of output 15 [2023-11-29 00:45:56,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 44 treesize of output 37 [2023-11-29 00:45:56,176 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:45:56,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 26 [2023-11-29 00:45:56,181 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 29 treesize of output 17 [2023-11-29 00:45:56,270 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 363 proven. 48 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2023-11-29 00:45:56,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:45:56,614 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-29 00:45:56,614 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:45:56,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1404722386] [2023-11-29 00:45:56,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1404722386] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:45:56,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:45:56,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [16] total 21 [2023-11-29 00:45:56,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752890366] [2023-11-29 00:45:56,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:45:56,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:45:56,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:45:56,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:45:56,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2023-11-29 00:45:56,616 INFO L87 Difference]: Start difference. First operand 237 states and 290 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2023-11-29 00:45:57,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:45:57,349 INFO L93 Difference]: Finished difference Result 582 states and 712 transitions. [2023-11-29 00:45:57,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:45:57,350 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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 130 [2023-11-29 00:45:57,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:45:57,351 INFO L225 Difference]: With dead ends: 582 [2023-11-29 00:45:57,351 INFO L226 Difference]: Without dead ends: 346 [2023-11-29 00:45:57,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2023-11-29 00:45:57,352 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 173 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:45:57,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 344 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 00:45:57,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2023-11-29 00:45:57,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 237. [2023-11-29 00:45:57,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 195 states have (on average 1.1692307692307693) internal successors, (228), 196 states have internal predecessors, (228), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 00:45:57,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 288 transitions. [2023-11-29 00:45:57,397 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 288 transitions. Word has length 130 [2023-11-29 00:45:57,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:45:57,397 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 288 transitions. [2023-11-29 00:45:57,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2023-11-29 00:45:57,397 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 288 transitions. [2023-11-29 00:45:57,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-29 00:45:57,398 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:45:57,399 INFO L195 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] [2023-11-29 00:45:57,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-11-29 00:45:57,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:57,599 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:45:57,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:45:57,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1859659081, now seen corresponding path program 1 times [2023-11-29 00:45:57,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:45:57,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [533823903] [2023-11-29 00:45:57,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:45:57,600 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:57,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:45:57,601 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:45:57,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-29 00:45:57,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:45:57,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:45:57,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:45:57,957 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 14 treesize of output 10 [2023-11-29 00:45:58,277 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 21 treesize of output 17 [2023-11-29 00:45:58,327 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 19 treesize of output 15 [2023-11-29 00:45:58,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 43 treesize of output 36 [2023-11-29 00:45:58,572 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 57 treesize of output 39 [2023-11-29 00:45:58,576 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:45:58,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 36 [2023-11-29 00:45:58,615 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2023-11-29 00:45:58,615 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:45:58,615 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:45:58,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [533823903] [2023-11-29 00:45:58,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [533823903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:45:58,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:45:58,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:45:58,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733384958] [2023-11-29 00:45:58,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:45:58,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:45:58,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:45:58,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:45:58,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:45:58,617 INFO L87 Difference]: Start difference. First operand 237 states and 288 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-29 00:46:00,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:46:00,122 INFO L93 Difference]: Finished difference Result 698 states and 838 transitions. [2023-11-29 00:46:00,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:46:00,124 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 130 [2023-11-29 00:46:00,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:46:00,125 INFO L225 Difference]: With dead ends: 698 [2023-11-29 00:46:00,125 INFO L226 Difference]: Without dead ends: 462 [2023-11-29 00:46:00,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:46:00,126 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 283 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:46:00,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 470 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 00:46:00,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2023-11-29 00:46:00,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 345. [2023-11-29 00:46:00,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 303 states have (on average 1.174917491749175) internal successors, (356), 304 states have internal predecessors, (356), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 00:46:00,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 416 transitions. [2023-11-29 00:46:00,172 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 416 transitions. Word has length 130 [2023-11-29 00:46:00,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:46:00,172 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 416 transitions. [2023-11-29 00:46:00,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-29 00:46:00,172 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 416 transitions. [2023-11-29 00:46:00,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-29 00:46:00,173 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:46:00,173 INFO L195 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] [2023-11-29 00:46:00,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-11-29 00:46:00,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:46:00,374 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:46:00,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:46:00,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1859599499, now seen corresponding path program 1 times [2023-11-29 00:46:00,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:46:00,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [448418000] [2023-11-29 00:46:00,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:46:00,375 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:46:00,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:46:00,375 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:46:00,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-29 00:46:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:46:00,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 00:46:00,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:46:00,715 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 14 treesize of output 10 [2023-11-29 00:46:01,078 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 21 treesize of output 17 [2023-11-29 00:46:01,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 39 treesize of output 38 [2023-11-29 00:46:01,189 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 19 treesize of output 15 [2023-11-29 00:46:01,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 60 treesize of output 47 [2023-11-29 00:46:01,653 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2023-11-29 00:46:01,654 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:46:01,654 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:46:01,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [448418000] [2023-11-29 00:46:01,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [448418000] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:46:01,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:46:01,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:46:01,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417186358] [2023-11-29 00:46:01,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:46:01,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:46:01,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:46:01,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:46:01,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:46:01,656 INFO L87 Difference]: Start difference. First operand 345 states and 416 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-29 00:46:03,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:46:03,086 INFO L93 Difference]: Finished difference Result 497 states and 588 transitions. [2023-11-29 00:46:03,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:46:03,087 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 130 [2023-11-29 00:46:03,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:46:03,089 INFO L225 Difference]: With dead ends: 497 [2023-11-29 00:46:03,089 INFO L226 Difference]: Without dead ends: 495 [2023-11-29 00:46:03,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:46:03,090 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 278 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:46:03,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 368 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 00:46:03,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2023-11-29 00:46:03,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 349. [2023-11-29 00:46:03,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 307 states have (on average 1.1726384364820848) internal successors, (360), 308 states have internal predecessors, (360), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 00:46:03,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 420 transitions. [2023-11-29 00:46:03,127 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 420 transitions. Word has length 130 [2023-11-29 00:46:03,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:46:03,128 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 420 transitions. [2023-11-29 00:46:03,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-29 00:46:03,128 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 420 transitions. [2023-11-29 00:46:03,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-29 00:46:03,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:46:03,129 INFO L195 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] [2023-11-29 00:46:03,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2023-11-29 00:46:03,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:46:03,329 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:46:03,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:46:03,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1240537928, now seen corresponding path program 1 times [2023-11-29 00:46:03,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:46:03,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1192246126] [2023-11-29 00:46:03,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:46:03,330 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:46:03,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:46:03,331 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:46:03,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-11-29 00:46:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:46:03,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 00:46:03,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:46:03,663 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 19 treesize of output 1 [2023-11-29 00:46:03,888 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 8 treesize of output 1 [2023-11-29 00:46:04,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 29 treesize of output 13 [2023-11-29 00:46:04,799 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 19 treesize of output 15 [2023-11-29 00:46:04,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 56 treesize of output 43 [2023-11-29 00:46:04,988 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:46:04,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 32 [2023-11-29 00:46:04,992 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 29 treesize of output 17 [2023-11-29 00:46:05,079 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 363 proven. 48 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2023-11-29 00:46:05,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:46:05,363 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-29 00:46:05,363 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:46:05,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1192246126] [2023-11-29 00:46:05,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1192246126] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:46:05,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:46:05,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [16] total 21 [2023-11-29 00:46:05,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53261223] [2023-11-29 00:46:05,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:46:05,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:46:05,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:46:05,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:46:05,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2023-11-29 00:46:05,365 INFO L87 Difference]: Start difference. First operand 349 states and 420 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2023-11-29 00:46:06,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:46:06,154 INFO L93 Difference]: Finished difference Result 908 states and 1091 transitions. [2023-11-29 00:46:06,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:46:06,155 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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 130 [2023-11-29 00:46:06,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:46:06,157 INFO L225 Difference]: With dead ends: 908 [2023-11-29 00:46:06,157 INFO L226 Difference]: Without dead ends: 560 [2023-11-29 00:46:06,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2023-11-29 00:46:06,158 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 146 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 00:46:06,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 409 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 00:46:06,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2023-11-29 00:46:06,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 426. [2023-11-29 00:46:06,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 384 states have (on average 1.1692708333333333) internal successors, (449), 385 states have internal predecessors, (449), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 00:46:06,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 509 transitions. [2023-11-29 00:46:06,214 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 509 transitions. Word has length 130 [2023-11-29 00:46:06,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:46:06,214 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 509 transitions. [2023-11-29 00:46:06,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2023-11-29 00:46:06,214 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 509 transitions. [2023-11-29 00:46:06,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-29 00:46:06,216 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:46:06,216 INFO L195 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] [2023-11-29 00:46:06,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2023-11-29 00:46:06,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:46:06,416 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:46:06,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:46:06,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1093538955, now seen corresponding path program 1 times [2023-11-29 00:46:06,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:46:06,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1676843115] [2023-11-29 00:46:06,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:46:06,417 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:46:06,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:46:06,418 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:46:06,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-11-29 00:46:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:46:53,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-29 00:46:53,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:46:53,931 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 12 treesize of output 8 [2023-11-29 00:46:54,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 32 [2023-11-29 00:46:55,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 18 treesize of output 7 [2023-11-29 00:46:55,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7 treesize of output 3 [2023-11-29 00:46:56,693 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 12 treesize of output 8 [2023-11-29 00:46:57,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 32 treesize of output 27 [2023-11-29 00:47:00,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 37 treesize of output 36 [2023-11-29 00:47:01,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 56 [2023-11-29 00:47:06,156 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:47:06,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 108 treesize of output 82 [2023-11-29 00:47:10,748 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:47:10,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 157 treesize of output 127 [2023-11-29 00:47:11,061 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 15 treesize of output 11 [2023-11-29 00:47:25,732 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:47:25,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 84 [2023-11-29 00:47:25,774 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:47:25,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 58 [2023-11-29 00:47:25,806 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:47:25,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 126 treesize of output 68 [2023-11-29 00:47:27,746 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 170 proven. 303 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-11-29 00:47:27,746 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:47:41,991 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-29 00:47:41,991 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:47:41,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1676843115] [2023-11-29 00:47:41,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1676843115] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:47:41,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:47:41,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [39] total 43 [2023-11-29 00:47:41,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505558332] [2023-11-29 00:47:41,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:47:41,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:47:41,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:47:41,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:47:41,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1577, Unknown=1, NotChecked=0, Total=1806 [2023-11-29 00:47:41,994 INFO L87 Difference]: Start difference. First operand 426 states and 509 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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) [2023-11-29 00:47:50,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:47:50,820 INFO L93 Difference]: Finished difference Result 907 states and 1084 transitions. [2023-11-29 00:47:50,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:47:50,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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 [2023-11-29 00:47:50,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:47:50,833 INFO L225 Difference]: With dead ends: 907 [2023-11-29 00:47:50,833 INFO L226 Difference]: Without dead ends: 482 [2023-11-29 00:47:50,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 218 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 25.8s TimeCoverageRelationStatistics Valid=233, Invalid=1658, Unknown=1, NotChecked=0, Total=1892 [2023-11-29 00:47:50,836 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 99 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:47:50,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 358 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-11-29 00:47:50,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2023-11-29 00:47:50,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 426. [2023-11-29 00:47:50,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 384 states have (on average 1.1640625) internal successors, (447), 385 states have internal predecessors, (447), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 00:47:50,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 507 transitions. [2023-11-29 00:47:50,890 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 507 transitions. Word has length 131 [2023-11-29 00:47:50,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:47:50,891 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 507 transitions. [2023-11-29 00:47:50,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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) [2023-11-29 00:47:50,891 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 507 transitions. [2023-11-29 00:47:50,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-29 00:47:50,893 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:47:50,893 INFO L195 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] [2023-11-29 00:47:50,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2023-11-29 00:47:51,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:47:51,093 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:47:51,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:47:51,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1248716179, now seen corresponding path program 1 times [2023-11-29 00:47:51,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:47:51,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563096360] [2023-11-29 00:47:51,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:47:51,095 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:47:51,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:47:51,096 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:47:51,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-11-29 00:47:51,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:47:51,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 00:47:51,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:47:51,412 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 12 treesize of output 8 [2023-11-29 00:47:51,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 37 treesize of output 17 [2023-11-29 00:47:52,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 39 treesize of output 30 [2023-11-29 00:47:52,585 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:47:52,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 26 [2023-11-29 00:47:52,793 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 134 proven. 42 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2023-11-29 00:47:52,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:47:53,249 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-29 00:47:53,249 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:47:53,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1563096360] [2023-11-29 00:47:53,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1563096360] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:47:53,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:47:53,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 22 [2023-11-29 00:47:53,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710996368] [2023-11-29 00:47:53,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:47:53,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:47:53,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:47:53,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:47:53,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2023-11-29 00:47:53,251 INFO L87 Difference]: Start difference. First operand 426 states and 507 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 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) [2023-11-29 00:47:54,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:47:54,531 INFO L93 Difference]: Finished difference Result 909 states and 1083 transitions. [2023-11-29 00:47:54,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:47:54,532 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 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 [2023-11-29 00:47:54,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:47:54,534 INFO L225 Difference]: With dead ends: 909 [2023-11-29 00:47:54,534 INFO L226 Difference]: Without dead ends: 484 [2023-11-29 00:47:54,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2023-11-29 00:47:54,535 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 162 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:47:54,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 1017 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 00:47:54,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2023-11-29 00:47:54,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 408. [2023-11-29 00:47:54,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 366 states have (on average 1.1557377049180328) internal successors, (423), 367 states have internal predecessors, (423), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 00:47:54,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 483 transitions. [2023-11-29 00:47:54,590 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 483 transitions. Word has length 131 [2023-11-29 00:47:54,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:47:54,591 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 483 transitions. [2023-11-29 00:47:54,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 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) [2023-11-29 00:47:54,591 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 483 transitions. [2023-11-29 00:47:54,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-29 00:47:54,592 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:47:54,592 INFO L195 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] [2023-11-29 00:47:54,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2023-11-29 00:47:54,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:47:54,793 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:47:54,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:47:54,793 INFO L85 PathProgramCache]: Analyzing trace with hash 280561451, now seen corresponding path program 1 times [2023-11-29 00:47:54,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:47:54,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [656214776] [2023-11-29 00:47:54,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:47:54,794 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:47:54,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:47:54,795 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:47:54,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-11-29 00:47:55,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:47:55,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 00:47:55,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:47:55,087 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 12 treesize of output 8 [2023-11-29 00:47:55,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 28 treesize of output 12 [2023-11-29 00:47:55,449 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 19 treesize of output 15 [2023-11-29 00:47:55,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 37 treesize of output 36 [2023-11-29 00:47:55,534 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:47:55,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 56 [2023-11-29 00:47:55,667 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 19 treesize of output 15 [2023-11-29 00:47:55,674 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:47:55,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 65 [2023-11-29 00:47:56,132 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:47:56,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 57 [2023-11-29 00:47:56,138 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:47:56,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 36 [2023-11-29 00:47:56,244 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2023-11-29 00:47:56,244 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:47:56,244 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:47:56,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [656214776] [2023-11-29 00:47:56,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [656214776] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:47:56,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:47:56,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:47:56,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448890818] [2023-11-29 00:47:56,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:47:56,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 00:47:56,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:47:56,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 00:47:56,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:47:56,246 INFO L87 Difference]: Start difference. First operand 408 states and 483 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-29 00:47:59,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:47:59,624 INFO L93 Difference]: Finished difference Result 1153 states and 1371 transitions. [2023-11-29 00:47:59,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-29 00:47:59,625 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 132 [2023-11-29 00:47:59,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:47:59,628 INFO L225 Difference]: With dead ends: 1153 [2023-11-29 00:47:59,628 INFO L226 Difference]: Without dead ends: 746 [2023-11-29 00:47:59,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=278, Invalid=652, Unknown=0, NotChecked=0, Total=930 [2023-11-29 00:47:59,629 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 519 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:47:59,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 702 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 00:47:59,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2023-11-29 00:47:59,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 495. [2023-11-29 00:47:59,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 453 states have (on average 1.1655629139072847) internal successors, (528), 454 states have internal predecessors, (528), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 00:47:59,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 588 transitions. [2023-11-29 00:47:59,675 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 588 transitions. Word has length 132 [2023-11-29 00:47:59,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:47:59,676 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 588 transitions. [2023-11-29 00:47:59,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-29 00:47:59,676 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 588 transitions. [2023-11-29 00:47:59,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-29 00:47:59,677 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:47:59,677 INFO L195 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] [2023-11-29 00:47:59,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2023-11-29 00:47:59,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:47:59,878 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:47:59,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:47:59,878 INFO L85 PathProgramCache]: Analyzing trace with hash 421110061, now seen corresponding path program 1 times [2023-11-29 00:47:59,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:47:59,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [480110003] [2023-11-29 00:47:59,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:47:59,879 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:47:59,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:47:59,880 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:47:59,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-11-29 00:48:00,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:48:00,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 00:48:00,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:48:00,196 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 12 treesize of output 8 [2023-11-29 00:48:00,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 32 treesize of output 27 [2023-11-29 00:48:02,852 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 23 treesize of output 11 [2023-11-29 00:48:02,995 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:48:02,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 29 [2023-11-29 00:48:03,105 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 373 proven. 81 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-29 00:48:03,105 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:48:03,627 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:48:03,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [480110003] [2023-11-29 00:48:03,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [480110003] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:48:03,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [747910995] [2023-11-29 00:48:03,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:48:03,628 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 00:48:03,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 00:48:03,629 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 00:48:03,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2023-11-29 00:48:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:48:04,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 00:48:04,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:48:04,423 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 12 treesize of output 8 [2023-11-29 00:48:05,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2023-11-29 00:48:09,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2023-11-29 00:48:10,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31 [2023-11-29 00:48:10,211 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 368 proven. 81 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-29 00:48:10,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:48:11,286 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:48:11,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 41 [2023-11-29 00:48:11,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [747910995] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:48:11,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:48:11,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 37 [2023-11-29 00:48:11,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859088365] [2023-11-29 00:48:11,511 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:48:11,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-29 00:48:11,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:48:11,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-29 00:48:11,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1929, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 00:48:11,513 INFO L87 Difference]: Start difference. First operand 495 states and 588 transitions. Second operand has 37 states, 31 states have (on average 3.6774193548387095) internal successors, (114), 35 states have internal predecessors, (114), 15 states have call successors, (34), 11 states have call predecessors, (34), 15 states have return successors, (34), 9 states have call predecessors, (34), 15 states have call successors, (34) [2023-11-29 00:48:18,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:48:18,370 INFO L93 Difference]: Finished difference Result 922 states and 1082 transitions. [2023-11-29 00:48:18,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-29 00:48:18,371 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 31 states have (on average 3.6774193548387095) internal successors, (114), 35 states have internal predecessors, (114), 15 states have call successors, (34), 11 states have call predecessors, (34), 15 states have return successors, (34), 9 states have call predecessors, (34), 15 states have call successors, (34) Word has length 132 [2023-11-29 00:48:18,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:48:18,372 INFO L225 Difference]: With dead ends: 922 [2023-11-29 00:48:18,372 INFO L226 Difference]: Without dead ends: 428 [2023-11-29 00:48:18,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 313 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1354 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=804, Invalid=4026, Unknown=0, NotChecked=0, Total=4830 [2023-11-29 00:48:18,375 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 224 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:48:18,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 752 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-29 00:48:18,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2023-11-29 00:48:18,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 412. [2023-11-29 00:48:18,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 366 states have (on average 1.1420765027322404) internal successors, (418), 367 states have internal predecessors, (418), 30 states have call successors, (30), 15 states have call predecessors, (30), 15 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 00:48:18,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 478 transitions. [2023-11-29 00:48:18,447 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 478 transitions. Word has length 132 [2023-11-29 00:48:18,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:48:18,447 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 478 transitions. [2023-11-29 00:48:18,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 31 states have (on average 3.6774193548387095) internal successors, (114), 35 states have internal predecessors, (114), 15 states have call successors, (34), 11 states have call predecessors, (34), 15 states have return successors, (34), 9 states have call predecessors, (34), 15 states have call successors, (34) [2023-11-29 00:48:18,447 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 478 transitions. [2023-11-29 00:48:18,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-29 00:48:18,449 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:48:18,449 INFO L195 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] [2023-11-29 00:48:18,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2023-11-29 00:48:18,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2023-11-29 00:48:18,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:48:18,850 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:48:18,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:48:18,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1179817822, now seen corresponding path program 1 times [2023-11-29 00:48:18,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:48:18,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399456197] [2023-11-29 00:48:18,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:48:18,851 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:48:18,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:48:18,852 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:48:18,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-11-29 00:48:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:48:19,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:48:19,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:48:19,687 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 27 treesize of output 15 [2023-11-29 00:48:19,728 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 78 proven. 45 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2023-11-29 00:48:19,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:48:19,915 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-29 00:48:19,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:48:19,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [399456197] [2023-11-29 00:48:19,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [399456197] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:48:19,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:48:19,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-11-29 00:48:19,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588534623] [2023-11-29 00:48:19,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:48:19,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:48:19,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:48:19,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:48:19,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:48:19,917 INFO L87 Difference]: Start difference. First operand 412 states and 478 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2023-11-29 00:48:20,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:48:20,174 INFO L93 Difference]: Finished difference Result 833 states and 965 transitions. [2023-11-29 00:48:20,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:48:20,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 132 [2023-11-29 00:48:20,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:48:20,177 INFO L225 Difference]: With dead ends: 833 [2023-11-29 00:48:20,177 INFO L226 Difference]: Without dead ends: 422 [2023-11-29 00:48:20,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:48:20,178 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 53 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:48:20,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 335 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:48:20,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-11-29 00:48:20,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 412. [2023-11-29 00:48:20,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 366 states have (on average 1.139344262295082) internal successors, (417), 367 states have internal predecessors, (417), 30 states have call successors, (30), 15 states have call predecessors, (30), 15 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 00:48:20,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 477 transitions. [2023-11-29 00:48:20,228 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 477 transitions. Word has length 132 [2023-11-29 00:48:20,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:48:20,228 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 477 transitions. [2023-11-29 00:48:20,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2023-11-29 00:48:20,228 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 477 transitions. [2023-11-29 00:48:20,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-29 00:48:20,229 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:48:20,229 INFO L195 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] [2023-11-29 00:48:20,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2023-11-29 00:48:20,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:48:20,430 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:48:20,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:48:20,430 INFO L85 PathProgramCache]: Analyzing trace with hash -370471196, now seen corresponding path program 1 times [2023-11-29 00:48:20,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:48:20,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14772109] [2023-11-29 00:48:20,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:48:20,431 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:48:20,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:48:20,432 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:48:20,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-11-29 00:48:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:48:57,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 62 conjunts are in the unsatisfiable core [2023-11-29 00:48:57,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:48:57,515 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 9 treesize of output 3 [2023-11-29 00:48:57,560 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 12 treesize of output 8 [2023-11-29 00:48:58,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 32 [2023-11-29 00:48:59,846 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 12 treesize of output 8 [2023-11-29 00:49:01,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 37 treesize of output 17 [2023-11-29 00:49:03,833 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 28 treesize of output 24 [2023-11-29 00:49:04,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 45 [2023-11-29 00:49:06,057 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:49:06,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 103 treesize of output 96 [2023-11-29 00:49:10,918 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:49:10,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 186 treesize of output 140 [2023-11-29 00:49:11,578 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 15 treesize of output 11 [2023-11-29 00:49:39,336 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:49:39,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 69 [2023-11-29 00:49:39,387 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:49:39,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 99 treesize of output 61 [2023-11-29 00:49:39,531 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:49:39,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 18 [2023-11-29 00:49:43,039 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 329 proven. 138 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-11-29 00:49:43,039 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:50:50,219 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-29 00:50:50,219 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:50:50,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14772109] [2023-11-29 00:50:50,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [14772109] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:50:50,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:50:50,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [34] total 40 [2023-11-29 00:50:50,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50512353] [2023-11-29 00:50:50,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:50:50,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:50:50,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:50:50,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:50:50,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1312, Unknown=15, NotChecked=0, Total=1560 [2023-11-29 00:50:50,221 INFO L87 Difference]: Start difference. First operand 412 states and 477 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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) [2023-11-29 00:51:05,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:51:05,882 INFO L93 Difference]: Finished difference Result 925 states and 1068 transitions. [2023-11-29 00:51:05,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:51:05,891 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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 132 [2023-11-29 00:51:05,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:51:05,893 INFO L225 Difference]: With dead ends: 925 [2023-11-29 00:51:05,893 INFO L226 Difference]: Without dead ends: 514 [2023-11-29 00:51:05,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 222 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 94.3s TimeCoverageRelationStatistics Valid=255, Invalid=1536, Unknown=15, NotChecked=0, Total=1806 [2023-11-29 00:51:05,894 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 128 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:51:05,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 475 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2023-11-29 00:51:05,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2023-11-29 00:51:05,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 420. [2023-11-29 00:51:05,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 374 states have (on average 1.1363636363636365) internal successors, (425), 375 states have internal predecessors, (425), 30 states have call successors, (30), 15 states have call predecessors, (30), 15 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 00:51:05,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 485 transitions. [2023-11-29 00:51:05,946 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 485 transitions. Word has length 132 [2023-11-29 00:51:05,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:51:05,946 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 485 transitions. [2023-11-29 00:51:05,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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) [2023-11-29 00:51:05,946 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 485 transitions. [2023-11-29 00:51:05,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-29 00:51:05,947 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:51:05,947 INFO L195 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] [2023-11-29 00:51:05,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-11-29 00:51:06,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:51:06,148 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:51:06,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:51:06,148 INFO L85 PathProgramCache]: Analyzing trace with hash 2122462630, now seen corresponding path program 1 times [2023-11-29 00:51:06,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:51:06,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1885995433] [2023-11-29 00:51:06,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:51:06,149 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:51:06,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:51:06,149 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:51:06,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-11-29 00:51:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:51:06,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 00:51:06,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:51:06,409 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 21 treesize of output 17 [2023-11-29 00:51:06,565 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-29 00:51:06,566 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:51:06,566 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:51:06,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1885995433] [2023-11-29 00:51:06,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1885995433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:51:06,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:51:06,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:51:06,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416826406] [2023-11-29 00:51:06,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:51:06,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:51:06,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:51:06,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:51:06,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:51:06,568 INFO L87 Difference]: Start difference. First operand 420 states and 485 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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) [2023-11-29 00:51:07,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:51:07,316 INFO L93 Difference]: Finished difference Result 1078 states and 1240 transitions. [2023-11-29 00:51:07,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:51:07,317 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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 [2023-11-29 00:51:07,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:51:07,319 INFO L225 Difference]: With dead ends: 1078 [2023-11-29 00:51:07,320 INFO L226 Difference]: Without dead ends: 659 [2023-11-29 00:51:07,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:51:07,321 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 93 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:51:07,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 953 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 00:51:07,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2023-11-29 00:51:07,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 653. [2023-11-29 00:51:07,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 573 states have (on average 1.1221640488656195) internal successors, (643), 576 states have internal predecessors, (643), 52 states have call successors, (52), 27 states have call predecessors, (52), 27 states have return successors, (52), 49 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-29 00:51:07,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 747 transitions. [2023-11-29 00:51:07,414 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 747 transitions. Word has length 133 [2023-11-29 00:51:07,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:51:07,414 INFO L495 AbstractCegarLoop]: Abstraction has 653 states and 747 transitions. [2023-11-29 00:51:07,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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) [2023-11-29 00:51:07,414 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 747 transitions. [2023-11-29 00:51:07,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-29 00:51:07,415 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:51:07,415 INFO L195 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] [2023-11-29 00:51:07,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Ended with exit code 0 [2023-11-29 00:51:07,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:51:07,616 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:51:07,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:51:07,616 INFO L85 PathProgramCache]: Analyzing trace with hash -2031956056, now seen corresponding path program 1 times [2023-11-29 00:51:07,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:51:07,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598159140] [2023-11-29 00:51:07,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:51:07,617 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:51:07,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:51:07,618 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:51:07,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-11-29 00:51:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:51:07,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:51:07,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:51:08,311 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 78 proven. 45 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2023-11-29 00:51:08,311 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:51:08,404 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-29 00:51:08,404 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:51:08,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598159140] [2023-11-29 00:51:08,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598159140] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:51:08,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:51:08,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2023-11-29 00:51:08,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092400829] [2023-11-29 00:51:08,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:51:08,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:51:08,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:51:08,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:51:08,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:51:08,405 INFO L87 Difference]: Start difference. First operand 653 states and 747 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) [2023-11-29 00:51:08,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:51:08,677 INFO L93 Difference]: Finished difference Result 1290 states and 1474 transitions. [2023-11-29 00:51:08,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:51:08,677 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 [2023-11-29 00:51:08,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:51:08,680 INFO L225 Difference]: With dead ends: 1290 [2023-11-29 00:51:08,680 INFO L226 Difference]: Without dead ends: 638 [2023-11-29 00:51:08,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:51:08,681 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 96 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:51:08,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 413 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:51:08,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2023-11-29 00:51:08,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 621. [2023-11-29 00:51:08,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 541 states have (on average 1.11275415896488) internal successors, (602), 544 states have internal predecessors, (602), 52 states have call successors, (52), 27 states have call predecessors, (52), 27 states have return successors, (52), 49 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-29 00:51:08,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 706 transitions. [2023-11-29 00:51:08,773 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 706 transitions. Word has length 133 [2023-11-29 00:51:08,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:51:08,773 INFO L495 AbstractCegarLoop]: Abstraction has 621 states and 706 transitions. [2023-11-29 00:51:08,773 INFO L496 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) [2023-11-29 00:51:08,773 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 706 transitions. [2023-11-29 00:51:08,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-29 00:51:08,774 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:51:08,774 INFO L195 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] [2023-11-29 00:51:08,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Ended with exit code 0 [2023-11-29 00:51:08,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:51:08,974 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:51:08,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:51:08,975 INFO L85 PathProgramCache]: Analyzing trace with hash 792922216, now seen corresponding path program 1 times [2023-11-29 00:51:08,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:51:08,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [980545848] [2023-11-29 00:51:08,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:51:08,976 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:51:08,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:51:08,976 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:51:08,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-11-29 00:51:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:51:09,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:51:09,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:51:09,693 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 78 proven. 45 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2023-11-29 00:51:09,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:51:09,842 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-29 00:51:09,842 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:51:09,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [980545848] [2023-11-29 00:51:09,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [980545848] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:51:09,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:51:09,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2023-11-29 00:51:09,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584968221] [2023-11-29 00:51:09,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:51:09,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:51:09,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:51:09,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:51:09,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:51:09,844 INFO L87 Difference]: Start difference. First operand 621 states and 706 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) [2023-11-29 00:51:10,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:51:10,154 INFO L93 Difference]: Finished difference Result 1259 states and 1430 transitions. [2023-11-29 00:51:10,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:51:10,155 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 [2023-11-29 00:51:10,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:51:10,157 INFO L225 Difference]: With dead ends: 1259 [2023-11-29 00:51:10,157 INFO L226 Difference]: Without dead ends: 639 [2023-11-29 00:51:10,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:51:10,158 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 34 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:51:10,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 528 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:51:10,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2023-11-29 00:51:10,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 622. [2023-11-29 00:51:10,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 542 states have (on average 1.1125461254612545) internal successors, (603), 545 states have internal predecessors, (603), 52 states have call successors, (52), 27 states have call predecessors, (52), 27 states have return successors, (52), 49 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-29 00:51:10,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 707 transitions. [2023-11-29 00:51:10,255 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 707 transitions. Word has length 133 [2023-11-29 00:51:10,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:51:10,255 INFO L495 AbstractCegarLoop]: Abstraction has 622 states and 707 transitions. [2023-11-29 00:51:10,255 INFO L496 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) [2023-11-29 00:51:10,255 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 707 transitions. [2023-11-29 00:51:10,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-29 00:51:10,256 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:51:10,257 INFO L195 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] [2023-11-29 00:51:10,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Ended with exit code 0 [2023-11-29 00:51:10,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:51:10,457 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:51:10,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:51:10,458 INFO L85 PathProgramCache]: Analyzing trace with hash -819282828, now seen corresponding path program 1 times [2023-11-29 00:51:10,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:51:10,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1364121686] [2023-11-29 00:51:10,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:51:10,458 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:51:10,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:51:10,459 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:51:10,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-11-29 00:51:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:51:11,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-29 00:51:11,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:51:11,890 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 12 treesize of output 8 [2023-11-29 00:51:12,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 46 treesize of output 22 [2023-11-29 00:51:12,591 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 8 treesize of output 1 [2023-11-29 00:51:14,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 28 treesize of output 27 [2023-11-29 00:51:15,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 47 [2023-11-29 00:51:16,781 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:51:16,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 91 [2023-11-29 00:51:20,681 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:51:20,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 127 [2023-11-29 00:51:20,686 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 15 treesize of output 11 [2023-11-29 00:51:27,575 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 48 treesize of output 36 [2023-11-29 00:51:27,615 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:51:27,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 103 treesize of output 53 [2023-11-29 00:51:27,651 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:51:27,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 48 [2023-11-29 00:51:29,746 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 301 proven. 120 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-11-29 00:51:29,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:51:42,061 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-29 00:51:42,061 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:51:42,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1364121686] [2023-11-29 00:51:42,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1364121686] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:51:42,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:51:42,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [26] total 29 [2023-11-29 00:51:42,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287006449] [2023-11-29 00:51:42,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:51:42,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:51:42,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:51:42,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:51:42,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=660, Unknown=1, NotChecked=0, Total=812 [2023-11-29 00:51:42,064 INFO L87 Difference]: Start difference. First operand 622 states and 707 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2023-11-29 00:51:51,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:51:51,232 INFO L93 Difference]: Finished difference Result 1242 states and 1409 transitions. [2023-11-29 00:51:51,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:51:51,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 136 [2023-11-29 00:51:51,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:51:51,243 INFO L225 Difference]: With dead ends: 1242 [2023-11-29 00:51:51,243 INFO L226 Difference]: Without dead ends: 0 [2023-11-29 00:51:51,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 242 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=156, Invalid=713, Unknown=1, NotChecked=0, Total=870 [2023-11-29 00:51:51,245 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 74 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:51:51,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 260 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-11-29 00:51:51,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-29 00:51:51,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-29 00:51:51,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:51:51,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 00:51:51,246 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 136 [2023-11-29 00:51:51,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:51:51,246 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 00:51:51,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2023-11-29 00:51:51,246 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-29 00:51:51,246 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-29 00:51:51,250 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 00:51:51,258 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Ended with exit code 0 [2023-11-29 00:51:51,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2eac3d4-a654-4aeb-8d43-a9c99e0d7362/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:51:51,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.