./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-34.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_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/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_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-34.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/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_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/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 2b329d9832ec99d9ffbb7796b225f0eac74b08ac18938b07d93f1b80cf8ae2f9 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:12:51,919 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:12:51,995 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 00:12:51,999 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:12:51,999 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:12:52,022 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:12:52,023 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:12:52,024 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:12:52,024 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:12:52,025 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:12:52,025 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:12:52,026 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:12:52,027 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:12:52,027 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:12:52,028 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:12:52,028 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:12:52,029 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:12:52,029 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:12:52,030 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:12:52,030 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:12:52,031 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:12:52,032 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:12:52,032 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:12:52,032 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:12:52,033 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:12:52,033 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:12:52,034 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:12:52,034 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:12:52,035 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:12:52,035 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:12:52,035 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:12:52,036 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:12:52,036 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:12:52,036 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:12:52,037 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:12:52,037 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:12:52,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:12:52,037 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:12:52,037 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:12:52,037 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:12:52,038 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:12:52,038 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:12:52,038 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_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b329d9832ec99d9ffbb7796b225f0eac74b08ac18938b07d93f1b80cf8ae2f9 [2023-11-29 00:12:52,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:12:52,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:12:52,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:12:52,260 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:12:52,260 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:12:52,261 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-34.i [2023-11-29 00:12:55,068 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:12:55,299 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:12:55,300 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-34.i [2023-11-29 00:12:55,310 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/data/5ebf21b8f/ebefa0eab46d43848e082bba1ca4cc75/FLAG018015547 [2023-11-29 00:12:55,324 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/data/5ebf21b8f/ebefa0eab46d43848e082bba1ca4cc75 [2023-11-29 00:12:55,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:12:55,327 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:12:55,329 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:12:55,329 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:12:55,333 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:12:55,334 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:12:55" (1/1) ... [2023-11-29 00:12:55,335 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5619a443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:12:55, skipping insertion in model container [2023-11-29 00:12:55,335 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:12:55" (1/1) ... [2023-11-29 00:12:55,372 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:12:55,501 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_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-34.i[916,929] [2023-11-29 00:12:55,597 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:12:55,610 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:12:55,620 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_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-34.i[916,929] [2023-11-29 00:12:55,664 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:12:55,684 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:12:55,684 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:12:55 WrapperNode [2023-11-29 00:12:55,684 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:12:55,686 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:12:55,686 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:12:55,686 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:12:55,693 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:12:55" (1/1) ... [2023-11-29 00:12:55,708 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:12:55" (1/1) ... [2023-11-29 00:12:55,759 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 314 [2023-11-29 00:12:55,759 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:12:55,760 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:12:55,760 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:12:55,760 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:12:55,772 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:12:55" (1/1) ... [2023-11-29 00:12:55,772 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:12:55" (1/1) ... [2023-11-29 00:12:55,777 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:12:55" (1/1) ... [2023-11-29 00:12:55,800 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 00:12:55,801 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:12:55" (1/1) ... [2023-11-29 00:12:55,801 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:12:55" (1/1) ... [2023-11-29 00:12:55,818 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:12:55" (1/1) ... [2023-11-29 00:12:55,823 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:12:55" (1/1) ... [2023-11-29 00:12:55,828 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:12:55" (1/1) ... [2023-11-29 00:12:55,832 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:12:55" (1/1) ... [2023-11-29 00:12:55,838 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:12:55,839 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:12:55,839 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:12:55,839 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:12:55,840 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:12:55" (1/1) ... [2023-11-29 00:12:55,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:12:55,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:12:55,871 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:12:55,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:12:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:12:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 00:12:55,908 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 00:12:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:12:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:12:55,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:12:56,010 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:12:56,013 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:12:56,562 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:12:56,598 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:12:56,598 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 00:12:56,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:12:56 BoogieIcfgContainer [2023-11-29 00:12:56,599 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:12:56,602 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:12:56,602 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:12:56,605 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:12:56,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:12:55" (1/3) ... [2023-11-29 00:12:56,606 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6572210 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:12:56, skipping insertion in model container [2023-11-29 00:12:56,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:12:55" (2/3) ... [2023-11-29 00:12:56,607 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6572210 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:12:56, skipping insertion in model container [2023-11-29 00:12:56,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:12:56" (3/3) ... [2023-11-29 00:12:56,608 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-34.i [2023-11-29 00:12:56,628 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:12:56,628 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 00:12:56,683 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:12:56,688 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;@57a8bf23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:12:56,689 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 00:12:56,693 INFO L276 IsEmpty]: Start isEmpty. Operand has 127 states, 80 states have (on average 1.5375) internal successors, (123), 81 states have internal predecessors, (123), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-29 00:12:56,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-11-29 00:12:56,712 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:12:56,713 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:12:56,713 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:12:56,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:12:56,717 INFO L85 PathProgramCache]: Analyzing trace with hash 231336762, now seen corresponding path program 1 times [2023-11-29 00:12:56,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:12:56,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696779758] [2023-11-29 00:12:56,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:56,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:12:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:56,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:12:56,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696779758] [2023-11-29 00:12:56,950 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 00:12:56,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528857241] [2023-11-29 00:12:56,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:56,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:12:56,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:12:56,956 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:12:56,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:12:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:57,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 00:12:57,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:12:57,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2023-11-29 00:12:57,303 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:12:57,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528857241] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:12:57,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:12:57,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:12:57,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642829119] [2023-11-29 00:12:57,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:12:57,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 00:12:57,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:12:57,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 00:12:57,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:12:57,348 INFO L87 Difference]: Start difference. First operand has 127 states, 80 states have (on average 1.5375) internal successors, (123), 81 states have internal predecessors, (123), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) [2023-11-29 00:12:57,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:12:57,402 INFO L93 Difference]: Finished difference Result 251 states and 464 transitions. [2023-11-29 00:12:57,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 00:12:57,405 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) Word has length 272 [2023-11-29 00:12:57,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:12:57,415 INFO L225 Difference]: With dead ends: 251 [2023-11-29 00:12:57,415 INFO L226 Difference]: Without dead ends: 125 [2023-11-29 00:12:57,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 271 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 00:12:57,424 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:12:57,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 203 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:12:57,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-11-29 00:12:57,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2023-11-29 00:12:57,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 79 states have (on average 1.4936708860759493) internal successors, (118), 79 states have internal predecessors, (118), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-29 00:12:57,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 206 transitions. [2023-11-29 00:12:57,491 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 206 transitions. Word has length 272 [2023-11-29 00:12:57,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:12:57,491 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 206 transitions. [2023-11-29 00:12:57,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) [2023-11-29 00:12:57,492 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 206 transitions. [2023-11-29 00:12:57,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-11-29 00:12:57,500 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:12:57,500 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:12:57,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:12:57,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 00:12:57,702 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:12:57,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:12:57,703 INFO L85 PathProgramCache]: Analyzing trace with hash -239992894, now seen corresponding path program 1 times [2023-11-29 00:12:57,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:12:57,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122202188] [2023-11-29 00:12:57,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:57,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:12:57,773 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:12:57,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1213088789] [2023-11-29 00:12:57,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:57,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:12:57,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:12:57,775 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:12:57,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:12:57,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:57,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:12:57,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:12:58,502 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2023-11-29 00:12:58,502 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:12:58,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:12:58,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122202188] [2023-11-29 00:12:58,502 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:12:58,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213088789] [2023-11-29 00:12:58,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213088789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:12:58,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:12:58,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:12:58,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408132062] [2023-11-29 00:12:58,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:12:58,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:12:58,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:12:58,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:12:58,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:12:58,507 INFO L87 Difference]: Start difference. First operand 125 states and 206 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-11-29 00:12:59,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:12:59,019 INFO L93 Difference]: Finished difference Result 374 states and 615 transitions. [2023-11-29 00:12:59,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:12:59,020 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 272 [2023-11-29 00:12:59,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:12:59,026 INFO L225 Difference]: With dead ends: 374 [2023-11-29 00:12:59,026 INFO L226 Difference]: Without dead ends: 250 [2023-11-29 00:12:59,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 268 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 00:12:59,029 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 192 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:12:59,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 766 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:12:59,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-11-29 00:12:59,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 127. [2023-11-29 00:12:59,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 81 states have (on average 1.4814814814814814) internal successors, (120), 81 states have internal predecessors, (120), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-29 00:12:59,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 208 transitions. [2023-11-29 00:12:59,062 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 208 transitions. Word has length 272 [2023-11-29 00:12:59,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:12:59,065 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 208 transitions. [2023-11-29 00:12:59,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-11-29 00:12:59,065 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 208 transitions. [2023-11-29 00:12:59,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-11-29 00:12:59,071 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:12:59,071 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:12:59,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 00:12:59,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-29 00:12:59,274 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:12:59,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:12:59,275 INFO L85 PathProgramCache]: Analyzing trace with hash 597301288, now seen corresponding path program 1 times [2023-11-29 00:12:59,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:12:59,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664307446] [2023-11-29 00:12:59,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:59,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:12:59,328 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:12:59,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1391235004] [2023-11-29 00:12:59,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:59,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:12:59,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:12:59,330 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:12:59,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:12:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:59,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:12:59,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:12:59,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2023-11-29 00:12:59,900 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:12:59,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:12:59,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664307446] [2023-11-29 00:12:59,901 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:12:59,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391235004] [2023-11-29 00:12:59,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391235004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:12:59,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:12:59,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:12:59,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041831997] [2023-11-29 00:12:59,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:12:59,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:12:59,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:12:59,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:12:59,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:12:59,904 INFO L87 Difference]: Start difference. First operand 127 states and 208 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-11-29 00:13:00,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:13:00,156 INFO L93 Difference]: Finished difference Result 408 states and 666 transitions. [2023-11-29 00:13:00,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:13:00,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 273 [2023-11-29 00:13:00,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:13:00,163 INFO L225 Difference]: With dead ends: 408 [2023-11-29 00:13:00,163 INFO L226 Difference]: Without dead ends: 282 [2023-11-29 00:13:00,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 270 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 00:13:00,165 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 188 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:13:00,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 634 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:13:00,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-11-29 00:13:00,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 253. [2023-11-29 00:13:00,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 162 states have (on average 1.4753086419753085) internal successors, (239), 162 states have internal predecessors, (239), 88 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2023-11-29 00:13:00,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 415 transitions. [2023-11-29 00:13:00,223 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 415 transitions. Word has length 273 [2023-11-29 00:13:00,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:13:00,224 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 415 transitions. [2023-11-29 00:13:00,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-11-29 00:13:00,225 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 415 transitions. [2023-11-29 00:13:00,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2023-11-29 00:13:00,230 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:13:00,230 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:13:00,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 00:13:00,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:13:00,431 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:13:00,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:00,431 INFO L85 PathProgramCache]: Analyzing trace with hash -166328102, now seen corresponding path program 1 times [2023-11-29 00:13:00,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:13:00,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442386972] [2023-11-29 00:13:00,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:00,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:13:00,481 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:13:00,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1340456229] [2023-11-29 00:13:00,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:00,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:13:00,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:13:00,484 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:13:00,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 00:13:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:00,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 00:13:00,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:13:01,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1933 proven. 66 refuted. 0 times theorem prover too weak. 1785 trivial. 0 not checked. [2023-11-29 00:13:01,334 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:13:01,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2023-11-29 00:13:01,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:13:01,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442386972] [2023-11-29 00:13:01,728 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:13:01,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340456229] [2023-11-29 00:13:01,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340456229] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:13:01,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:13:01,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-29 00:13:01,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022685101] [2023-11-29 00:13:01,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:13:01,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:13:01,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:13:01,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:13:01,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:13:01,732 INFO L87 Difference]: Start difference. First operand 253 states and 415 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-11-29 00:13:02,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:13:02,258 INFO L93 Difference]: Finished difference Result 999 states and 1629 transitions. [2023-11-29 00:13:02,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:13:02,259 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 274 [2023-11-29 00:13:02,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:13:02,267 INFO L225 Difference]: With dead ends: 999 [2023-11-29 00:13:02,267 INFO L226 Difference]: Without dead ends: 747 [2023-11-29 00:13:02,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 538 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:13:02,270 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 463 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:13:02,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 643 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:13:02,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2023-11-29 00:13:02,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 581. [2023-11-29 00:13:02,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 418 states have (on average 1.5239234449760766) internal successors, (637), 422 states have internal predecessors, (637), 156 states have call successors, (156), 6 states have call predecessors, (156), 6 states have return successors, (156), 152 states have call predecessors, (156), 156 states have call successors, (156) [2023-11-29 00:13:02,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 949 transitions. [2023-11-29 00:13:02,377 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 949 transitions. Word has length 274 [2023-11-29 00:13:02,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:13:02,378 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 949 transitions. [2023-11-29 00:13:02,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-11-29 00:13:02,378 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 949 transitions. [2023-11-29 00:13:02,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2023-11-29 00:13:02,383 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:13:02,383 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:13:02,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 00:13:02,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:13:02,584 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:13:02,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:02,585 INFO L85 PathProgramCache]: Analyzing trace with hash -25779492, now seen corresponding path program 1 times [2023-11-29 00:13:02,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:13:02,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602924324] [2023-11-29 00:13:02,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:02,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:13:02,622 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:13:02,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2091732924] [2023-11-29 00:13:02,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:02,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:13:02,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:13:02,625 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:13:02,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 00:13:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:03,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 00:13:03,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:13:03,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1933 proven. 66 refuted. 0 times theorem prover too weak. 1785 trivial. 0 not checked. [2023-11-29 00:13:03,726 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:13:03,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2023-11-29 00:13:03,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:13:03,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602924324] [2023-11-29 00:13:03,970 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:13:03,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091732924] [2023-11-29 00:13:03,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091732924] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:13:03,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:13:03,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-29 00:13:03,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954492479] [2023-11-29 00:13:03,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:13:03,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:13:03,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:13:03,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:13:03,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:13:03,974 INFO L87 Difference]: Start difference. First operand 581 states and 949 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-11-29 00:13:04,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:13:04,301 INFO L93 Difference]: Finished difference Result 1163 states and 1899 transitions. [2023-11-29 00:13:04,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:13:04,302 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 274 [2023-11-29 00:13:04,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:13:04,307 INFO L225 Difference]: With dead ends: 1163 [2023-11-29 00:13:04,308 INFO L226 Difference]: Without dead ends: 583 [2023-11-29 00:13:04,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:13:04,311 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 259 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:13:04,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 525 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:13:04,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2023-11-29 00:13:04,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 421. [2023-11-29 00:13:04,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 296 states have (on average 1.527027027027027) internal successors, (452), 298 states have internal predecessors, (452), 120 states have call successors, (120), 4 states have call predecessors, (120), 4 states have return successors, (120), 118 states have call predecessors, (120), 120 states have call successors, (120) [2023-11-29 00:13:04,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 692 transitions. [2023-11-29 00:13:04,379 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 692 transitions. Word has length 274 [2023-11-29 00:13:04,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:13:04,380 INFO L495 AbstractCegarLoop]: Abstraction has 421 states and 692 transitions. [2023-11-29 00:13:04,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-11-29 00:13:04,380 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 692 transitions. [2023-11-29 00:13:04,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2023-11-29 00:13:04,385 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:13:04,386 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:13:04,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 00:13:04,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:13:04,593 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:13:04,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:04,593 INFO L85 PathProgramCache]: Analyzing trace with hash -228367716, now seen corresponding path program 1 times [2023-11-29 00:13:04,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:13:04,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233160553] [2023-11-29 00:13:04,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:04,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:13:04,631 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:13:04,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [70557342] [2023-11-29 00:13:04,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:04,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:13:04,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:13:04,633 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:13:04,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 00:13:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:05,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-29 00:13:05,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:13:11,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1050 proven. 324 refuted. 0 times theorem prover too weak. 2410 trivial. 0 not checked. [2023-11-29 00:13:11,198 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:13:20,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2023-11-29 00:13:20,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:13:20,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233160553] [2023-11-29 00:13:20,586 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:13:20,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70557342] [2023-11-29 00:13:20,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70557342] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:13:20,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:13:20,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [21] total 28 [2023-11-29 00:13:20,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41941362] [2023-11-29 00:13:20,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:13:20,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:13:20,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:13:20,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:13:20,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2023-11-29 00:13:20,589 INFO L87 Difference]: Start difference. First operand 421 states and 692 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-11-29 00:13:34,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 00:13:47,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 00:13:51,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:13:51,842 INFO L93 Difference]: Finished difference Result 1079 states and 1731 transitions. [2023-11-29 00:13:51,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:13:51,843 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 274 [2023-11-29 00:13:51,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:13:51,849 INFO L225 Difference]: With dead ends: 1079 [2023-11-29 00:13:51,850 INFO L226 Difference]: Without dead ends: 659 [2023-11-29 00:13:51,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=222, Invalid=1038, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 00:13:51,853 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 295 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:13:51,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 1072 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 268 Invalid, 1 Unknown, 0 Unchecked, 20.2s Time] [2023-11-29 00:13:51,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2023-11-29 00:13:51,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 496. [2023-11-29 00:13:51,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 362 states have (on average 1.4972375690607735) internal successors, (542), 365 states have internal predecessors, (542), 125 states have call successors, (125), 8 states have call predecessors, (125), 8 states have return successors, (125), 122 states have call predecessors, (125), 125 states have call successors, (125) [2023-11-29 00:13:51,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 792 transitions. [2023-11-29 00:13:51,939 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 792 transitions. Word has length 274 [2023-11-29 00:13:51,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:13:51,940 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 792 transitions. [2023-11-29 00:13:51,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-11-29 00:13:51,940 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 792 transitions. [2023-11-29 00:13:51,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2023-11-29 00:13:51,944 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:13:51,944 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:13:51,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 00:13:52,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 00:13:52,145 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:13:52,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:52,146 INFO L85 PathProgramCache]: Analyzing trace with hash -171109414, now seen corresponding path program 1 times [2023-11-29 00:13:52,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:13:52,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774490465] [2023-11-29 00:13:52,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:52,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:13:52,173 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:13:52,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1973880992] [2023-11-29 00:13:52,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:52,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:13:52,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:13:52,175 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:13:52,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 00:13:52,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:52,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 00:13:52,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:13:58,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2023-11-29 00:13:58,634 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:13:58,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:13:58,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774490465] [2023-11-29 00:13:58,634 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:13:58,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973880992] [2023-11-29 00:13:58,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973880992] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:13:58,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:13:58,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:13:58,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072362736] [2023-11-29 00:13:58,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:13:58,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:13:58,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:13:58,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:13:58,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:13:58,637 INFO L87 Difference]: Start difference. First operand 496 states and 792 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-11-29 00:14:11,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:14:11,811 INFO L93 Difference]: Finished difference Result 1532 states and 2438 transitions. [2023-11-29 00:14:11,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 00:14:11,811 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 274 [2023-11-29 00:14:11,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:14:11,820 INFO L225 Difference]: With dead ends: 1532 [2023-11-29 00:14:11,820 INFO L226 Difference]: Without dead ends: 1289 [2023-11-29 00:14:11,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-11-29 00:14:11,823 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 510 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 1946 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:14:11,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 1946 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2023-11-29 00:14:11,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2023-11-29 00:14:12,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1191. [2023-11-29 00:14:12,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 865 states have (on average 1.484393063583815) internal successors, (1284), 871 states have internal predecessors, (1284), 305 states have call successors, (305), 20 states have call predecessors, (305), 20 states have return successors, (305), 299 states have call predecessors, (305), 305 states have call successors, (305) [2023-11-29 00:14:12,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1894 transitions. [2023-11-29 00:14:12,034 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1894 transitions. Word has length 274 [2023-11-29 00:14:12,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:14:12,034 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 1894 transitions. [2023-11-29 00:14:12,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-11-29 00:14:12,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1894 transitions. [2023-11-29 00:14:12,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2023-11-29 00:14:12,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:12,038 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:14:12,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 00:14:12,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:12,239 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:14:12,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:12,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1037714342, now seen corresponding path program 1 times [2023-11-29 00:14:12,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:12,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415486616] [2023-11-29 00:14:12,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:12,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:12,260 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:14:12,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2127690610] [2023-11-29 00:14:12,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:12,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:12,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:14:12,261 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:14:12,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 00:14:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:12,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-29 00:14:12,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:26,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 576 proven. 237 refuted. 0 times theorem prover too weak. 2971 trivial. 0 not checked. [2023-11-29 00:14:26,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:15:10,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 139 [2023-11-29 00:15:10,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:10,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415486616] [2023-11-29 00:15:10,448 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:15:10,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127690610] [2023-11-29 00:15:10,448 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-11-29 00:15:10,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 00:15:10,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 00:15:10,650 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_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:915) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:789) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:377) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:579) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) 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$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 45 more [2023-11-29 00:15:10,659 INFO L158 Benchmark]: Toolchain (without parser) took 135331.80ms. Allocated memory was 138.4MB in the beginning and 375.4MB in the end (delta: 237.0MB). Free memory was 108.8MB in the beginning and 186.7MB in the end (delta: -78.0MB). Peak memory consumption was 162.7MB. Max. memory is 16.1GB. [2023-11-29 00:15:10,660 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 111.1MB. Free memory is still 71.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:15:10,660 INFO L158 Benchmark]: CACSL2BoogieTranslator took 356.11ms. Allocated memory is still 138.4MB. Free memory was 108.4MB in the beginning and 90.3MB in the end (delta: 18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-29 00:15:10,660 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.02ms. Allocated memory is still 138.4MB. Free memory was 90.3MB in the beginning and 84.2MB in the end (delta: 6.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-29 00:15:10,660 INFO L158 Benchmark]: Boogie Preprocessor took 78.07ms. Allocated memory is still 138.4MB. Free memory was 84.2MB in the beginning and 76.9MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 00:15:10,661 INFO L158 Benchmark]: RCFGBuilder took 760.10ms. Allocated memory is still 138.4MB. Free memory was 76.9MB in the beginning and 80.0MB in the end (delta: -3.1MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. [2023-11-29 00:15:10,661 INFO L158 Benchmark]: TraceAbstraction took 134056.73ms. Allocated memory was 138.4MB in the beginning and 375.4MB in the end (delta: 237.0MB). Free memory was 79.4MB in the beginning and 186.7MB in the end (delta: -107.3MB). Peak memory consumption was 132.5MB. Max. memory is 16.1GB. [2023-11-29 00:15:10,663 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 111.1MB. Free memory is still 71.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 356.11ms. Allocated memory is still 138.4MB. Free memory was 108.4MB in the beginning and 90.3MB in the end (delta: 18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.02ms. Allocated memory is still 138.4MB. Free memory was 90.3MB in the beginning and 84.2MB in the end (delta: 6.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 78.07ms. Allocated memory is still 138.4MB. Free memory was 84.2MB in the beginning and 76.9MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 760.10ms. Allocated memory is still 138.4MB. Free memory was 76.9MB in the beginning and 80.0MB in the end (delta: -3.1MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. * TraceAbstraction took 134056.73ms. Allocated memory was 138.4MB in the beginning and 375.4MB in the end (delta: 237.0MB). Free memory was 79.4MB in the beginning and 186.7MB in the end (delta: -107.3MB). Peak memory consumption was 132.5MB. 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_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) 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_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/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_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-34.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/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_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/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 2b329d9832ec99d9ffbb7796b225f0eac74b08ac18938b07d93f1b80cf8ae2f9 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:15:12,429 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:15:12,510 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-29 00:15:12,515 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:15:12,516 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:15:12,543 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:15:12,543 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:15:12,544 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:15:12,544 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:15:12,545 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:15:12,546 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:15:12,546 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:15:12,547 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:15:12,547 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:15:12,548 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:15:12,549 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:15:12,549 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:15:12,550 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:15:12,550 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:15:12,551 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:15:12,551 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:15:12,552 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:15:12,552 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:15:12,553 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 00:15:12,553 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 00:15:12,554 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 00:15:12,554 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:15:12,554 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:15:12,555 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:15:12,555 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:15:12,555 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:15:12,556 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:15:12,556 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:15:12,557 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:15:12,557 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:15:12,557 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:15:12,557 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:15:12,558 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 00:15:12,558 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 00:15:12,558 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:15:12,558 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:15:12,558 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:15:12,559 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:15:12,559 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:15:12,559 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 00:15:12,559 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_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b329d9832ec99d9ffbb7796b225f0eac74b08ac18938b07d93f1b80cf8ae2f9 [2023-11-29 00:15:12,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:15:12,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:15:12,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:15:12,876 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:15:12,877 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:15:12,878 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-34.i [2023-11-29 00:15:15,693 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:15:15,900 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:15:15,901 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-34.i [2023-11-29 00:15:15,912 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/data/0fcdb23f0/cc28d268b21f435396c5a29727364e81/FLAGeb741e541 [2023-11-29 00:15:15,928 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/data/0fcdb23f0/cc28d268b21f435396c5a29727364e81 [2023-11-29 00:15:15,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:15:15,933 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:15:15,935 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:15:15,935 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:15:15,940 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:15:15,941 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:15:15" (1/1) ... [2023-11-29 00:15:15,942 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1809309c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:15, skipping insertion in model container [2023-11-29 00:15:15,943 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:15:15" (1/1) ... [2023-11-29 00:15:15,983 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:15:16,148 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_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-34.i[916,929] [2023-11-29 00:15:16,231 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:15:16,248 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:15:16,261 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_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-34.i[916,929] [2023-11-29 00:15:16,303 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:15:16,323 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:15:16,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:16 WrapperNode [2023-11-29 00:15:16,324 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:15:16,325 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:15:16,325 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:15:16,325 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:15:16,333 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:16" (1/1) ... [2023-11-29 00:15:16,348 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:16" (1/1) ... [2023-11-29 00:15:16,383 INFO L138 Inliner]: procedures = 27, calls = 57, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 266 [2023-11-29 00:15:16,384 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:15:16,384 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:15:16,385 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:15:16,385 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:15:16,397 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:16" (1/1) ... [2023-11-29 00:15:16,397 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:16" (1/1) ... [2023-11-29 00:15:16,403 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:16" (1/1) ... [2023-11-29 00:15:16,417 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 00:15:16,418 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:16" (1/1) ... [2023-11-29 00:15:16,418 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:16" (1/1) ... [2023-11-29 00:15:16,442 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:16" (1/1) ... [2023-11-29 00:15:16,447 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:16" (1/1) ... [2023-11-29 00:15:16,451 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:16" (1/1) ... [2023-11-29 00:15:16,454 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:16" (1/1) ... [2023-11-29 00:15:16,461 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:15:16,462 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:15:16,462 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:15:16,462 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:15:16,463 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:16" (1/1) ... [2023-11-29 00:15:16,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:15:16,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:16,493 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:15:16,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:15:16,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:15:16,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 00:15:16,529 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 00:15:16,529 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 00:15:16,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:15:16,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:15:16,640 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:15:16,642 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:15:20,362 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:15:20,425 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:15:20,426 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 00:15:20,426 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:15:20 BoogieIcfgContainer [2023-11-29 00:15:20,426 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:15:20,428 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:15:20,428 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:15:20,431 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:15:20,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:15:15" (1/3) ... [2023-11-29 00:15:20,432 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1344ec69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:15:20, skipping insertion in model container [2023-11-29 00:15:20,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:16" (2/3) ... [2023-11-29 00:15:20,433 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1344ec69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:15:20, skipping insertion in model container [2023-11-29 00:15:20,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:15:20" (3/3) ... [2023-11-29 00:15:20,434 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-34.i [2023-11-29 00:15:20,450 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:15:20,450 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 00:15:20,494 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:15:20,499 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;@e0e5a33, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:15:20,499 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 00:15:20,504 INFO L276 IsEmpty]: Start isEmpty. Operand has 112 states, 65 states have (on average 1.4923076923076923) internal successors, (97), 66 states have internal predecessors, (97), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-29 00:15:20,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2023-11-29 00:15:20,524 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:20,525 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:15:20,525 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:15:20,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:20,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1319175356, now seen corresponding path program 1 times [2023-11-29 00:15:20,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:15:20,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459579470] [2023-11-29 00:15:20,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:20,544 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 00:15:20,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:15:20,545 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/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 00:15:20,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/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 00:15:21,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:21,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 00:15:21,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:21,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 710 proven. 0 refuted. 0 times theorem prover too weak. 3074 trivial. 0 not checked. [2023-11-29 00:15:21,138 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:15:21,139 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:15:21,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459579470] [2023-11-29 00:15:21,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [459579470] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:15:21,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:15:21,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:15:21,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561904069] [2023-11-29 00:15:21,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:15:21,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 00:15:21,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:15:21,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 00:15:21,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:15:21,179 INFO L87 Difference]: Start difference. First operand has 112 states, 65 states have (on average 1.4923076923076923) internal successors, (97), 66 states have internal predecessors, (97), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2023-11-29 00:15:21,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:21,268 INFO L93 Difference]: Finished difference Result 221 states and 412 transitions. [2023-11-29 00:15:21,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 00:15:21,275 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 268 [2023-11-29 00:15:21,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:21,284 INFO L225 Difference]: With dead ends: 221 [2023-11-29 00:15:21,284 INFO L226 Difference]: Without dead ends: 110 [2023-11-29 00:15:21,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 267 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 00:15:21,292 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:21,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 177 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:15:21,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-11-29 00:15:21,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2023-11-29 00:15:21,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 64 states have (on average 1.4375) internal successors, (92), 64 states have internal predecessors, (92), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-29 00:15:21,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 180 transitions. [2023-11-29 00:15:21,401 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 180 transitions. Word has length 268 [2023-11-29 00:15:21,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:21,402 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 180 transitions. [2023-11-29 00:15:21,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2023-11-29 00:15:21,402 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 180 transitions. [2023-11-29 00:15:21,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2023-11-29 00:15:21,412 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:21,412 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:15:21,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/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 00:15:21,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/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 00:15:21,616 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:15:21,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:21,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1600611004, now seen corresponding path program 1 times [2023-11-29 00:15:21,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:15:21,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [125455096] [2023-11-29 00:15:21,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:21,618 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 00:15:21,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:15:21,619 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/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 00:15:21,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/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 00:15:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:22,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:15:22,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:22,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1473 proven. 96 refuted. 0 times theorem prover too weak. 2215 trivial. 0 not checked. [2023-11-29 00:15:22,870 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:15:23,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 33 proven. 96 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2023-11-29 00:15:23,312 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:15:23,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [125455096] [2023-11-29 00:15:23,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [125455096] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:15:23,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:15:23,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-11-29 00:15:23,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145825000] [2023-11-29 00:15:23,314 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:15:23,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:15:23,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:15:23,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:15:23,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:15:23,319 INFO L87 Difference]: Start difference. First operand 110 states and 180 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 2 states have call successors, (76), 2 states have call predecessors, (76), 4 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) [2023-11-29 00:15:24,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:24,772 INFO L93 Difference]: Finished difference Result 340 states and 548 transitions. [2023-11-29 00:15:24,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 00:15:24,773 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 2 states have call successors, (76), 2 states have call predecessors, (76), 4 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) Word has length 268 [2023-11-29 00:15:24,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:24,777 INFO L225 Difference]: With dead ends: 340 [2023-11-29 00:15:24,778 INFO L226 Difference]: Without dead ends: 231 [2023-11-29 00:15:24,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 528 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2023-11-29 00:15:24,780 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 195 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:24,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 651 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 00:15:24,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-11-29 00:15:24,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 225. [2023-11-29 00:15:24,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 132 states have (on average 1.4166666666666667) internal successors, (187), 132 states have internal predecessors, (187), 88 states have call successors, (88), 4 states have call predecessors, (88), 4 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2023-11-29 00:15:24,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 363 transitions. [2023-11-29 00:15:24,844 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 363 transitions. Word has length 268 [2023-11-29 00:15:24,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:24,846 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 363 transitions. [2023-11-29 00:15:24,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 2 states have call successors, (76), 2 states have call predecessors, (76), 4 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) [2023-11-29 00:15:24,847 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 363 transitions. [2023-11-29 00:15:24,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2023-11-29 00:15:24,852 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:24,852 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:15:24,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/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 00:15:25,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/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 00:15:25,066 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:15:25,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:25,067 INFO L85 PathProgramCache]: Analyzing trace with hash -899546426, now seen corresponding path program 1 times [2023-11-29 00:15:25,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:15:25,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1193910513] [2023-11-29 00:15:25,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:25,068 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 00:15:25,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:15:25,069 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/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 00:15:25,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/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 00:15:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:25,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:15:25,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:26,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2023-11-29 00:15:26,246 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:15:26,246 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:15:26,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1193910513] [2023-11-29 00:15:26,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1193910513] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:15:26,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:15:26,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:15:26,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188147930] [2023-11-29 00:15:26,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:15:26,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:15:26,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:15:26,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:15:26,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:15:26,250 INFO L87 Difference]: Start difference. First operand 225 states and 363 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-11-29 00:15:26,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:26,648 INFO L93 Difference]: Finished difference Result 469 states and 752 transitions. [2023-11-29 00:15:26,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:15:26,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 268 [2023-11-29 00:15:26,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:26,658 INFO L225 Difference]: With dead ends: 469 [2023-11-29 00:15:26,658 INFO L226 Difference]: Without dead ends: 245 [2023-11-29 00:15:26,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 265 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 00:15:26,662 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 138 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:26,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 543 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:15:26,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-11-29 00:15:26,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 227. [2023-11-29 00:15:26,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 134 states have (on average 1.3955223880597014) internal successors, (187), 134 states have internal predecessors, (187), 88 states have call successors, (88), 4 states have call predecessors, (88), 4 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2023-11-29 00:15:26,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 363 transitions. [2023-11-29 00:15:26,709 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 363 transitions. Word has length 268 [2023-11-29 00:15:26,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:26,710 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 363 transitions. [2023-11-29 00:15:26,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-11-29 00:15:26,711 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 363 transitions. [2023-11-29 00:15:26,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2023-11-29 00:15:26,714 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:26,714 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:15:26,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/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 00:15:26,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/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 00:15:26,915 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:15:26,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:26,916 INFO L85 PathProgramCache]: Analyzing trace with hash 985309035, now seen corresponding path program 1 times [2023-11-29 00:15:26,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:15:26,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [346566722] [2023-11-29 00:15:26,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:26,917 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 00:15:26,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:15:26,918 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/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 00:15:26,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/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 00:15:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:27,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:15:27,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:29,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2023-11-29 00:15:29,108 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:15:29,108 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:15:29,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [346566722] [2023-11-29 00:15:29,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [346566722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:15:29,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:15:29,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:15:29,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036723741] [2023-11-29 00:15:29,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:15:29,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:15:29,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:15:29,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:15:29,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:15:29,112 INFO L87 Difference]: Start difference. First operand 227 states and 363 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-11-29 00:15:30,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:30,340 INFO L93 Difference]: Finished difference Result 783 states and 1253 transitions. [2023-11-29 00:15:30,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:15:30,341 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 269 [2023-11-29 00:15:30,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:30,347 INFO L225 Difference]: With dead ends: 783 [2023-11-29 00:15:30,347 INFO L226 Difference]: Without dead ends: 557 [2023-11-29 00:15:30,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:15:30,350 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 179 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:30,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 805 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 00:15:30,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2023-11-29 00:15:30,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 447. [2023-11-29 00:15:30,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 262 states have (on average 1.381679389312977) internal successors, (362), 262 states have internal predecessors, (362), 176 states have call successors, (176), 8 states have call predecessors, (176), 8 states have return successors, (176), 176 states have call predecessors, (176), 176 states have call successors, (176) [2023-11-29 00:15:30,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 714 transitions. [2023-11-29 00:15:30,432 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 714 transitions. Word has length 269 [2023-11-29 00:15:30,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:30,433 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 714 transitions. [2023-11-29 00:15:30,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-11-29 00:15:30,433 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 714 transitions. [2023-11-29 00:15:30,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-11-29 00:15:30,437 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:30,438 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:15:30,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/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)] Ended with exit code 0 [2023-11-29 00:15:30,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/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 00:15:30,639 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:15:30,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:30,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1763013822, now seen corresponding path program 1 times [2023-11-29 00:15:30,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:15:30,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [378996538] [2023-11-29 00:15:30,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:30,645 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 00:15:30,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:15:30,649 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/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 00:15:30,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/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 00:15:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:31,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:15:31,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:31,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2023-11-29 00:15:31,322 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:15:31,322 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:15:31,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [378996538] [2023-11-29 00:15:31,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [378996538] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:15:31,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:15:31,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:15:31,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059180837] [2023-11-29 00:15:31,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:15:31,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:15:31,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:15:31,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:15:31,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:15:31,325 INFO L87 Difference]: Start difference. First operand 447 states and 714 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-11-29 00:15:37,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:15:39,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:15:40,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:40,886 INFO L93 Difference]: Finished difference Result 1471 states and 2317 transitions. [2023-11-29 00:15:40,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:15:40,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 270 [2023-11-29 00:15:40,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:40,897 INFO L225 Difference]: With dead ends: 1471 [2023-11-29 00:15:40,897 INFO L226 Difference]: Without dead ends: 1025 [2023-11-29 00:15:40,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:15:40,899 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 279 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:40,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 440 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2023-11-29 00:15:40,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2023-11-29 00:15:41,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 727. [2023-11-29 00:15:41,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 470 states have (on average 1.4340425531914893) internal successors, (674), 474 states have internal predecessors, (674), 240 states have call successors, (240), 16 states have call predecessors, (240), 16 states have return successors, (240), 236 states have call predecessors, (240), 240 states have call successors, (240) [2023-11-29 00:15:41,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1154 transitions. [2023-11-29 00:15:41,029 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1154 transitions. Word has length 270 [2023-11-29 00:15:41,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:41,030 INFO L495 AbstractCegarLoop]: Abstraction has 727 states and 1154 transitions. [2023-11-29 00:15:41,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-11-29 00:15:41,031 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1154 transitions. [2023-11-29 00:15:41,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-11-29 00:15:41,033 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:41,034 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:15:41,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/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)] Forceful destruction successful, exit code 0 [2023-11-29 00:15:41,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/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 00:15:41,243 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:15:41,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:41,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1544159104, now seen corresponding path program 1 times [2023-11-29 00:15:41,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:15:41,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764873780] [2023-11-29 00:15:41,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:41,244 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 00:15:41,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:15:41,245 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/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 00:15:41,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c78ac95-ee95-4b12-852a-0bf3f4c0d9f6/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 00:15:41,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:41,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-29 00:15:41,778 INFO L285 TraceCheckSpWp]: Computing forward predicates...