./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-31.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/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_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-31.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/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_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/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 b0ba689c7bb19f024edc91f3d1d4af93d56766db0d003f79ab819b08f0092357 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:21:35,381 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:21:35,442 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:21:35,446 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:21:35,447 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:21:35,467 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:21:35,468 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:21:35,468 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:21:35,469 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:21:35,469 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:21:35,470 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:21:35,470 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:21:35,471 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:21:35,471 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:21:35,472 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:21:35,472 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:21:35,473 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:21:35,473 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:21:35,474 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:21:35,474 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:21:35,475 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:21:35,475 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:21:35,476 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:21:35,476 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:21:35,476 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:21:35,477 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:21:35,477 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:21:35,478 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:21:35,478 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:21:35,479 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:21:35,479 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:21:35,479 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:21:35,480 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:21:35,480 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:21:35,480 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:21:35,480 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:21:35,480 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:21:35,480 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:21:35,481 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:21:35,481 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:21:35,481 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:21:35,481 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:21:35,481 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_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b0ba689c7bb19f024edc91f3d1d4af93d56766db0d003f79ab819b08f0092357 [2023-11-29 01:21:35,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:21:35,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:21:35,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:21:35,712 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:21:35,713 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:21:35,714 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-31.i [2023-11-29 01:21:38,443 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:21:38,647 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:21:38,647 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-31.i [2023-11-29 01:21:38,657 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/data/3d23df61b/c1876c522db04c8fb21c4d0d81cd2a78/FLAGdf29226bb [2023-11-29 01:21:38,671 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/data/3d23df61b/c1876c522db04c8fb21c4d0d81cd2a78 [2023-11-29 01:21:38,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:21:38,675 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:21:38,677 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:21:38,677 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:21:38,682 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:21:38,683 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:21:38" (1/1) ... [2023-11-29 01:21:38,684 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79bfc122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:21:38, skipping insertion in model container [2023-11-29 01:21:38,684 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:21:38" (1/1) ... [2023-11-29 01:21:38,717 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:21:38,858 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_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-31.i[919,932] [2023-11-29 01:21:38,930 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:21:38,943 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:21:38,953 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_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-31.i[919,932] [2023-11-29 01:21:38,989 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:21:39,007 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:21:39,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:21:39 WrapperNode [2023-11-29 01:21:39,007 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:21:39,008 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:21:39,009 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:21:39,009 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:21:39,016 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:21:39" (1/1) ... [2023-11-29 01:21:39,029 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:21:39" (1/1) ... [2023-11-29 01:21:39,069 INFO L138 Inliner]: procedures = 26, calls = 42, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 212 [2023-11-29 01:21:39,070 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:21:39,070 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:21:39,070 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:21:39,071 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:21:39,081 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:21:39" (1/1) ... [2023-11-29 01:21:39,081 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:21:39" (1/1) ... [2023-11-29 01:21:39,086 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:21:39" (1/1) ... [2023-11-29 01:21:39,109 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 01:21:39,110 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:21:39" (1/1) ... [2023-11-29 01:21:39,110 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:21:39" (1/1) ... [2023-11-29 01:21:39,125 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:21:39" (1/1) ... [2023-11-29 01:21:39,130 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:21:39" (1/1) ... [2023-11-29 01:21:39,135 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:21:39" (1/1) ... [2023-11-29 01:21:39,139 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:21:39" (1/1) ... [2023-11-29 01:21:39,146 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:21:39,147 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:21:39,147 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:21:39,147 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:21:39,148 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:21:39" (1/1) ... [2023-11-29 01:21:39,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:21:39,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:21:39,172 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:21:39,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:21:39,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:21:39,215 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 01:21:39,215 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 01:21:39,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:21:39,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:21:39,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:21:39,295 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:21:39,297 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:21:39,705 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:21:39,738 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:21:39,738 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 01:21:39,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:21:39 BoogieIcfgContainer [2023-11-29 01:21:39,739 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:21:39,741 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:21:39,741 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:21:39,744 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:21:39,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:21:38" (1/3) ... [2023-11-29 01:21:39,745 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc66688 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:21:39, skipping insertion in model container [2023-11-29 01:21:39,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:21:39" (2/3) ... [2023-11-29 01:21:39,745 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc66688 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:21:39, skipping insertion in model container [2023-11-29 01:21:39,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:21:39" (3/3) ... [2023-11-29 01:21:39,747 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-31.i [2023-11-29 01:21:39,762 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:21:39,762 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:21:39,806 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:21:39,812 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;@2106cc98, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:21:39,812 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 01:21:39,816 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 54 states have (on average 1.5) internal successors, (81), 55 states have internal predecessors, (81), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-29 01:21:39,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-11-29 01:21:39,832 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:21:39,833 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:21:39,833 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:21:39,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:21:39,839 INFO L85 PathProgramCache]: Analyzing trace with hash -172415261, now seen corresponding path program 1 times [2023-11-29 01:21:39,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:21:39,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596669153] [2023-11-29 01:21:39,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:39,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:21:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:21:40,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:21:40,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596669153] [2023-11-29 01:21:40,045 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 01:21:40,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059260584] [2023-11-29 01:21:40,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:40,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:21:40,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:21:40,048 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:21:40,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:21:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:21:40,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 01:21:40,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:21:40,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2023-11-29 01:21:40,300 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:21:40,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059260584] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:21:40,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:21:40,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:21:40,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095525161] [2023-11-29 01:21:40,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:21:40,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:21:40,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:21:40,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:21:40,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:21:40,334 INFO L87 Difference]: Start difference. First operand has 86 states, 54 states have (on average 1.5) internal successors, (81), 55 states have internal predecessors, (81), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 2 states have call successors, (29) [2023-11-29 01:21:40,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:21:40,376 INFO L93 Difference]: Finished difference Result 169 states and 305 transitions. [2023-11-29 01:21:40,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:21:40,378 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 2 states have call successors, (29) Word has length 183 [2023-11-29 01:21:40,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:21:40,385 INFO L225 Difference]: With dead ends: 169 [2023-11-29 01:21:40,386 INFO L226 Difference]: Without dead ends: 84 [2023-11-29 01:21:40,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 182 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 01:21:40,392 INFO L413 NwaCegarLoop]: 131 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, 131 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 01:21:40,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 131 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:21:40,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-11-29 01:21:40,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2023-11-29 01:21:40,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 53 states have (on average 1.4339622641509433) internal successors, (76), 53 states have internal predecessors, (76), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-29 01:21:40,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 134 transitions. [2023-11-29 01:21:40,437 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 134 transitions. Word has length 183 [2023-11-29 01:21:40,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:21:40,438 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 134 transitions. [2023-11-29 01:21:40,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 2 states have call successors, (29) [2023-11-29 01:21:40,438 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 134 transitions. [2023-11-29 01:21:40,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-11-29 01:21:40,443 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:21:40,443 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:21:40,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:21:40,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 01:21:40,644 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:21:40,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:21:40,645 INFO L85 PathProgramCache]: Analyzing trace with hash 102274157, now seen corresponding path program 1 times [2023-11-29 01:21:40,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:21:40,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058105266] [2023-11-29 01:21:40,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:40,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:21:40,706 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:21:40,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2026788874] [2023-11-29 01:21:40,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:40,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:21:40,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:21:40,708 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:21:40,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:21:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:21:40,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:21:40,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:21:40,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-11-29 01:21:40,940 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:21:40,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:21:40,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058105266] [2023-11-29 01:21:40,941 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:21:40,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026788874] [2023-11-29 01:21:40,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026788874] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:21:40,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:21:40,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:21:40,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470029071] [2023-11-29 01:21:40,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:21:40,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:21:40,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:21:40,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:21:40,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:21:40,945 INFO L87 Difference]: Start difference. First operand 84 states and 134 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-29 01:21:41,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:21:41,009 INFO L93 Difference]: Finished difference Result 249 states and 398 transitions. [2023-11-29 01:21:41,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:21:41,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 183 [2023-11-29 01:21:41,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:21:41,013 INFO L225 Difference]: With dead ends: 249 [2023-11-29 01:21:41,014 INFO L226 Difference]: Without dead ends: 166 [2023-11-29 01:21:41,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:21:41,016 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 124 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:21:41,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 371 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:21:41,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-29 01:21:41,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 88. [2023-11-29 01:21:41,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 57 states have internal predecessors, (81), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-29 01:21:41,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 139 transitions. [2023-11-29 01:21:41,035 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 139 transitions. Word has length 183 [2023-11-29 01:21:41,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:21:41,037 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 139 transitions. [2023-11-29 01:21:41,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-29 01:21:41,038 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 139 transitions. [2023-11-29 01:21:41,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-11-29 01:21:41,041 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:21:41,042 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:21:41,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:21:41,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:21:41,242 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:21:41,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:21:41,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1877281519, now seen corresponding path program 1 times [2023-11-29 01:21:41,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:21:41,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397725521] [2023-11-29 01:21:41,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:41,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:21:41,291 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:21:41,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [735005796] [2023-11-29 01:21:41,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:41,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:21:41,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:21:41,293 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:21:41,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:21:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:21:41,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 01:21:41,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:21:42,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 964 proven. 108 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2023-11-29 01:21:42,086 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:21:42,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 54 proven. 111 refuted. 0 times theorem prover too weak. 1459 trivial. 0 not checked. [2023-11-29 01:21:42,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:21:42,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397725521] [2023-11-29 01:21:42,663 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:21:42,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735005796] [2023-11-29 01:21:42,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735005796] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:21:42,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:21:42,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-11-29 01:21:42,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629456601] [2023-11-29 01:21:42,665 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:21:42,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 01:21:42,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:21:42,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 01:21:42,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:21:42,668 INFO L87 Difference]: Start difference. First operand 88 states and 139 transitions. Second operand has 18 states, 18 states have (on average 4.611111111111111) internal successors, (83), 18 states have internal predecessors, (83), 5 states have call successors, (51), 3 states have call predecessors, (51), 7 states have return successors, (52), 5 states have call predecessors, (52), 5 states have call successors, (52) [2023-11-29 01:21:43,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:21:43,535 INFO L93 Difference]: Finished difference Result 241 states and 361 transitions. [2023-11-29 01:21:43,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 01:21:43,537 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.611111111111111) internal successors, (83), 18 states have internal predecessors, (83), 5 states have call successors, (51), 3 states have call predecessors, (51), 7 states have return successors, (52), 5 states have call predecessors, (52), 5 states have call successors, (52) Word has length 183 [2023-11-29 01:21:43,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:21:43,540 INFO L225 Difference]: With dead ends: 241 [2023-11-29 01:21:43,540 INFO L226 Difference]: Without dead ends: 154 [2023-11-29 01:21:43,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=354, Invalid=768, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 01:21:43,543 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 377 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:21:43,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 447 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 01:21:43,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-11-29 01:21:43,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 130. [2023-11-29 01:21:43,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 92 states have (on average 1.4130434782608696) internal successors, (130), 93 states have internal predecessors, (130), 33 states have call successors, (33), 4 states have call predecessors, (33), 4 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-29 01:21:43,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 196 transitions. [2023-11-29 01:21:43,565 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 196 transitions. Word has length 183 [2023-11-29 01:21:43,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:21:43,566 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 196 transitions. [2023-11-29 01:21:43,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.611111111111111) internal successors, (83), 18 states have internal predecessors, (83), 5 states have call successors, (51), 3 states have call predecessors, (51), 7 states have return successors, (52), 5 states have call predecessors, (52), 5 states have call successors, (52) [2023-11-29 01:21:43,567 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 196 transitions. [2023-11-29 01:21:43,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-11-29 01:21:43,570 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:21:43,570 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:21:43,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 01:21:43,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:21:43,776 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:21:43,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:21:43,777 INFO L85 PathProgramCache]: Analyzing trace with hash 866164269, now seen corresponding path program 1 times [2023-11-29 01:21:43,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:21:43,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677528898] [2023-11-29 01:21:43,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:43,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:21:43,812 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:21:43,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1349437492] [2023-11-29 01:21:43,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:43,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:21:43,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:21:43,814 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:21:43,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:21:43,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:21:43,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 01:21:43,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:21:44,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 523 proven. 132 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2023-11-29 01:21:44,938 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:21:45,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 30 proven. 135 refuted. 0 times theorem prover too weak. 1459 trivial. 0 not checked. [2023-11-29 01:21:45,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:21:45,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677528898] [2023-11-29 01:21:45,825 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:21:45,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349437492] [2023-11-29 01:21:45,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349437492] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:21:45,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:21:45,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-11-29 01:21:45,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079540651] [2023-11-29 01:21:45,826 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:21:45,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 01:21:45,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:21:45,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 01:21:45,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:21:45,829 INFO L87 Difference]: Start difference. First operand 130 states and 196 transitions. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 6 states have call successors, (58), 4 states have call predecessors, (58), 7 states have return successors, (58), 6 states have call predecessors, (58), 6 states have call successors, (58) [2023-11-29 01:21:47,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:21:47,373 INFO L93 Difference]: Finished difference Result 571 states and 840 transitions. [2023-11-29 01:21:47,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 01:21:47,374 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 6 states have call successors, (58), 4 states have call predecessors, (58), 7 states have return successors, (58), 6 states have call predecessors, (58), 6 states have call successors, (58) Word has length 183 [2023-11-29 01:21:47,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:21:47,380 INFO L225 Difference]: With dead ends: 571 [2023-11-29 01:21:47,380 INFO L226 Difference]: Without dead ends: 442 [2023-11-29 01:21:47,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=599, Invalid=1123, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 01:21:47,383 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 904 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:21:47,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 572 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [458 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 01:21:47,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2023-11-29 01:21:47,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 219. [2023-11-29 01:21:47,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 146 states have (on average 1.3630136986301369) internal successors, (199), 147 states have internal predecessors, (199), 62 states have call successors, (62), 10 states have call predecessors, (62), 10 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2023-11-29 01:21:47,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 323 transitions. [2023-11-29 01:21:47,430 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 323 transitions. Word has length 183 [2023-11-29 01:21:47,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:21:47,431 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 323 transitions. [2023-11-29 01:21:47,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 6 states have call successors, (58), 4 states have call predecessors, (58), 7 states have return successors, (58), 6 states have call predecessors, (58), 6 states have call successors, (58) [2023-11-29 01:21:47,432 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 323 transitions. [2023-11-29 01:21:47,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-11-29 01:21:47,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:21:47,435 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:21:47,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 01:21:47,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:21:47,640 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:21:47,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:21:47,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1352630387, now seen corresponding path program 1 times [2023-11-29 01:21:47,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:21:47,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095595128] [2023-11-29 01:21:47,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:47,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:21:47,675 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:21:47,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1297460098] [2023-11-29 01:21:47,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:47,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:21:47,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:21:47,677 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:21:47,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:21:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:21:47,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 01:21:47,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:21:48,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 942 proven. 114 refuted. 0 times theorem prover too weak. 568 trivial. 0 not checked. [2023-11-29 01:21:48,172 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:21:48,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 48 proven. 117 refuted. 0 times theorem prover too weak. 1459 trivial. 0 not checked. [2023-11-29 01:21:48,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:21:48,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095595128] [2023-11-29 01:21:48,467 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:21:48,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297460098] [2023-11-29 01:21:48,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297460098] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:21:48,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:21:48,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-29 01:21:48,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91556682] [2023-11-29 01:21:48,468 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:21:48,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 01:21:48,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:21:48,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 01:21:48,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:21:48,470 INFO L87 Difference]: Start difference. First operand 219 states and 323 transitions. Second operand has 16 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 5 states have call successors, (53), 3 states have call predecessors, (53), 7 states have return successors, (54), 5 states have call predecessors, (54), 5 states have call successors, (54) [2023-11-29 01:21:48,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:21:48,847 INFO L93 Difference]: Finished difference Result 376 states and 543 transitions. [2023-11-29 01:21:48,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 01:21:48,848 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 5 states have call successors, (53), 3 states have call predecessors, (53), 7 states have return successors, (54), 5 states have call predecessors, (54), 5 states have call successors, (54) Word has length 184 [2023-11-29 01:21:48,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:21:48,851 INFO L225 Difference]: With dead ends: 376 [2023-11-29 01:21:48,851 INFO L226 Difference]: Without dead ends: 243 [2023-11-29 01:21:48,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-11-29 01:21:48,853 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 271 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:21:48,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 358 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:21:48,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-11-29 01:21:48,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 227. [2023-11-29 01:21:48,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 152 states have (on average 1.3157894736842106) internal successors, (200), 153 states have internal predecessors, (200), 62 states have call successors, (62), 12 states have call predecessors, (62), 12 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2023-11-29 01:21:48,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 324 transitions. [2023-11-29 01:21:48,893 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 324 transitions. Word has length 184 [2023-11-29 01:21:48,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:21:48,894 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 324 transitions. [2023-11-29 01:21:48,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 5 states have call successors, (53), 3 states have call predecessors, (53), 7 states have return successors, (54), 5 states have call predecessors, (54), 5 states have call successors, (54) [2023-11-29 01:21:48,894 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 324 transitions. [2023-11-29 01:21:48,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-11-29 01:21:48,897 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:21:48,897 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:21:48,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:21:49,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:21:49,098 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:21:49,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:21:49,098 INFO L85 PathProgramCache]: Analyzing trace with hash 72766709, now seen corresponding path program 1 times [2023-11-29 01:21:49,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:21:49,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989046096] [2023-11-29 01:21:49,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:49,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:21:49,119 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:21:49,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [161132222] [2023-11-29 01:21:49,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:49,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:21:49,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:21:49,121 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:21:49,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:21:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:21:49,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 01:21:49,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:21:49,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 345 proven. 153 refuted. 0 times theorem prover too weak. 1126 trivial. 0 not checked. [2023-11-29 01:21:49,735 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:21:50,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 12 proven. 72 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2023-11-29 01:21:50,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:21:50,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989046096] [2023-11-29 01:21:50,101 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:21:50,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161132222] [2023-11-29 01:21:50,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161132222] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:21:50,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:21:50,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-11-29 01:21:50,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792357096] [2023-11-29 01:21:50,101 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:21:50,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:21:50,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:21:50,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:21:50,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:21:50,103 INFO L87 Difference]: Start difference. First operand 227 states and 324 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 4 states have call successors, (58), 3 states have call predecessors, (58), 5 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) [2023-11-29 01:21:50,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:21:50,526 INFO L93 Difference]: Finished difference Result 376 states and 534 transitions. [2023-11-29 01:21:50,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:21:50,526 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 4 states have call successors, (58), 3 states have call predecessors, (58), 5 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) Word has length 184 [2023-11-29 01:21:50,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:21:50,529 INFO L225 Difference]: With dead ends: 376 [2023-11-29 01:21:50,529 INFO L226 Difference]: Without dead ends: 239 [2023-11-29 01:21:50,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:21:50,531 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 111 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:21:50,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 379 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:21:50,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-11-29 01:21:50,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 227. [2023-11-29 01:21:50,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 152 states have (on average 1.3092105263157894) internal successors, (199), 153 states have internal predecessors, (199), 62 states have call successors, (62), 12 states have call predecessors, (62), 12 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2023-11-29 01:21:50,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 323 transitions. [2023-11-29 01:21:50,561 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 323 transitions. Word has length 184 [2023-11-29 01:21:50,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:21:50,561 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 323 transitions. [2023-11-29 01:21:50,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 4 states have call successors, (58), 3 states have call predecessors, (58), 5 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) [2023-11-29 01:21:50,562 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 323 transitions. [2023-11-29 01:21:50,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-11-29 01:21:50,564 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:21:50,564 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:21:50,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:21:50,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:21:50,766 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:21:50,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:21:50,766 INFO L85 PathProgramCache]: Analyzing trace with hash -137926023, now seen corresponding path program 1 times [2023-11-29 01:21:50,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:21:50,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784379023] [2023-11-29 01:21:50,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:50,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:21:50,788 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:21:50,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [302231922] [2023-11-29 01:21:50,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:50,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:21:50,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:21:50,789 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:21:50,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd5d040-6c6b-4f8c-a8db-0e5104b0960e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:21:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:21:50,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-29 01:21:50,949 INFO L285 TraceCheckSpWp]: Computing forward predicates...